MATHEMATICS MIDDLE SCHOOL

How do you simplify: 9x- 3(x-5) ? Please help . due tomorrow

Answers

Answer 1
Answer: 9x - 3x - 15
6x - 15

Hope this helps.

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on a gameboard spinner, martin won a prize on 4 spine and failed to win a prize on 6 other spins. Based on experimental probability, on how many of the next 20 spins should martin expect to win a prize?

Answers

Answer:

4 more

Step-by-step explanation:

Please help thank you guys

Answers

Its D because what you do is list all the numbers from least to greatest, then find the meadian and dot it on the number line. Then do the greatest and the least. After that find the median on the left and right of the median and dot and box the middle 3. So lets say the numbers are
1 2 2 3 3 4 7 . you would dot 1 and 7, then find the median whitch is 3 and dot it after that find the meadian on both sides of the three witch are 2 and 4 and dot them. so then you you make a box like the ones for the middle three and connect the lines. Hope this helps.
We have 15 data points.
1, 4, 4, 5, 5, 5, 6, 6, 7, 7, 7, 8, 8, 9, 11

Let's find the median. (The one in the middle)
Just count by one from each side until they meet in the middle.
The median is 6.

This is represented in the box-and-whisker plot as the line that splits the box. We know that line has to go over 6.

The lowest and highest numbers, or extremes, (1 and 11) should be the dots.

These things might have helped us to make a box-and-whisker plot, but all of our answers have these, so we're out of luck.

The ends of the box should be at what are called quartiles.

The median between the lower extreme (1) and our big median (the second 6) is called our lower quartile.
We find this in the same way that we did the median, by counting in.
Remember to start at your lower extreme on one end but just below the median on the other end.
You will find that the lower quartile is 5.

The median between the upper extreme (11) and our big median (the second 6) is called our upper quartile.
Same way as the first two times, count inwards.
One finger on the upper extreme, and the other just above the median.
And our upper quartile, as you will find, is 8.

Now we just need to look for the box-and-whisker plot with quartiles 5 and 8. (remember, these are the ends of the box)
The correct answer is D.

Extra info:
Alternate names for things:
lower extreme = minimum
upper extreme = maximum
lower quartile = first quartile
upper quartile = third quartile

also: the amount between the extremes is the range.
the amount between the quartiles is the interquartile range.

A movie theater needed 48 popcorn buckets. If each package has 9 buckets in it, how many packages will they need to buy?

Answers

the will need 6 boxes because 9 times 5 is 45 and you need 3 more boxes to make 48 buckets
If they have 48 buckets and each package makes 9 buckets all you have to do is divide 48/9 = 5.3 so all you need is 6 packages because 5.3 isn't sold so 6 or 5 and a small one. 

four friends equally shared the cost of supplies for a picnic.the supplies cost 12.50.how much did they each spend

Answers

3.125 is your answer. I hope this helped.

Write an expression for the sequence of operations described below.triple t, add the result to u, then multiply what you have by v

Do not simplify any part of the expression.

Answers

triple t ā‡’ 3t
add the result to u ā‡’ 3t + u
multiply what you have by v ā‡’ (3t + u)v

Since it is instructed not to simplify, we perform the distributive property of multiplication.

(3t + u)v = 3tv + uv

What is 42789 x 54678

Answers

42789 times 54678
is 2,339,616,942

Show Work:
Calculate 9 x 8, which is 72.
Since 72 is two-digit, we carry the first digit 7 to the next column.

3 Calculate 8 x 8, which is 64. Now add the carry digit of 7, which is 71.
Since 71 is two-digit, we carry the first digit 7 to the next column.

4 Calculate 7 x 8, which is 56. Now add the carry digit of 7, which is 63.
Since 63 is two-digit, we carry the first digit 6 to the next column.


5 Calculate 2 x 8, which is 16. Now add the carry digit of 6, which is 22.
Since 22 is two-digit, we carry the first digit 2 to the next column.

6 Calculate 4 x 8, which is 32. Now add the carry digit of 2, which is 34.
Since 34 is two-digit, we carry the first digit 3 to the next column.

7 Bring down the carry digit of 3.

8 Calculate 9 x 7, which is 63.
Since 63 is two-digit, we carry the first digit 6 to the next column.

9 Calculate 8 x 7, which is 56. Now add the carry digit of 6, which is 62.
Since 62 is two-digit, we carry the first digit 6 to the next column.

10 Calculate 7 x 7, which is 49. Now add the carry digit of 6, which is 55.
Since 55 is two-digit, we carry the first digit 5 to the next column.

11 Calculate 2 x 7, which is 14. Now add the carry digit of 5, which is 19.
Since 19 is two-digit, we carry the first digit 1 to the next column.

12 Calculate 4 x 7, which is 28. Now add the carry digit of 1, which is 29.
Since 29 is two-digit, we carry the first digit 2 to the next column.


13 Bring down the carry digit of 2.

14 Calculate 9 x 6, which is 54.
Since 54 is two-digit, we carry the first digit 5 to the next column.

15 Calculate 8 x 6, which is 48. Now add the carry digit of 5, which is 53.
Since 53 is two-digit, we carry the first digit 5 to the next column.


16 Calculate 7 x 6, which is 42. Now add the carry digit of 5, which is 47.
Since 47 is two-digit, we carry the first digit 4 to the next column.


17 Calculate 2 x 6, which is 12. Now add the carry digit of 4, which is 16.
Since 16 is two-digit, we carry the first digit 1 to the next column.


18 Calculate 4 x 6, which is 24. Now add the carry digit of 1, which is 25.
Since 25 is two-digit, we carry the first digit 2 to the next column.


19 Bring down the carry digit of 2.


20 Calculate 9 x 4, which is 36.
Since 36 is two-digit, we carry the first digit 3 to the next column.

21 Calculate 8 x 4, which is 32. Now add the carry digit of 3, which is 35.
Since 35 is two-digit, we carry the first digit 3 to the next column.

22 Calculate 7 x 4, which is 28. Now add the carry digit of 3, which is 31.
Since 31 is two-digit, we carry the first digit 3 to the next column.

23 Calculate 2 x 4, which is 8. Now add the carry digit of 3, which is 11.
Since 11 is two-digit, we carry the first digit 1 to the next column.

24 Calculate 4 x 4, which is 16. Now add the carry digit of 1, which is 17.
Since 17 is two-digit, we carry the first digit 1 to the next column.

25 Bring down the carry digit of 1.

26 Calculate 9 x 5, which is 45.
Since 45 is two-digit, we carry the first digit 4 to the next column.

27 Calculate 8 x 5, which is 40. Now add the carry digit of 4, which is 44.
Since 44 is two-digit, we carry the first digit 4 to the next column.

28 Calculate 7 x 5, which is 35. Now add the carry digit of 4, which is 39.
Since 39 is two-digit, we carry the first digit 3 to the next column.

29 Calculate 2 x 5, which is 10. Now add the carry digit of 3, which is 13.
Since 13 is two-digit, we carry the first digit 1 to the next column.

30 Calculate 4 x 5, which is 20. Now add the carry digit of 1, which is 21.
Since 21 is two-digit, we carry the first digit 2 to the next column.

31 Bring down the carry digit of 2.

32 Calculate 342312 + 2995230 + 25673400 + 171156000 + 2139450000, which is 2339616942
         
The answer is 2,339,616,942.
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