MATHEMATICS MIDDLE SCHOOL

If you multiply me by 2, I become a number greater than 20 and less than 40 who am I

Answers

Answer 1
Answer: well there are many numbers, starting from 11 though 19.
11 times 2 = 22    12 times 2 = 24   13 times 2 = 26    14 times 2 = 28    15 times 2 = 30      16 times 2 = 32     17 times 2 = 34    18 times 2 = 36     19 times 2 = 38
so basically from any number from 11 through 19.
Hope i helped! :D

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Please help! Due today!Solve the given system.

A)
x + y = -6
x - y = 2


B)
y = x + 20
y = 6x

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The answer is in the file

In the equation y=4x, which of the following explains the unit rate?

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Is this multiple choice? 4x would be the slope, so thats the unit rate.
y = kx

k would represent the unit rate, or constant of variation, therefore, 4 would be the unit rate. 

Answer: 4

a hotel offers to activity packages. One cost $192 and includes three hours of horseback riding and two hours of parasailing. The second cost to $213 and includes two hours of horseback riding and three hours of parasailing. What is the cost for 1 hours of each activity

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3h + 2p = 192 -->(-2) 2h + 3p = 213 -->(3) ------------- -6h - 4p = - 384 (result of multiplying by -2) 6h + 9p = 639 (result of multiplying by 3) --------------add 5p = 255 p = 255/5 p = 51 now sub 51 in for p in either of the original equations to find h 3h + 2p = 192 3h + 2(51) = 192 3h + 102 = 192 3h = 192 - 102 3h = 90 h = 90/3 h = 30 check... 3h + 2p = 192 2h + 3p = 213 3(30) + 2(51) = 192 2(30) + 3(51) = 213 90 + 102 = 192 60 + 153 = 213 192 = 192 (correct) 213 = 213 (correct) 1 hr of horseback riding (h) costs $ 30 1 hr of para-sailing (p) costs $ 51
The first part of the math question is 64.3 and I think for the second part of the question as far as going parasailing is 71

I need help please thank you

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-4 is the negative and 3 is the positive if I see correctly. 

The school department made $2,142 on ticket sales for 3 nights. Each ticket costs $7. How many tickets did they sell each night?

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they sold 21 tickets each night

Which of the following systems of inequalities would produce the region indicated on the graph below

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Answer:

option D

Step-by-step explanation:

In the given graph 4 lines have been used.

(1)  First one is x = 0

(2) second is y = 0

(3)  Third line is y = -x + y

(4) Fourth line is y = x + 2

Now we have to tell the inequalities which form the colored area.

(1) y axis is a solid line with colored area on the right side so y ≥ 0 is the inequality.

(2) x axis is a solid line with colored area upwards so x ≥ 0 is the second inequality.

(3) Colored area is below the solid line y = -x + y so inequality will be y ≤ ( -x +4 ).

(4) Colored area is below the dotted line y = x + 2 so the inequality representing the colored area will be y< x + 2

System of inequalities will be x ≥ 0, y ≥  0, y < x + 2 and y ≤ (-x + 4)

Therefore, option D is the answer.

Answer: D

Step-by-step explanation:
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