Christina used 21 centimeters of tape to wrap 3 presents. How much tape will Christina need in all if she has to wrap 5 presents? Solve using unit rates.

35 cm

Step-by-step explanation:

(21/3)(5) = 35 cm

21 cm/3 presents = 7 cm per present

7 cm x 5 presents = 5 cm

given the equation is 8+9z=-6, the first step would be to subtract the 8 from both sides:

8+9z-8=-6-8

since 8 minus 8 = 0, this would cancel out the 8. and since -6 minus 8 equals -14, the equation would look like this

9z = -14

answer by jkismyhusbandbae:

a) how close a measured value is to the actual (true) value.

  measure of length.   there are 12 inches in a foot, and 36 inches in a yard.   one inch is exactly 2.54 centimeters.

accuracy is how close something is to an actual answer but it is not exactly correct.