Which of the following proportions are true

1:4 = 2:5

6:9 = 10:12

5:11 = 15:30

2:7 = 4:14

If you opened two Wonka Bars out of 1,000, what percent did you open?

Find the product. a 4 (3 a 2 - 2 a + 1)

Triangle QRS is transformed as shown on the graph. Which rule describes the transformation? R0, 90° R0, 180° R0, 270° R0, 360°

Change the improper fraction to a mixed number. 20/7

Solve the rational equation x divided by 2 equals x squared divided by quantity x minus 2 end quantity, and check for extraneous solutions.

The first person has $15 and saves $1.50 each day. The second person has $55 and spends $4.50 each day. In about how many days will they have the same amount of money? a 7 days b 15 days c 21 days d 12 days

Ten students participated in a raffle to win a computer. There are two new computers being given away and two students will be chosen at random one at a time without replacement. How many possible ways are there to choose the two students?

A random sample of 121 bottles of cologne showed an average content of 4 ounces. It is known that the standard deviation of the contents (i. e., of the population) is 0.22 ounces. In this problem the 0.22 is Select one: a. a parameter. b.

What is the responsibility if a scientist

What is 1/8 x 3/8 and how do you do the problem?