1.rachel has 6 pairs of black shoes and 2 pairs of red shoes. what is the ratio of pairs of red shoes to pairs of black shoes?
a. 3: 1
b. 1: 3
c. 4: 1
d. 1: 4
2. in a probability experiment, eric flipped a coin 42 times. the coin landed on heads 28 times. what is the ratio of heads to tails in this experiment?
a. 2/3
b. 2/1
c. 1/2
d. 2/3

  1.  B. 1:3

2.  A.

Step-by-step explanation:

1. Given : Rachel has 6 pairs of black shoes and 2 pairs of red shoes.

Then, the ratio of pairs of red shoes to pairs of black shoes will be :_

Which is written as 1:3.

Hence, the ratio of pairs of red shoes to pairs of black shoes = 1:3

Thus , correct option :  B. 1:3

2. Given : In a probability experiment, Eric flipped a coin 42 times. The coin landed on heads 28 times.

Then, the ratio of heads to tails in this experiment will be :-

Hence, the correct option is : A.

10.416 meters per second

step-by-step explanation:

distance=1 00 meters

time= 9.6 seconds in decimal form or 9 3/5 as a mixed number

average speed= 100/9.6

=10.416 meters per second or 10 52/125 as a mixed number.