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Elza [17]
3 years ago
10

The length of a rectangle is 1 ft less than twice the width, and the area of the rectangle is 21 ft2 . Find the dimensions of th

e rectangle.
Mathematics
1 answer:
tatuchka [14]3 years ago
8 0
We normally think of 3x7, but the "7" is one more than 2 widths ... double the 3 and halve the 7 ==> 6 by 3.5 works ...
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What is the answer to thiss
lana [24]

Hi Student!

This question is fairly simple because it gives us an equation and they also give us a value for the variable that is within the equation and they tell us evaluate the expression.  So let's plug in the values and solve.

<u>Plug in the values</u>

  • m^2 + 5
  • (9)^2 + 5

<u>Factor out the exponent</u>

  • (9*9) + 5
  • 81 + 5

<u>Combine</u>

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Therefore, the final answer that we would get when substituting m with 9 in the given equation is that we get 86.

5 0
2 years ago
Which graph represents the linar function y=1/3x-4?
spin [16.1K]

Answer:

(0,-4)

Step-by-step explanation:

4 0
3 years ago
A manufacturer of bolts has a​ quality-control policy that requires it to destroy any bolts that are more than 4 standard deviat
Doss [256]

Answer:

more than 15.40 cm and less than  14.60 cm

Step-by-step explanation:

A manufacturer of bolts has a quality control policy that requires it destroy any bolts that are more than 4 standard deviations from the mean.

mean length= 15 cm

standard deviation= 0.10 cm

4 standard deviation from mean= 15±(4×0.10)

therefore, bolts of length more than 15+0.4, and less than 15-0.4 will be destroyed

= 15.40 cm and 14.60 cm

4 0
3 years ago
You are to take a multiple-choice exam consisting of 100 questions with 5 possible responses to each question. Suppose that you
xeze [42]

Answer:

20

Step-by-step explanation:

This is a binomial distribution

n = 100; p = 1/5

E(x) = np = (100)(1/5) = 20

6 0
3 years ago
5.36 - 0.78 =<br><br> 4.58<br> 5.37<br> 4.38<br> 5.48
Daniel [21]
The answer to this is 4.58
6 0
3 years ago
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