#1 which pair of ratios form a proportion?

a) 5 : 11 and 6 : 12

b) 7 : 13 and 21 : 39

c) 8 : 14 and 24 : 30

d) 10 : 20 and 20 : 30

#2 use a common denominator to determine whether the ratios form a proportion.

6 : 15 and 30 : 80

a) yes. they form a proportion.

b) no. they do not form a proportion.

In the following situation, determine whether you are asked to determine the number of permutations or combinations. then do the calculation how many ways are there to pick a starting five from a basketball team of twelve members? a. permutation; ps - 2520 b. combination; 1c, - 792 c. combination: 2cs - 2520 d. permutation; ps - 95040

Consider circle h with a 3 centimeter radius. if the length of minor arc what is the measure of zrst?

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?