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Alex
2 years ago
8

Evaluate the expression w 2 - v + 1 for w = -2 and v = -8.

Mathematics
1 answer:
Aleksandr [31]2 years ago
4 0

Answer:

Is the w2, w(2) or

{w}^{2}

?

If it's w(2) the answer is -4--8+1=-4+8+1=5

if it's w^2 then the answer would be 4--8+1=4+8+1=13

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The answer is 14 because 3 1/2 multiplied by 4 is 14. Hope this helps
7 0
3 years ago
Simplify 9/20 × 4/5
Cerrena [4.2K]
<span>Answer:  18/25 ; or, write as:  0.72  .
_____________________________________
Explanation:
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9/20  * 4/5  = (</span>9*4) / (10*5) = 36/50 ; 
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36/50 = </span>(36÷2) / (50÷2) = 18/25 ; or, write as:  0.72  .
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3 years ago
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Citrus2011 [14]
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3 years ago
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Answer:

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4 0
3 years ago
Read 2 more answers
The longer leg of a right triangle is 3 inches more than the length of the shorter leg tripled. the hypotenuse is 3 inches less
lukranit [14]
We have this equation.
A²+B²=C²
We have bits of information that'll help us simplify the equation so there's only one variable.
The longer leg, A, is 3 inches more than the length of the shorter leg, B, tripled.
A=3B+3
Let's plug that in.
(3b+3)²+B²=C²
The hypotenuse, C, is 3 inches less than four times the length of the shorter leg. C=4B-3
Let's plug that in.
(3b+3)²+B²=(4B-3)²
Let's solve.
9B²+18B+9+B²=16B²-24B+9
10B²+18B+9=16b²-24b+9
Let's subtract 9 from both sides.
10b²+18b=16b²-24b
Let's subtract 10b² from both sides.
18b=6b²-24b
Let's add 24b from both sides.
42b=6b²
Let's divide each side by 6.
7b=b²
With this, you can tell that b is 7 since it times 7 equal itself squared.
The shorter leg is 7 inches.
Now, let's look back at the bits of information.
The longer leg of a right triangle is 3 inches more than the length of the shorter side tripled.
3(7)+3=24
So, the longer side is 24. We can either use the other information or plug it into the equation. We can do both. 
The hypotenuse is 3 less than four times the shorter leg.
4(7)-3=25
7²+24²=
49+576=625
√625=25
So, the length of the hypotenuse is 25 inches.
4 0
3 years ago
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