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3 years ago

I need help! plz (listing BRAINLIST and giving points) :D

Mathematics

1 answer:

almond37 [142]3 years ago

3 0

Answer:

Step-by-step explanation:

these are two similar triangles, so to solve for x, we create two similar ratios!

x/2 = 7/3.5

cross multiply.

14=3.5x

divide 14 by 3.5

x=4

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Answer:

$108\ minutes$

Step-by-step explanation:

1) we know that

Sally can paint the wall in 54 minutes

The 100% of the wall ------> she can paint in 54 minutes

by proportion

calculate how much is the percent of the work in 36 minutes

$\frac{100\%}{54} =\frac{x\%}{36}\\ \\x=36*100/54\\ \\x=66.67\%$

That means

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2) Sally and Ethan work together, they can paint the wall in 36 minutes

Ethan in 36 minutes can paint (100%-66.67%)=33.33%

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4 years ago

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3 years ago

PLEASE HELP will mark brainly ;)

Aleks04 [339]

Answer:

Both of the top numbers are 1/2 of the bottom number. To check, multiply the top and bottom numbers of 2/4 by 2 and you will get 4/8. (Hopes this helps, have a nice day.)

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I need help! plz (listing BRAINLIST and giving points) ​:D​

I need help! plz (listing BRAINLIST and giving points) :D