Answer: the 4th boy is 11
Step-by-step explanation:
Let's denote the age of the boys as: x₁, x₂, x₃, x₄.
Then,

Multiply both parts of the equation by denoting by 3:
x₁+x₂+x₃=15(3)
x₁+x₂+x₃=45
Hence,

Multiply both parts of the equation by denoting by 4:
45+x₄=14(4)
45+x₄=56
45+x₄-45=56-45
x₄=11
Answer:
Step-by-step explanation:
I think you meant, "what is the value of h(10)." If that's the case, then
h(10) = 6 - 10 = -4
Answer:
12 3/20 is the simplest form
I think it has 2 solutions
Answer:
3 times 7 = 21
Step-by-step explanation: