Answer:
or 
Step-by-step explanation:
we have

step 1
Group terms that contain the same variable

step 2
Combine like terms

step 3
Eliminate parenthesis

step 4
Factor the number 

Answer:
Because she is concluding that her class is an accurate representation of the overall school. The sample size in this case is too small and should increase her sample size(the amount of people surveyed) in order to get a better result.
Answer:
9the only correct answer is 9
Answer:
3,781
Step-by-step explanation:
To solve this problem, we will find the area of the whole circle and use that to find teh area of the 60º section.
First, recognize the formula for the area of a circle:
A = 3.14
In this scenario, the radius (<em>r</em>) is 85 feet:
A = 3.14(85
A circle is 360º and we only require the area of 60º. 360º / 60º = 6 so we will divide by 6:
A = 
Finally, we will simplify and round:
A = 3,781
Answer:
Part 26) 
Part 27) 
Step-by-step explanation:
Part 26)
we know that
The length of Alana's hair was 9 3/4 inches
After her haircut, the length was 6 1/2 inches
To find out how many inches did she have cut subtract 6 1/2 from 9 3/4
but first
Convert mixed number to an improper fraction


Find the difference

Convert to mixed number

Part 27)
we have that
Emeril used a total of 7 1/4 cups of flour to make three pastries
He used 2 1/4 cup of flour for the first and 2 1/3 cups of flour for the second
To find out how much cups of flour Emeril use for the third pastry, subtract the sum of the cups of flour used in the first and second pastry from the total cups of pastry used
Let
x ----> number of cups of flour used in the third pastry

but first
Convert mixed number to an improper fraction



substitute




Simplify

Convert to mixed number
