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Leona [35]
3 years ago
9

it takes 63 minutes for four people to paint nine walls how many minutes does it take seven people to paint four walls?

Mathematics
1 answer:
joja [24]3 years ago
3 0

Answer:

16 minutes

Step-by-step explanation:

If it takes 63 minutes to paint 9 walls then it means for every wall, it takes 63/9=7 minutes

Since it is 4 people working for 7 mins, the individual rate is 4/7 minutes per person

When we have 7 people, then the number minutes they take will be 7*4/7=4 minutes per wall

4 min per wall for 4 walls then total time will be 4*4=16 minutes

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A plane intersects a prism parallel to the base of the prism. The cross section is a polygon with eight sides. How many sides do
aleksandr82 [10.1K]

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B.8

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Answer:

see explanation

Step-by-step explanation:

Using De Moivre's theorem

Given

[ 4(cos15° + isin15° ) ]³, then

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5 0
3 years ago
In the diagram, lines AB , CD, and EF intersect at G
Ghella [55]

Answer:

D. 70°

Step-by-step explanation:

Given:

m<DGB = 35°

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Required:

m<AGE

SOLUTION:

m<EGD = m<CGF (vertical angles are congruent)

m<EGD = 75°

m<AGE + m<EGD + m<DGB = 180° (angles on a straight line)

m<AGE + 75° + 35° = 180° (substitution)

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Subtract 110 from each side of the equation

m<AGE = 180° - 110°

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6 0
2 years ago
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Colt1911 [192]
-28xy/4

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Therefore, the first answer is correct.

Hope this helps!
6 0
3 years ago
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