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Umnica [9.8K]
3 years ago
12

A group of 5 painters takes 21 hours to paint a house. How long would it take a group of 7 painters to paint the same house?

Mathematics
2 answers:
VladimirAG [237]3 years ago
5 0

Answer:

29.4

Step-by-step explanation:

if 5  painters takes 21 hours that makes it 4.5 per person so multiply that by 7 and there you go!

lord [1]3 years ago
5 0

Answer:

15

hope it helps

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Answer:

Step-by-step explanation:

10y2 - 17y + 12 = y + 16

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Now put formula

x = -b +- (square root) b2 - 4ac

                 2a

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y = -(-16) +- (square root) -16 - 4 (10) (-4)

                             2(10)

y = 16 +- (square root) -16 - 400

                                20

y = 16 +- (square root) -416

                         20

y = 16 +- 20.396

              20

Now this +- is the plus minus thingy in which two answers come

The first we will do is +

16 + 20.396                                         16 - 20.396

  20                                                             20

= 1.8198                                                           = -0.2198

6 0
3 years ago
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