discount = price times % off
discount = 22.50 x 0.20
discount = $4.50
Answer:
12 feet
Step-by-step explanation:
Two buildings have the same total number of heights
The first building has 6 floors each with height h
The second building has a ground floor of 36 feet and 3 other floors each
Since both buildings have the same height then
Height of first building= height of second building
The first step is to calculate the height of the first building
Height of first building = 6h
The height of the second building is
36 + 3h
Therefore the height of each floors can be calculated as follows
6h= 36 + 3h
Collect the like terms
6h-3h = 36
3h= 36
h= 36/3
h= 12
Hence the height of each floors is 12 feet
Answer:
C 28
Step-by-step explanation:
Put the given value where x is in the expression and do the arithmetic.
-2(3(-3) -2) +(-3) +9
= -2(-9 -2) -3 +9
= -2(-11) -3 +9
= 22 -3 +9
= 19 +9
= 28
Simple interest is where 3% of the original value is added on each year
goal number = $102
original number = $680
3% of $680 can be found by getting 1% and multiplying by 3
100% = original number = $680
100% / 100 = 1% so $680 / 100 = $6.80 = 1%
3% = $6.80 * 3 = $20.40
so each year the money rises by $20.40
to find out how many years it would take to get to $102:
$102 / $20.40 = 5 years
