Answer:
bA = x^2+4x
Step-by-step explanation:
base area = length x width
bA = lw
bA = x(4+x)
bA = 4x+x^2
C.) 2 is the right answer
Step-by-step explanation:
Given
-15(x-__)=25
We can see in the next step
![-15x+30=25](https://tex.z-dn.net/?f=-15x%2B30%3D25)
We can check by substituting each option one by one
So,
A.) -30
![-15(x-(-30))=25\\-15(x+30)=25\\-15x-150=25](https://tex.z-dn.net/?f=-15%28x-%28-30%29%29%3D25%5C%5C-15%28x%2B30%29%3D25%5C%5C-15x-150%3D25)
We can see that by putting -30 we don't get the expression given in the picture so it is not the right answer.
B.) -2
![-15(x-(-2))=25\\-15(x+2)=25\\-15x-30=25](https://tex.z-dn.net/?f=-15%28x-%28-2%29%29%3D25%5C%5C-15%28x%2B2%29%3D25%5C%5C-15x-30%3D25)
We can see that by putting -2 we don't get the expression given in the picture so it is not the right answer.
C.) 2
![-15(x-2)=25\\-15x+30=25](https://tex.z-dn.net/?f=-15%28x-2%29%3D25%5C%5C-15x%2B30%3D25)
We get the same expression by putting 2 in the blank so it is the right answer.
Hence,
C.) 2 is the right answer
Keywords: Expressions, Variables
Learn more about expressions at:
#learnwithBrainly
<span>100 ÷ 5 × 4 + 43 = 48 is the answer.
First multiply then divide and finally add.
100 / 20 + 43
5 + 43 = 48</span>
Step-by-step explanation:
its 3n+7
Well I suppose it depends on how long you have in a day but...
with 30 people you can have it done in about 8hrs
but with 20 people you can have it done in about 12 hours
so my best guess would be anywhere between 20-30 people