Answer:
25 is the answer
Step-by-step explanation:
Answer:
4.8 and 5.2
Step-by-step explanation:
5+.2=5.2 5-.2=4.8
Hopes this helps!
Answer:
Step-by-step explanation:
The confidence interval for population mean is given by :-
Given : Sample mean : hours
Standard deviation hours
Sample size : n=90, which is a large sample(n<30), so we use z-test.
Significance level:
Critical value :
Then , the confidence interval for population mean will be :-
Hence, the 90% confidence interval for the mean life of all light bulbs of this type. is
<h3>
Answers: integer and rational number</h3>
Explanation:
The set of whole numbers is {0,1,2,3,4,...} which consists of positive values and 0. So we can cross "whole numbers" off the list since -5 is negative.
The set of integers is {..., -3, -2, -1, 0, 1, 2, 3, ...} which now considers the negative whole numbers. The value -5 is in this list. So -5 is an integer.
It's also a rational number because -5 = -5/1 showing it is a fraction or ratio of two integers.
Answer:
Surface area = 90 cm²
Step-by-step explanation:
Given net of the rectangular prism shows the dimensions as,
Length = 5 cm
Width = 5 cm
Height = 2 cm
`Expression for the surface area of a rectangular prism = 2(lb + bh + hl)
Here, l = length
w = width
h = height
By substituting the values in the expression,
Surface area = 2(5×2 + 5×2 + 5×5)
= 2(10 + 10 + 25)
= 90 cm²