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3 years ago

I don’t understand how you would figure out the number of hours. Please help!

Mathematics

1 answer:

photoshop1234 [79]3 years ago

8 0

13.50 x 40 = 540

661.50 - 540 = 121.50

121.50 ÷ 20.25 = 6

40 hours + 6 hours = 46 total hours

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3. Here is a list of exam scores for Mr. Kraft's calculus class:

Alja [10]

Answer

15%

Step-by-step explanation:

I think the answer is 15% because when we talk about percentile, we are actually subtracting from 100% in simpler terms. If we say a 85th percentile, it actually means 15%.

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3 years ago

Which equation represents a proportional relationship? A. y = x + 1 3 y=x+13 B. y = 1 − 1 3 x y=1-13x C. y = 3 x + 1 3 y=3x+13 D

34kurt

Answer:

Option D. $y=\frac{1}{3}x$

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $y/x=k$ or $y=kx$

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

Verify each case

case A) we have

$y=x+\frac{1}{3}$

Remember that

the line must pass through the origin

For x=0, y=0

In this case

For x=0

$y=0+\frac{1}{3}=\frac{1}{3}$

The line not passes through the origin

therefore

The equation A not represent a proportional relationship

case B) we have

$y=1-\frac{1}{3}x$

Remember that

the line must pass through the origin

For x=0, y=0

In this case

For x=0

$y=1-\frac{1}{3}(0)=1$

The line not passes through the origin

therefore

The equation B not represent a proportional relationship

case C) we have

$y=3x+\frac{1}{3}$

Remember that

the line must pass through the origin

For x=0, y=0

In this case

For x=0

$y=3(0)+\frac{1}{3}=\frac{1}{3}$

The line not passes through the origin

therefore

The equation C not represent a proportional relationship

case D) we have

$y=\frac{1}{3}x$

Remember that

the line must pass through the origin

For x=0, y=0

In this case

For x=0

$y=\frac{1}{3}(0)=0$

The line passes through the origin

therefore

The equation D represent a proportional relationship

3 0

3 years ago

What is the solution of the system of equations ? 2x-y=7 y=2x+3

LuckyWell [14K]

2x-y = 7 so y = 2x - 7
y = 2x+3

2x - 7 = 2x + 3
0 = 10

Answer
No solution

4 0

3 years ago

It is solving multi-step inequalities.

kati45 [8]

If you took a better picture I would be able to solve it. Sorry it is pretty blury

3 0

3 years ago

Read 2 more answers

C(n) = -6(-1/3)^n-1 Which is the 2 or term of the succession?

hichkok12 [17]

Answer:

the first term will be n=1 and the second term is n=2

Step-by-step explanation:

Hope this is Helpful! :)

Have a nice day!

5 0

3 years ago