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kow [346]
3 years ago
9

PLEASE HELP ME!!!!!!!

Mathematics
1 answer:
AnnyKZ [126]3 years ago
5 0

Answer: its not showing up

Step-by-step explanation:

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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
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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

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3 years ago
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Answer:

y=2x-1

Step-by-step explanation:

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at a conference of 250 people, 30% of the participants are french, 35% are americans, 20% are germans, and the rest are of the o
Lady bird [3.3K]
Ok...we got 250 people
30% are French, 35% are Americans, 20% are Germans....thats 85%.
This means 15% are from other countries

3 not from other countries...
0.85 * 0.85 * 0.85 = 0.6

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Answer:

Please see attached picture for full solution.

4 0
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Mick dropped 2 pennies and he had 7 how many does he have left
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Answer:

5

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