Answer:
-200
Step-by-step explanation:
We are given that:
Simply insert this values into their correspondents in the equation given.
(-5 + (-15)) * (-5 - (-15))
Subtracting two negatives is like adding a positive and a negative.
(-5 + (-15)) * (-5 + 15)
Solve inside the parenthesis.
(-20) * (10)
Multiply.
-200
Since it is about only the outer part of the aquarium which is made of glasses we need to calculate the total surface area.
Surface area of the base = 4*3 = 12 square feet
Surface area of the shorter length of wall = 3*2 = 6 square feet
since it has another wall in opposite side. It has to be multiplied with 2.
6*2 = 12 square feet
Surface area of the longer length of wall = 4*2 = 8 square feet
since it has another wall in opposite side. It has to be multiplied with 2.
8*2 = 16 square feet
Therefore the total surface area that need to be covered with glasses
12+12+16 = 40 square feet
Difference means subtract so we can reduce the choices right away to first and third choices. of the only the first is the difference of squares, namely x² - 4²
Answer:
the answer to the inequality is x>-6
Step-by-step explanation:
x+8>2
x>2-8
x>-6
Answer:
False, they take form of a U shape
