Answer:
x=6
Step-by-step explanation:
Mean is another word for average. It is found by adding up all of the values, and dividing that number by the amount of values you added together.
You have 5 values that get a mean or, average, of 7.4
1) We can write this as the following:
(11+12+5+3+x)/5=7.4
2) To solve, multiply both sides by 5:
11+12+5+3+x=37
3) Now combine all of the numbers on the left:
31+x=37
4) Now subtract 31 from both sides:
x=6
Part A: 0.7(x)
Part B: 8.96/0.7 ---> (You can solve this by yourself)
For getting the answer, you can assume the regular price of the book is x. Then, the sale price would be x-0.3x, which is 0.7x
For part B, the price is 0.7 of the original. Dividing the number by 0.7 gets you the original price
<h3>Zara earned $ 134 on friday including commission</h3>
<em><u>Solution:</u></em>
Given that,
zahra earns $80 each day plus a 6% commission on her sale at an appliance store
zahra has $900 in sales
<em><u>Find the commission amount</u></em>
commission amount = 6 % of 900
Zara earnings including commission amount = 80 + 54 = 134
Thus Zara earned $ 134 on friday including commission
Seventeen-thousand and one hundred 6 thousandths written in standard form would be 17,000.106
Hope this helped =)