Answer:
The system x = 4 and y = -x - 1 has one solution
Step-by-step explanation:
x = 4 and y = -x - 1 intersects only once on the graph
Let Sam be (S+8) years while his sister is S years.
S(S+8) = 105
S^2+8S-105 = 0
(S+15)(S-7) = 0
Sam’s sister is 7 years and Sam is 15 years old.
Answer:
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Answer:
miles.
Step-by-step explanation:
Given that a group of hikers walked 
miles along a hiking trail. Another group of hikers walked 
that distance with the first group before turning off onto another trail. Now we need to find about how many miles did the two groups of hikers walk with each other.
To find that we just need to find half of
=
=
=
=
=
Hence final answer is miles.
Eighty million, forty thousand, nine hundred sixty.
