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3 years ago

Solve for x. x2 = 64

Mathematics

2 answers:

Fed [463]3 years ago

5 0

Answer:

32 × 2 = 64

Step-by-step explanation:

x is being multiplied by 2 so it would be half of 64.

Marat540 [252]3 years ago

3 0

Answer:

x = ± 8

Step-by-step explanation:

Given

x² = 64 ( take the square root of both sides )

x = ± $\sqrt{64}$ = ± 8 ← note plus or minus

[ since 8² = 64 and (- 8)² = 64 ]

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Step-by-step explanation:

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4 years ago

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Answer:

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3 years ago

PLEASE HELP QUICK!! WILL OFFER 100 POINTS TO THE FIRST ONE THAT ANSWERS

Reil [10]

Given

$x+1 = \sqrt{7x+15}$

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Similarly, we have

$x-3 = \sqrt{x-1}+4 \iff x-7=\sqrt{x-1}$

So, we have to impose

$x-7\geq 0 \iff x \geq 7$

Squaring both sides, we have

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3 years ago

C. If a < 0 and f(a) > 0, then the point (a, f(a))

professor190 [17]

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Explanation:

Any number less than zero is a negative number.

Example: -1

Any number greater than zero is a positive number.

Example: 1

(a, f(a))

(-1,1)

When these example points are graphed, they are placed in the second quadrant.

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2 years ago