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Veseljchak [2.6K]
4 years ago
10

Solve –5√ x = –15 Please help!

Mathematics
2 answers:
k0ka [10]4 years ago
7 0

Answer:

<h2>x = 9</h2>

Step-by-step explanation:

Domain:\ x\geq0\\\\-5\sqrt{x}=-15\qquad\text{divide both sides by (-5)}\\\\\sqrt{x}=3\qquad\text{square both sides}\\\\(\sqrt{x})^2=3^2\qquad\text{use}\ (\sqrt{a})^2=a\\\\x=9

lianna [129]4 years ago
3 0

Answer:

x=9

Step-by-step explanation:

First divide both sides by -5. Once you do this you should have a result of √x=3. from here, square both sides. This will give you an answer of 9

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Step-by-step explanation:

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8 0
4 years ago
Allen runs at an average rate of 9 mi/hr and walks at a average rate of 3 mi/hr. Write an equation in standard form to relate th
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Answer:

The equation would be 30=12+9x.

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Step-by-step explanation:

Given:

Total Distance traveled = 30 miles

Average rate of walking = 3 mi/hr

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Time for walking = 4 hours

W need to find the time for running.

Solution:

Let Number of hrs required for running be 'x'.

Total Distance traveled is equal Distance Traveled in walking plus Distance traveled in Running

But Distance is equal Rate multiplied by Time.

Framing in equation form we get;

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Substituting the values we get;

30 = 3\times4 +9x\\\\30=12+9x

Hence The equation would be 30=12+9x

Solving above equation we get;

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Hence Allen will Run for 2 hours.

8 0
4 years ago
What percent of 56 is 14?
Llana [10]

Answer:

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Step-by-step explanation:

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8 0
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5 0
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Step-by-step explanation:

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