Let the number of coins = X
A nickel is 0.05
A dime is 0.10
A quarter is 0.25
Set up an equation to add all the coins together to equal the total she has:
0.05x + 0.10x + 0.25x = 2.00
Simplify:
0.40x = 2.00
Divide both sides by 0.40
x = 2.00 / 0.40
x = 5
Check:
Nickels = 0.50 x 5 = 0.25
Dimes = 0.10 x 5 = 0.50
Quarters = 0.25 x 5 = 1.25
0.25 + 0.50 + 1.25 = 2.00
She has 5 of each coin.
The price after the sale is (18/22.5)*100 = 80% from the original price
so, the percentage of decrease in the price of the shirt is 100% - 80% = 20%
another way,
how much is decreased / original price *100
(22.5-18) / 22.5 *100 = 20%
Answer:
There is only B. one solution
Step-by-step explanation:
The solving steps are on photo math if you need help with that.
"coplanar"
Coplanar means they lie in the same plane.