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mihalych1998 [28]
2 years ago
6

1. It takes 45 minutes for two people to clean six identical rooms. How

Mathematics
2 answers:
Elena L [17]2 years ago
8 0

Answer:

To clean 20 identical rooms 5 people will take 1 hour .

Hope It Helps You.

IgorLugansk [536]2 years ago
5 0

Answer: 5 people will clean 20 rooms in 1 hour.

Step-by-step explanation:

45 minutes is 45/60 = 0.75 hours

The two people invested 2(0.75) = 1.50 man•hrs to clean 6 rooms

each room took 1.5/6  = 0.25 man•hr/room

To clean 20 rooms will take 20(0.25) = 5 man•hrs

5 man•hrs/5 people = 1 hr.

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lana66690 [7]

Answer:

awnser is A

Step-by-step explanation:

Multiply all sides by 2 then add then up and you get 432.

5 0
2 years ago
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Liula [17]

Answer:

5. 52+56 < 49x -46x

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8 0
2 years ago
The polynomial of degree 4, P ( x ) has a root of multiplicity 2 at x = 4 and roots of multiplicity 1 at x = 0 and x = − 1 . It
Svetlanka [38]

To have roots as described, that means we have the following factors: From multiplicity 2 at x=1 has (x-1)^2 as its factor From multiplicity 1 at x=0 has x as a factor From multiplicity 1 at x = -4 has a factor of x+4 Putting these together we get that P(x) = A (x) (x+4) (x-1)^2 Multiply these out and find P(x) = A (x^2 + 4x) (x^2 - 2x + 1) A ( x^4 - 2x^3 + x^2 + 4x^3 - 8x^2 + 4x ) Combine like terms and find P(x) = A (x^4 + 2x^3 - 7x^2 + 4x) To find A, we use the point they gave us (5, 72) P(5) = A [ (5)^4 + 2(5)^3 - 7(5)^2 + 4(5) ] = 72 A [ 625 + 250 - 175 + 20 ] = 72 A [ 720 ] = 72 Divide both sides by 720 and find that A = 0.1 Final answer: P(x) = 0.1 ( x^4 + 2x^3 - 7x^2 + 4x) or P(x) = 0.1 x^4 + 0.2 x^3 - 0.7x^2 + 0.4x

4 0
3 years ago
Need formula and answers
serious [3.7K]
The top angle (10x+10) is equal to the angle below the lowest line and the skewed line. However, the 4x+2 is on the other side. But both together add up to 180° (a straight line).

So 10x+10 = 180-(4x+2) is the formula you're looking for.

Solving it:

10x+10 = 180-(4x+2) =>
10x+10 = 178-4x =>
14x = 168 =>
x = 12

Look up the theory for F angles and Z angles. 


7 0
3 years ago
Please help!! Will give brainliest
Butoxors [25]

Answer:I think it would be y=2x-6

Step-by-step explanation:

7 0
3 years ago
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