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3 years ago

Which expression was factored completely using the GCF, if the original expression was

Mathematics

2 answers:

amid [387]3 years ago

7 0

Answer:

4x iss the GCF that was factored out.

Step-by-step explanation:

Given the equation 4x²+8x, the greatest common factor will be the maximum factor of 4x² and 8x and that is 4x. Factoring out 4x from the given equation will result into the equation;

4x(x+2)

Note that the the resulting value in the bracket must have no other common factor after the GCF must have been factored out.

Therefore the expression that was factored out using GCF was 4x

Lerok [7]3 years ago

4 0

Answer:

4x(x+2)

Step-by-step explanation:

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The distance between the cities Atlanta and Indianapolis is 540 miles. A motorcycle's speed is 48 mph. For a car it takes 2.25 h

lyudmila [28]

Answer:

5 hours

Step-by-step explanation:

A motorcycle will complete the 540 mile trip in 11.25 hours

And the car will complete it 2.25 hours less, i.e 11.25 -2,25 = 9 hours.

then,

Speed of the car:

60t + 48t = 540

108t = 540

If you Divide both sides by 108 we get t = 5

So, they will meet in 5 hours,

6 0

3 years ago

a rectangular pool is 20 ft wide and 50 ft long. the deck is the same width all the way around the pool. the total area of the d

Alex

First, we need to get the total area of the rectangular pool.
Area = l * w
Area = 20 ft * 50 ft
Area = 1000 ft^2

Then the deck is 456 ft^2 with the width of 20ft, the same as the rectangular pool.

Area = l * w
456 = l * 20
l = 456 / 20
l = 22.8 ft.

So the walkway is 22.8ft wide.

3 0

3 years ago

The triangle below what is the sine of 60°

suter [353]

Answer:

Step-by-step explanation:

sin(60) can be simplified into sqrt(3)/2.

3 0

3 years ago

A swimming pool is 8 meters long, 8 meters wide and 8 meters deep. The water resistant paint needed for the pool costs $6 per sq

Mama L [17]

Answer:

64 feet maybe?

Step-by-step explanation:

6 0

2 years ago

A manufacturing plant uses light bulbs whose life spans are normally distributed, with mean and standard deviation equal to 500

meriva

Answer:

602.50 hours

Step-by-step explanation:

Given that a manufacturing plant uses light bulbs whose life spans are normally distributed, with mean and standard deviation equal to 500 and 50 hours,

It was decided to replace the bulbs so that no more than 2% of the bulbs to burn out between replacement periods

i.e. we have to construct 98% confidence interval right tailed to get this.

Z value is 2.05 for this (Upper tailed 0.98 probability)

Hence margin of error $= 2.05 (std dev)\\=2.05(50)\\= 102.50$

The upper bound for this would be

$500+102.50 =602.50$

So to keep below 2% the bulbs to burn out it should be replaced before 602.50 hours.

4 0

3 years ago