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Semmy [17]
3 years ago
8

Please help answer this question I’m just stupid

Mathematics
2 answers:
kykrilka [37]3 years ago
8 0
1500
600 per hour

It starts at 1500 and then after one hour
It go up to 2,100 then 2700
vodomira [7]3 years ago
7 0

Answer:

1500

600 per hour

It starts at 1500 and then after one hour

It go up to 2,100 then 2700

credited to Hasbrouckkristina

Step-by-step explanation:

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Which equation is equivalent to √x^2+81 = x+10
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Keywords:

<em>equation, operations, equivalent, binomial, square root </em>

For this case we have an equation in which we must apply operations to rewrite it in an equivalent way. We must start by raising both sides of the equation to the square. Thus, we eliminate the square root of the left side of equality and finally solve the binomial of the right side of equality.

So we have:

\sqrt {x ^ 2 + 81} = x + 10\\(\sqrt {x ^ 2 + 81}) ^ 2 = (x + 10) ^ 2\\x ^ 2 + 81 = (x + 10) ^ 2

By definition:(a + b) ^ 2 = a ^ 2 + 2ab + b ^ 2

x ^ 2 + 81 = x ^ 2 + 2 (x) (10) + (10) ^ 2\\x ^ 2 + 81 = x ^ 2 + 20x +100

Thus, x ^ 2 + 81 = x ^ 2 + 20x +100 is equivalent to \sqrt {x ^ 2 + 81} = x + 10

Answer:

x ^ 2 + 81 = x ^ 2 + 20x +100

Option D

4 0
3 years ago
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VladimirAG [237]
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One side of a regular pentagon measures 0.8 meters. What is the perimeter of the regular pentagon
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Answer:

Step-by-step explanation:

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Ratio of

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