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3 years ago

Whats the answer to (2w - 9) + (-4w -5)

2 answers:

7 0

(2w - 9) + (-4w - 5)

Get rid of the parenthesis.

2w - 9 - 4w - 5

Combine like terms.

(2w - 4w) + (-9 - 5)

Simplify.

(-2w) + (-14)

Get rid of the parenthesis.

-2w - 14

~Hope I helped!~

Lubov Fominskaja [6]3 years ago

6 0

The final answer would be −2w−14

2w+−9+−4w+−5

Combine Like Terms:
2w+−9+−4w+−5

(2w+−4w)+(−9+−5)

2w+−14


Your final answer:−2w−14

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3 years ago

Solve the system of equations -x+ 2y = –11 and 5x – 8y = 39 by combining the equations.

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Answer:

x=-5, y=-8. (-5, -8).

Step-by-step explanation:

-x+2y=-11

5x-8y=39

---------------

5(-x+2y)=5(-11)

5x-8y=39

---------------------

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3 0

2 years ago

Loretta’s income last year was $81,300. She made $56,800 at her salaried job and had additional passive income. If Loretta earne

aalyn [17]

Answer:

Option a. $2,040

Step-by-step explanation:

step 1

To find out the amount of the additional passive income last year, subtract the amount earned at her salaried job from Loretta’s income last year

$\$81,300-\$56,800=\$24,500$

step 2

Divide the additional passive income last year by 12 (number of months in a year)

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5 0

3 years ago

Read 2 more answers

Please help me with this

horrorfan [7]

Answer:

$\dfrac{4000\pi}{3}$ ft³

Step-by-step explanation:

First, let's figure out how to get the volume of a sphere from its surface area. If r is the radius of our sphere, then

The formula for a sphere's surface area is $A = 4\pi r^2$

The formula for a sphere's volume is $V=\frac{4}{3}\pi r^3$

So to get from area to volume, we have to divide the area by 3 and then multiply it by r. Mathematically:

$V=\frac{A}{3}r$

Before we solve for V though, we need to find the radius of our sphere. Thankfully, we're given the surface area - $400\pi$ ft² - so we can use the area formula to find that radius:

$A=4\pi r^2=400\pi\\r^2=100\\r=10$

And now that we have our radius, we can put it into our volume formula to find

$V=\frac{A}{3} r=\frac{400\pi}{3}(10)=\frac{4000\pi}{3}$ ft³

4 0

3 years ago