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Sever21 [200]
2 years ago
13

Amy can mop the store in 30 minutes. James can mop the store in 45 minutes. How long would it take them if they worked together?

Mathematics
1 answer:
zavuch27 [327]2 years ago
5 0
Solve the equation 1/30 + 1/45 = 1/x  

where x is the required time

multiply thru by 90x:-

3x + 2x  = 90

x = 90 / 5 = 18

answer 18 minutes
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Please help me!
RUDIKE [14]

Answer:

B. 1/9

Step-by-step explanation:

The positive square root of "x^2 - 4x + 4" is "x - 2". That value is already given to you, 1/3. Just square 1/3 to get 1/9.

7 0
3 years ago
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Jane invested £4000 for 3 years with an interest rate of 1.5%. What was her investment worth at the end of this period?
ddd [48]

Answer:

$4182.7

Step-by-step explanation:= 4000*(1.5%)*3

Year 1= 4000*(100%+1.5%)= 4060

Year 2= 4060*(100%+1.5%)= 4120.9

Year 3= 4120.9*(100%+1.5%)= 4182.7

6 0
3 years ago
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This is really hard please help
attashe74 [19]

Answer:

2/3

Step-by-step explanation:

5 0
3 years ago
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Ernesto saves $5.25 every week about how many weeks will take Ernesto to save $315
nikdorinn [45]

Answer:

It will take 60 weeks for Ernesto to save $315

4 0
2 years ago
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Simplify 1250-(-300)​
grigory [225]

Answer:

1550

Step-by-step explanation:

1250-(-300) <-- positive due to two negative

1250+300

1550

4 0
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