Answer:
Step-by-step explanation:
Information given
represent the sample mean for the sample
population mean (variable of interest)
s=4.9 represent the sample standard deviation
n=8 represent the sample size
Confidence interval
The confidence interval for the mean is given by the following formula:
(1)
the degrees of freedom are given by:
Since the Confidence is 0.95 or 95%, the value of 
and 
, and the critical value for this cae would be 
Now we have everything in order to replace into formula (1):
Answer:
Given - (a-b)²=7
(a²+b²) =29
To find - ab
Solution -
( a- b) ^2 = 7
(a^2 + b^2) = 29
Expanding the bracket by using identity
a^2 + b^2 -2ab = 7
29 - 2ab = 7 (given a^2 + b^2 = 29 )
-2ab = 7 -29
-2ab = (-22)
ab = (-22) /(-2)
ab = 11
A = 1/2(b X h)
20.025 = 1/2(8.9 X u)
20.025*2/1= 1/2 * 2/1(8.9 x u)
40.05 =8.9u
40.05/8.9 = 8.9u/8.9
u = 4.50
Check
A = 1/2(b X h)
A = 1/2(8.9 X 4.5)
A = 1/2(40.05)
A = 20.025 in²
Answer:
x = -5.39
Step-by-step explanation:
x + (−2.4) = −7.79
x = −7.79 + 2.4
x = -5.39
First lets find the absolute value of each of these numbers. The absolute value is ALWAYS positive. Lets do it:-
|-10| = 10
|-8| = 8
|-4| = 4
|8| = 8
So the greatest number of these all is 10, so 10 is the greatest number in this set of integers by the absolute value.
Hope I helped ya!!
