Use PEMDAS to figure out which expression to work out first:
Parentheses
Exponents
Multiplication/Division
Addition/Subtraction
First, we'll want to solve the term with parentheses:
The equation should now look like this:
Divide to get your answer:
The answer is 0.75.
To solve percent problems, you can use the equation, Percent · Base = Amount, and solve for the unknown numbers. Or, you can set up the proportion, Percent =, where the percent is a ratio of a number to 100. You can then use cross multiplication to solve the proportion.
Hope this Helps you... =)=)
Answer:
a = 6, b = - 12
Step-by-step explanation:
Expand the left side and compare the coefficients of like terms to those on the right side.
a(4x - 10) ← distribute parenthesis
= 4ax - 10a
Compare to 24x + 5b , then
4a = 24 ( divide both sides by 4 )
a = 6
Then
5b = - 10a = - 10(6) = - 60 ( divide both sides by 5 )
b = - 12
Answer:
old per: 1280
new per:2560
Step-by-step explanation:
first perimeter u get it by adding all the sides and since its a square then all the sides are equal so u can just do
320*4 which is equal to 1280
and by doubling the sides u can just double it in the old equation meaning
(320*2)*4
which is equal to 2560
