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sashaice [31]
3 years ago
9

HELPPP

Mathematics
1 answer:
qwelly [4]3 years ago
7 0

Answer:

1.

Step-by-step explanation:

JUST SOLVE IT THEN YOU GOT THE ANSWERIVE SOLVED THIS DONTWORRY

<h2>#CARRYONLEARNING!</h2>

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How many ways can four people (A, B, C, D) sit in a row at a move theater if C and D must sit next to each other?
Novay_Z [31]

Answer:

24 ways in four people.

6 0
3 years ago
Please Help!!!
Leni [432]
<h2>Answer : (2.67, 3.53)</h2><h2></h2>

Step to step explanation:

Confidence interval for mean, when population standard deviation is unknown:

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

, where \overline{x} = sample mean

n= sample size

s= sample standard deviation

t_{\alpha/2} = Critical t-value for n-1 degrees of freedom

We assume the family size is normal distributed.

Given, n= 31 , \overline{x}=3.1, s= 1.42 ,

\alpha=1-0.9=0.10

Critical t value for \alpha/2=0.05 and degree of 30 freedom

t_{\alpha/2} = 1.697  [By t-table]

The required confidence interval:

3.1\pm ( 1.697)\dfrac{1.42}{\sqrt{31}}\\\\=3.1\pm0.4328\\\\=(3.1-0.4328,\ 3.1+0.4328)=(2.6672,\ 3.5328)\approx(2.67,\ 3.53)

Hence,  the 90% confidence interval for the estimate = (2.67, 3.53)

6 0
3 years ago
If the line segment AB is on a number line, and point A is at 6 and Point B is at 13, then the length of AB is ____.
Katarina [22]

Answer:

7

Step-by-step explanation:

The length of AB is the distance between A and B which is B-A -> 13-6= 7

3 0
2 years ago
Which function below is the inverse of f(x) = 7x-1/2
GaryK [48]
F(x)=7x-1/2
 Add the half to the other side afeterreplacing f(x) with a zero
 1/2=7x divide by 7
7/2=x, when y=0
4 0
3 years ago
A pack of six cans of coffee cost $12. How much would 19 cans ofcoffee cost?
ch4aika [34]
Answer: $38

Explanation: To find the answer, first of all we need to find out how much one can costs. We can do this by doing 12/6 and we discover that 1 can costs $2. We then do 19(2) to find the price of 19 cans and find out that it is $38. Hope this helped!
7 0
3 years ago
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