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zlopas [31]
2 years ago
9

I need this, please. I am willing to give brainly

Mathematics
1 answer:
IgorLugansk [536]2 years ago
4 0

Answer:

x=28

Step-by-step explanation:

180= 38 + (4x+30)

142= (4x+30)

112=4x

x=28

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F(b) = 7b^3 +8b and g(b) = b ^2+ b - 10. What is f(b)-g(b)?
Elden [556K]

Answer:

{ \bf{f(b) - g(b) : }} \\ { \tt{ = ( {7b}^{3} + 8b) - ( {b}^{2}   + b - 10)}} \\  = ( {7b}^{3}  -  {b}^{2}  + 7b + 10)

7 0
3 years ago
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It takes 40 minutes for 8 people to paint 4 walls. How many minutes does it take 10 people to paint 7 walls?
77julia77 [94]
Let's first break it down to the time 8 people need for one wall. That would be 10 minutes, right? If one person would have to do it in stead of 8, you'd expect him to take 80 minutes.

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3 0
3 years ago
What is 55% of 38<br> A) 20.4<br> B)1767<br> C)2090<br> D)20.9<br> E) none of these
andrew-mc [135]

Answer:

e

Step-by-step explanation:

yes

4 0
3 years ago
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D · 24 = -12<br> What does d equal?
Darya [45]

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<u>Move all terms to the left</u>

<u></u>d*24-(-12)=0<u></u>

<u></u>

<u>Add all the numbers together, and all the variables</u>

<u></u>d*24+12=0<u></u>

<u></u>

<u>Multiply elements</u>

<u></u>24d+12=0<u></u>

<u></u>

<u>Move all terms containing d to the left, all other terms to the right</u>

<u></u>24d=-12\\-12/24\\d=-1/2<u></u>

4 0
3 years ago
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Subtract and simplify: 4y/y^2-10y+21-1/y-3
Eva8 [605]
OK...... your answer would be

- 10y^2 - 26y + 1/y
H0P3 It H3LPS :)
3 0
3 years ago
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