Write using algebra.

If Jim is x years old now, and his sister is twice as old, how old was his sister 7 years ago?

If y varies directly as x, and y is 18 when x is 5, which expression can be used to find the value of y when x is 11? A. Y=5/18 (11) b. Y=18/5 (11) c. Y = (18) (5) / 11d. Y=11 / (18) (5)

Luis jumped 73 inches. Kathy jumped 59 inches How much farther did Luis jump than Kathy? Enter the answer in the box

Which two of the following four statements, labeled A through D, are true statements? A: Statement B is false, but statement C is true. B: Statement C is true, but statement D is false. C: Statement D is false, and statement A is false.

Use the counting principle to determine the number of elements in the sample space. Two digits are selected without replacement from the digits 1, 2, 3, 4, 5, and 6.

Marissa is choosing a four-digit PIN for her ATM card. The first digit must be a digit from 1 through 9. For the other three digits, she can choose any combination of digits 0 through 9, but may not repeat a digit.

Is 11.3 meters the same as 113 cm

Area of triangle with apothem of 5

The ratios of boys to girls in a tennis camp is 3:5. If there are 64 campers, how many are girls? A) 24 B) 32 C) 36 D) 40

Rates unite rates and ratios 50 candles in 4 boxes

46. In the word "percent", the "cent" represents what number?