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Sidana [21]
3 years ago
13

The width of a rectangle is 3 units less than the length. The area of the rectangle is 28 units. What is the width, in units, of

the rectangle.
Mathematics
1 answer:
KATRIN_1 [288]3 years ago
8 0

Answer:

4

Step-by-step explanation:

Let's call the width W and the length L.

We know the width is 3 less than the length, so:

W = L - 3

And we know the area is 28, so:

28 = WL

If we solve for L in the first equation:

L = W + 3

And substitute into the second equation:

28 = W (W + 3)

28 = W² + 3W

0 = W² + 3W - 28

0 = (W + 7) (W - 4)

W = -7, 4

Since W can't be negative, W = 4 units.

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dybincka [34]

Answer:

16/45

Step-by-step explanation:

Step 1:  When dividing fractions, use “KFC”.  It means Keep the first fraction, Flip the second one, and  

              Change it to multiplication

-4/20 ÷ -9/16    →    -4/20 ∙ 16/-9

Step 2:  Reduce any fractions if necessary, it makes multiplying them easier and you will have to reduce anyway at the end.  It’s easier arithmetic to reduce at this step.  The first fraction reduces because both the numerator and denominator are divisible by 4.  

-1/5  ∙   16/-9    

Step 3:  Multiply numerators and denominators together to get one fraction

(-16)/(-45)  

Step 4:  Cancel out the negatives, a negative divided by a negative is a positive.  Our final answer is

 

16/45  


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3 years ago
What is the slope of the line that contains (-3, 4) and (7, 5)
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Apply the slope formula as follows:

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3 years ago
I WILL GIVE BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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Answer:

Step-by-step explanation:

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3 years ago
Use the distributive property to expand -4 (-2+3x). Which is an equivalent expression?
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Answer:

The answer should be <u>8-12x......if i take a wild guess out of your answer choices, would say C.  </u>

Step-by-step explanation:

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<u />

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