Area larger circle: 3.14 x 5.25^2 = 86.55
area of smaller circle: 3.14 x 2.25^2 = 15.90
86.55 - 15.90 = 70.65 ( round answer as needed)
For this case, the first thing we must do is define a variable:
x: number of hours
y: number of trials
We write the equation that represents the problem:
y = (25/4) x
For 35 essays we have:
35 = (25/4) x
Clearing x:
x = 5.6 hours
Answer:
it will take him to grade 35 essays about:
x = 5.6 hours
the constant of this variation is:
25/4 essays / hour
Answer:
20
Step-by-step explanation:
g(3)= 3²+4·3-1
9+4·3-1
9+12-1
21-1=20
Answer is 31 1/6
(correct me if wrong)
