Step-by-step explanation:
0.25 = one quarter - 2/8
3/8 is spent on food
so this leaves 3/8 for savings
therefore we know that $18.27 is 3/8 of her total allowance
so
18.27 ÷ 3 = 6.09
6.09 × 8 = 48.72
thus her total allowance must have been $48.72
Answer:
Step-by-step explanation:
what is the question?
You multiply the 2 numbers so it should come out at 99
Hey
2x+x+x+2y*3y*y
=4x+6y^3
=2(2x+3y^3)
The most important thing here is converting the length into the same units. So:
3 feet 9 inches = 45 inches
now, we know that compound 'growth' can be worked out by multiplying the initial value by the decimal to the power of the years. So, relating to this question, the equation would be:
5 x α⁴ = 45
Now, we have to solve for α!
α⁴ = 45/5
α⁴ = 9
α = ⁴√9
α = 1.732050808
This is the increase every year written as a decimal so, if we want to work out the pure percentage, we have to subtract 1 and then multiply by 100:
1.732050808 - 1 = 0.732050808
0.732050808 x 100 = 73.20508076
Rounded to 2 decimal places the answer would be 73.21% !
