Answer:

So if they meant
then the answer is:
.
The choice this corresponds to is A.
Step-by-step explanation:
The sum of cubes formula for factoring or expanding:

You have I'm assuming they meant:
.
Compare
to
.
You should see in place of
you have
.
You should also see in place of
you have
.





Let's check it for fun.
So we are going to use the distributive property.
We are going to distribute all the terms in the first ( ) to all the terms in the second ( ).
+ 
+ 
Combine like terms:

Simplify the grouping of like terms:

0 times anything is 0:

Answer: 
Step-by-step explanation:
The formula we need to use is:

We know that "T" is the total time for driving and hiking and "x" is the average velocity on the hike.
Knowing that the tourist drives 70 miles along the scenic highway and walk 7-mile walk along the hiking trail, and also knowing that the average velocity driving is 7 times that while hiking, we can conclude that the total time is:

Finally, simplifying the equation, we get that the total time for driving and hiking as a function of the average velocity on the hike, is:

Remark
Let the amount invest = x
(1/3 x) * 5/100 + (1/2 x) * 5.5/100 = 735 Multiply numerators and denominators together on each side of the plus sign.
5x/300 + 5.5x / 200 = 735
Multiply both sides of the equation by 600 to get rid of the denominators.
(5x/300)*600 + (5.5x/200)*600 = 735 * 600
(5x * 2) + 5.5x * 3 = 441000
10x + 16.5x = 441000 Combine the like terms on the left.
26.5 * x = 441000 Divide by 26.5 on both sides.
x = 441000/26.5
x = 16641.51 = invested amount <<<<< answer
Check
1/3 * 5/100 * 16641.51 = 277.36
1/2 * 5.5/100*16641.51 = 457.63
The total = 735 which is what it should be.
Answer:
The interquartile range is also known as midspread and it is the between the first and third quartile (25th and 75th percentile respectively) serving as a robust measure of sample dispersion.
Interquartile range (IQR) = Q3 - Q1
As a measure of variability, it is based on splitting data sets into quartile (four equal portions). The values differentiating these portions are known as the first, second, and third quartile which are represented as Q1, Q2, and Q3, respectively.
Step-by-step explanation:
sorry if wrong