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rewona [7]
3 years ago
15

Please take a look and help if you can!

Mathematics
1 answer:
alukav5142 [94]3 years ago
8 0

Answer:

see explanation

Step-by-step explanation:

1

The area of a rectangle = length × width

2

To find the width, divide the area by the length

3

width = \frac{area}{length} = \frac{3x^2+9x}{3x}

To simplify divide each term on the numerator by 3x

= \frac{3x^2}{3x} + \frac{9x}{3x} = x + 3 ← width

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There are 36 workers in a construction crew. On a certain day, 29 were present. Approximately, what percent of workers were abse
Setler [38]

Answer:

81%

Step-by-step explanation:

Set up a proportion. 2900 / 36 is approximately 81 percent. So, approximately 81 percent of the crew members showed up for work.

6 0
3 years ago
In a certain​ survey, 513 people chose to respond to this​ question: "Should passwords be replaced with biometric security​ (fin
LenaWriter [7]

Answer:

The sample observations are not a random​sample, so a test about a population proportion using the normal approximating method cannot be used.

Step-by-step explanation:

The necessary conditions are

The sample must be random and independently selected from the normally distributed population.

n*p and n*q both must be greater than 5

There must be two outcomes "success" and "failure"

The number of trials must be fixed.

From the given information 2), 3)and 4) conditions are satisfied, but not 1) because we are not given that people are selected randomly.

Answer: The sample observations are not a random​sample, so a test about a population proportion using the normal approximating method cannot be used.

3 0
3 years ago
4) Expand and simplify<br> 5(x-3) - 3 (x + 5)
Nezavi [6.7K]

Answer:

2x-30

Step-by-step explanation:

5(x-3) = 5x-15

-3(x+5) -3x-15

(5x-15) + (-3x-15) = 2x-30

7 0
1 year ago
Larisa earns $7 per hour.she worked 40 hours at the regular rate, 3 hours at time and half, and 6 hours at double time.
VARVARA [1.3K]

Answer:

$6.07/hr. if I understand the question properly.  See below.

Step-by-step explanation:

I don't see the question, but will assume we want to find Larisa's base pay.  The $7/hr given is the average for the work sequence noted in the problem.  If this is incorrect, ignore the answer.

==================================

Let x be Larisa's base salary.  We are told, I think, that in one stretch of time Larisa earned an average of $7/hour.  That was composed of:

<u>Hours</u>  <u>Rate($/hr)</u>

  40           x

    3        1.5x

<u>     6    </u>     2x

  49

Her total income over this period would be:

40x +3(1.5x) + 6(2x)  [The hours worked times the pay rate for each period]

Her average income per hour would be:

(40x +3(1.5x) + 6(2x))/49

which we are told is $7/hr.

(40x +3(1.5x) + 6(2x))/49 = 7

40x + 4.5x + 12x = 343

56.5x = 343

x = $6.07/hr

6 0
2 years ago
Prime factorization of 84
konstantin123 [22]
<h3>♫ :::::::::::::::::::::::::::::: // Hello There ! //  :::::::::::::::::::::::::::::: ♫</h3>

➷  Split 84 into two numbers that can be multiplied to give 84

42 x 2 = 84

2 is a prime number so we don't need to simplify it further, however, 42 isn't a prime number.

42 can be split into :

21 x 2 = 21

So far, we have 21 x 2 x 2 = 84

The 21 can be split further:

7 x 3 = 21

Therefore, the answer is 7 x 3 x 2^2

<h3><u>❄️</u></h3>

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

6 0
3 years ago
Read 2 more answers
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