3x^2-39+120 factor this
2 answers:
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Answer:
<em>Area = 254.34 inches ³</em>
Step-by-step explanation:
The formula to find the surface area of a sphere is:
To find the volume of the sphere, we first need to figure out the radius () of the sphere. We can accomplish this by reversing the formula that was used to find the surface area.
Divide both sides by pi ().
Divide both sides by 4.
Find the square root of both sides.
<em>radius = 9</em>
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Insert the value of the radius into the formula for finding the volume of a sphere.
<em>Area = 254.34 inches ³</em>
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~Hope this helps!~
Step-by-step explanation:
Step 1: Write our Givens
Move the constant term ,(the term with no variable) to the right side.
Here we have a negative 7, so we add 7 to both sides
Next, we take the linear coeffeicent and divide it by 2 then square it.
Then we add that to both sides
Next, we factor the left,
we got 5 because 5 add to 10 and multiply to 25 as well.
so we get
This is called a perfect square trinomial.
Next, we take the square root of both sides
± menas that we have a positive and negative solution.
Subtract 5 form both side so we get
The greater solution is when sqr root of 32 is positive so the answer to that is