Answer:
42 students
Step-by-step explanation:
70% of 100 students is 70 so 70 times 60%=4200. 4200/100=42
C = 2 x pi x r
divide each side by 2 x pie to get r by itself.
45/(2(3.14)) = r
r = 7.17
Answer:The number of words that she would still have to type to finish her essay is 1000
Step-by-step explanation:
Karen is typing a 4,000 word essay. She can type at about 30 words per minute. This means that if her rate remains constant, the total number of minutes that it will take her to finish would be
4000/30 = 133.33 minutes.
If she types for 45 minutes on Monday, it means that the total number of words that she typed on Monday would be
45 × 30 = 1350 words
If she types for 55 minutes on Tuesday, it means that the total number of words that she typed on Tuesday would be
55 × 30 = 1650 words
Total number of words typed on Monday and Tuesday would be
1350 + 1650 = 3000 words
The number of words that she would still have to type to finish her essay would be
4000 - 3000 = 1000 words
=
Multiply both sides by 12, so that we get rid of the fraction in x.
12 · (x+3)/12 = 2/7 · 12
Simplify.
x + 3 = 24/7
Then, subtract 3 from both sides, so that "x" gets isolated.
x = 24/7 - 3
Turn "3" into an improper fraction so that we could find the value of x easier.
3 = 21/3
So :
x = 24/7 - 21/7
Simplify.
x = 3/7
~Hope this helps!~
