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Mashutka [201]
3 years ago
15

Solve the equation using square roots: 2x²-17 = 15

Mathematics
1 answer:
Alekssandra [29.7K]3 years ago
3 0

2x² - 17 = 15

2x² = 15 + 17

2x² = 32

x² = 32/2

x² = 16

x = ±√16

x' = 4

x'' = -4

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Which interval is the solution set to 0.35x - 4.8 < 5.2 -0.9x?
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Answer:  (-\infty, 8)

Step-by-step explanation:

Given the following inequality:

0.35x - 4.8 < 5.2 -0.9x

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The steps are:

1. Add 0.9x to both sides of the inequality:

0.35x - 4.8+0.9x < 5.2 -0.9x+0.9x\\\\1.25x-4.8

2. Add 4.8 to both sides:

1.25x-4.8+4.8

3. Divide both sides by 1.25:

\frac{1.25x}{1.25}

Notice that "x" is  less than 8. This indicates that 8 is not included in the solution and you must use parentheses.

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(-\infty, 8)

8 0
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Write the expression. Then, check all that apply.
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rebecca wants to crochet a scarf that is at least 4.4 feet long. So far, she's completed 2.5 feet. How much more does Rebecca in
vlabodo [156]

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