HELP PLEASE! whats the answer

sum: 45

count: 15

mean: 3

Step-by-step explanation:

sum the number of times students ate fast food

count the amount of students that took the survey

the average amount of times students went out to eat

45

Step-by-step explanation: just add 1+1,2+2,3+3+3+3,+4,+5,+6+6+6

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

3: 2

step-by-step explanation:

shorter piece is 2: 3, so just reverse it, and you get 3: 2