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miskamm [114]
3 years ago
7

David and Fiona have a house painting business. Fiona can paint a house in 3 days, David can paint the same house in 4. How quic

kly could they paint it together?
Mathematics
2 answers:
Naily [24]3 years ago
6 0
3.5 days!

Just because they work together, it doesn't mean they'll work twice as fast!

Find the average of the two by adding 3 and 4 to get 7 and then divide by 2 to get 3 and a half hour.

I think. xD This is kind of tricky.
PilotLPTM [1.2K]3 years ago
6 0

Answer:

i think it would be 3.5 or 3 and 1/2 days

Step-by-step explanation:

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Given: ∠2 ≅ ∠4 Which lines must be parallel?
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B) p and q

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Step-by-step explanation:

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3 years ago
A survey was conducted to determine the amount of time, on average, during a given week SCAD students spend outside of class on
fiasKO [112]

Answer:

Standard Deviation = 5.928

Step-by-step explanation:

a) Data:

Days  Hours spent  (Mean - Hour)²

1              5                61.356

2             7                34.024

3            11                  3.360

4           14                   1.362

5           18               26.698

6          22               84.034

6 days 77 hours,    210.834

mean

77/6 = 12.833    and 210.83/6 =  35.139

Therefore, the square root of 35.139 = 5.928

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