Answer:
d=4.
Step-by-step explanation:
160/40=4, therefore d=4.
The answer is B. You add all the numbers together and divide by the amount of numbers you have to find the mean. The missing height is 62 because 54+57+59+63+66+68+70+58=563
563/9 (amount of numbers you have including the missing height) = 63
Answer:
The choice C 31
Step-by-step explanation:

Answer:
cups of crispy cereal.
Step-by-step explanation:



cups of crispy cereal.
(2x-10)/4 = 3x
2x - 10 = 12x
10x = -10
x = -1