3 years ago

I need help please?!!!!!!

Mathematics

1 answer:

Alika [10]3 years ago

4 0

Answer: The is B

Step-by-step explanation:

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David can finish painting the room in six hours and his elder brother Anthony can finish it in four hours if both brothers paint

lbvjy [14]

Answer:

2.4 hours

Step-by-step explanation:

David's time = 6 hours

Anthony's time = 4 hours

the combined time is given by the following formula

1/ (david's time) + 1/(anthony's time) = 1/total time

1/6 + 1/4 = 1/Total

4/24 + 6/24 = 1/Total

10/24 = 1/ total (taking reciprocal of both sides)

24/10 = total

total time = 24/10 = 2.4 hours

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3 years ago

Dianna made several loaves of bread yesterday. Each loaf required 2 and two-thirds cups of flour. All together, she used 13 and

Veronika [31]

Answer:

5 loaves and 4

Step-by-step explanation:

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2 years ago

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Divide the actual building's measurements by the replica's measurements.

$\frac{400}{20}=20\\\\\frac{320}{16}=20$

The measurements of the actual building are divided by 20 not 12.
The crew member's calculation is incorrect.

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3 years ago

Find -3/7 divided by -15/1

posledela

Answer:

1/35

Step-by-step explanation:

-3/7 / -15/1 =

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3 years ago

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frozen [14]

The answer is =x^2 +x +1 +2/x-1

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