Answer:
B
Step-by-step explanation:
A number increased by 7 means, 7 was added to the number and the result is 15
Find the distances of each plane for the 4 hours, then use the law of cosine.
See attached picture:
In this question we can see
that there is one unknown variable named “y” and one equation. So it is
absolutely possible to find the correct value of the unknown variable “y”. Now
let us check the equation that is given and solve it correctly.
y - 18 = 10
y = 10 + 18
= 28
So the value of the unknown variable “y” is 28. I hope this
is the answer you were looking for and the procedure is clear to you.
