9514 1404 393
Answer:
A
Step-by-step explanation:
It is usually sufficient to look at one section of the graph to answer a question like this. Often the best choice is the section that has a solid dot at the end of the curve. Here, that is the right section.
The left end of the right section is at x=-2, so that part of the function is defined for x ≥ -2. The line to the right has a positive slope, so the coefficient of x will be positive.
Only one answer choice has a positive x-coefficient for x ≥ -2.
Answer:
5
Step-by-step explanation:
→ Let x = √20 + √20 .....
x
→ Square both sides
x² = 20 + √20 +√20 + √20
→ Replace √20 +√20 + √20 with x
x² = 20 + x
→ Move everything to the left hand side
x² - 20 - x = 0
→ Factorise
( x + 4 ) ( x - 5 )
→ Solve
x = -4 , 5
→ Discard negative result
x = 5
Answer:
11sqrt(33)
------------
9
Step-by-step explanation:
(11/3)^(3/2)
Apply the cube to inside:
(11^3/3^3)^(1/2)
Recall (x^3)^(1/2)=sqrt(x^3)=sqrt(x^2)×sqrt(x)=x×sqrt(x)
So we have:
11sqrt(11)
------------
3sqrt(3)
Rationalize denominator by multiplying top and bottom by sqrt(3):
11sqrt(11)sqrt(3)
------------
3sqrt(3)sqrt(3)
=
11sqrt(33)
------------
3(3)
=
11sqrt(33)
------------
9
Answer:
95% confidence interval for the mean time spent on housework per week by all married women.
( 26.66 , 32.94)
Step-by-step explanation:
<u><em>Step(i)</em></u>:-
Given random sample size 'n' = 20
Mean of the sample (x⁻ ) = 29.8 hours
Standard deviation of the sample (S) = 6.7
Given Margin of error = 3.14
<u><em>Step(ii):</em></u>-
95% confidence interval for the mean is determined by
We know that margin of error is determined by
Now 95% confidence interval for the mean time spent on housework per week by all married women.
( 26.66 , 32.94)
Answer:
Im pretty the answer is c/m
Step-by-step explanation:
