Let x represent Holly's score on 7th math quiz.
We have been given that the mean of Holly's first six math quiz scores was 75%. This means that the average on 1st 6 math quizzes is 75.
To find the total scores on 1st 6 math quizzes, we will multiply 75 by 6 that is .
We will use average formula to find test scores on 7th math quiz.
Let us solve for x.
Therefore, Molly's score on the 7th math quiz was 89.
Answer: is x=4
Simplifying
5x + 4 = 24
Reorder the terms:
4 + 5x = 24
Solving
4 + 5x = 24
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-4' to each side of the equation.
4 + -4 + 5x = 24 + -4
Combine like terms: 4 + -4 = 0
0 + 5x = 24 + -4
5x = 24 + -4
Combine like terms: 24 + -4 = 20
5x = 20
Divide each side by '5'.
x = 4
Simplifying
x = 4
Step-by-step explanation:
Increase by 30%
100+30=130%=1.30
so
40*30000*1.3=1,560,000
if not
40*30000=1,200,000
how muh more
1,560,000-1,200,000=360,000
you earn 360,000 more
D is answer