Why can you multiply or divide both terms of a ratio by the same number without changing the value of the ratio

Solve the equation: h/9 = 7. A. h = 1 2/7 B. h = 63 C. h = - 63 D. h = 7/9

Find the average of 10 18 and23

The mean age of a dance troupe is 14.2 years. A 7-year-old sibling is invited to join the troupe. How does the sibling's age affect the mean? A. The new mean age will be 10.6 years. B. The new mean age will be greater than 14.2 years. C.

The function y = - 16t2 + 224 models the height y in feet of a stone t seconds after it is dropped from the edge of a vertical cliff. How long will it take the stone to hit the ground? Round to the nearest hundredth of a second.

A bag contains 12 red marbles, 5 yellow marbles, and 15 green marbles. How many additional red marbles must be added to the 32 marbles already in the bag so that the probability of randomly drawing a red marble is? Select your answer. 13 18 28 32 40

Jenna bought a gallon of milk at the store for $3.58. About how much change did she recevie from $20 bill?

Which shows a difference of squares? 10y2-4x2 1672-x2 8x² - 40x+25 64x2-48x+9

The following is a geometric sequence. Find the next number in this sequence. 1, - 2, 4

Tamyra is making four cookies and has exactly four chocolate chips. If she distributes the chips randomly into the four cookies, what is the probability that there are no more than two chips in any one cookie?

Jessica had baseball cards she gave 3 to her friends she now has 9 baseball cards left how many baseball cards did she have to start with