5^-1x3^-2=1/5x1/3^2=1/5x1/9=1/(5x9)=1/45
Answer:
11
Step-by-step explanation:
Multiply the parenthesis
2*x = 2x
2*5 = 10
2x-10 = 12
Because we subtract 10 to get 12, we add 10 to see the 2x
12+10 = 22
Now 2x = 22
2x=22
2x / 2 = 22 / 2
x=11
You distribute the 2 to both numbers to get 2x-2=11, move the 2 to the other side by adding it to the 11. 2x=13. Divide 13 by 2, and X=6.5
Answer:
$68.97
Step-by-step explanation:
Markup is the difference between the cost of an item and the price at which it is sold:
cost price + markup = selling price
Here, the markup is said to be 70%. The base for that percentage can be either the cost price or the selling price. The way this question is worded suggests the markup is 70% of the cost price.
So, we have ...
cost price + 0.70 × cost price = selling price
or
cost price × (1 + 0.70) = selling price
__
Then, to find the cost price, we can divide by its coefficient in this equation. Doing that gives ...
cost price = (selling price)/1.70
cost price = $117.25/1.70 = $68.97
The store's purchase price before the markup for this item was $68.97.
