Answer:
Step-by-step explanation:
n = 10
Mean, m = (32 + 24 + 30 + 34 + 28 + 23 + 31 + 33 + 27 + 25)/10
= 28.7
From the information given,
Standard deviation, s = 1.8
For a confidence level of 95%, the corresponding z value is 1.96.
We will apply the formula
Confidence interval
= mean ± z ×standard deviation/√n
It becomes
28.7 ± 1.96 × 1.8/√10
= 28.7 ± 1.12
The lower end of the confidence interval is 28.7 - 1.12 = 27.58 years
The upper end of the confidence interval is 28.7 + 1.12 = 29.82 years
f(x) = -5x - 4
substitute the value of x = 5 to the equation of the function:
f(5) = -5(5) - 4 = -25 - 4 = -29
Answer: B. f(5) = -29
Answer:
x > 5
Step-by-step explanation:
x-8>-3
Add 8 to each side
x-8+8>-3+8
x > 5
The Perimeter = the distance around the frame. Therefore P=w+w+l+l
or P= 2w+2l
We are given l=15 1/4 and P= 50 2/4
Therefore 50 2/4 = 2w + 2(15 1/4)
50 2/4 = 2w + 30 2/4
Solve for w:
50 2/4 - 30 2/4 = 2w + 30 2/4 - 30 2/4
20 = 2w
20/2 = 2w/2
10 = w
Answer:
I believe it is 11 1/4. Hope I'm right.
Step-by-step explanation:
I multiplied 2*5=10
Then I multiplied 1/4*5= 1 1/4
Then I added 10+1 1/4=11 1/4