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anyanavicka [17]
3 years ago
13

Your long distance telephone provider offers two plans. Plan A has a monthly fee of $15 and $0.25 per minute. Plan B has a month

ly fee of $20 and $0.05 per minute. Write and solve an equation to find the number of minutes that you must talk to have the same cost for each of the plans
Mathematics
1 answer:
icang [17]3 years ago
3 0

Answer:

You'd have to talk for 25 minutes for them to be the same

Step-by-step explanation:

15 + 0.25x

20 + 0.05x

Where x is the number of minutes

You'd have to talk for 25 minutes for them to be the same

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A random sample of 30 seventh grade students shows that 12 of them own a dog. How many seventh grade students can you predict ow
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160

Step-by-step explanation:

If out of 30 7th graders, 12 own a dog then when you have 400 of them, 160 will have a dog as well.

The way I did this was by 400/30: which was 13.3 repeating. I then mutliplied this number by 12, to find the final answer of 160.

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3 years ago
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I need to solve all answers
yan [13]

Answer:

Answers for 19, 20, 22, 24, and 25.

Step-by-step explanation:

19. 23x - 16 + 8x - 21 = 180  

    x = 7

    23 (7) - 16 = 7y - 23

    y = 24

20. 10x -17 = 8x + 1

     x = 9

    6y + 29 + 73 = 180

    y = 13

22. 8x - 35 + 6x - 5 + 3x - 1 = 180

      x = 13

24. m<R is 74

     m<Q is 32

25. m<E is 37

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8 0
2 years ago
6-7(x+1)= -3(2-x)<br> How do you solve this?
kicyunya [14]
<h3><u>Explanation</u></h3>
  • Given the equation.

6 - 7(x + 1) =  - 3(2 - x)

  • Distribute/Simplify

6 - 7x - 7 =  - 6 + 3x \\  - 1 - 7x =  - 6 + 3x

  • Solve the equation for x-term by making x as the subject.

- 1 + 6 = 7x + 3x \\ 5 = 10x \\  \frac{5}{10}  = x \\  \frac{1}{2}  = x

  • Answer Check by substituting the value of x in the equation.

6 - 7( \frac{1}{2} ) - 7 =  - 6 + 3( \frac{1}{2} ) \\ 6 -  \frac{7}{2}  - 7 =  - 6 +  \frac{3}{2}  \Longrightarrow \sf{You \:  \: can \:  \: change \:  \: sides \:   \: to \:  \: make \:  \: it \:  \: easier} \\ 6 - 7 + 6 =  \frac{7}{2}  +  \frac{3}{2}  \\ 5 =  \frac{10}{2}  \\ 5 = 5 \:  \green{ \checkmark}

The equation is true for x = 1/2.

<h3><u>Answer</u></h3>

<u>\large \boxed{x =  \frac{1}{2} }  \:  \:  \:  \: \green{ \checkmark}</u>

7 0
3 years ago
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