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dsp73
3 years ago
10

Haley pays a monthly fee of $20 for her cell phone and then pays 5 cents per minute used. The cost of Haley’s cell phone bill ca

n be expressed by the function C(m) = 0.05m + 20, where m is the number of minutes used. What are the domain and range of the function C(m)?
Mathematics
2 answers:
madam [21]3 years ago
8 0
The domain of the function is any positive real number and the range is any positive real number.
svetoff [14.1K]3 years ago
7 0

Answer:

A

Step-by-step explanation:

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A researcher conducted a hypothesis test to see if students on average spend more than 1 hour per homework assignment. The level
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a. True

Step-by-step explanation:

By ∝= 5% we mean that there are about 5 chances in 100 of incorrectly rejecting a true null hypothesis. To put it in another way , we say that we are 95% confident in making the correct decision.

In the given question the null hypothesis is

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So there is a 5% chance that the erroneous conclusion will be made that students spend on average more than 1 hour per assignment.

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Find the distance between (-7, -3), (5, 2)
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Answer:(12,5)

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3 years ago
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A french class has a total of 25 student.The number of males is 7 more than the number of females how many males and how many fe
Lady_Fox [76]

Answer:

16 males and 9 females

Step-by-step explanation:

To solve this we can use a system of equations.

Let's start by naming the number of females x.

The number of males would then be y.

<u>Using these variables, we can set up 2 equations using info provided:</u>

A french class has a total of 25 students, -> x+y=25

The number of males is 7 more than the number of females -> x+7=y

Use substitution to solve.

<u>From the second equation:</u>

x+7=y

Subtract 7 from both sides.

x=y-7

Substitute that into the first equation.

x+y=25

y-7+y=25

Combine like terms.

2y-7=25

Add 7 to both sides.

2y=32

Divide both sides by 2.

y=16

Substitute y=16 into equation 2.

x+7=y

x+7=16

Subtract 7 from both sides.

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3 0
2 years ago
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Tell whether the given value is a solution of the inequality
topjm [15]

Answer:

the given value <u>is</u> a solution of the inequality

Step-by-step explanation:

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12 + (-3) ≥ -4

9 ≥ -4

9 is greater than or equal to -4

5 0
2 years ago
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