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3 years ago

Find the slope between the two points (-5,5) and (3,-5)

1 answer:

5 0

The formula is y2 minus y1 over x2 minus x1 or rise (y) over run (x). So you would do (-5) - (5) over (3) - (-5). that would equal -10 over 8, or -5/4 when you simplify. your slope would be -5/4

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alisha [4.7K]

Answer:

If it's not too late by now, the answer is 19.9 $mm^{2}$

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2 years ago

2+2Divided by 10,000×4000-10<br> Divided by 10,000×4000-10

marshall27 [118]

Answer:

-11.2

Step-by-step explanation:

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3 years ago

Another stack of books is 43 inches tall. Each book is 1/2 inch thick. Write an expression that represents the number of books i

enyata [817]

Answer:

86 books

Step-by-step explanation:

A stack of books is 43 inches tall.

Each book is $\frac{1}{2}$ inch thick.

To find the number of books in tha stack, divide the height of the stack by the height of the book:

$43:\dfrac{1}{2}$

The division by the fraction $\frac{1}{2}$ is equivalent to the multiplication by the fraction $\frac{2}{1},$ so

$43:\dfrac{1}{2}=43\cdot \dfrac{2}{1}=43\cdot 2=86$

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3 years ago

4.5, 3.25, 3.75, 3.25, 4.25, 3.5, 3.75, 4.25, 4.5, 2.5 <br><br> Whats the mean?

Alchen [17]

$\frac{4.5 + 3.25 + 3.75 + 3.25 + 4.25 + 3.50 + 3.75 + 4.25 + 4.50 + 2.50}{10} = 3.75$
So; the answer is: 3.75

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3 years ago

The length of a rectangular driveway is five feet more than three times the width. The area is 350ft2. Find the width and length

crimeas [40]

Answer:

width -- 10 ft
length -- 35 ft

Step-by-step explanation:

We can let x represent the width. Then the length will be represented by (3x+5), a value 5 more than 3 times the width.

The area is the product of length and width, so is ...

A = (3x +5)(x) = 3x^2 +5x

To make the area 350, we can find the value of x from ...

3x^2 +5x = 350

This can be solved a number of ways. One of them is "completing the square".

3(x^2 +5/3x) = 350

We choose to divide by 3 and add the square of half the x-coefficient.

x^2 +5/3x +(5/6)^2 = (350/3) + (5/6)^2

(x +5/6)^2 = 4225/36 . . . . simplify

x +5/6 = ±√(4225/36) = ±10 5/6 . . . . take the square root

x = 10 or -11 2/3 . . . . subtract 5/6

The positive solution is the one of interest: x = 10.

The driveway is 10 ft wide and 35 ft long.

4 0

3 years ago