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yKpoI14uk [10]
4 years ago
14

working together Jacob and Kayla can clan an attic in 4.24 hours. had she done it alone it would have taken Kayla nine hours. ho

w long would it take Jacob to do alone?
Mathematics
1 answer:
Marizza181 [45]4 years ago
5 0
That’s not enough information to say how long he could do it. He could go slower or faster than her but by how much if so. So it’s not enough info.
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Plz help, I don't need the show all work.
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Answer:

The answer is 108 cm²

Step-by-step explanation:

First, you have to find the height of the parallrelogram using trogonometric formula, sinθ = oppo./hypo. :

oppo. = height

hypo. = 9 cm

θ = 59°

sin 59° = height/9

height = 9 sin 59°

= 7.715 cm (4s.f)

Given that the formula of area of parallelogram is, A = base×height. Then, you can substitute the value into the formula :

base = 14 cm

height = 7.715 cm

A = 14 × 7.715

= 108 cm² (3s.f)

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Answer:

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