Answer:
Step-by-step explanation:
(2):
First let's organise the data:
33 miles ... x mph ... 4h - downstream
33 miles ... y mph ... 7h - up the stream
x = 33/4 = 8.25 mph
y = 33/7 = 4.71 mph
(3)
P(x) = 
To find the amount of key rings sold when the profit is 5000$ we have to equate P(x) with 5, because in the problem the profit of the key rings is displayed in terms of thousands.
Since the number of keyrings sold has to be positive the only answer is 4 thousand key rings.
The answer is 156.9. Because if it is the hiper x-43 and the maxiumum speed is 6750 you need to square root it then divide it.
Given:
64 total students
x = drama club students
y = yearbook club students
x = y + 10
y = 64 - x
y = 64 - x
y = 64 - (y + 10)
y = 64 - y - 10
y + y = 64 - 10
2y = 54
2y/2 = 54/2
<span>y = 27
</span>x = y + 10
x = 27 + 10
<span>x = 37
</span>To check:
x + y = 64
37 + 27 = 64
64 = 64
Answer:
346585274.64
Step-by-step explanation:
The surface area of a sphere is 
The radius is 3963
4 * 3.14 * 3963 * 6963 = 346585274.64
Answer:
a=2/23
Step-by-step explanation:
-53a-16a+18-12=0
-69a+6=0
-69a=-6
-69a/-69=-6/-69
a=2/23
