Answer:
Slope is equal to the change in y y over the change in x x, or rise over run. m = change in y change in x m = change in y change in x. The change in x x is equal to the difference in x-coordinates (also called run ), and the change in y y is equal to the difference in y-coordinates (also called rise ). m = y2 −y1 x2 −x1 m = y 2 - y 1 x 2 - x 1.
[tex]3\sqrt{6w-288[/tex]
HELP MEEE PLEASEEEE
Answer:
5.8 cm
Step-by-step explanation:
the Pythagorean theorem states that a^2=b^2+c^2, where a is the hypotenuse, and b and c are the legs. Plugging in your values, we get:
4^2 + 4.2^2 = a^2
Simplify: 16 + 17.64=a^2
Simplify again: 33.64 = a^2
Square root both sides: 5.8 = a
Please Help ASAP!!!!!
Answer:
the forth (7,2).........
The variable p represents number of presents. If it takes 10 feet of ribbon to make 1 bow on a present and 3 feet is used to practice trying the bow, the expression 10p + 3 can be used. If there are 7 presents, how much ribbon is needed? Ribbon is sold in 15 feet packages. How many do you need to buy?
The number of ribbons needed is 73
The number of ribbons to buy is 109. 5
What is a function?A function can be described as an expression or rule that explains the relationship between two main variables in an equation.
These variables are called;
Independent variableDependent variableWe have the expression;
N = 10p + 3
Where 'p' represents the number of presents
N is the number of ribbons
Now, let's substitute the value of p as 7
N = 10(7) + 3
N = 70 + 3
N = 73 ribbons
If 10 feet = 73 packages
15 feet = x
cross multiply
x = 73(15)/10
x = 109. 5 ribbons
Hence, the value is 73
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Scores for a common standardized college aptitude test
are normally distributed with a mean of 507 and a
standard deviation of 104. Randomly selected students
are given a Test Preparation Course before taking this
test. Assume, for sake of argument, that the
preparation course has no effect.
If 1 student is randomly selected, find the probability
that their score is at least 555.3.
P(X> 555.3) =
The probability that their score is at least P(X> 555.3) = 0.8275
What is a normal distribution?
A continuous probability distribution for a real-valued random variable is called a normal distribution or a Gaussian distribution.
Here, we have
Let x denotes the score of a man.
standard deviation (σ) = 104
mean (μ) = 507
If 1 of the men is randomly selected, find the probability that his score is at least 553.5 will be :-
P(X > 553.5) = 1 - P(X ≤ x)
= 1 - P{((x - μ)/σ) ≤ (553.5 - 507/104)}
= 1 - P(z ≤ 0.447)
= 1 - 0.1725
= 0.8275
Hence, the probability that their score is at least P(X> 555.3) = 0.8275
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Is y−4=3(x+1) an equation of a line through (-2, 1)? Explain.
Answer:
Yes
Step-by-step explanation:
(1)-4=3((-2)+1)
-3=3(-1)
-3=-3
The answer is yes because if you substitute x and y for -2 and 1 you can simplify the equation. Then you get the answer -3=-3 which means that the equation is equal.
The radius of a circle is 599 cm. What is the diameter of this circle?
Answer:
1,198 cm
Step-by-step explanation:
To find the diameter, use the formula d = 2r.
d = 2(599)
d = 1,198
The exponential model describes the population, A, of a country in millions, t years after 2003. Use the model A=384. 7e^0. 018t to determine when the population of the country will be 513 million.
The population of the country will be 513 million in __. (Round to the nearest year as needed. )
The population of the country will be 513 million in 2016 with The exponential model A=384. 7e^0. 018t describes the population, A, of a country in millions, t years after 2003.
What is exponential model?The exponential model represents the degrading failure process using an equation like: where Y = degradation, T = time, and A and B = parameters to be predicted using the regression approach using historical data. Exponentials are frequently utilized when the rate of change of a quantity is proportional to its beginning amount. Y represents exponential decay if the coefficient associated with b and/or d is negative. Y represents exponential growth if the coefficient is positive.
Here,
A = 384. 7e^0. 018t
513=384. 7e^0. 018t
513/384.7= e^0.018t
ln(513/384.7) = 0.018t
ln(513/384.7)/0.018 =t
t=15.9895575229 years
t=16 years
2003+16= 2019
In 2016, the country's population will be 513 million people. The exponential model A=384. 7e^0. 018t explains a country's population, A, in millions, t years after 2003.
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Using completing the square method to solve x^2-10x+25=0
The solution of the expression, [tex]x^{2} -10x+25 = 0[/tex], using completing the square method is [tex](x-5)^{2}[/tex].
According to the question,
We have the following expression:
[tex]x^{2} -10x+25 = 0[/tex]
Now, we will use completing the square method to solve this expression.
We will first try to convert the first and last term into perfect squares and rewrite the expression by splitting the middle term in multiplication of 2 and the squares .
[tex]x^{2}[/tex]-2*x*5+[tex]5^{2}[/tex] = 0
Now, we know that this expression fits in the identity:
[tex](a-b)^{2} = a^{2} +b^{2} -2ab[/tex]
In this case, we have a = x and b = 5
[tex](x-5)^{2}[/tex]
Hence, the solution of the expression, [tex]x^{2} -10x+25 = 0[/tex], using completing the square method is [tex](x-5)^{2}[/tex].
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What are some vocabulary words for slopes and equations in math?
Answer:
Vocabulary: slope and variable m rise over run slope formula y-intercept/variable b parallel lines and parallel equation perpendicular lines and perpendicular equatio Introduce or review key terms related to slope and angle: slope, grade, pitch, cardinal direction, slope angle, angle of depression/declination, and angle of elevation/inclination.
Kylie just accepted a job at a new company where she will make an annual salary of $67000. Kylie was told that for each year she stays with the company, she will be given a salary raise of $3000. How much would Kylie make as a salary after 3 years working for the company? What would be her salary after t years?
The amount that Kylie make as a salary after 3 years working for the company is $76000.
Her salary after t years will be 67000 + 3000t.
How to calculate the value?In this situation, Kylie was told that for each year she stays with the company, she will be given a salary raise of $3000 every years.
Her salary after three years will be:
= $67000 + ($3000 × 3)
= $67000 + $9000
= $76000
Her salary after t years will be:
= 67000 + (3000 × t)
= 67000 + 3000t
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-4x+3y=2
3x-9y=3
Is (4,1) a solution of the system?
Answer:
not a solution
Step-by-step explanation:
we can just fill it in on both equations
-4(4)+3(1)=2
-16+3=2
-13=2
It doesn’t work for this equation so it’s not a solution
Hopes this helps please mark brainliest
Answer:
No
Step-by-step explanation:
For (4, 1 ) to be a solution then both equations must be true
substitute x = 4 and y = 1 into both equations
- 4(4) + 3(1) = - 16 + 3 = - 13 ≠ 2
3(4) - 9(1) = 12 - 9 = 3
Since both equations are not true then (4, 1 ) is not a solution of the system.
In the figure below, a pole has two wires attached to it, one on each side, forming two right triangles.
Based on the given information, answer the questions below. Round each answer to the nearest tenth.
Part A: How tall is the pole? Show your work.
Part B: How far from the base of the pole does Wire 2 attach to the ground? Show your work.
Part C: How long is Wire 1? Show your work.
The answers are a) 29.55 ft, b) 23.08 feet and c) 45.05 feet
What are trigonometric ratios?Trigonometric Ratios are defined as the values of all the trigonometric functions based on the value of the ratio of sides in a right-angled.
Given is a figure, of two wires 1 and 2 attached to a pole and ground
Using trigonometric ratios, we have,
a) tan41° = Height of pole/34
Height of pole = tan41°x34
Height of pole = 29.55 ft
b) tan38° = (distance of wire 2 from the base of pole)/29.55
Distance of wire 2 from the base of pole = tan38°x29.55 = 23.08 feet
c) cos41° = 34/length of wire 1
Length of wire 1 = 34/cos41°
Length of wire 1 = 45.05 feet
Hence, The answers are a) 29.55 ft, b) 23.08 feet and c) 45.05 feet
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Simplify the power.
(-3x²y)^4
Using exponents, the resultant expression after simplification is 81x⁸y⁴.
What are exponents?The way of representing huge numbers in terms of powers is known as an exponent. Exponent, then, is the number of times a number has been multiplied by itself.For instance, the number 6 is multiplied by itself four times, yielding 6 × 6 × 6 × 6. You can write this as 6⁴. In this case, the exponent is 4 and the base is 6.So, the expression is:
(-3x²y)⁴Now, simplify the power as follows:
(-3x²y)⁴(-3x²y)⁴ = (3x²y)⁴ (Exponent rule)3⁴(x²)⁴y⁴ (Exponent rule)81((x²)⁴y⁴ (3⁴ = 81)81x⁸y⁴Therefore, using exponents, the resultant expression after simplification is 81x⁸y⁴.
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a journalist for an automotive magazine wants to determine how the weight of a passenger vehicle, in kilograms, is related to its length, in centimeters; the maximum number of passengers; and its safety rating on a 5-point scale. what is the correct format for a multiple regression equation?
the correct format for a multiple regression equation is
ŷ= [tex]b_{o} + b_{1}x_{1} + b_{2}x_{2} + b_{3}x_{3} + b_{4}x_{4}[/tex]
multiple regression: The relationship between a single dependent or criterion variable and multiple independent or predictor variables is typically explained by multiple regression. The constant term and multiple independent variables with their corresponding coefficients are used to model a dependent variable. The term "multiple regression" refers to the fact that it requires two or more predictor variables.
because, the weight of a passenger vehicle, in kilograms, is related to its length, in centimeters; and the maximum number of passengers.
thus, ŷ=[tex]b_{o} + b_{1}x_{1} + b_{2}x_{2} + b_{3}x_{3} + b_{4}x_{4}[/tex] is the multiple regression equation.
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I need help with this graph what is the root or factored form of this? Thank you!
Answer:
(2.5×20)2=100 then square root of 100;
✓100=10
Hence answer is 10
I need to know the constant of proportionality for each table and equation. I also need to know what the answer to the question on the bottom is.
Please show your work too. (Important)
The constant of proportionality for each table are 5, 2/3, 4, 1/5, 3, 2 and 1/2 while that of the equations are 1/8, 1/3 and 3/2
How to determine the constant of proportionality for each table and equation?
The constant of proportionality is the ratio of the y value to the x value i.e.
constant of proportionality(k) = y/x
To find the constant of proportionality for each table, just pick any non-zero corresponding x and y values on the table and find the ratio:
Using constant of proportionality(k) = y/x
1. y/x = 5/1 = 5
2. y/x= 4/6 = 2/3
3. y/x = 2/0.5 = 4
4. y/x= 2/10 = 1/5
5. y/x = 9/3 = 3
6. y/x = 8/4 = 2
7.y/x = 6/12 = 1/2
For the equations, just rewrite the equations in order to make y/x the subject:
8. y =1/8 x
y/x = 1/8
9. 6y = 2x
y/x = 2/6 = 1/3
10. 4y = 6x
y/x = 6/4 = 3/2
Therefore, the constant of proportionality for each table and equation are 5, 2/3, 4, 1/5, 3, 2, 1/2 and 1/8, 1/3, 3/2 respectively
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If your weekly salary is $1,015.00, how much do you have left each week after you pay for the following? Rent - $443.50 Cable TV -$23.99 Electricity - $45.62 Groceries - $124.87 ?
(need explanation.)
can anyone please help with this! it’s so confusing! 100 points to whoever can help me with all of them! and please show how u did it not just answers!! tysm
Answer:
Step-by-step explanation:
(a is in the file)
B. An add 3 inches to height would affect the surface area more than 3 inches to weight because if the same number was multiplied to 0.13 and 0.08… 0.13 would have the greater outcome.
c. a number more than 10 but less than 11 is 10.5
The height is 50 so plug those two numbers into the equation
10.5=0.08W+(0.13)50-1.03
10.5=0.08W+ 6.5-1.03
10.5=0.08W+5.47
Subtract 5.47 from both sides
5.3=0.08
Divide by 0.08 on both sides
= 62.87lbs in one possibility for the value of W
D. a number between 12 and 13 is 12.5
12.5= 0.08w+ 0.13H-1.03
Subtract 1.03 on both sides
11.47= 0.08w+ 0.13H
Divide 11.47 in 2 so that weight and height can be added up to equal 11.47 in the end
5.73=0.08 5.73=0.13
71.68=W 44.07=H
what does the degree tell you about the zeros of the function of x^3+8x^2+11x-20?
Answer:
Step-by-step explanation:
the degree of the function , also means how many zeros , or roots, There will be.
please help me out. i’ll give brainliest
Answer:
y = -2x + 1
Step-by-step explanation:
y = mx + b you must find the m (slope) and the b (y intercept) to write the equation for the graph.
The slope is negative. If you start on the very left side of the graph and follow it, you will see that it goes in a down hill direction. That means that the slope is negative. If I start on the very left and the line goes up from there, the slope is positive. If the line is a straight horizontal line, then the slope is zero, it does not go up or down.
The slope is -2. Select one of the dots and travel to the next dot, but you can only move horizonaly and vertically. You cannot move diagonally. You will notice that the two closes dots are two units up (or down) and only 1 unit left (or right) depending on which dot you start at. Since you move 2 units up and 1 unit left that is a slope of 2. 2/1 = 2.
The b (y-intercept) is just where you see the line cross the y axis. It crosses it at 1.
Answer:
y = -2x + 1
Step-by-step explanation:
Slope intercept form: y= mx + bHere m is the slope and b is y-intercept.
Pick any two points on the line.
(-1,3) & (2,-3).
Find the Slope.
[tex]\sf \boxed{Slope =\dfrac{y_2-y_1}{x_2-x_1}}[/tex]
[tex]\sf = \dfrac{-3-3}{2-[-1]}\\\\=\dfrac{-6}{2+1}\\\\=\dfrac{-6}{3}\\\\=-2[/tex]
m = -2.
Equation of the line:
y = -2x + b
Substitute any one point in the above equation and find the y-intercept. (-1,3)
3 = -2*(-1) + b
3 = 2 + b
3 - 2 = b
b = 1
Equation of the line:
y = -2x + 1
Write an equation in slope-intercept form
to represent the relationship between x
and y shown in the table.
X
Y
-10 -5 0 5
55
20
-15
-50
10
-85
Answer:
665-09
Step-by-step explanation:
What value of b will complete the square in the expression below and make the
expression a perfect square trinomial?
x²+bx+144
Enter the perfect square trinomial as a squared binomial.
At b= 24 will complete the square in the expression x^2 + bx + 144.
What is perfect square trinomial?
A perfect square trinomial expression can be created by taking the binomial equation's square. If and only if a trinomial satisfying the criterion b^2 = 4ac has the form ax^2 + bx + c, it is said to be a perfect square. The formula for the perfect square trinomial is (ax)^2 + 2abx + b^2 = (ax + b)^2.
Consider the given expression
x^2 + bx + 144
For this type of expression [tex]b = 2\sqrt{c}[/tex] will complete the square.
Here, c = 144
√144 = 12
So, b√c = 2(12) = 24
The expression becomes,
x^2 + 24x + 144 = (x + 12)^2
This is the perfect square.
Hence, b = 24 will complete the square in the expression x^2 + bx + 144.
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One of the support wires for a radio tower is
100 feet long. One end of the wire is 40 feet from
the base of the tower, as shown in the diagram
below.
Support wire
Note: The figure is not drawn to scale.
What angle (x), in degrees, does the support wire
make with the ground?
Using the trigonometry ratio, the value of angle x is 66.42°.
In the given question,
One of the support wires for a radio tower is 100 feet long.
One end of the wire is 40 feet from the base of the tower.
We have to find the angle (x), in degrees, that the support wire make with the ground.
To find the angle of x we use trigonometry ratio.
According to the ratio cosine is the ratio between base and hypotenuse.
So the formula is Cos x= B/H
where H = Hypotenuse
B = Base
From the given figure we know that, H=100 feet, B=40 feet
Now putting the value
Cos x= 40/100
Simplifying
Cos x = 2/5
Cos x = 0.4
So x = arccos(0.4)
x = 66.42
Hence, the value of angle x is 66.42°.
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1/x-2 identify the asymptotes
The vertical asymptote is x=2 and horizontal asymptote is y = 0
What are asymptotes?An asymptote is a straight line that constantly approaches a given curve but does not meet at any infinite distance. In other words, Asymptote is a line that a curve approaches as it moves towards infinity.
There are three types is asymptotes:
Horizontal asymptote , Vertical asymptote and oblique asymptote.
in the expression 1/x-2, the horizontal asymptote is y=0 since the power of x in the numerator is less than that of denominator.
And the vertical asymptote is found by equation the denominator to zero
therefore x-2= 0
x= 2
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A box contains 3 red marbles and 4 black marbles. You simultaneously draw 3 marbles. What is the probability
that at least one marble is black?
A.4/35
B.34/35
C.19/21
D.None of the above
Answer:
Probably b or c. Not great with probabilities.
HELPPP MEEeeeeeeeeee
at a bowling alley, the cost of shoe rental is $2.25 and the cost per game is $4.25. if f (n) represents the total cost of shoe rental and n games, what is the recursive equation for f (n)?
Answer:
The question is not complete so I am unsure what to solve for f(n)=$2.25x+4.25 or f(n)= $2.25x+4.25y
Step-by-step explanation:
Shoe rental $2.25
Per game $4.25
Depending on how many people are going to rent (x) and assuming they are only playing one game your equation would be
f(n)=$2.25x+4.25
However if the question does not state how many games are being played i would say
f(n)= $2.25x+4.25y
the little twelve basketball conference has two divisions, with six teams in each division. each team plays each of the other teams in its division twice and every team in the other division once. how many conference games are scheduled?
There are 96 basketball conference games are scheduled.
What is termed as the division?Multiplication is the reciprocal of division. If 3 groups of 4 add up to 12, then 12 classified into three groups of equal size results in 4 in each group. Developing equal groups or defining how many people are within each group after a fair distribution is the basic function of division.For the given question;
Every squad competes in ten games within its own division and six games against opponents from the opposing division. The 12 teams thus play a total of 16 conference games.There are N games on the schedule because there are two teams in each game.
N = 12×16/2
N = 96
Thus, there are 96 basketball conference games are scheduled.
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A football team receives the ball on their
own 10 yard line.
a. They make a gain of 15 yards in the first play. What yard line is the ball on?
b. What represents zero in this situation? Explain.x
The summation of 10 yards line and 15 yard is 25 yards and the ball represents zero situation when the ball is in net and goals.
Given,
The team receives the ball on their own yards = 10 yards.
that is,
initial position of the ball = 10 yards.
Using summation, (the summation is to add or subtract any two numbers or more terms by doing operation, to get answer).
They make a gain of 15 yards in the first play.
Their final position in 10 yards plus 15 yards
= 10 + 15
=25 yards.
Therefore, the yard line is 25 yards.
The zero situation of the game is when the ball is in net and the player make a goal.
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