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frez [133]
3 years ago
10

Help please this is hard

Mathematics
1 answer:
poizon [28]3 years ago
7 0

Answer:

Step-by-step explanation:

3. z-(-12)=15

z+12=15

-12 on both sides

z=3

4. x-(-7)=-10

x+7=-10

-7 on both sides

x=-17

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help please i'll give brainliest if you give me the answers to all if you scam me your getting reported
LiRa [457]

Answer:

Step-by-step explanation: I just answered for you?

8 0
3 years ago
Select the correct answer from the drop-down menu. consider this population data set: 4, 6, 7, 11, 12, 18, 26, 23, 14, 31, 22, a
elena55 [62]

The correct answer from the drop-down menu is 3.5.

<h3>What is the mean value?</h3>

The mean is the average of the numbers. It is easy to calculate add up all the numbers, then divide by how many numbers in the data set.

Therefore the population mean is the sum of the 12 data set values divided by 12

4 + 6 + 7 + 11 + 12 + 18 + 26 + 23 + 14 + 31 + 22 + 12 = 186.

Therefore the population mean

= 186/12

= 15.5.

The sample mean is given by the sum of the 4 sample values divided by 4

11 + 31 + 22 + 12

Sum = 76.

Therefore the sample mean

= 76/4

= 19.

The sample mean is more than the population mean by

= 19 - 15.5

= 3.5.

To learn more about the mean visit:

brainly.com/question/21577204

8 0
3 years ago
Lisa has a certain amount of money. She spent $39 and has 3/4 of the original amount left. How much money did she have originall
antiseptic1488 [7]
We know that she spent $39, and has 3/4 of the original amount left. Our goal is to find the original amount. We can use the equation. x - 39 = 3/4x. Once we subtract x on the left hand side, we get -39 = -1/4x. Once we multiply -39 by -4, we get 146. She originally had $156.
3 0
3 years ago
8. Find the equation of the line through the origin and point (3,4) Slope = Equation=​
abruzzese [7]

Answer:

y=1\frac{1}{3} x

Step-by-step explanation:

Since the line goes through the origin and is propotinal, we just do y/x

4/3= 1 1/3

y=1 1/3x

CHECK (Using desmos)

7 0
2 years ago
Seventy-five percent of the apples pies were sold today. If 12 apples pie were sold, then how many pies were made today? ​
Dmitrij [34]

Answer:

16 pies

Three-Quarters of 16 is 12, and if you sell 12, then you have a quarter which is 4, which ends up being every quarter which equaled 4

5 0
3 years ago
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