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PilotLPTM [1.2K]

3 years ago

7

If a hallway measuring 90 feet by 7 feet requires 1/2 a fluid ounce of cleaning solution per square foot, how much cleaning solu

tion is needed to clean the hall ?

1 answer:

kirill115 [55]3 years ago

4 0

90ft by 7ft gives an area of:
90 x 7 = 630 sq ft

1/2 fl oz is needed for each square foot

630 x 1/2 = 315 fl oz required.

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For what value of x is the rational expression below undefined? x+8/x^2 -2x-24

Katena32 [7]

First step: Factor the expression.
(x + 8) / (x - 6)(x + 4)
Set each factor of the denominator equal to zero.
x - 6 = 0 x + 4 = 0
add 6 to both sides subtract 4 from both sides
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The function would be undefined if x = 6 or x = -4

3 0

3 years ago

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1)<br> Find the value of x.

Stells [14]

x=8

Explanation:

the opposite side is 72, which means I have to make 9x end up equaling 72.

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<u>Therefore</u>

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2 years ago

A force of 192 lb is required to hold a spring stretched 3 ft beyond its natural length. How much work W is done in stretching i

taurus [48]

Answer:

The work done in stretching the spring is 8 lb.ft

Step-by-step explanation:

Given;

Applied force, F = 192 lb

extension of the spring, x = 3 ft

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$k = \frac{F}{x} \\\\k = \frac{192 \ lb}{3 \ ft} \\\\k = 64 \ lb/ft$

When the spring is stretched 6 inches beyond its natural length, the work done is calculated as follows;

x = 6 inches = 0.5 ft

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Therefore, the work done in stretching the spring is 8 lb.ft

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3 years ago

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DENIUS [597]

Answer:

2 $\sqrt{61}$

Step-by-step explanation:

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