699 is closet because as you subtract every number from 750, the smallest answer given is the closest to the number you started with.
Times -7 by everything in the parentheses. so
-7 times 5y=-35y
-7 times -2u=14u
-7 times -5 = 35
therefore 35y+14u+35
x+3x+3x=21
7x=21
x=3
3, 9, 9=21
the answers are 3, 9, and 9
Answer:

Step-by-step explanation:
We know two sides and the angle between the sides, so we can use the Law of Cosines. Recall that the Law of Cosines states that:
, where a and b are the sides and C is the angle in between.
Let's substitute 115 for a, 178 for b, and 41 for Angle C.
Thus:



