3 years ago

1. It costs $5820 to get new windows for a certain house. Each of the 28 windows costs the same amount.

1 answer:

4 0

1.A to find the answer, round $5820 to $6000. Then round $28 to $30. Each curtain would cost an estimate of $200.
1.B 5820/28=<span>207.857142857

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Answer:400 miles per hour

Step-by-step explanation:

Let w = speed at which the plane travelled west

Let s = speed at which the plane travelled south

Distance moved in 5 hrs heading west = 5*w = 5w

Distance moved in 4 hrs heading south = 4*s = 4s

Total distance, 3444= 5w + 4s

w = s + 39( 39 miles/hr faster)

5(s+39) + 4s = 3444

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Step-by-step explanation:

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Prove that . 1+cot2 theta = cosec2theta

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see explanation

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