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Lapatulllka [165]
3 years ago
15

If it takes 30 minutes to fill a 750000 cm3 (cubed) pool

Mathematics
2 answers:
Slav-nsk [51]3 years ago
8 0
First find the difference (1,200,000 - 750,000) which is 450,000. so how long does it take to fill 450,000 cm3? what i did was do 50% of 750,000 which is 375,000 then do 10% of 750,000 which conviniently comes up to 450,000 when added together so it takes 60% of 30 minutes to fill the remaining diffrence. 50% of 30 is 15 and 10% is 3 so 15+3 = 18 minutes. so to fill the pool you do, time of 750,000 + time of 450,000 = time of 1,200,000 (30 + 18 = 48)

48 minutes is the answer
Gala2k [10]3 years ago
5 0
Step 1: Find out how many cm3 is filled in a minute.
750000/30 = 25000cm3 per minute
Step 2: Find out how many minutes it takes to fill 1200000cm3.
1200000/25000 = 48 minutes

Answer: 48 minutes
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If EF=2x-12, FG= 3x-15, and EG=23, find values of x, EF, and FG
velikii [3]

we have that


*-------------------------*--------------------------------*

E                            F                                     G


EF=2x-12

FG= 3x-15

EG=23


we know that


EF + FG = EG


so

[2x - 12] + [3x - 15] = 23 simplify

5x - 27 = 23 add 27 to both sides

5x = 50 divide both sides by 5

x = 10

EF=2x-12-------> EF=2*10-12-------> EF=8

FG= 3x-15------> FG=3*10-15------> FG=15



therefore


the answer part a) is

the value of x is 10


the answer part b) is

the value of EF is 8


the answer part c) is

the value of FG is 15

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3 years ago
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Step-by-step explanation:

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5 0
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twice a number plus another number is 310. The difference between the two numbers is 55. What are the two numbers
Masteriza [31]
T us assume the two numbers to be "x" and "y".
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2x + y = 310
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x = y + 55
Now let us put the value of x in the first equation, we get
2x + y = 310
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Now putting the value of y in the second equation, we get
x - y = 55
x - (200/3) = 55
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3 0
3 years ago
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lesya [120]

Answer:

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Step-by-step explanation:

See attachment for the missing figure.

Assuming the complete question is:

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2UY+2UV=P

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