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AnnZ [28]
3 years ago
5

Really don't understand this :/ Please help.

Mathematics
1 answer:
andre [41]3 years ago
5 0
I I think you have the correct answer!
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A can do a piece of work in 4 hours and B can do it in 6 hours. How much time would they take working together to finish the wor
Kipish [7]

Answer:

2.4 hours

Step-by-step explanation:

Let total work = X

Rate of work done = X ÷ time

Rate of A = X/4

Rate of B = X/6

If they work together, rate is the sum of their individual rates, i.e.

X/4 + X/6

= (3X + 2X)/12 (taking LCM)

=5X/12

Rate = X/time

5X/12 = X/time

time = X÷(5X/12)

time = X × 12/(5X)

time = 2.4 hours

Shortcut:

Product of individual times/sum of individual times

= (4×6)/(4+6)

=24/10

=2.4 hours

8 0
3 years ago
Read 2 more answers
Rewrite this expression as a single power 12^5•12^7/-12^4
9966 [12]

Answer:-12^8

Step-by-step explanation:

4 0
3 years ago
1(2.5.3)(2.4.8)(6.2.9.4)
skelet666 [1.2K]
Explain further? Thanks....
6 0
3 years ago
What is the area of the polygon
Rina8888 [55]
The easiest way to do this is find the area of the large rectangle and subtract the two missing pieces. The length of the large rectangle is 24 and its height is 16. 24x16=384. The area is each of the two missing pieces is 2x2=4. Since there are two of them multiply by two 4x2=8. Then subtract eight from the first area calculated. 384-8=376 square meters
5 0
3 years ago
I need help pizzz ASAP
vredina [299]
I’m on confused on what you have to do?
6 0
2 years ago
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