Answer:
perimeter = 2(x + 5)
this is 2x + 10
x = 55 inches
Step-by-step explanation:
this question is a bit weird because they didn't put the units for 5, so I'm assuming it's in inches...
the perimeter of a rectangle will have two of each, so we can put the 2 outside the bracket since it applies to everything. We have x and we have 5 so put those in the bracket with a plus sign because you add when you're calculating the perimeter.
5 + 5 = 10
120 - 10 = 110 inches (this is 2x)
110 ÷ 2 = 55 inches
Answer:
Step-by-step explanation:
Given:
using the properties of log we can take the power 1/2 and multiply it.
now we can differentiate:
this is our answer!
There is a way to work it out with a pencil and paper, but that's too complicated
to try and explain with only text, like we have here.
I don't usually recommend this for things that can be done easily on paper ...
but for square roots, your best bet is to use a calculator.
The square root of 30 does not come out even. It starts out 5.477225...
and it keeps going and never ends.
The negative of 5.477225... is also a square root of 30. Every number has
two square roots ... the positive and negative of the same number.
Answer:
A
Step-by-step explanation:
(fg)(x) = f(x) × g(x)
= (x - 8)(x² + x - 1)
Each term in the second factor is multiplied by each term in the first factor, that is
x(x² + x - 1) - 8(x² + x - 1) ← distribute both parenthesis
= x³ + x² - x - 8x² - 8x + 8 ← collect like terms
= x³ - 7x² - 9x + 8 → A
There are no restrictions on the domain.
