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3 years ago

6

What is the slope of line a

2 answers:

Crazy boy [7]3 years ago

5 0

The answer is 1/3. M=1/3

Cerrena [4.2K]3 years ago

4 0

Answer:

-1/3

Step-by-step explanation:

It is -1/3 because your going down and its like going underground and the grass is the 0-line then anything lower is a -x number if you were going up the "slope" then it would be a positive number.

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Jack is using a ladder to hang lights up in his house.he places the ladder 5 feet from the base of his house and leans it so it

Yakvenalex [24]

You did not complete your question but I think this is what you are looking for. View the image.

5 0

3 years ago

. Number of whole numbers between 42 and 65 is _________.

galben [10]

Step-by-step explanation:

: The number of whole numbers lying between 42 and 65 is 22 (65 – 42 – 1 = 22). They are as follows 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, and 64.

5 0

3 years ago

Solve the volume of the box! Help ASAP also you get extra points <3.

olga2289 [7]

Answer:

22½ in³ or 22.5 in³

Step-by-step explanation:

V=bwh

V=5(3)(1.5)

V=15(1.5)

V=22.5

8 0

2 years ago

A rectangle is 25 feet long.Its area is 375 square feet. What is the width of the rectangle?

frosja888 [35]

To find the width, divide the area by the length.

Width = 375 / 25

Width = 15 feet.

6 0

3 years ago

Read 2 more answers

2. Carl needs 15 hours longer than Jennifer to paint a room. If they work together, they can complete the job in 4 hours. Explai

nasty-shy [4]

Answer:

Jennifer would complete the job on her own in 5 hours.

Step-by-step explanation:

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

$ax^{2} + bx + c, a\neq0$ .

This polynomial has roots $x_{1}, x_{2}$ such that $ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})$ , given by the following formulas:

$x_{1} = \frac{-b + \sqrt{\Delta}}{2*a}$

$x_{2} = \frac{-b - \sqrt{\Delta}}{2*a}$

$\Delta = b^{2} - 4ac$

Rates

The together rate is the sum of their separates rate.

We have that:

Jennifer takes x hours to complete the job on her own, so her rate is 1/x.

Carl needs 15 hours longer than Jennifer, that is, 15 + x hours, so his rate is 1/(15+x).

The together rate is 1/4. So

$\frac{1}{4} = \frac{1}{x} + \frac{1}{15+x}$

$\frac{1}{4} = \frac{15 + x + x}{x(15+x)}$

$\frac{1}{4} = \frac{15 + 2x}{x(15+x)}$

Applying cross multiplication.

$x^2 + 15x = 4(15 + 2x)$

$x^2 + 15x = 60 + 8x$

$x^2 + 7x - 60 = 0$

Quadratic equation with $a = 1, b = 7, c = -60$ . So

$\Delta = 7^{2} - 4*1*60 = 289$

$x_{1} = \frac{-7 + \sqrt{289}}{2} = 5$

$x_{2} = \frac{-7 - \sqrt{289}}{2} = -12$

Since the time to complete the job has to be a positive value.

Jennifer would complete the job on her own in 5 hours.

4 0

2 years ago