Let m and j be the current ages of Matthew and Jenny, respectively.
Now, Matthew is 3 times as old as Jenny, so the variables are in the following relation:
In 7 years, both of them will be 7 years older, i.e. their ages will be m+7 and j+7, and Matthew will be twice as old:
Now, remembering that m=3j, we can rewrite the second equation as
So, Jenny is 7 and Matthew is 21 (he's 3 times older).
In fact, in 7 years, they will be 14 and 28, and Matthew will be twice as old.
The answer is (2,-9). Hope i can help.
Answer:I got the pic over here
Step-by-step explanation:
5 you add them all up and then divide by how many number you added
(6+3+2+1+9+9) and then divide by 6
Answer:
width: 15 inches; length: 20 inches
Step-by-step explanation:
The equation tells you the product of width (x) and length (x+5) is 300, so you're looking for factors of 300 that differ by 5.
300 = 1·300 = 2·150 = 3·100 = 4·75 = 5·60 = 6·50 = 10·30 = 12·25 = 15·20
The factors in the last pair on this list differ by 5, so we have ...
- width = 15 inches
- length = 20 inches
