Answer:
3 Pages
Step-by-step explanation:
- Let the pages of economics read = e
- Let the pages of psychology read = p
- Let the total time taken on each instance=t
In the first instance, the student has time to read 50 pages of psychology and 10 pages of economics.
The student could read 30 pages of psychology and 70 pages of economics.
Since the two situations take the same amount of time, we have:
50p+10e=30p+70e
Collect like terms
50p-30p=70e-10e
20p=60e
Divide both sides by 20
p=3e
Therefore, in the time it will take the student to read 1 page of psychology, the student can read 3 pages of economics.
Answer:
D. 5/2
Step-by-step explanation:
20:8
You can divide them by 4 to get 5 and 2
20/4 = 5
8/4 = 2
5/2
Hope this helps!!
<h2>
Answer with explanation:</h2>
Let 
denotes the sample proportion.
As per given , we have
n= 200
Critical value for 99% confidence : 
Confidence interval for population proportion :-
Hence, a 99% confidence interval for the proportion of all individuals that use Firefox: 
The lower limit on the 99% confidence interval = 0.085
Answer:
x = 9
Step-by-step explanation:
55-3x-2x = 10
55 - 5x = 10
-5x = -45
x = 9
