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4vir4ik [10]
3 years ago
8

suppose that a cell phone plan charges $15 for the first 60 minutes or less used in a month and $0.50 for each additional minute

. Write a piecewise function that shows the charges for time t where t ranges from 0 to 63 minutes
Mathematics
1 answer:
cupoosta [38]3 years ago
8 0
F(x)=15 when x<span>≤60
     =.5(x-60)+15  when x>60
</span>
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You roll two number cubes, what is the probability of rolling two 5’s?
RoseWind [281]

10 i think i don't know how to deleat this so can u?

3 0
3 years ago
HURRY HELP! ILL MARK BRAINLEST ANSWER!!! if I have an 82 in a class, and I get 100 on two projects worth 15% of my grade, what w
dsp73

Answer:

Your final grade would be 87.4

Step-by-step explanation:

When an assessment is worth a certain percentage of a final grade, the grade percentage of the assessment is taken from its allocated percentage of the final grade. For example:

One project is worth 15% of the final grade, and you got 100% on it. This means that the percentage it contributes to the final grade is 100% (achieved) of 15% (allocated %). 100% of 15% is 15% (15x1). This means that if you hypothetically only completed the project 100% without other assessments, your final grade would be 15%.

This is the same for the other project: 100% (achieved) of 15 (% worth of final grade) = 15.

This is because when you get 100% on the project, you get the full 15% of its worth for the final grade (if that makes sense).

So, from both projects, the final grade would be 30.

Now for the 82.

Since the projects together are worth 30% of the final grade, it means that the 82 in class is worth the remaining 70%.

82% (achieved) of 70 (worth %) = 70x0.82 = 57.4

The 82 in class contributes 57.4 towards the final grade.

Since we have 30 from the projects, and the 57.4 from the class, your final grade would be 30+57.4 = 87.4

Hope this helped!

6 0
3 years ago
Write the equation in standard form.<br><br> 3x−9=7y
Ket [755]
In standard form the answer will be if you go by (Ax+by=c )then I must say it's 3x-7y=9
6 0
3 years ago
The median age of the U.S. population in 1980 was 30.0 years. In 1991, the median age was 33.1 years.
ioda

Answer:

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c. No because this just shows the increase in life span not the decrease in children.

Step-by-step explanation:

a. more people on average lived longer lives. (explanation)

b. self explanatory I guess, my answer pretty much explained it.

c. life span of US citizens does not effect the children population. I guess you could say people lived longer lives to have more children, so possibly the number of children could have increased.

8 0
3 years ago
What are the roots of x in the equation −4−14x=x+5 ?
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First you would subtract x from both sides to move all the x's to one side Then you would add 4 to both side to move all the non x's to one side Lastly divide by negative 15 to have x by itself 9/-15 =-.6 So x as has root at x=-0.6
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