Answer:
3 inches
Step-by-step explanation:
We need to take the snow on Friday - the snow on Saturday
3 2/7 - 2/7
3 +(2/7-2/7)
3 inches
Answer:
To find the unit price, we divide the total cost by the number of items.
$3.90 ÷ 3 = $1.30
That means the unit price is $1.30 for each sponge.
Answer:
After 45.7 years
Step-by-step explanation:
∵ r = 1/2% per year
∵ P0 = $40
∵ Pn = $50
∵ Pn = P0 ( 1 + r/100)^n-1
∵ P0 is initial value , Pn is the value after n years , is the rate
∴ 50 = 40 (1 + 0.5/100)^n-1
∴ 50/40 = (1.005)^n-1
∴ 1.25 = (1.005)^n-1 ⇒ insert ln in both sides
∴ ln(1.25) = (n-1)ln(1.005)
∴ n - 1 = ln(1.25)/ln(1.005)
∴ n = ln(1.25)/ln(1.005) + 1 = 45.7 years
Answer:
44%
Step-by-step explanation:
the area of a rectangle = Length × Breadth
original area of james pit = 20×20=400in²
new size = 20 + 4 =24 inches
new area = 24 × 24= 576in²
increase in area = 576 - 400 = 176
percentage increase = 
× 100
=
× 100
=0.44 × 100
=44%
percentage increase in area is 44%
Answer:
x=3
Step-by-step explanation:
This is a proportional equation:
Given: x/9=9/27
Cross-multiply: 27x=81
Divide: x=3
So x=3
