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vladimir1956 [14]
2 years ago
11

I NEED HELP ASAP

Mathematics
1 answer:
Artyom0805 [142]2 years ago
4 0

Answer:

72

Step-by-step explanation:

9 x 8 = (10 x 8) - (1 x 8)

         = 80 - 8

         = 72

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If y=1/2 when x=2, find y when x=3, given that y varies directly with x
Lelu [443]
\bf \qquad \qquad \textit{direct proportional variation}\\\\
\textit{\underline{y} varies directly with \underline{x}}\qquad \qquad  y=kx\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad  variation
\end{array}\\\\
-------------------------------\\\\
\textit{we also know that }
\begin{cases}
y=\frac{1}{2}\\
x=2
\end{cases}\implies \cfrac{1}{2}=k2\implies \cfrac{1}{4}=k
\\\\\\
\boxed{y=\cfrac{1}{4}x}
\\\\\\
\textit{when x=3, what is \underline{y}?}\qquad y=\cfrac{1}{4}\cdot 3
4 0
3 years ago
What is the volume of a rectangular prism with a 4 inch base and a height of 4?
timofeeve [1]
V=lwh
V= (4)(4)(4)
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8 0
3 years ago
You will get 10 points! thanks
Marianna [84]

Answer: y=-1/6x+2

Step-by-step explanation: The point goes through (0,2), aka, the b point in y=mx+b (The slope intercept form). Then because it’s proceeding downwards, we know that the slope is negative. So down one, over 6. This make its -1/6.

7 0
2 years ago
Find the cube of a+3​
Sedbober [7]

Answer:

(a+3)^3

a^3 + b^3 + 3ab [identity : (a+b)^3 )]

a^3+ 3^3 + 3×a×3

a^3 +27+9a

answer : a^3+27+9a

hope it helps you

mrk me braniliest plz

6 0
3 years ago
Read 2 more answers
This needs to be answered right now
Vikki [24]

Answer:

A=πr2 is the formula of pi so

it would be A=3.14*100

or 3.14*10^2

3.142 is not pi

and 20 is not 10^2

Step-by-step explanation:

4 0
3 years ago
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