Answer:
a=21.1
Step-by-step explanation:
You can use the given (incorrect) equation and fill in the value of t to find h:
h = 12.5 +9sin(750(3.5)) = 3.68 . . . . feet
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Or, you can use the correct equation, or just your knowledge of revolutions:
h = 12.5 +9sin(750(2π·3.5)) = 12.5 . . . . feet
in 3.5 minutes at 750 revolutions per minute, the propeller makes 2625 full revolutions, so is back where it started — at 12.5 feet above the ground.
Answer:
RQ = 9.
Step-by-step explanation:
m < RPQ = 180 - 90 - 75 = 15 degrees
m < PQM = 75 - 60 = 15 degrees.
So triangle PMQ is isosceles so side PM is congruent to side MQ, therefore MQ = 18.
Triangle RQM is a 30-60-90 triangle with RQ the shortest leg (because it is opposite the lowest angle) so that makes RQ = 1/2 of MQ. (The sides in a 30-60-90 triangle are in the ratio 1:sqrt3:2)
RQ = 1/2 * 18 = 9.
M = 98 = 7×K
98/7 = 7×K/7 = K
The appropriate choice is
d. 7x=98. Divide both sides by 7. Kendall had $14.
Answer
5 and 6 are NOT functions but 4 IS a function
Step-by-step explanation:
A number cannot repeat in the x axis
Answer:
(2,3)
Step-by-step explanation:
The given equations are:

and

Equate both equations:

Multiply through by 2:



x=2
Put x=2 into the first equation:


y=3
The solution is (2,3)