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alukav5142 [94]
3 years ago
7

What is the next three terms for 7, 21, 63

Mathematics
1 answer:
Andrews [41]3 years ago
8 0

Answer:

189, 567, 1701

Step-by-step explanation:

multiply each term by 3.

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How many feet are in 2,241 inches? (1 foot = 12 inches)
77julia77 [94]
Answer: A) 186.75 feet

Step-by-Step Explanation:

1 foot = 12 inches
1 inch = 1/12 foot

Therefore, Inches to Feet :-
= 2241/12
= 186.75 feet
8 0
2 years ago
Read 2 more answers
A physicist examines 28 sedimentary samples for mercury concentration. The mean mercury concentration for the sample data is 0.8
fiasKO [112]

Answer: 0.861

Step-by-step explanation:

The confidence interval for population mean (\mu) is given by :-

\overline{x}\pm t_c\dfrac{s}{\sqrt{n}} , where n=sample size

\overline{x}= sample mean

s=sample standard deviation

t_c= critical t-value (for two tailed )

Let  \mu be the confidence interval for the population mean mercury concentration.

As per given , we have

Sample size : n= 28

degree of freedom = 27   [df=n-1]

Sample mean : \overline{x}=0.863 cc/cubic meter

Sample standard deviation : s= 0.0036

Significance level : \alpha=1-0.98=0.02

Critical two-tailed test value :

t_c=t_{\alpha/2,df}=t_{0.01,\ 27}= 2.473  (Using t-distribution table.)

We assume the population is approximately normal.

Now, the 98% confidence interval for the population mean mercury concentration will be :-

0.863\pm (2.473)\dfrac{0.0036}{\sqrt{28}}\\\\=0.863\pm(0.002)\\\\=(0.863-0.002,\ 0.863+0.002)=(0.861,\ 0.865)

Required confidence interval : 0.861

4 0
3 years ago
What is there difference of 352_158
ycow [4]
352 - 158 = 194.

:-)

I hope I helped you
7 0
3 years ago
A store plans to sell two different game consoles, the Wii and the xbox. The store’s wholesale price for the Wii is $250, and th
Paul [167]

Answer:

idk can you give me brainlist

Step-by-step explanation:

3 0
3 years ago
For which value of c will the equation 2x-5=2x-c have an infinite number of solutions? (1.5 points)
Mariulka [41]
The answer is 6 because it’s 2 times 5=c2x
3 0
3 years ago
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