From the following choices, the correct step in evaluating: ∫ cos2 5x dx is 1 - cos 10x / 2dx.
Answer:
100 cm
Step-by-step explanation:
Given:
AC = BC
AC = 40
2AB=AC
Simplify:
BC = 40
Simplify:
2AB = 40
Algebra:
AB = 20
Here's the sides:
AB = 20
AC = 40
BC = 40
Add all of them together:
100
First, you factor and simplify (respectively) the numerator and denominator. Your equation becomes:

Notice, there is a (x + 7) on both the top and the bottom. Because of this, they cancel each other out. What is left is your answer:
It's very easy!
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First of all, add up all the amounts of all can flavors.
.
What do you think it approximates to?
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I'd say 245.
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Now, how much is 30 out of 245?
.
Around 24%.
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So, what's 245/100? (100 because it is default maximum percentage number)
<span>.
</span>2.45.
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24 divided by 2.45?
.
Around 9%.
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Your best guess is 10% or D.