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musickatia [10]
3 years ago
9

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

5 0
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:

7 0
2 years ago
~~~15 POINTS~~~<br> Please help me with this question.
Step2247 [10]
Divide the actual building's measurements by the replica's measurements.

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

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The crew member's calculation is incorrect.
7 0
3 years ago
Find -3/7 divided by -15/1
posledela

Answer:

1/35

Step-by-step explanation:

-3/7 / -15/1 =

3/7 * 1/15 =

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6 0
3 years ago
Use synthetic division to solve(X^3+1) divide by. X-1
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