A trapezoid has an area of 21 square centimeters and a height of 5 centimeters. What is the sum of base lengths of the trapezoid?

8.4 cm

Step-by-step explanation:

Area of a trapezoid = where (a+b) is the sum of the base lengths and h is the height.

Here we have

So the sum of the base lengths is 8.4 cm.

wholesale price is the initial price before markup. retail price comes after the markup.

a price of 8 bucks that's marked up by 100%   is

formula: initial price + (percent markup in fraction/decimal)(initial price)

8+(1)(8)

8+8

16

retail price is $16.

think about it deeply and passionately about this property

i am sorry