Answers:
<u>Reduce:</u>
Here we gave to simplify the expressions:
9) 
Grouping similar terms:
Applying common factor 
in the first parenthesis and common factor 
in the second parenthesis:
This is the answer
11) 
Rearranging the terms:
Applying common factor 
in the first parenthesis and common factor 
in the second parenthesis:
This is the answer
<u>Multiply:</u>
19) 
Multiplying both fractions:
Dividing numerator and denominator by 3 and simplifying:
This is the answer
21) 
Operating with cross product:
Grouping similar terms and factoring:
This is the answer
<u>Divide:</u>
29) 
Simplifying:
This is the answer
33) 
Factoring numerator and denominator:
Simplifying:
This is the answer
37) 
Applying the distributive property in numerator and denominator:
Grouping similar terms and factoring by common factor:
Dividing by 
in numerator and denominator and simplifying:
This is the answer
Answer:
Step-by-step explanation:
Given that x = no of movies high school students watched is N(6.8, 1.8)
Sample size = 36 and hence std error = 1.8/6 = 0.3
(two tailed test)
Mean difference = 6.2-6.8 = -0.6
Test statistic z = -0.6/0.3= -2
p value = 0.02275
Since p <0.05 we reject H0.
There is evidence to show that college students watch fewer movies a month than high school students
The temperature in London at 2pm is 14°C
To do this, we're going to use the order of operations (PEMDAS):
P - Parentheses
E - Exponents
M - Multiplication
D - Division
A - Addition
S - Subtraction
First let's do parentheses, there isn't anythig in parentheses we need to simplify, so we can skip this step.
Next let's look for exponents. I see we have a 
so let's replace that with 
:
Now let's look for multiplcation. We know that things that are right next to eachother in parentheses represent multiplcation, so let's simply this more:
And now we're left with a simple problem we know how to solve.
Answer: 
Hope this helps!
The answer to this question is 8.86666666667
