12. Ainsley has decided to begin a 5-day sit-up challenge where she plans to increase the number of sit-ups completed each conse
cutive day by the same amount to
gradually build up her core muscle strength.
After talking with a friend who already began the challenge, she's aware that she needs to complete 20 sit-ups on Day 1 of the challenge and will complete 36 sit-
ups on the last day, Day 5.
gradually build up her core muscle strength.
After talking with a friend who already began the challenge, she's aware that she needs to complete 20 sit-ups on Day 1 of the challenge and will complete 36 sit-
ups on the last day, Day 5.
1 answer:
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Answer:
<h3>34.61</h3>Step-by-step explanation:
Find the diagram attached
From the diagram;
Hypotenuse = 81.9
Angle of elevation = 65degrees
Required
The value of x (Adjacent)
Using the SOH CAH TOA identity
cos theta = adjacent/Hypotenuse
cos 65 = x/81.9
x = 81.9cos65
x = 81.9(0.4226)
x = 34.61
Hence the value of x to the nearest hundredth is 34.61
To solve this problem we can use proportion, but first its nice to transform our fraction into improper fraction, so
and
Now we can make proportion
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of fuel
x-----------------------------
Now we can cross multiply
- its the result
and
Now we can make proportion
x-----------------------------
Now we can cross multiply