Answer: y=6, x=2
Step-by-step explanation:
Substitute x=12-y/3
Isolate y, then you get 6 is y
x=12-3/3
x=2
You would make the fractions improper, multiply then simplify. The answer is 10. (:
1/2•(2p-6)(p+1)
1/2•(2p^2+2p-6p-6)
1/2•(2p^2-4p-6)
p^2-2p-3
Answer:
Daniel is 21 years old
Step-by-step explanation:
Let
R ---> Rick's age
M ---> Mike's age
L ---> Larry's age
E ---> Ed's age
D ---> Daniel's age
we know that
The sum of their ages is 271
so
----> equation 1
Rick is 5 times the age of Mike
so
----> equation 2
Mike is half the age of Larry
so
----> equation 3
----> equation 4
----> equation 5
substitute equation 2, equation 3, equation 4 and equation 5 in equation 1
simplify
-----> equation 6
substitute equation 2 and equation 3 in equation 6
solve for M
Find the value of R (equation 2)
Find the value of D (equation 5)
therefore
Daniel is 21 years old