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3 years ago

Factor 99-45f+36b to identify the equivalent expression 2 answers possible

Mathematics

2 answers:

koban [17]3 years ago

6 0

9(11−5f+4b) and 3(33−15f+12b)

yulyashka [42]3 years ago

5 0

For this case we have the following expression:

$99-45f + 36b$

We must find the common factor of the coefficients.

We have then:

<em>Using common factor 3: </em>

$3 (33-15f + 12b)$

<em>Using common factor 9: </em>

$9 (11-5f + 4b)$

Answer:

The two equivalent expressions are given by:

$3 (33-15f + 12b)\\9 (11-5f + 4b)$

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A gallon of stain is enough to cover 200 square feet of decking. Bradley has two areas of decking he would like to cover with st

Pani-rosa [81]

The expression that we need to get is:

$N = \frac{(23)*(10.4) + (10.5)*(7.2)}{200}$

So the correct option is the second one.

<h3>Which expression gives the number of gallons of stain Bradley will need?</h3>

We know that 1 gallon is enough to cover 200 ft².

We have two rectangular areas, one of:

23 feet by 10.4 feet, and other of 10.5 feet by 7.2 feet.

Then the total area is:

A = (23 ft)*(10.4 ft) + (10.5ft)*(7.2 ft)

The number of gallons needed is given by the quotient between the area that we want to cover, and the area that covers one gallon, so the expression is:

$N = \frac{(23ft)*(10.4ft) + (10.5ft)*(7.2ft)}{200ft^2} \\\\N = \frac{(23)*(10.4) + (10.5)*(7.2)}{200}$