The equation to find the original cost of hat is
44.80 = (x + 35) - (x+35)× 10/3
In the given question we have,
Ms. emlyn buys a hat and gloves with coupon for 30% off her entire purchase.
discount on total purchase = 30%
cost of gloves before discount = $35
let the cost of hat be $x before discount . The bill paid by Ms emlyn after discount but without tax = $44.80
total cost ( hat+gloves) before discount= $(x+35)
Now, after sum up all information we get,
$(x+35) - 30%discount on $(x+35) = $44.80
=> x+35 - (x+35)100/30 = 44.80
=> x+35 - (x+35)10/3= 44.80
which is required equation for original cost of hat.
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help is needed, please and thank you
Answer:
f(- 5) = 7
Step-by-step explanation:
f(- 5) means what is the value of y when x = - 5
locate x = - 5 on the x- axis, go vertically up to meet the graph at (- 5, 7 ), then
f(- 5) = 7
g(x) = x-2
What is the Parent function and transformation
The parent function is y = x ; shift 2 units downwards.
Given,
In the question:
The function is :
g(x) = x - 2
Now, According to the question ;
Let's know
What is the Parent function and transformation?
The transformation of the parent function is shown in blue. It is a shift down (or vertical translation down) of 1 unit. Reflection. A reflection on the x-axis is made on a function by multiplying the parent function by a negative. Multiplying by a negative “flips” the graph of the function over the x-axis.
According to the above statement is;
g(x) = x -2
Hence, The parent function is y = x ; shift 2 units downwards.
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4) Identify all the zeros that make the function
true. f(x) = 2x² - 8
0
-2
2
-4
4
-8
The zero of the function f(x) = 2x² - 8 is ± 2.
Zeros of the function
Zero of the function means the values of x when f(x) is equal to 0. Which means that when f(x) = 0, x is a zero of the function.
Given,
Here we have the function f(x) = 2x² - 8.
Here we need to find the zero of the function.
As per the definition of the zeros of the function,
We have to apply the value of f(x) = 0, then we get,
2x² - 8 = 0
Now, we need the value of x only, so we have to move the other numbers to the other side , then we get,
2x² = 8
Now, move the number 2 to the right hand side then it will be dividing the number 8,
x² = 8/2
x² = 4
x = √4
Therefore, the value of x is ± 2.
So, the zeros of the function is either +2 or -2.
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What is the slope of the line that passes through the points (1, -9) and (4, -7)? Write your answer in the simplest form.
The slope of the line from the given points will be equal to 3/2 in the simplest form.
What is slope?It is possible to determine a line's direction and steepness by looking at its slope. Finding the slope between lines inside a coordinate plane can aid in anticipating if the lines are perpendicular, parallel, or none at all without physically using a compass.
As per the given points in the question,
(1, -9) and (4, -7).
x1 = 1 and x2 = 4
y1 = -9 and y2= -7
Slope = (x2- x1)/(y2- y1)
= (4 - 1)/(-7 - (-9))
Slope = 3/2
Therefore, the slope of the line will be 3/2.
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Linwood Marcus purchased a new couch for $878 and two end tables for $127 each. What is the sales taz
his purchase if he lives in Florida where the sales tax rate is 6 percent?
A. $57.89
B. $65.67
C. $60.30
D. $67.92
The sales tax of his purchase if he lives in Florida where the sales tax rate is 6 percent is $67.92
What is meant by percentage?The word "percent" comes from the Latin per centum, which means "hundred" or "by the hundredth." The symbol for "percent" emerged gradually from the Italian expression per cento, which means "for a hundred." The "per" was frequently shortened as "p." and eventually vanished. The "cento" symbol was simplified to two circles divided by a horizontal line, from which the contemporary "%" symbol was formed.
The abbreviation "pct.", "pct," and sometimes "pc" are also used. A % is a dimensionless (pure) number with no unit of measurement.
Given,
Total purchase=$878
For two tables,
2×127=254
Total=878+254
=1132
6% of 1132 is,
(6/100)×1132
=$67.92
The sales tax of his purchase if he lives in Florida where the sales tax rate is 6 percent is $67.92
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Construct the graph of the equation given by solving for the intercepts. Show all of the steps in finding the intercepts and then
plot the intercepts to create the graph. Label the intercepts, as well as the axis on the graph.
2x+3y=6
The slope and the intercepts of the graph are determined.
Given:
the equation is :
2x+3y=6
we first find the slope of the equation:
m = -a/b
m = -2/3
now solve the intercepts:
to find x intercept, substitute in 0 for y and solve for x.
⇒ 2x+3y=6
⇒ 2x+3(0)=6
⇒ 2x+0=6
⇒ 2x=6
⇒ x=6/2
⇒ x=3
hence we get (3,0)
now, to find y intercept, substitute in 0 for x and solve for y.
⇒ 2x+3y=6
⇒ 2(0)+3y=6
⇒ 0+3y=6
⇒ 3y=6
⇒ y=6/3
⇒ y=2
hence we get (0,2) as the intercepts.
Therefore we plot the required graph.
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let 0 < a < b < 1,
a) is a^x < b^x, for x>0
b) is a^x < b^x, for x<0
For 0 < a < b < 1, a^x < b^x, for x < 0.
What are inequalities and their types?
Inequality is a relation that compares two numbers or other mathematical expressions in an unequal way.
The symbol a < b indicates that a is smaller than b.
When a > b is used, it indicates that a is bigger than b.
a is less than or equal to b when a notation like a ≤ b.
a is bigger or equal value of an is indicated by the notation a ≥ b.
Given, 0 < a < b < 1.
Assuming a = 0.25 and b = 0.5.
∴ (0.25)^x < (0.5)^x for x > 0, again assuming x to be 2.
∴ (0.25)^2 = 0.625 and (0.5)^2 = 0.25.
Now, 0.625 > 0.25 which is not satisfying a^x < b^x, for x > 0.
Therefore, if 0 < a < b < 1, then a^x < b^x, for x < 0.
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Triangle FGH has vertices F(-3, 4), G(2, 0), and H(-1, -2). Graph AFGH and its image after a rotation of 180° about (-3, -6).
Answer:
Im gonna assume its counter clockwise (excuse the bad drawing)
Step-by-step explanation:
The vertices of triangle F'G'H' after a rotation of 180° about (-3, -6) are F'(0, 10), G'(5, 6) and H'(2, 4).
What is rotation?Rotations are transformations that turn a shape around a fixed point. To rotate a shape we need: a centre of rotation. an angle of rotation (given in degrees) a direction of rotation – either clockwise or anti-clockwise.
Given that, triangle FGH has vertices F(-3, 4), G(2, 0), and H(-1, -2).
180° clockwise and counterclockwise rotation: (x, y) becomes (-x,-y).
So, (x, y) → (x+3, y+6)
F(-3, 4) → (-3+3, 4+6) → F'(0, 10)
G(2, 0) → (2+3, 0+6) → G'(5, 6)
H(-1, -2) → (-1+3, -2+6) → H'(2, 4)
Therefore, the vertices of triangle F'G'H' after a rotation of 180° about (-3, -6) are F'(0, 10), G'(5, 6) and H'(2, 4).
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A primary school had 1200 students enrolled in 2013 and 1500 students in 2016.if the students population grows as a linear function of time t,where t is the number of years after 2013.how many will be enrolled in the school in 2020?and find the linear function that relates the students population to time t.
Answer:
y=100t+1200, where t is years since 2013 and
Step-by-step explanation:
We only have two points from which to form an equation. Since we are told that it is a linear equation, two points is all we need to find an equation in the form of y=mx+b, where m is the slope (the rate of change) and b is the y-intercept (the value of y when x=0). Let's make the x axis the year and y the student population.
Let's put the data into an x,y format, but before we do, lets be sure to adopt the problem's fervent wish that we treat the x variable, t, as the years since 2013. "t is the number of years after 2013." (0,1200) becomes is the data point for 2013. The school's population will be the y-axis.
(0,1200) [primary school had 1200 students enrolled in 2013], and
(3,1500) [1500 students in 2016]
---
First calculate m, the slope. Slope is the Rise/Run between the two points (the change in y over the change in x)
Going from (2013,1200) to (2016,1500) we find that:
Rise (in y) = (1500 - 1200) = 300 students
Run (on x) = (2016 - 2013) = 3 years
The Rise/Run, or slope, m, is 300/3 or 100: m = 100
Lets put that into our equation format:
y = 100x + b
X will be the time, in years. The problem asks that we define x in terms of years after 2013, and that this be assigned the variable, t:
y = 100t +b, where t is years after 2013.
(The 100 tells us that the student population increases by 100 per year)
We now need b, the y-intercept. One can either graph this and look for the value of y when x=0, of simply input either of the data points. This looks easy enough to input a point and solve for b:
Remember that t is the (year - 2013)
y = 100t +b Solve for (2013,1200)
t = 2013 - 2013 = 0
1200 = 100*(0) + b
b = 1200
Actually, b was easy enough to find without either calculating or graphing, since one of our two points tells us the y-intercept (0,1200).
The equation becomes y = 100t + 1200
See the attached graph.
ABC is and isosceles triangle. ACDE is a parallelogram. Find BCD
angle bcd is 140. see explanation in image
Is (4, 1) a solution to this system of inequalities?
3x + y ≤ 14
3x + 5y < 19
(4, 1) is the solution for the given inequalities
Given,
The system of inequalities;
3x + y ≤ 14
3x + 5y < 19
We have to find that (4, 1) is a solution to the given system of inequalities;
So,
(x, y) = (4, 1)
Then,
Substitute the values of x and y in the equation;
3x + y ≤ 14
3 x 4 + 1 ≤ 14
12 + 1 ≤ 14
13 ≤ 14
Next,
3x + 5y < 19
3 x 4 + 5 x 1 < 19
12 + 5 < 19
17 < 19
Here,
(4, 1) is the solution for the given inequalities
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Write and graph linear equations
The equation of the line is y = -3/4x + 10, the graph of the equation has been plotted
The slope of the line = -3/4
The slope of the line the change in y coordinate with respect to the change in x coordinate of the function
The line is passing through the point (0,10)
The point slope form is
[tex](y-y_1)=m(x-x_1)[/tex]
Substitute the values in the equation
y-10 = -3/4(x-0)
y - 10 = -3/4x
y = -3/4x + 10
The equation of the line in slope intercept form is
y = -3/4x + 10
Plot the graph using the slope intercept form
Hence, the equation of the line is y = -3/4x + 10, the graph of the equation has been plotted
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Given that f(x)=-5x+9/2 and g(x)=1.5x^2-8
The value of g(-2) is -2, f(4) is -15.5, f(1/4) is 3.25, g(2.5) is 1.375, the value of x when f(x) = 2 is 0.5 and the value of x when g(x) = 16 is (plus minus)4.
According to the question,
We have the following expressions:
f(x) = -5x+9/2
Now, we will find the all the values of f(x) by replacing x with the given digits:
f(4) = -5*4+4.5
f(4) = -20+4.5
f(4) = -15.5
The value of f(1/4):
f(1/4) = -5/4+4.5
f(1/4) = -1.25+4.5
f(1/4) = 1.375
The value of x when f(x) = 2:
-5x+4.5 = 2
-5x = 2-4.5
-5x = -2.5
x = 2.5/5
x = 0.5
g(x) = 1.5[tex]x^{2}[/tex]-8
Now, we will find all the values of g(x) by replacing x with the given digits.
The value of g(-2):
g(-2) = 1.5(-2)(-2)-8
g(-2) = 6-8
g(-2) = -2
The value of g(2.5):
g(2.5) = 1.5*2.5*2.5-8
g(2.5) = 9.375-8
g(2.5) = 1.375
The value of x when g(x) = 16:
1.5[tex]x^{2}[/tex]-8 = 16
1.5[tex]x^{2}[/tex] = 16+8
1.5[tex]x^{2}[/tex] = 24
[tex]x^{2}[/tex] = 24/1.5
[tex]x^{2}[/tex] = 16
x = +4 and -4
Hence, the value of g(-2) is -2, f(4) is -15.5, f(1/4) is 3.25, g(2.5) is 1.375, the value of x when f(x) = 2 is 0.5 and the value of x when g(x) = 16 is (plus minus)4.
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The football team played 10 games and won 7 games. What was its winning percentage?
Answer:
70%
Step-by-step explanation:
You use a garden hose to fill a wading pool. If the water level rises 17 centimeters every 7 minutes and you record the data point of (14,y), what is the value of y? Use slope to justify your answer.
The value of y which the slope formula is 34.
What is slope?Slope can be defined as the rate of change of a body.
To calculate the value of y, we use the formula below.
Formula:
ΔL/t = y/x........... Equation 1Where:
ΔL = Rise in the Level of watert = TimeFrom the question,
ΔL = 17 cmt = 7 minutesx = 14Substitute these values into equation 1 and solve for y
17/7 = y/14y = (17×14)/7y = 17×2y = 34Hence, the value of y is 34.
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what is the difference between -3 and 10
Answer:
13
Step-by-step explanation:
-3-10, or 10+3 is equal to 13
Answer:
13
Step-by-step explanation:
-3+13=10
HELP MEEEEE PLEASEEEE
7. If f(x) = -3x² + 2x - 1 and f(x) = -1, solve for x.
The required values are x=0 and x=2/3.
What is the solution to an equation?
In order to make the equation's equality true, the unknown variables must be given values as a solution. In other words, the definition of a solution is a value or set of values (one for each unknown) that, when used as a replacement for the unknowns, transforms the equation into equality.
f(x) = -3x² + 2x - 1
Substitute f(x) = -1
-1 = -3x² + 2x - 1
-3x² + 2x - 1+1=0
-3x² + 2x = 0
x( -3x+2)=0
=> x=0,
-3x+2 = 0
-3x=-2
x=2/3
The required values are x=0 and x=2/3.
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the chief of police in statville wanted to estimate the number of people above the age of 181818 who are using illegal substances in town. he obtained 200200200 random names of statville residents from a computer database and sent his officers to survey these people about substance abuse. once the results came in, he calculated the margin of error and got an estimate of the percentage of residents who use illegal substances. what type of statistical study did the chief of police use?
The chief of police use sample statistical study to estimate the number of people above the age of 18 who are using illegal substances in town.
In the given question,
The chief of police in statville wanted to estimate the number of people above the age of 18 who are using illegal substances in town.
He obtained 200 random names of statville residents from a computer database and sent his officers to survey these people about substance abuse.
Once the results came in, he calculated the margin of error and got an estimate of the percentage of residents who use illegal substances.
We have to explain what type of statistical study the chief of police use.
In the given question chief of police wants to check number of people who using illegal substances in town above the age of 18. So he take 200 random names from a computer database. That means he take the sample of 200 random people.
As we know that a sample is a selection from a larger population of individuals, things, or things that are used for measurement. To enable us to extrapolate the research sample's findings to the entire population, the sample must be representative of the population.
So we can say that the chief of police use sample statistical study to estimate the number of people above the age of 18 who are using illegal substances in town.
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Answer: Sample Study
No because there’s a great risk of obtaining biased answers.
asking help for a friend
Length of the line AB is 1.414 units and midpoint of AB is (3.5,5.5).
Given in the graph,
A(4,6) and B(3,5)
Distance formula = [tex]\sqrt{(x1-x2)^{2} +(y1-y2)^{2} }[/tex]
AB = [tex]\sqrt{(4-3)^{2} +(6-5)^{2} }[/tex]
= [tex]\sqrt{1^{2} +1^{2} }[/tex]
= [tex]\sqrt{2}[/tex]
= 1.414 units
Midpoint = [tex](\frac{x1+x2}{2},\frac{y1+y2}{2})[/tex]
Let midpoint of AB be C(x,y)
C = (x,y) = [tex](\frac{4+3}{2},\frac{6+5}{2})[/tex]
= [tex](\frac{7}{2},\frac{11}{2})[/tex]
= (3.5,5.5)
Hence, length is 1.414 units and midpoint is (3.5,5.5).
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describe a situation that could be represented by f(x) // pls help
Answer: “y is a function of x.” The letter x represents the input value or independent variable. The letter y, or f(x), represents the output value, or dependent variable.
Step-by-step explanation:lol i have no idea
Determine the length of the line segment shown.
line segment from negative 5 comma 5 to 3 comma negative 1
6 units
8 units
10 units
36 units
The length of the line segment from negative 5 comma 5 to 3 comma negative 1 is 10 Units.
How to find the length of a line segment?
A line segment is defined as a line bounded by two points on a line.
The line segment from negative 5 comma 5 to 3 comma negative 1
is found by using the formula
square root of (x2-x1)² +(y2-y1)²
[tex]\sqrt{(3+5)^{2} +(-1-5)^{2} }^[/tex]
[tex]\sqrt{8^{2}+6^{2} }[/tex]
[tex]\sqrt{100}[/tex]
=10 units
therefore the length of the line segment is 10 units
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41.153 to the nearest tenth
Answer:
41.2
Step-by-step explanation:
1 is in the tenths place. Because the number the next number is a five, we must round up and 0.20 is the nearest tenth to 0.153.
Which number should be on the bottom left stamp?
Explain what the answer is and how you got it!
The number that should be on the bottom left stamp is 1. It was gotten by dividing 2 by 2.
What will the number be?From the first picture, we have 82 and the number below it is 4. This was gotten as:
= 8 ÷ 2
= 4
The second picture has 93 and the number below it is 3. This was calculated as:
= 9 ÷ 3
= 3
The third picture has 61 and the number below it is 6. This was calculated as:
= 6 ÷ 1
= 6
The fourth picture will be:
= 2 ÷ 2
= 1
Therefore the value is 1.
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In a pack of Skittles, 20% are red. If 13 are red, how many skittles were in the entire bag?
The total number of skittles in the bag will be 65.
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that In a pack of Skittles, 20% are red. If 13 are red. The total number of skittles will be calculated as,
N = ( 13 / 20 ) x 100
N = 130 / 2
N = 65
Therefore, the total number of skittles in the bag will be 65.
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what is the answer what is the answer what is the step by step answer to learn to do it
The approximate percentage of sales tax is 1%
A gymnastics mat priced at $53.
A cost of mat after adding sales tax = $53.53
So, the tax amount would be,
53.53 - 53 = 0.53
We need to find the sales tax percentage.
Let x be the percentage of sales tax.
x = (0.53)/(53.53) * 100
x = 0.0099 * 100
x = 0.99%
x ≈ 1%
Therefore, the approximate percentage of sales tax is 1%
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in how many ways can 4 different physics books, 3 different mathematics books, and 2 psychology books be arranged on a bookshelf if the physics books must be together and the mathematics books must be together?
Since the physics books must be together and the mathematics books must be together, There are 1728 ways to arrange the books.
What is fundamental counting principle?The basic counting principle is a method for keeping track of all the potential outcomes in a situation. According to this statement, there are n m n times m n ways to carry out both of these actions if there are n ways to perform one action and m ways to perform another action after that. How selection is made based on options is determined by the Fundamental Principle of Counting. The approach of selection, taking into account all of the potential options and their combinations for calculating the probability, is made simpler by the Fundamental Principle of Counting.
Here,
There are 3 book,
3!=6
3 different mathematics books,
3!=6
4 different physics books,
4!=24
2 psychology books
2!=2
by fundamental counting principle,
6*6*24*2=1728
There are 1728 different ways to arrange the books because the mathematics and physics books must be together.
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which equations are true when k = - 50? Select two correct answers.
1.5 - k/5 = 11.5
-2k + 78 = -22
-4k + 80 = -120
6k - 150 = -150
K/10 -3 = -8
30 POINTS IF YOU ANSWER!!
There are two equations which are true. They are 1.5 - k/5 = 11.5 and K/10 -3 = -8.
Given,
The equations;
1.5 - k/5 = 11.5-2k + 78 = -22-4k + 80 = -1206k - 150 = -150K/10 -3 = -8The value of k = -50
We have to solve the given equations using k as -50 and find the true ones;
Lets check;
1.5 - k/5 = 11.51.5 - (-50/5) = 11.5
1.5 - (-10) = 11.5
1.5 + 10 = 11.5
11.5 = 11.5
This equation is true.
-2k + 78 = -22(-2 x -50) + 78 = -22
100 + 78 = -22
178 ≠ -22
This equation is false
-4k + 80 = -120(-4 x -50) + 80 = -120
200 + 80 = -120
280 ≠ -120
This equation is false
6k - 150 = -150(6 x -50) - 150 = -150
-300 - 150 = -150
-450 ≠ -150
This equation is false
k/10 -3 = -8(-50/10) - 3 = -8
-5 - 3 = -8
-8 = -8
This equation is true.
That is,
There are two equations which are true. They are 1.5 - k/5 = 11.5 and K/10 -3 = -8.
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Feng invests money in an account paying simple interest. He invests $70 and no money is added or removed from the investment. After one year, he has $70.70. What is the simple percent interest per year?
The simple interest is given as PRT/100, thus the simple percent interest per year is 1%.
What is simple interest?Simple interest is a way to figure out how much interest will be charged on a sum of money at a specific rate and for a specific duration of time.
Unlike compound interest, which adds the interest from the principal of prior years to determine the interest of the following year.
As per the given,
Investment = $70
Investment after one year is $70.70
Interset = 70.70 - 70 = $0.70
The interest is given as = PRT/100
0.70 = PR(1)/100
R = (0.70×100)/70
R = 1%
Hence, "The simple interest is given as PRT/100, thus the simple percent interest per year is 1%".
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A, B , C or D ???????? help
Answer:
The Answer is B
Step-by-step explanation:
Since 1.8 times 10 is bigger than 18% meaning its the only one that would be in correct descending order.
Answer:
Pretty sure it’s A
Step-by-step explanation:
18% is 18/100 which is then .18
1/8 is .125
1.8x10 is 18
And .188 is just .188