What conclusion can be made based on this multiplication problem?

7 × 3 = 21

seven is 3 times the size of 21.
seven is 21 times the size of 3.
twenty-one is 7 times the size of 7.
twenty-one is 7 times the size of 3.

The value of cos 30° is the same as which of the following?

Adele is five years older than timothy. in three years, timothy will be 2/3 of adele’s age. what is adele‘s current age?

Zed is making a centerpiece for his dining room table by putting sand in a cube-shaped vase. the vase is 0.25 meters in length, width, and height. he bought 25 kg of sand. assume the density of dry sand is 1,602 kgm3. what is the volume of the sand that zed purchased? the volume of the sand is approximately m3. enter your answer as the number that correctly fills in the blank in the previous sentence. if necessary, round your answer to six decimal places, like so: 42.536475