Answer:
43
Step-by-step explanation:
Let's call this number x. The word sum means addition, so we can write x + 21 = 64. When we subtract 21 from both sides, we get x = 43. Hope this helps!
Answer:
Step-by-step explanation:
3n=3
Divide by 3
N=1
Answer:
90 MPH
Step-by-step explanation:
2700 / 30 = 90
Answer:
16 tablespoons and 4 tablespoon
Step-by-step explanation:
Number of all possibilities -

number of codes starting with A -

the probability is