When jeremy surveyed thirty 7th-grade students at the community pool, he found that 2/15 had not read at least one book during july. he knows there are about 200 7th-grade students in his community, so he infers that about 40 of them did not read any books in july. is that a good inference? explain.

He didnt make a good inference, because the ratio is not in proportion to 2/15. The right inference would be 26 students who didnt read any books in July. The sample may be biased since it was limited to those at the pool.

Step-by-step explanation:

I did the assignment on edg :)

f(2x−x2)=−3x2+6x−1

step-by-step explanation:

set up the composite function and evaluate.

f(2x−x2)=−3x2+6x−1

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)