Answer:
x+3
Step-by-step explanation:
21=7x3. Hence answer is 3
Answer:
y = 16
Step-by-step explanation:
you can see it this way, x = -(1/2)y² is just a horizontal parabola opening to the left-hand-side, the -1/2 is just a stretch transformation of the parent function x = y², but as much as it stretches, their vertex is the same, at the origin.
Answer:
The population of Detroit in 1970 was 1,431,905 people.
Step-by-step explanation:
Take the number 743,204 and add the number 688,701.
Answer:
81 cents
Step-by-step explanation:
11 cents + 30 cents (3 dimes, 10 cents each) + 15 cents (3, 5 cent coins) + 25 cents (1 quarter, 25 cents) = 81 cents