4 years ago

7^2 + 8^3 equals what

Mathematics

1 answer:

Andre45 [30]4 years ago

5 0

Answer:

561

Step-by-step explanation:

assuming the ^ means to the power of, 7*7 is 49 and 8*8*8 is 512

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Mot gonna say anything anymore but uh yeah

melamori03 [73]

Answer:

x=5

Step-by-step explanation:

5x-3=4x+2

x-3=2

x=5

6 0

3 years ago

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What is the solution of StartRoot x squared + 49 EndRoot = x + 5?

Natasha2012 [34]

$x=\frac{12}{5}$ or x= twelve-fifths

Option A is correct.

Step-by-step explanation:

We need to find the solution of:

$\sqrt{x^2+49}=x+5$

Solving:

Taking square on both sides:

$(\sqrt{x^2+49})^2=(x+5)^2\\x^2+49=x^2+2(x)(5)+25\\Simplifying:\\x^2+49-x^2-10x-25=0\\-10x+24=0\\-10x=-24\\x=\frac{-24}{-10}\\ x=\frac{24}{10}\\x=\frac{12}{5}$

Verifying the solution by putting x = 12/5 in the given equation, we get true result.

So, $x=\frac{12}{5}$ or x= twelve-fifths

Option A is correct.

Keywords: Solving Square root Equations

Learn more about Solving Square root Equations at:

#learnwithBrainly

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4 years ago

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The volume of a cube can be found using the equation V = s^3, where V is the volume and s is the measure of one side of the cube

Nina [5.8K]

This is confusing , sorry I cannot help

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3 years ago

A farmer plants apple, pear and cherry trees

gogolik [260]

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3 years ago

Evaluate: 15+6-13-(-12)

rosijanka [135]

The answer is 20.

First you would multiple the negative with the negative 12, then you just add/subtract.

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3 years ago

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