On Mars, an object weighs 38% as much as on Earth. How much would a person who weighs 165 pounds on Earth weigh on Mars?
2 answers:
Answer: 62.7 pounds
Step-by-step explanation:
Given : On Mars, an object weighs 38% as much as on Earth.
We can write 38% as 0.38 [We divide percent by 100 to convert it in to decimal]
If the weight of an person on Earth is 165 pounds, then his weight of Mars will be :-
Hence, the weight of person on Mars= 62.7 pounds
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Answer:
(d).
Step-by-step explanation:
sin² β + cos² β = 1
cos (α + β) = cos α cos β - sin α sin β
cos α = √(1 - ) = 21 / 29
cos β = 12 / 13
sin β = √(1 - ) = 5 / 13
sin α = 20 / 29
cos (α + β) = ×
-
×
=