Answer:
a) 15-t mph;
b) 15+t mph.
Step-by-step explanation:
a) When the boat travels upstream, the current hinders the boat (the speed of the boat decreases). Thus, the speed of the boat upstream becomes
15-t mph.
b) When the boat travels downstream, the current helps the boat (the speed of the boat increases). Thus, the speed of the boat downstream becomes
15+t mph.
If you would like to know what is the product of (6 * x^3 + 3 * x) * (x^2 + 4), you can calculate this using the following steps:
(6 * x^3 + 3 * x) * (x^2 + 4) = 6 * x^3 * x^2 + 6 * 4 * x^3 + 3 * x * x^2 + 3 * 4 * x = 6 * x^5 + 24 * x^3 + 3 * x^3 + 12 * x = 6 * x^5 + 27 * x^3 + 12 * x
The correct result would be 6 * x^5 + 27 * x^3 + 12 * x.
The formula of simple interest to find the amount
principal plus simple interest
p+si=a
the formula to find the simple interest
principle multiplied by rate of interest multiplied by time the whole divided by 100
p*r*t/100=si
let us replace the formula
43500*2.25*5/100=si
97875*5/100=si
489375/100=si
4893.75=si
4893.75+43500=a
48393.75=a
hope you found this useful
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It is the appearance of two full moons in a calendar month.
