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tekilochka [14]
3 years ago
12

The length of a rectangle is 2 units shorter than one-fifth of the width, x.

Mathematics
2 answers:
Sonja [21]3 years ago
8 0

I just took the test and the answer is B. 12/5x - 4

In case anyone else has the same question

scoray [572]3 years ago
7 0
Y = 1/5x - 2

Perimeter = 2(x + y)

P = 2(x + 1/5x - 2)
<span>P = 12/5x - 4</span>
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Note that a square has 4 congruent and equal length sides.

The total perimeter is 36

Divide 36 with 4

36/4 = 9

9 inches is your answer

hope this helps

5 0
3 years ago
A cell phone company charges a monthly rate of $12.95 and $0.25 a minute per call. The bill for m minutes is $21.20. Write an eq
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Answer:

y= 12.95x + 0.25

Step-by-step explanation:

4 0
3 years ago
Factor by using the perfect-square trinomial formula. <br><br> 100x^2+20x+1
a_sh-v [17]
To factor first multily 100 and 1 and get 100

then find what 2 numbers multiply to get 100 and add to get 20

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group
(100x^2+10x)+(10x+1)
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8 0
3 years ago
Read 2 more answers
Boston, Massachusetts had a population of 617,594 people during January 1 2010, and 675,647 people on January 1 2020.
tigry1 [53]

Answer:

  • See below

Step-by-step explanation:

<u>Exponential function is:</u>

  • y = abˣ

<u>If we consider the time difference in years as x and the initial population as a, then we get:</u>

  • 675647 = 617594*b¹⁰

<u>Find the value of b:</u>

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  • b = 1.09399864636^(1/10)
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<u>The equation we got is:</u>

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Here we have y- population after x years since 2010, x - the number of years since 2010 and 1.009 is the population growth rate.

5 0
2 years ago
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PtichkaEL [24]
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Sqrt (N) = 1.96*1.9/0.23

N = (1.96*1.9/0.23)^2 = 262.16 ≈ 263

Minimum sample size required is 263 students.

3 0
3 years ago
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