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Naddika [18.5K]
3 years ago
13

A cell phone company charges $39.99 flat fee each month, plus $0.05 per minute. If m represents the number of minutes used in a

month, which expression can be used to calculate a monthly payment?
39.99 + m

39.99 + m

0.05m + 39.99

0.05 m + 39.99

39.99m + 0.05

39.99 m + 0.05

0.05m

0.05 m
Mathematics
1 answer:
ladessa [460]3 years ago
6 0

Answer:

Step-by-step explanation: A cell phone company charges $39.99 flat fee each month, plus $0.05 per minute. If m represents the number of minutes used in a month, which expression can be used to calculate a monthly payment?

39.99 + m

39.99 + m

0.05m + 39.99

0.05 m + 39.99

39.99m + 0.05

39.99 m + 0.05

0.05m

0.05 m

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Find unit rate of pages read per minute:

(5/8)/(2/3)

(5/8)*(3/2)

(5*3)/(8*2)

(15)/(16)

15/16

Kenny reads 15/16 pages every minute (unit rate)
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Greg is going to start a lawn mowing business and
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Step-by-step explanation:

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The average age of all students at a certain college is 22 years and the standard deviation is 2 years. What is the probability
Marianna [84]

Answer:

The probability that the average age of a randomly selected sample of 100 students will be less than 21.8 years is 0.159

Step-by-step explanation:

According to the given data we have the following:

mean = μ= 22

standard deviation = σ = 2

n = 100

μx = 22

σx=σ/√n=2/√100=0.2

Therefore, P( x < 21.8)=P(x-μx)/σx<(21.8-22)/0.2

=P(z<-1)

= 0.159

The probability that the average age of a randomly selected sample of 100 students will be less than 21.8 years is 0.159

3 0
3 years ago
2x + y = −3 −2y = 6 + 4x Write each equation in slope-intercept form.
Zanzabum

slope intercept form is y=mx+b

so solve for y


2x+y=-3

minus 2x both sides

y=-2x-3


-2y=6+4x

divide both sides by -2

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6 0
3 years ago
2/3x-7=17 some help plssss!!!!!!!
Galina-37 [17]
Process:

2/3x -7 = 17
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Answer: X = 36
5 0
3 years ago
Read 2 more answers
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