If

, then


. So, in the first gap you can write 5 and in the second you can write -4.
Since

, the minimum value of y is when

. The solution of the last equation is x=-5 and then y=-4 -- these are numbers, which you can write in the third and fourth gaps.
Number of students that chose art = 100-(22+26) = 100- 48 = 52
so percentage of students who chose art = 52%
there are 6 sides to a hexagon
360/6 = 60 degrees
so it will map onto itself at 60, 120, 180, 240, 300 & 360
there are 6 different angles
Option B:
is the correct answer.
Explanation:
The given expression is 
Simplifying the expression, we have,

Factor the equations,
and
,we get,


Substituting these factored expressions in the above expression, we have,

Cancelling the common terms
and
, we get,

Thus, the expression equivalent to
is 
Hence, Option B is the correct answer.
Answer:
At the 5% level, BAOI can infer that the average time to complete does not exceeds 60 hours.
Step-by-step explanation:
From the question we are told that
The population mean is 
The sample size is 
The sample mean is 
The standard deviation is 
The null hypothesis is 
The alternative 
Here we would assume the level of significance of this test to be

Next we will obtain the critical value of the level of significance from the normal distribution table, the value is 
Generally the test statistics is mathematically represented as

substituting values


Looking at the value of t and
we see that
hence we fail to reject the null hypothesis
This means that there no sufficient evidence to conclude that it takes more than 60 hours to complete the course
So
At the 5% level, BAOI can infer that the average time to complete does not exceeds 60 hours.