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3 years ago

PLEASE HELP I DONT KNOW

Mathematics

2 answers:

lubasha [3.4K]3 years ago

8 0

Answer:

Step-by-step explanation:

A line limited by the circumference going through the center is called the diameter.

riadik2000 [5.3K]3 years ago

5 0

Answer:

d, diameter

Step-by-step explanation:

radius is half of a diameter, or the distance from the center of the circle to the circumference

circle is a... circle

center is...

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Solve the system y = -x + 7 and y = -0.5(x - 3)2 + 8

guajiro [1.7K]

I believe the answer is (7,0) and (1,6). I hope it's correct :)

6 0

3 years ago

Read 2 more answers

We wish to give a 90% confidence interval for the mean value of a normally distributed random variable. We obtain a simple rando

coldgirl [10]

Answer: $(9.27025,\ 11.12975)$

Step-by-step explanation:

Given : Sample size : n= 9

Degree of freedom = df =n-1 =8

Sample mean : $\overline{x}=10.2$

sample standard deviation : $s= 1.5$

Significance level ; $\alpha= 1-0.90=0.10$

Since population standard deviation is not given , so we use t- test.

Using t-distribution table , we have

Critical value = $t_{\alpha/2, df}=t_{0.05 , 8}=1.8595$

Confidence interval for the population mean :

$\overline{x}\pm t_{\alpha/2, df}\dfrac{s}{\sqrt{n}}$

90% confidence interval for the mean value will be :

$10.2\pm (1.8595)\dfrac{1.5}{\sqrt{9}}$

$10.2\pm (1.8595)\dfrac{1.5}{3}$

$10.2\pm (1.8595)(0.5)$

$10.2\pm (0.92975)$

$(10.2-0.92975,\ 10.2+0.92975)$

$(9.27025,\ 11.12975)$

Hence, the 90% confidence interval for the mean value= $(9.27025,\ 11.12975)$

6 0

3 years ago

How do you use benchmark to estimate 2.81 + 3.72

Luba_88 [7]

Round 2.81 to 2.8 and 3.72 to 3.7. Add both together to get 6.5

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3 years ago

In a random survey of 300 people about the kind of apples they preferred, 178 said they preferred red apples. Based on these res

aliya0001 [1]

Answer:

2670

Step-by-step explanation:

4500/300 = 15

178*15=2670

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3 years ago

Using spreadsheets to Organize Data (PLEASE HELP)

katrin [286]

I can give you the first half!
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2. E2 - money earned on monday, $15
3. D3 - hours worked on tuesday, 3 hrs
4. E3 - money earned on tuesday, $15
5. D4 - hours worked on thursday, 4 hrs
6. E4 - money earned on thursday, $20

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2 years ago