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Sidana [21]
2 years ago
14

A window washer cleaned 28 windows in 4 hours. At this rate, how many windows did he clean in 9 hours?

Mathematics
1 answer:
myrzilka [38]2 years ago
8 0

Answer:

63

Step-by-step explanation:

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Answer:Average score for 3 tests is 83.67

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Find the value of x.
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4 0
3 years ago
One side of a rectangle is 3 inches shorter than the other side, and the perimeter is 54inches. What are the dimensions of the r
Julli [10]

Answer:

15 and 12

Step-by-step explanation:

Set the two sides as x and y

y=x-3

P = 2w+2l

2x+2(x-3) = 54

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2 years ago
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64*1.0945

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3 years ago
Find the zeros of the quadratic function. Solve by factoring. x^2+14x=-45
Reptile [31]

So, x^2 + 14 x + 49 - 4 = 0;

Then, we use the formula ( a + b )^2 = a^2 + 2ab + b^2;

We have ( x + 7 )^2 - 2^2 = 0;

Then, ( x + 7 )^2 - 2^2 = 0;

We use the formula a^2 - b^2 = ( a - b)( a + b );

We obtain ( x + 5 )( x + 9) = 0;

Then, x + 5 = 0;

x = -5;

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x = - 9;

-5 and - 9 are the zeros of the quadratic function.

3 0
2 years ago
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