Answer:
Ralph's current age is 18.
Step-by-step explanation:
Let r and s represent the current ages of Ralph and Sara respectively. Our task here is to determine r, Ralph's age now.
If Ralph is 3 times as old as Sara now, then r = 3s.
Six years from now, Ralph's age will be r + 6 and Sara's will be s + 6. Ralph will be only twice as old as Sara will be then. This can be represented algebraically as
r + 6 = 2(s + 6).
We now have the following system of linear equations to solve:
r + 6 = 2s + 12, or r - 2s = 6, and r = 3s (found earlier, see above).
r - 2s = 6
r = 3s
Substituting 3s for r in r - 2s = 6, we get 3s = 2s + 6, or s = 6. Sara is 6 years old now, meaning that Ralph is 3(6 years), or 18 years old.
Ralph's current age is 18.
Answer:
12x+4
Step-by-step explanation:
when simplified you would get 12x + 4
The first box is "none of these" since it is not a vertical angle, is not an adjacent angles, and is not a linear pair, the second box is vertical angles
Answer
points P , Q , and R lie in the same plane A
Step-by-step explanation:
This tells you that all 3 points are in the same plane, that plane again is A
Answer: 0.625 pound
Explanation:
1 pound = 8 people,
y pound = 5 people
Cross multiply to get
1 x 5 = 8y
5 = 8y
y = 5/8 = 0.625 pounds
Step-by-step explanation:
