Pump A = 45 mins
Pump B = 35 mins
Pump A and B = (45 x 35) / ( 45 + 35) = 19.69 mins (nearest hundredth)
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Answer: 19.69 mins
Answer:
the answer is actually 313 ft not a single person has answered the correct answer... smh
Explanation:
313 ft
sinΘ = opp/hyp
Hailey's depth: x = 300sin30 = 150
partner's depth = 150 + 25 = 175
then, find horizontal distance
300^2 = 150^2 + b^2
b = 150 x square root of 3
then,
c^2 = (150 x square root of 3)^2 + (175)^2
c = 313.25
This is a systems of equations.
s = stamp, e = envelope
Substitute e + 9 for s.
.1(e + 9) + .13e = 2.51
Simplify.
.1e + .9 + .13e = 2.51
Simplify.
.14e + .9 = 2.51
Subtract .9 from both sides.
.14e = 1.61
Divide both sides by .14.
e = 11.5
Now, you can input e into the other equation.
11.5 + 9 = s
Simplify.
20.5 = s
s = 20.5, e = 11.5
So, his down payment was 1500.
He has 3000 to pay off.
Yearly Payment = 350*12 or 4200
Yearly Interest = 3000/Yearly Payment or 71%
I am 100% sure that is right, you sure you didn't make a mistake copying.
