Answer:
The mechanic who worked 5 hours charged $115 per hour, the one who worked 15 hours charged $120 per hour.
Step-by-step explanation:
x = rate of mechanic who worked 5 hours
y = rate of mechanic who worked 15 hours
Then
x + y = 235
5x + 15y = 2375
Just solve these 2 equations above for x and y.
x + y = 235 ⇒ x = 235 - y
Substitute into second equation to find y.
5(235 - y) + 15y = 2375
1175 - 5y + 15y = 2375
10y = 1200
y = 1200/10 = 120
x = 235 - y = 235 - 120 = 115
Hi there
The amount deposited at the beginning of each year So use the formula of the future value of annuity due
FVAD=pmt [(1+r)^(n)-1)÷r]×(1+r)
FvAD future value?
PMT payment per year 200
R interest rate 0.2
T time 3 years
FVAD=200×((((1+0.2)^(3)−1)÷(0.2))
×(1+0.2))=873.6...answer
Hope it helps
<span>y = 4x^2 - 8x + 6 = (2x - 2)^2 + 2 = 4(x - 1)^2 + 2</span><span>
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Answer:
Number of algae in 7 days = 70.355
Step-by-step explanation:
Given:
Algae in beginning = 50
Rate of increasing = 5% per day = 0.05
Number of days = 7 days
Find:
Number of algae in 7 days.
Computation:
Number of algae in 7 days = 70.355
If you give the clues I could help.