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If it simple interest it’s 2 years
Answer:
D
Step-by-step explanation:
For simplify the work we can start to factorise all the possibles expressions:
2x + 8.
8 is multiple of 2, so it can became
2(x+4)
x^2 - 16 this is a difference of two squares, so it can be rewritten as:
(x+4)(x-4)
x^2 + 8x + 16
we have to find two numbers whose sum is 8 and whose product is 16
the two number are 4 and 4
it becames:
(x+4)(x+4)
x+ 4 can‘t be simplified
if we look at the expression, we can find that x-4 appears at the numerator so
x^2 - 16 must be at numerator
but the second factor (x+4) doesn’t appear, so has been simplified. This situation can be possible only in the D option
in fact
(x+4)(x-4)/2(x+4) * (x+4)/(x+4)(x+4)
it became
(x+4)(x-4)/2 * 1/(x+4)(x+4)
(x-4)/2(x+4)
Answer:
Helena needs 2 ¹/₂ cups water and 1 ¹/₄ cups vinegar for a half batch. She needs 10 cups of water and 5 cups of vinegar for a double batch.
Answer:
It is not proportional
Step-by-step explanation:
To figure out if something is proportional they have to equal the same thing.
As you can see on the problem 0.2 and 0.2 are the same thing, and since one is on the numerator and one is on the demoninator those two can cross out.
Now we come to the 0.08 and the 0.8.
They are not the same thing the 0.08 has an extra 0.
So this is not proportional
<em>-I hope this helps! -Karen</em>
