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Mathematics

2 answers:

Scrat [10]3 years ago

6 0

It terminates <span>9÷16=<span>.5625</span></span>

Gemiola [76]3 years ago

5 0

You are to divide 16 INTO 7: 7/16

____4_3_7_______
16 / 7 . 0 0 0
6 4
-----------
6 0
- 4 8
---------------
1 2 0
- 1 1 2
-----------
8 0
8 0
-------
0

We say this result "terminates" because we found no remainder.

0.123123123.... is an example of a non-terminating fraction.
0.123 123
This fraction is equal to ----------- = --------- = .123123123........
1-0.001 999

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devlian [24]

Answer:

The y intercept is 0 and 3

Step-by-step explanation:

3 0

3 years ago

When we graph a line using slope and y-intercept, the first point that you graph is

k0ka [10]

Answer:

y=mx+b is the formula starting with b say it is 4 you put a dot on 4 on the y axis m is 1/2 you go up 1 right 2 on the 4 points then do the same on the next point you get then you get your line. hope this helps

4 0

2 years ago

A quality analyst of a tennis racquet manufacturing plant investigates if the length of a junior's tennis racquet conforms to th

Burka [1]

Answer:

Confidence interval : $21.506$ to $24.493$

Step-by-step explanation:

A quality analyst selects twenty racquets and obtains the following lengths:

21, 25, 23, 22, 24, 21, 25, 21, 23, 26, 21, 24, 22, 24, 23, 21, 21, 26, 23, 24

So, sample size = n =20

Now we are supposed to find Construct a 99.9% confidence interval for the mean length of all the junior's tennis racquets manufactured at this plant.

Since n < 30

So we will use t-distribution

Confidence level = 99.9%

Significance level = α = 0.001

Now calculate the sample mean

X=21, 25, 23, 22, 24, 21, 25, 21, 23, 26, 21, 24, 22, 24, 23, 21, 21, 26, 23, 24

Sample mean = $\bar{x}=\frac{\sum x}{n}$

Sample mean = $\bar{x}=\frac{21+25+23+22+24+21+25+21+23+ 26+ 21+24+22+ 24+23+21+ 21+ 26+23+ 24}{20}$

Sample mean = $\bar{x}=23$

Sample standard deviation = $\sqrt{\frac{\sum(x-\bar{x})^2}{n-1}}$

Sample standard deviation = $\sqrt{\frac{(21-23)^2+(25-23)^2+(23-23)^2+(22-23)^2+(24-23)^2+(21-23)^2+(25-23)^2+(21-23)^2+(23-23)^2+(26-23)^2+(21-23)^2+(24-23)^2+(22-23)^2+(24-23)^2+(23-23)^2+(21-23)^2+(21-23)^2+(26-23)^2+(23-23)^2+(24-23)^2}{20-1}}$