PLEASE HELP ME IT TAKES SOO LONG TO ANSWER!!!!!!!!!!!!!!!!!!!!1
1 answer:
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Answer:
c) y = 8
Step-by-step explanation:
in a 30-60-90° Δ the ratio of the sides, respectively, is 1: : 2
if the side opposite the 30°∡ is 8 then 'y' is 8 and 'x' is 16
The circumference of the wheel can be expressed by:
Where r = the radius of the wheel.
Since the spoke reaches from the center of the wheel to its rim then r = length of the spoke
By rearranging the circumference equation we get:
If circumference = 42 inches then:
r = 6.68
Which is closest to B
Your book may have a typo in it as the answer to 4 decimal places is 6.6845 which rounds down to 6.68, not up to 6.69.
Where r = the radius of the wheel.
Since the spoke reaches from the center of the wheel to its rim then r = length of the spoke
By rearranging the circumference equation we get:
If circumference = 42 inches then:
r = 6.68
Which is closest to B
Your book may have a typo in it as the answer to 4 decimal places is 6.6845 which rounds down to 6.68, not up to 6.69.