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erastova [34]
2 years ago
13

Plssssssss help meeeee

Mathematics
1 answer:
RUDIKE [14]2 years ago
5 0
Im pretty sure these are the answer but make sure to double check.
1.C
2.C
3.C
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if three pipes are all opened, they can fill an empty swimming pool in 3 hours. THe largest pipe alone takes one third the time
iogann1982 [59]

Answer: It will take the largest pipe 5.5 hours to fill the swimming pool alone.

It will take the smallest pipe 16.5 hrs to fill the swimming pool alone.

It will take the other pipe 11 hours to fill the pool alone.

Step-by-step explanation: let time needed to fill the swimming pool by the largest pipe be x ... eq (1)

Let time needed to fill the swimming pool by the smallest pipe be 3x ... eq(2)

Let time needed to fill the swimming pool by the other pipe be 2x ...eq(3)

The job to be done (to fill a swimming pool) be 3/x +3/3x+3/2x=1 ... eq(4)

Multiply 6x on both sides you will get:

6(3)+2(3)+3(3)=6x

18+6+9=6x

33=6x

33/6=x

X=5.5hours

Substitute x=5.5 into EQ 2 and 3

3x=3×5.5=16.5hours

2x=2×5.5=11hours

Check: substitute the value of x into eq3/5.5+3/16.5+3/11

0.545+0.182+0.273=0.9997=1

5 0
3 years ago
True or false y4 equals 16 if y is 2.
enyata [817]
False, y4 would equal 8 if y=2
8 0
3 years ago
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Yeah anyone else bored while ur in school so ur browsing brainly??
Margarita [4]

Answer:

I'm Not bored im currently Dying while in school :)

Step-by-step explanation:

8 0
3 years ago
Which number is greater and by how much: A decreased by 50% and then increased by 50% of the result
cricket20 [7]

Answer:

the original number is greater

Step-by-step explanation:

1. let 1x be your starting number

2. therefore, 0.5 * 1x = 0.5x ( amount after you decreased it by 50%)

3. then increase: 0.5x * 1.5 = 0.75x (amount after you increased it by 50%)

4. 0.75x < 1x (this means that the original number is larger than the one you decreased and then increased)

6 0
2 years ago
What's 137 and h as an algebraic expression PLEASE HELP
lesya692 [45]

Answer:

137+h

Step-by-step explanation:

3 0
3 years ago
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