Answer:
a. Take a grid that shows represents the amount of money Frank has,
Say F,
( shown below ),
b. Since, Marissa has twice as much money as Frank,
So, the amount Marissa has = 2F
If M represents the amount Marissa has,
M = 2F
c. Now, Christina has $20 more than Marissa,
Add 20 to the grid M
d. The below diagram provides enough information to determine the value of the variable m
e. The amount Christina has = M + 20 = 2F + 20
According to the question,
2F + 20 = 100
2F = 80
F = 40
Hence, the amount frank has = $ 40,
Amount Marissa has = 2(40) = $ 80,
Answer:
Give me more information
Step-by-step explanation:
Answer:
Step-by-step explanation:
Using right estimation point simply means to form a bunch of rectangles between the two limits, x =2 and x = 5. and add the areas of all those rectangles.
There must be 6 subdivisions between 2 and 5. so, to do that:
the length of each subdivision is 0.5 units. That also means that the 6 rectangles in between the limits will each have the base length of 0.5 units.
So the endpoints of each subdivision from 3 to 5 will be:
By <em>right </em>endpoint approx<em>, </em>we mean that the height of the rectangles will be determined by the right endpoint of each subdivision, that is, it must be equal to the function value of the first limit.
Note that we have used the right-end-point of the subdivision to determine the height the rectangles.
All that's left to do now is to simply calculate the areas of the each of the rectangles. And add them up.
the base of each of the rectangle is 
and the height is determined in the table above.
Answer:
Cluster sampling
No
Step-by-step explanation:
Missing part of Question
Find:
a) Which type of sample is this?
b) Is it the correct choice ?
Solution:
- Simple random sample is the one in which every individual would have equal chance of being selected.
- Stratified random sample draws simple random sample from the independent sub-groups.
- Systematic sampling is letting every kth individual be in the sample ( k as an integer )
- Convenience sampling is used for example voluntary response or a sub-group from the population.
a)
Cluster sampling was used in our case because one of all the teams were chosen and this entire team is in this sample.
b)
No. This method has limitation of giving us a shortsighted view which lacks the overview on the use of performance-enhancing drugs, we can only use this sample to draw conclusions on the team.
Answer:
The required proportion is 
.
Step-by-step explanation:
Consider the provided information.
The price of a recipe-book was reduced from $24.50 to$17.95.
The original price is 24.50
Reduced price is 17.95.
Let p represents the percent decrease in price of the book.
Now substitute the respective values in the above formula.
Hence, the required proportion is .
