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3 years ago

What is the solution to the inequality x^2 >64

Mathematics

1 answer:

Gnom [1K]3 years ago

4 0

Answer:

see explanation

Step-by-step explanation:

Consider

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

x = 8 , x = - 8 ← are the critical points

Then for x² > 64

x < - 8 or x > 8

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victus00 [196]

Answer:

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3 years ago

What is7766 rounded to the nearest thousands

anygoal [31]

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Nate

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What is sin 28°? plzzz help

vfiekz [6]

Answer:

Step-by-step explanation:

Sin(28) is approximately 0.4695

After rewriting all of the options as a decimal:

a) 0.8823

b) 1.875

c) 0.4706

d) 0.5333

when rounding the sin(28) to the nearest hundredth... you get 0.47

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3 years ago

find the perimeter of ABC with verticles A(-1,2) B(3,-2) and C(-1,-2). round answer to nearest hundredth

nata0808 [166]

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Step-by-step explanation:

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3 years ago

The percent of working students increased 21.7% to 8.9%, what was the percent prior to increase

blagie [28]

Answer:

Approximately 7.3%.

Step-by-step explanation:

What is percentage increase?

$\displaystyle \text{Percentage Increase} = \frac{\text{Final Value} - \text{Initial Value}}{\text{Initial Value}} \times 100\%$ .

For this question:

$\text{Percentage Increase} = 21.7\%$ ,
$\text{Final Value} = 8.9\% = 0.089$ , and
$\text{Initial Value}$ needs to be found.

Let $\text{Initial Value} = x$ .

$\displaystyle \frac{0.089 - x}{x} = 0.217$ .

Assume that $x \ne 0$ . Multiply both sides of the equation by $x$ :

$0.089 - x = 0.217x$ .

Add $x$ to both sides of the equation:

$0.089 = (1 + 0.217)x$ .

$\displaystyle x = \frac{0.089}{1 + 0.217} = 0.0731 \approx 7.3\%$ .

In other words, the initial percentage is approximately 7.3%.

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3 years ago