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Sunny_sXe [5.5K]
3 years ago
15

I really need help with number 4. Please help me out!

Mathematics
1 answer:
Zina [86]3 years ago
7 0
So " the line of best fit " would be 5(h) to 200(m) .
Which would also be 5:200 .
So after you can divide, so 5/5 would be 1 and 200/5 would be 40.
So it would be 1 to 40 (1:40).
The equation would be 40x. 
If I helped please mark as brainliest . Thanks .

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Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation i
Mnenie [13.5K]

Answer:

The population mean = sample mean = x`= 67.5

Population standard deviation = 13.369

Sample standard deviation= 4.225

Step-by-step explanation:

AS the population mean is not given we will calculate it from the sample.

The mean of the sampling distribution is equal to the population mean .

The sample mean is calculated by

x`= ∑x/n= 75,+ 62, +69,+65,+66,+64, +67,+70,+74 + 63/10

x`=675/10= 67.5

The standard deviation of the sample is equal to

u = σ/ √n   where σ is the population standard deviation and n is the number of observations.

Calculating the sample mean

s= √∑xi²/n- (∑x/n)²

s= √(45741/10)- (675/10)²

s= 4.2249

σ= u*√n= 4.229 *√10

σ=13.360

3 0
2 years ago
All of them no words<br> extra points coming
KATRIN_1 [288]
6x + 9 < 3             3x - 8 > 13
6x < 3 - 9              3x > 13 + 8
6x < - 6                 3x > 21
x < -6/6                   x> 21/3
x < -1                      x > 7
solution is : x < -1 or x > 7
====================
4x + 5 > 25
4x > 25 - 5
4x > 20
x > 20/4
x > 5
===================
5 - 2x > = 27
-2x > = 27 - 5
-2x > = 22
x < = -22/2
x < = -11
==================
-2 < = x - 7 < = 11
-2 + 7 < = x - 7 + 7 < = 11 + 7
5 < = x < = 18

6 0
3 years ago
Read 2 more answers
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amm1812
193.75 miles cause 7.75 * .5 = 3.875 and 3.875* 50 = 193.75
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She started with 17 pieces of candy
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28 6500 as a decimal
algol [13]

Answer:

.0043076923076923

Step-by-step explanation:

7 0
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