The interval notation is 
Explanation:
The inequality is 
Let us complete the square, we get,

Simplifying, we have,


Adding both sides of the equation by 11, we get,

Since, we know that for
, if n is even then ![-\sqrt[n]{a}](https://tex.z-dn.net/?f=-%5Csqrt%5Bn%5D%7Ba%7D%3Cu%3C%5Csqrt%5Bn%5D%7Ba%7D)
Thus, writing the above expression in this form, we get,

Also, if
then
and 
Then ,we have,
and 
Solving the inequalities, we get,
and 
Merging the intervals, we have,

Hence, writing the solution in interval notation, we have,

Therefore, the answer is 
Answer:
Step-by-step explanation:
The answer would be a dot plot hope this helps
Answer:
Test:
< 20 with normal distⁿ
Hypothesis test:
H0:
20 (Null Hypothesis, H₀ :
= 20 is also correct)
H1:
< 20 (Alternative Hypothesis, also called H₁)
This is lower tailed test.
Since sample is large, sample standard deviation can be taken as an approximation of population standard deviation.
x = 19.3
= 11.1
n = 444
significance level,
= 0.05 (If no value is given, we take level of 0.05)
Test statistic 

= - 1.33
The attached files contains additional information
Answer:-7c(7d+1)
Step-by-step explanation:
factor -7c out of -49cd-7c
(factor the expression)
Answer:
92
Step-by-step explanation:
x= the ideal mark for his third test
100 + 63 + x/3 = 85
163+x=85x3
163 + x = 255
x=92
He would need to get at least a 92 to have the 85 average.