Answer:
y-intercept = -8
Step-by-step explanation:
The y-intercept is where the line goes through the y axis. It is also the value when x = 0. From what the problem gives us, we know the y-intercept is -8 because the x value is 0
My tutor was no help !!! Help me please!!!!
Consider the equation y = 1.5x + 2. Find four pairs of x and y values that make
the equation true. Plot the points (x, y) on the coordinate plane.
Based on the graph, can this be a proportional relationship? Why or why not?
Answer:
1. (2,5),(1,3.5),(4,8),(6,11)
2. This is not a proportional relationship (explanation below)
Step-by-step explanation:
For the plotting, if you take some random x values and multiply by 1.5 and add 2 to them.
This can't be a proportional relationship. A proportional relationship means the x and y values' ratios have to stay the same. However, because 2 is added to 1.5x, the equation is not proportional.
The four x and y values that make the equation true are (0,2), (-1.333,0), (1,3.5), and (1,3.5).
What in mathematics is a proportionate relationship?When the ratios of two variables are equal, they form proportional relationships. Another way to think about them is that in a proportionate relationship, one variable is always equal to the constant value of the other.This constant is known as the "constant of proportionality." To find: The four sets of x and y values required to solve the equation. Put the (x, y) coordinates on a coordinate plane.Therefore,
We select several x and y values,
1) Take x=0,
y = 1.5(0) + 2 =2.
The point is (0,2).
2) Take y=0,
0 = 1.5x + 2
x = -2/1.5 = -1.333
The point is (-1.333,0).
3) Take x=1,
y = 1.5(1) + 2 = 3.5
The point is (1,3.5).
4) Take y=1,
1 = 1.5x +2
1.5x = -1
x = -1/1.5 = -0.666.
The point is (-0.666,1).
The four sets of x and y numbers that make the equation true are (0,2), (-1.333,0), (1,3.5), and (0,2).
To learn more about proportional relationship, refer to:
brainly.com/question/21302696
#SPJ2
Sanjay consulted three electricians about upgrading the wiring in his home. Each electrician uses a linear formula that incorporates a flat base fee and an hourly rate to determine the cost of service. Those formulas are shown in the table.
Repair Cost Formulas
Electrician
Cost in y dollars for an x-hour service
1
y = 25 x + 30
2
y = 30 x + 25
3
y = 25 x + 20
Which statement is best supported by the table?
Each electrician charges a different hourly rate.
Each electrician charges a different base fee.
All three electricians charge the same hourly rate.
All three electricians charge the same base fee.
Answer: B: each electrician charges a different base fee
Step-by-step explanation:
Answer:
b.Each electrician charges a different base fee:
Explanation:
Each of the equations has two parts:
1- base fee that is independent of any variable (this would be the number that has no variable next to it)
2- an hourly rate depending on the number of hours x (this would be the number that has an x next to it)
For the first electrician:
y = 25x + 30
base fee = $30
hourly rate = $25
For the second electrician:
y = 30x + 25
base fee = $25
hourly rate = $30
For the third electrician:
y = 25x + 20
base fee = $20
hourly rate = $25
Now, let's check the choices:
a.Each electrician charges a different hourly rate:
This is incorrect as electricians 1 and 3 charge the same hourly rate ($25)
b.Each electrician charges a different base fee:
This is correct as all three base fees are different ($30, $20 and $25)
c.All three electricians charge the same hourly rate:
This is incorrect as electrician 2 has a different hourly rate
d. All three electricians charge the same base fee:
This is incorrect as the base fees for the three electricians are different ($30, $25 and $20)
What number is 38% of 60
Answer:
63.333333333333 you could put 63.3
Step-by-step explanation:
How much is 38 out of 60 written as a percent value? Convert fraction (ratio) 38 / 60 Answer: 63.333333333333%
Answer:
38% of 60 is 22.8. that's the correct answer
Brainliest please get right
Answer:
12x-9Step-by-step explanation:
hope this helpssss
Answer:
12x + -9 or 12x-9
Step-by-step explanation:
9x-4+3x-5
Combine the like terms.
9x + 3x = 12x
-4 - 5 = -9
12x-9
3. During one day in a hardware store, 37 people came in and made a purchase, and 13 people
looked around but didn't purchase anything. Express the following in ratios:
a. Purchasers to nonpurchasers
b. Nonpurchasers to purchasers
c. Purchasers to total customers
d. Nonpurchasers to total customers
Answer:
i think the answer is A
Step-by-step explanation:
Raymond bought a box of candy bars for $5.25 and sells the candy for $0.75 each. Paul bought a box of candy bars for $8.75 and then sells the candy for $1.25 each. How many candy bars does each have to sell to have the same profit? Write an equation to match this scenario and then determine the solution.
Answer:
Step-by-step explanation:
How many solutions does this equation have?
4 − 6r = –9r + 4
Answer: none
Step-by-step explanation:
ASAP!! If quadrilateral PQRS is a square, what are the coordinates of point E?
Answer:
E - (28, 25)
Hope this helps!
Find the missing side I’m almost done
Answer:
the answer is a
Step-by-step explanation:
Answer:
The answer is A...
Is right
HELP PLS! WILL REWARD BRAINLIEST, TYSM !
Answer:
b and d
Step-by-step explanation:
they both have b
Answer:
-0.9b can be combined as well a b/12 and -2b
What does the pattern in the residual plot indicate about the type of model?
a. The pattern is random, indicating a good fit for a nonlinear model.
b. The pattern shows the points are far from the zero line, indication a good fit for a linear model.
c. The pattern shows the points are far from the zero line, indicating a good fit for a nonlinear model.
d. The pattern is not random, indicating a good fit for a nonlinear model.
e. The pattern is random, indicating that the model is unable to be determined.
Answer: c. The pattern shows the points are far from the zero line, indicating a good fit for a nonlinear model.
d. The pattern is not random, indicating a good fit for a nonlinear model.
Step-by-step explanation:
A residual plot is a graph that represents
residuals on the vertical axis independent variable on the horizontal axis.Two main kids of plot are there.
First plot gives a random pattern, indicates a good fit for a linear model.
Other plots are non- random, indicates a good fit for a non- linear model.
Two points are correct for any residual plots :
c. The pattern shows the points are far from the zero line( basically u-shaped), indicating a good fit for a nonlinear model.
d. The pattern is not random, indicating a good fit for a nonlinear model.
What role does Geometric formulas have in our lives??
Can someone help me??
Jose owes his brother $50. He promises to pay his brother back $5 each week until his debt is paid off. Represent the relationship between the debt, D, and the number of weeks, n, in a table, graph, verbal description, and algebraic expression.
Answer:
it will take 10 weeks for him to pay his brother completly
Step-by-step explanation:
#4 PLS HELP I WILL MARK BRAINLIEST IF ITS CORRECT
Answer: the answer would be c
Step-by-step explanation:
Which correctly applies the distributive property to show an equivalent expression to (–2.1)(3.4)? (2)(3) – (0.1)(0.4) (–2)(3) + (–0.1)(0.4) (2.1)(3) – (2.1)(0.4) (–2.1)(3) + (–2.1)(0.4)
Answer:
d i hope
Step-by-step explanation:
good
Answer:
I think it is c
Step-by-step explanation:
hope this helps
Ricardo can type 39 words per minute. Estimate the number of words he can type in 18 minutes. 400 or 600 or 300 or 800
Answer:
800
Step-by-step explanation:
ROund 39 to 40 and 18 to 20.
This results in 40 x 20=800.
The point (5, -6) is reflected over the x-axis. What are the new coordinates of the reflection?
Answer:
(5,6)
Step-by-step explanation:
since it is reflected over x axis, y value will flip sign
The diagram below represents which percent?
An area model with 4 shaded sections and 1 unshaded section.
4%
45%
75%
80%
Answer:
80%
Step-by-step explanation:
There are 4 shaded sections and 1 unshaded section, so five sections in total.
4 sections are shaded, so the fraction would be 4/5.
Dividing 4/5 gets you 0.8, move the decimal point two places over to get the percent (80%).
Answer:
D. 80%
Step-by-step explanation:
Well, the diagram shows 4/5ths knowing this is more than half we can auto matily mark out the first two A. and B. leaving C. 75% and D. 80% and D. is the best choice (sorry go too lazy to explain...)
what is 0.0042 as a fraction in simplest form
Answer:
21/5000
Step-by-step explanation:
0.0042 takes the form of 21/5000 as a fraction.
Answer:
21/500
Step-by-step explanation:
0.0042 = 42/1000, (There is 4 digits to the right of the decimal point)
42 is an even number so, divide by 2 to simplify.
42/2 = 21 and 1000/2 = 500
21/500 is your final answer because 21 is divisible by 7 and 3 but 500 cannot be divided by either of those to get a whole number.
Hope this helps! :)
(Brainlyest would be appreciated ;)
A line with a positive slope is parallel to one of the lines shown. What is its slope? Use the graph shown below.
The slope is 0.75 as 3/4 = 0.75
Answer:
Step-by-step explanation:
Only the blue line has a positive slope. So the new line is parallel to the blue line.
Clearly, the blue line goes through the point (0, 3) (this is the y-intercept). Follow this blue line upward and to the right until it intersects the horizontal line at the top of the diagram. We must estimate the x-value of this point of intersection. A good approximation would be 5 1/3.
Now estimate the slope of the blue line. Starting at (0, 3), we move 5 1/3 units to the right (this is the "change in x," or "run") We end up at (5 1/3, 3).
Now, from the horizontal line y = 3 upward to the horizontal line at the very top of the graph, is 5 units. This is the "rise."
Thus, the approximate value of the slope here is
5 5 15
m = rise / run = ---------- = -------------- = ----------- = m
5 1/3 16/3 16
THERE IT IS.
THANK YOU SO MUCH FOR HELPING ME
the percent of decrease from 12 to 9.
Answer:
75%
Step-by-step explanation:
Please Dont Skip Over My Question, Please Help Me. ;(
Let f(x) = –7x + 9. Suppose you add 2 to the input of f to create a new function g, then multiply the output of function g by –3 to create function h. What are the slope and y-intercept of the graph of function h?
slope =
y-intercept =
Answer: slope = 21, y-int = 15
Step-by-step explanation:
f(x) = -7x + 9
g(x) = -7(x + 2) + 9 = -7x - 5
h(x) = -3(-7x - 5) = 21x + 15
slope = 21
y-intercept = 15
hope this helps (not sure if my answer is correct)
simplify 5^-4/5^3 (please heeeelp)
Answer: 1/5^7 or 1/78125 <= another way
Step-by-step explanation:
5^−4/5^3
=5^−4/5^3
=5^−4−3
=5^−7
=1/5^7
=1/78125
What is the missing area of the square?
Answer:
27 m2
Step-by-step explanation:
what is the fraction for 0.457(repeating)
Answer:
457/999
Step-by-step explanation:
Answer:
457/999
Step-by-step explanation:
i got it right :)!
solve for x:
x/6-6<8
????????
Answer:
Your answer is: x < 84
Step-by-step explanation:
Hope this helped : )
Answer:
x<84
Step-by-step explanation:
In this problem, we can't find a specific value of x. In this case, we will find a range of value suitable for x.
[tex]\frac{x}{6} -6 < 8[/tex]
Add 6 to both sides
[tex]\frac{x}{6} <14[/tex]
Multiply 6 to both sides
x<84
Hope this helps! :D
What is 2 ÷ 1/6?
A. 1/12
B. 2
C. 6
D. 12
Answer: 12 (D)
Step-by-step explanation:
Hey there! If you have any questions, feel free to them in the comments below.
Step 1: Use this rule [tex]a / \frac{b}{c} = a * \frac{c}{b}.[/tex]
2 * 6
Step 2: Simplify.
12
~I hope this helped you! :)~
Answer:
Step-by-step explanation:
here you go mate
step 1
2 ÷ 1/6 equation
step 2
(2)(6) multiply the two numbers
answer
12