Four friends each fipped a coin different numbers of times.
•Alice got heads 75% of the time
•Mary got heads 8 out 10 times.
•Sarah got heads 17 out of 20 times.
•Ellen got heads 3/5 of the time.
Who had the greatest percentage of heads?

Sarah

Step-by-step explanation:

Alice: 75%

Mary: 80%

Sarah: 85%

Ellen: 60%

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb

a. 12.5 kg

step-by-step explanation:

f = ma

so

m = f/a = (2500 n)/(200 m/s²) = 12.5 kg

1 n = 1 kg·m/s²