Let n = one of the angles
Let 2n -30 = the other
n+ 2n -30 =90⁰ (because they are complementary)
Combine like terms -- 3n -30 = 90
Add 30 to both sides of the equation
3n=120°
Divide both sides by 3 and n=40° 2n -30 = 80 -30 = 50°
So one angle is 40° and the other is 50° and those angles are complementary.
Your answer is $1620.
To solve this, first look at what we're given. $324 is spent a month on fuel, and fuel is 20% of their income. Therefore, $324 is 20% of the family's income per month.
Now, to solve this, we're looking for 100% of the family's income. 20% is 1/5 of 100%, so therefore $324 is 1/5 of the family's full income.
To get 100%, then multiply 20% by 5 to get 100%, and therefore multiply $324 by 5 to get the full income.
$324 * 5 = 1620, or your answer.
Good luck!
A direct proportion is any equation where y = mx+b. (i.e., a linear equation)
Each side of 3y = 1/2x can be divided by 3 to get y = 1/6x, satisfying the condition of y = mx+b. (b=0)
In this case, the constant of proportionality would be 1/6.
Answer:
3.5°
Step-by-step explanation:
Subtract 82 and 54, to find the total change in temperature, 28.
7:00 am and 3:00 pm are 8 hours apart, so divide 28 by 8.
Your answer should be D, 3.5° per hour.
Answer:
37.62 degrees + 47.87 degrees = 85.49 degrees
Step-by-step explanation:
For this question we are trying to find the "absolute value" between these 2 numbers, because one of the numbers are negative and the other one is positive, we are going to add both of them together. That is how we got 85.49. In a different equation, we might have done something different.
