Answers
2 = J
3 = B
Hope This Helps :)
Related Questions
Carly works 6 hours each day for 4 days a week
she earns £360 each week
How much does Carly earn each hour
Answers
Answer:
the answer is £15
Step-by-step explanation:
Carly works 6 hours for four days 6x4= 24
so she worked for 24 hours we know that she makes £360 per week.
so we divide 360 by 24 which gives us the total of
£15 per hour
the sum of a particular two digit number is 11. if this number's digits are reversed, the number is decreased by 63. what is this number?
Answers
The required number is 94.
Let the digit on unit's place be 'x'
Digit on ten's place be 'y'
Therefore,
Original number = 10y + x
Given, the sum of the digits = 11
=> x + y = 11 →(I)
When the digits are reversed, new number = 10x + y
Therefore,
(10y + x) - (10x + y) = 63
10y + x - 10x - y = 63
9y - 9x = 63
=> y - x = 7 →(II)
Adding (I) and (II) we get
2y = 18
y = 9
Substituting the value of y in (I) we get
x + 9 = 11
x = 2
Therefore,
Original number = 10y + x = 10(9) + 4 = 94
The required number is 94.
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2) Find the slope of the line passing through the points (5, 5) and (2, -3).
Answers
the answer is 1 but it could be a I took the test
Write the point-slope form of the equation of the line that passes through the origin and has a slope of 2. a. using variables, write out the formula for the point-slope form of the equation. b. identify the values for m, x1, and y1. c. fill these values into the point-slope form of the equation from part (a), and simplify as needed. use the box provided to submit all of your calculations and final answers.
Answers
The point slope form of the equation is = P2 = (11, 2)
What is point slope?The equation of a straight line that passes through a particular point and is inclined at a specific angle to the x-axis can be found using the point slope form. Every point on a line must satisfy the equation for the line in order for it to exist. This implies that a line is represented by a linear equation in two variables. Depending on the facts at hand, there are different ways to find a line's equation. Several techniques include:Form of point slopeForm of a slope-interceptTwo-point form for interceptingacc to our question-
Since m = and P1 = (2, -1) then x1 = 2 and y1 = -1. 1y – y1 = m (x – x1)y – (-1) = (x – 2)y + 1 = (x – 2)3 (y + 1) = 1(x – 2)3y + 3 = x – 25 = x – 3y or x – 3y = 5(This the standard formula of the line)Step 2: Calculate P2.Select any valueyou with for x or y and substitute it into the equation found instep 1. For this example y will equal 2.x – 3y = 5x – 3(2) = 5x – 6 = 6x = 11learn more about slope click here:
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Taub is saving up to buy a new bicycle. She already has $70 and can save an additional $10 per week using money from her after school job. How much total money would Taub have after 7 weeks of saving? Also, write an expression that represents the amount of money Taub would have saved in w weeks.
Total savings after 7 weeks:
Total savings after w weeks:
Answers
Total savings after 7 weeks : $140
Total savings after w weeks : $(70 + 10w)
What is Equation Modelling?Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem.
Given is a phrase : Taub is saving up to buy a new bicycle. She already has $70 and can save an additional $10 per week using money from her after school job.
Taub will have a total of -
70 + 7 x 10 = $140
The expression that represents the amount of money Taub would have saved in [w] weeks is -
y = 70 + 10w
Therefore -
Total savings after 7 weeks : $140
Total savings after w weeks : $(70 + 10w)
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Aaliyah was given a gift card for a coffee shop. Each morning, Aaliyah uses the card to
buy one cup of coffee. The original amount of money on the gift card was $30 and
each
сир of coffee costs $2. Make a table of values and then write an equation for A,
in terms of x, representing the amount money remaining on the card after buying a
cups of coffee.
Answers
The equation in terms of x, which represents the amount of money left on the gift card of Aaliyah upon buying a cup of coffee is; A = 30 - 2x dollars.
Define the term equation?A single mathematical phrase is referred to as a term. It could be a single number (negatively or positively), a single variable (a letter), or a combination of variables multiplied but still never added or eliminated. Variables with such a number ahead of them are used in some words. A coefficient is the number that appears ahead of a phrase.The original value of the gift card was $30.
Coffee costs $2 per cup.
Let 'x' be the number of cup of coffee purchased by Aaliyah.
Total cost be 'A' be paid by her.
Thus, the equation in terms of x, which represents the amount of money left on the gift card upon buying a cup of coffee is;
A = 30 - 2x dollars.
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the normal model n(58, 21) describes the distribution of weights of chicken eggs in grams. suppose that the weight of a randomly selected chicken egg has a z-score of 1.78. what is the weight of this egg in grams? round to the nearest hundredth of a gram.
Answers
The weight of the eggs in grams 95.38 grams.
Let X the random variable that represent the weights of a population, and for this case we know the distribution for X is given by:
X ~ N(58,21)
where µ = 58 and σ = 21
The z score for this case is given by this formula:
z = x - µ/σ
We know that the value of z = 1.78 and we want to estimate the value of X. If we solve for X from the z formula we got:
X = µ+1.78σ
= 58 + 1.78×21
= 95.38
So, the corresponding weight for a z score of 1.78 is 95.38 grams.
Hence we get the required answer.
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when the decimal point of a certain positive decimal number is moved four places to the right, the new number is four times the reciprocal of the original number. what is the original number?
Answers
The original number from the given decimal number is 0.02.
Define the term reciprocal of the number?A multiplicative inverse of such a number is referred to as the reciprocal. In other words, 1 divided by a number is the definition of the reciprocal. Any given number multiplied by its reciprocal would always yield the value 1. By swapping the values of a numerator and denominator, one can find exact reciprocal of a fraction.For the given question;
Moving a decimal point 4 places towards the right corresponds to multiplying the given integer by 10,000 if it is x.
This results in:
10000x = 4.(1/x)
Simplifying.
x² = 4/10000
x > 0.
Taking square root of the number.
x = 2/100
x = 0.02
Thus, the original number from the given decimal number is 0.02.
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you have 600 ft of fencing to make a pen for hogs. if you have a river on one side of your property, what are the dimensions (in ft) of the rectangular pen that maximize the area?
Answers
The dimensions that maximize the area are 150ft × 300ft.
What do we mean by dimensions?A topological measurement of an object's dimension is the extent of its covering qualities. It is, essentially, the number of coordinates required to specify a location on the object. A cube is three-dimensional, whereas a rectangle is two-dimensional.So, let y be the length of the side parallel to the river and x be the length of each of the two sides perpendicular to it.
The following provides the total fencing length:
2x + y = 600y = 600 - 2xThe rectangular pen's surface area is:
A = xyA = x(600 - 2x)A = 600x - 2x²We may determine the value of x required to maximize the area by determining the value of x for which the derivative of the area function is zero:
dA(x)/dx = d(600x - 2x²)/dx0 = 600 - 4xx = 150The value of y is: for x=150
y = 600 - 2x = 600 - (2 × 150)y = 300Therefore, the dimensions that maximize the area are 150ft × 300ft.
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an iq test is designed to have scores that have a standard deviation of . a simple random sample of students at a large university will be given the test in order to construct a confidence interval for the mean iq of all students at the university. how many students must be tested so that the margin of error will be equal to points?
Answers
The sample size required in this case is 71 pupils, which must be tested in order for the margin of error to be equal to 3 points.
When it comes to statistics, selecting a relatively small representative sample and conducting hypothesis testing on it typically makes it easier to analyze a large population. By boosting the sample size, the margin of error, which represents the sampling procedure's statistical precision, can be decreased.
From standard normal tables,
P( -2.326 < Z < 2.326) = 0.98 here
The sample size required here is computed as:
n = [(z * α) / МОЕ]² = [(2.326 * 18) / 5]² = 70.12
Therefore, the required sample size, in this case, is 71.
To ensure that the margin of error is equivalent to 3 points, 71 students must be assessed.
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COMPLETE QUESTION:
An IQ test is designed to have scores that have a standard deviation of a 10. A simple random sample of students at a torgo university will be given the test in order to construct a 95% confidence interval for the mean 10 of all students at the university. How many students must be tested so that the margin of error will be equal to 3 points? The sample size required for the desired margin of error is.(Round your answer to next whole number.)
10. Each term in a sequence is generated by
multiplying the previous term by 3 and then
adding 2. If the first term is -3, what will the 6th
term be?
a. -487
b. -165
C. -57
d. 57
e. 165
2
Answers
The 6th term is -487 i.e, option(a)
What is a Sequence ?
A sequence is an ordered list of objects (or events). Like a set, it contains members (also called elements, or terms). The number of ordered elements (possibly infinite) is called the length of the sequence.
There are 4 types of sequence, arithmetic sequences, geometric sequences, quadratic sequences and special sequences.
Given, the 1st term = -3
According to question, we get the term by multiplying the previous term by 3 and then adding 2.
Now, calculate the other terms.
so, the 2nd term will be
-3 * 3 + 2 = -7
3rd term
-7 * 3 + 2 = -19
4th term
-19 * 3 + 2 = - 55
5th term
-55 * 3 + 2 = -163
6th term
-163 * 3 + 2 = -487
Hence, the 6th term is -487 i.e, option(a)
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The correlation coefficient (r) between the number of hours worked x and the amount of money earned y is 0.456.
What percent of the variation in the amount of money earned can be explained by differences in the number of hours worked?
Answers
The percent of the variation in the amount of money earned can be explained by differences in the number of hours worked 20.8%.
Given that, the correlation coefficient (r) between the number of hours worked x and the amount of money earned y is 0.456.
What is the correlation coefficient?The correlation coefficient describes how one variable moves in relation to another. A positive correlation indicates that the two move in the same direction, with a value of 1 denoting a perfect positive correlation. A value of -1 shows a perfect negative, or inverse, correlation, while zero means no linear correlation exists.
The percent of the variation in the dependent variable that can be explained by the independent variable is called coefficient of determination, which is r².
In this case, r = 0.456. So r² = 0.456² = 0.208
That means 20.8% of the variation in the amount of money earned can be explained by differences in the number of hours worked.
Therefore, the percent of the variation in the amount of money earned can be explained by differences in the number of hours worked 20.8%.
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The graph of a quadratic function with vertex (-3,1) is shown in the figure below. Find the range and the domain
Answers
The domain of the given quadratic function is { -3 }
and range is { 1 }
What is a domain and range ?A function's domain is the set of values that can be plugged into it. This set symbolizes the x values in a function like f. (x). Additionally, we can deduce that a function's range refers to the set of values it can accept. There are values in this set that the function returns when we enter an x value.
The domain of the given quadratic function is { -3 }
and range is { 1 }
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71.
For what values of x is the above
inequality true? -12>6x
A. x > -6
B. x < -6
C. x < -2
D. x > -2
Answers
When solving for x in an inequality, it is a similar process to solving for x in an equation. The only exception to this rule is when you are multiplying or dividing a negative to solve for x, in which case you need to flip the sign to preserve the inequality. Since 6 is nonnegative and you are dividing -12 the sign does not switch. A good way to make sure that you did not make a mistake is to find a number that satisfies both equations for values for x.
a recent survey showed that 9393 full-time employees out of a sample of 400400 did not use all of their vacation days last year. however, 118118 of those studied expressed a desire for more vacation time. based on this sample, if a full-time employee is chosen at random, what is the probability that he or she is content with the vacation allowance? express your answer as a fraction in lowest terms or a decimal rounded to the nearest millionth.
Answers
The probability that he or she will be happy with the travel reimbursement will be 0.705.
The number of people who requested more vacation time indicates that they are plainly dissatisfied.
400 employees are satisfied with the vacation allowance. - The number of workers that requested greater vacation time.
Employees who are satisfied with their vacation pay are represented by the numbers 400 - 118 = 282.
The likelihood that he or she will be happy with the vacation allowance =
Employees that are happy with their vacation pay / Total number of employees
= 282 / 400 = 0.705.
Therefore, the likelihood that he or she will be happy with the vacation allowance = 70.5%
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Write the equation of the line in fully simplified slope-intercept form.
ANSWER ASAP
WILL GIVE BRAINLIEST
Answers
The equation of the line in fully simplified slope - intercept form is 5x + 4y = 12 .
In the question ,
a graph of the line is given , we need to find the equation of the given line in the simplified slope - intercept form .
to find the equation , we need minimum two points ,
So , from the given graph ,
we can find that
when x [tex]=[/tex] 0 , the value of y [tex]=[/tex] 3 ,
the first point is (0 [tex],[/tex] 3) .
when x [tex]=[/tex] 4 , the value of y [tex]=[/tex] -2 ,
the second point is (4 [tex],[/tex] -2) .
the slope can be calculated by
slope = (-2-3)/(4-0)
= -5/4
So , the equation of the line passing through point (4,-2) with slope -5/4 , in the slope intercept form is
(y -(-2)) = (-5/4)(x-4)
y + 2 = (-5/4)x + 5
y = (-5/4)x + 5 - 2
y = (-5/4)x + 3
Simplifying further , we get
4y = -5x + 12
5x + 4y = 12
Therefore , The equation line in fully simplified slope - intercept form is 5x + 4y = 12 .
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What is the solution to the following equation?
x² + 3x + 7 = 0
A. x= 3+-√25/2
B. x= -3+-√37/2
C. x= -3+-√²7/2
D. x= -3+-√-19/2
Answers
Answer: D
Step-by-step explanation:
Answer: Choice D
[tex]x = \frac{-3\pm\sqrt{-19}}{2}\\\\[/tex]
==================================================
Explanation:
Compare the given equation x² + 3x + 7 = 0 to ax² + bx + c = 0 to find that,
a = 1b = 3c = 7Those values are plugged into the quadratic formula to get the following:
[tex]x = \frac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\x = \frac{-3\pm\sqrt{(3)^2-4(1)(7)}}{2(1)}\\\\x = \frac{-3\pm\sqrt{-19}}{2}\\\\[/tex]
which points us to choice D being the final answer.
--------------
Side note:
The discriminant [tex]d = b^2 - 4ac = (3)^2-4(1)(7) = -19[/tex] is negative, so there are no real solutions. Instead, the two solutions are non-real complex numbers.
Look at this graph:
What is the slope?
Answers
Answer:
4/3x
Step-by-step explanation:
You work at a restaurant as a host and a server. You earn $9.45 for each hour you work as a host and $7.65 for each hour you work as a server.
a. Identify an equation in standard form that models your earnings.
Responses
7.65x+9.45y=160.657 point 6 5 x plus 9 point 4 5 y is equal to 160 point 6 5
y=17x+160.65y is equal to 17 x plus 160 point 6 5
9.45x+7.65y=160.659 point 4 5 x plus 7 point 6 5 y is equal to 160 point 6 5
9.45x−7.65y=160.659 point 4 5 x minus 7 point 6 5 y is equal to 160 point 6 5
Question 2
b. Graph the equation.
Keyboard Instructions
Initial graph state
The horizontal axis goes from -1.4 to 22.4 with ticks spaced every 2 unit(s).
The vertical axis goes from -1.4 to 22.4 with ticks spaced every 3 unit(s).
Hours worked as hostHours worked as server
Answers
Answer:
7
Step-by-step explanation:
65x+9.45y=160.657 point 6 5 x plus 9 point 4 5 y is equal to 160 point 6 5
I need help understanding domain and range better. I am in algebra 1 in high school freshmen
Answers
The domain and the range of a function have the concepts given as follows:
Domain: input values of a function/relation.Range: output values of a function/relation.What are the domain and range of a function?The domain of a function or of a relation is the set that contains all possible input values. Hence, among possible representations, we have that:
In a graph, the domain is composed by the values of x.In a relation of points (x,y), the domain is also composed by all the values of x.For a function, the domain is composed by all values that respect the restrictions of a function. For example, in a fraction, the domain is composed by all values for which the denominator is not zero.The range of a function or of a relation is the set that contains all possible output values. Hence, among possible representations, we have that:
In a graph, the domain is composed by the values of y.In a relation of points (x,y), the domain is also composed by all the values of y.For a function, the range is composed by all the numeric values assumed by the function inside it's domain.More can be learned about the domain and the range of a function or of a relation at https://brainly.com/question/10197594
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A red-throated loon is a type of diving bird that dives for its food. One particular loon dives for 8 seconds to a depth of 12 feet under the surface of the water. A. Assume the loon dives at a constant rate. Write an equation that can be used to represent the elevation, y, of the loon after x seconds into the dive. B. If the loon is at a depth of 22 feet under the surface of the water, how long was it diving for? Show your work.
Answers
The equation representing the elevation of the loon and the time of the dive is 3x-2y = 0, and the Loon has been diving for 14.67 seconds.
The red throated loon dived down to a distance of 12 feet under the water in 8 seconds.
We can assume that the loon is diving at a constant rate.
The relation between the elevation wise of the loan after 1 second into the dive can be represented by the linear equation which has the slope,
Slope = 12/8
Slope = 3/2
Now as we have the slope of the equation we can write the equation by using the point slope form, with the point, (8,12)
(y - 12)/(x - 8) = 3/2
2y - 24 = 3x - 24
3x - 2y = 0
This is the equation that represent the elevation y of the loan after x seconds.
When the elevation of The Loon is 22 feet,
We can put y = 22,
3x = 2(22)
x = 14.67 seconds.
So, the loon has been diving for 14.67 seconds.
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NEED HELP ASAP!!!!!!!!!!!!!!
Answers
The number of solutions each polynomial has is 1, 5 and 3
What is a polynomial?In mathematics, a polynomial is an equation made up of coefficients and indeterminates, sometimes referred to as variables. Only addition, subtraction, multiplication, and powers of positive-integer variables may be used to solve it. An example of a polynomial with one undetermined x is x2 4x + 7.
Polynomials are often employed in both mathematics and science. In fundamental chemistry and physics, economics, and social science, for example, they are used to define polynomial functions. They are also employed in calculus and numerical analysis to approximate other functions. From straightforward word problems to intricate scientific conundrums, polynomial equations are utilized to represent a broad variety of topics. polynomials' usage in complex maths.
The number of solutions of a polynomial is equal to the highest degree of the polynomial.
So,
1) y = -6x -9
Has 1 solution as highest degree = 1
2) y = 2x⁵-x⁴ +2x³-6x²+2x+4
Has 5 solutions as highest degree = 5
3) y = -4x³-10x² +7x+5
Has 3 solutions as highest degree = 3
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Jayden has two jobs. One week his paycheck was the same for both jobs. As a server
he earned $9.64 per hour plus $82.35 in tips. Working at a jewelry store he earned
$14.86 per hour plus $17.10 in sales bonuses. Write an equation that can be used to
determine the number of hours, h, that Jayden worked the week his paycheck was the
same for both jobs.
Create an equation
Answers
The equation for Jayden's paycheck is,
$9.64h+ 82.35= $14.86h+ $17.10
How to construct an algebraic equation?
STEPS TO CONSTRUCT AN ALGEBRAIC EQUATION---
Identify the inquiry being made.Simple statements should be used to record pertinent information.Assign symbols to values that are still unknown.Calculate the mathematical relationships between the assertions.let the number of hours Jayden works be h hours.
so, Jayden has got the total from the jewelry store is,,$9.64h+ 82.35
Jayden has got the total from the sales bonuses is, $14.86h+ $17.10
so, the total paycheck from the jewelry store is,,$9.64h+ 82.35
and from the sales bonuses is $14.86h+ $17.10.
as they are equal, the equation is, $9.64h+ 82.35= $14.86h+ $17.10
Hence, the equation is,$9.64h+ 82.35= $14.86h+ $17.10
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its easy but i dont want to do it because im to lazy
Answers
The equation of the given line written in the slope-intercept form is: y = 21x + 10.25.
What is a slope?
The slope or gradient of a line in mathematics is a quantity that specifies both the direction and the steepness of the line.
Note that the general slope equation is:
y = mx + b
Where
m is the slope of the line and
b is the y-intercept.
In this specific instance, m is the change in the price of the ticket
b is the additional fee value that needs to be included for each ticket
Hence, the cost of the ticket (y) is given as:
y = (change rate of x) + added fee to every order
Where rate of change = 21; and
The fee added to each order is 10.25
Given the above, the general equation becomes:
y = 21x + 10.25
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A regular polygon has 16 sides. If one of its angles measures (5h − 29)°, what is the value of h?
Answers
Answer:10.3
Step-by-step explanation:
16(5h-29)=360
80h-464=360
80h-464+464=360+464
80h/80=824/80
h=10.3
an envelope contains eight bills: ones, fives, tens, and twenties. two bills are drawn at random without replacement. what is the probability that their sum is $ or more?
Answers
Using the concepts of probability, we got 0.5 is the probability of drawing the sum $20 or more when two bills are drawn randomly without replacement.
We have an envelope contains 8 bills;
Two of $1 bills, Two of $5 bills, Two of $10 bills, Two of $20 bills.
When two bills are drawn randomly without replacement, we have to find the probability that their sum is $20 or more.
Total outcomes = 2 x 2 x 2 x 2 = 16
Total possible outcomes, more than 20;
(1, 20), (20, 1), (5, 20), (20, 5), (10, 10), (20, 10), (10, 20), (20, 20) = 8 cases
That is,
The total possible outcomes is 8.
Now,
The probability of bill to be $20 or more = Possible outcome / Total outcome
Probability = 8/16 = 1/2=0.5
Hence, When two bills are drawn randomly without replacement, the probability that their sum is $20 or more is 0.5.
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(Complete question)
an envelope contains eight bills: 2 ones, 2 fives, 2 tens, and 2 twenties. two bills are drawn at random without replacement. what is the probability that their sum is $20 or more?
at a certain university, the average attendance at basketball games in the previous year was 3000 spectators per game. the athletic director claims that the attendance this season is up from last year. for the first 14 games of the current year, there has been an average of 3200 spectators per game with a standard deviation of 450. using a significance level of .05, does this sample data provide evidence to support the athletic director's claim?
Answers
The p-value is higher than 0.05, so we are unable to rule out the null hypothesis. There is little proof to back up the director's claim.
Hypothesis:
H₀ : μ = 3000
H₁ : μ > 3000
The t-test should be employed when the population mean and standard deviation are unknown. Since the sample size is high, we can infer that the sample mean's sampling distribution is normal.
The following information is provided:
s = 450
x = 3200
n = 14
Therefore, test statistics will be:
t = (x - μ) / (s / √n) = (3200 - 3000) / (250 / √14) = 1.66
The test in this instance is right-tailed, and its degree of freedom is df=n-1=14-1=13.
0.0601 is the p-value.
We are unable to reject the null hypothesis since the p-value is higher than 0.05. The director's allegation is not supported by a lot of evidence.
Since p =.0601, the director's assertion cannot be supported by the available data.
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-9 (9x -6) = 3 (4x+6)
Answers
Answer:
[tex]-9 (9x -6) = 3 (4x+6) \\ - 9 \times 9x + 9 \times 6 = 3 \times 4x + 3 \times 6 \\ - 81x + 54 = 12x + 18 \\ -81x - 12x = - 54 + 18 \\ - 93x = - 36 \\ x = \frac{36}{93} \\ x = \frac{18}{46.5} \\ x = 0.3870967742[/tex]
What does the average rate of change represent in the context of the question? Use complete sentences.
Laura is planning to attend a soccer skills camp that will require her to complete different skills tasks in the fastest time possible. To get ready for the event, she is practicing and logging her time to complete each skills task.
The x-coordinate is the skills task number, and the y-coordinate is the time in seconds.
(1, 4), (2, 8), (3, 16), (4, 32)
Answers
The rate of change here represents the time in seconds it takes her to perform a certain number of skills task
What is the meaning of the average rate of change?The rate of change is defined as the rate at which one quantity is changing with respect to another quantity. Mathematically:
rate of change = change in y / change in x
Given that: The x-coordinate is the skills task number and the y-coordinate is the time in seconds
Thus, rate of change = time in seconds / skills task number
Therefore, the rate of change in this context represents the time in seconds it takes to perform a certain number of skills task
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1. Vanessa works as an event planner during the summer. She makes $50 for every birthday
party she plans and $100 for every wedding she plans. Her goal every summer is to make
$1000 to put towards college. Write an equation that represents the number of parties (x) and
the number of weddings (y) that Vanessa could plan during the summer in order to meet her
$1000 goal:
Answers
The required equation for the given condition is 50x + 100y = 1000.
What is an algebraic expression?
An expression constructed using integer constants, variables, and algebraic operations is known as an algebraic expression (addition, subtraction, multiplication, division, and exponentiation by an exponent that is a rational number).
Given, the charge for every birthday party =$50
number of birthday parties = x
So, the total charge for birthday parties = 50x
the charge for every wedding = $100
the number of weddings = y
So, the total charge for the wedding = 100y
Then,
Total amount achieve = $1000
or, 50x + 100y = 1000
Hence, the required equation is 50x + 100y = 1000.
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