Answer:
11 / 20
Step-by-step explanation:
3/4 - 1/5
You cannot perform this if you have two different denominator.
So multiply both pairs with each other's denominator.
3 × 5 = 15 1 × 4 = 4
4 × 5 = 20 5 × 4 = 20
Now we can perform subtraction.
15/20 - 4/20
15 - 4 = 11
11 / 20
Answer: 42.5 m
Step-by-step explanation:
Split the figure into a rectangle and a triangle.
Find the areas of the rectangle and the triangle seperately and add them together.
Rectangle: 7 x 5 = 35
Triangle: 5 x 3/2 = 7.5
35+7.5= 42.5m
Answer:
Around 2397 Americans must be surveyed to get a margin of error of 2%.
Step-by-step explanation:
We are given the following in the question:
Proportion of US residents who thinks marijuana should be made legal = 48%
We have to construct a 95% confidence interval.
Margin of error = 2% = 0.02
Formula for margin of error =
Putting values, we get,
Thus, around 2397 Americans must be surveyed to get a margin of error of 2%.
Answer:
24 students per mile
Step-by-step explanation:
Given in the question,
Length of rectangle for building university = 75 miles
Width of rectangle for building university = 25 miles
Total area:
Length x Width
= 75 x 25
= 1875 miles²
Only 70% of the buildings at this university are used for instruction
70% of 1875 miles²
70/100 x 1875
= 1312.5 miles²
32,125 students are enrolled at this university
So,
1312.5 miles² = 32,125 students
1 mile = 32,125/1312.5
= 24 students per mile
Answer:
We use both median and mean to give us a sense of what the 'average' or middle of a group looks like. It may be the case that the median and mean of a given set of data are very similar. Take the data set above, for example. ... When values are evenly distributed, the mean will be similar to the median
Step-by-step explanation:
