Answer:
8 feet
Step-by-step explanation:
Given data
Area= 64 square feet
Base= x feet
Height= x+8 feet
The expression for the area
A= 1/2b*h
substitute
64= 1/2*x*(x+8)
64= 1/2*x^2+8x
64= (x^2+8x)/2
cross multiply
64*2= x^2+8x
128= x^2+8x
rearrange
x^2+8x-128= 0
using the quadratic formula
a=1
b=8
c=-128
x= -b±√b^2-4ac/2a
x= -1±√8^2-4*1*-128/2*1
simplifying
x= 8
x=-16
Hence the height of the base is
h= 8 feet
Answer:
simple interest is 8350 for 15 months
Step-by-step explanation:
<u>Explanation</u>:-
The simple interest formula A = P (1 + r t)
where 'P' is the principal amount of money to be invested at an interest Rate' r % per period for' t ' number of time periods.
Given data The principal P is borrowed at a simple interest rate r for a period of time t.
Given principal amount P = $8000
simple interest rate r = 3.5%
period of time 't' = 15 months
<u>Calculation</u>:-
Putting time into years

t = 1.25 years
r = 3.5%
r = 0.035 per year
now equation is A = P (1 + r t)
A = 8000 ( 1+ ( 0.035 X 1.25)
A = 8000 X 1.04375
A = 8350
simple interest is 8350 for 15 months.
Answer:
Convert the decimal to a percentage by multiplying the decimal by
100
.
500%
700%
900%
400%
1/9 = .1 repeating because 1 divided by 9 is .1 repeating