Evaluate the expression for
x= 13, y = 7:
y + 5
Enter the correct answer.
2 answers:
Answer:
Step-by-step explanation:
The answer is 12 because the x does not matter, due to the fact that there is no x in the equation. Hence forth, the answer is 12, because it is 7+5
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Answer:

Step-by-step explanation:
Given Data,
Q=23000 J
c=4.184 J/g °c
Δt= 68 °c
m=?
By using this equation,
Q=mcΔt

He is correct but he might be doughting him self
90°/right angle I believe
Step-by-step explanation:
hope it helps you......