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sveticcg [70]
3 years ago
15

A square has an area of 81 inches. If the side lengths of the square are each multiplied by 5, find the area of the new square.

Mathematics
2 answers:
Ahat [919]3 years ago
4 0

Answer:

2025

Step-by-step explanation:

morpeh [17]3 years ago
3 0
2,025 this is because the side lengths are both 9 to begin with since 9x9 is 81. If the side lengths are multiplied by 5 then 9x5 is 45. This changes the problem to 45x45. The product is then 2,025. I hope this helped!
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Step-by-step explanation:

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2 years ago
What must be added to both sides in 4x² + 24x + 8 = 32 in order to complete the square?
Sergeu [11.5K]

Answer:

16

Step-by-step explanation:

To solve a quadratic equation by using the completing the square method, the coefficient of the square term i.e x² must be one (1).

Therefore, we would have to first make the coefficient of x² to be equal to 1.

4x² + 24x + 8 = 32

We would simplify the equation;

4x² + 24x = 32 - 8

4x² + 24x = 24

Divide all through by 4;

x² + 8x = 24

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Taking the square root of both sides;

x + 4 = ± 4.9

x = -4 ± 4.9

x = -4 + 4.9 = 0.9

or

x = -4 - 4.9 = - 8.9

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6 0
3 years ago
Robert run the 100 meter dash in 13.5. later he run same distance in 10.3 seconds. how many seconds less did it take him to run
leonid [27]

Answer:

3.2seconds

Step-by-step explanation:

Step one:

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The largest value corresponds to a global maximum, and the smallest value corresponds to a global minimum:The open endpoints of the domain are marked in grayy | f(y) | extrema type-∞ | -∞ | global min0 | 0 | global max∞ | -∞ | global min
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Answer:

Step-by-step explanation:

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