Use the law of cosines to find a:

So to use the given numbers you get:

Which would come out to equal about 35.94
so a=35.9
Answer:
(1;-2)
Step-by-step explanation:
x=-2y-3
2(2y+3)=-6y-9-5
10y=-20
y=-2
x=4-3=1
Answer:
15
Step-by-step explanation:
the answer should be 15 because, if one cup is 120 calories or 8 fluid ounces is 120 calories, divide 120 by 8 so you can find how many calories one fluid ounce is.
The information in the question let’s us solve for A using a ratio:
A / (A + 291) = 2 / 5
5A = 2A + 582
3A = 582
A = 194
Now we can use ratios again to solve for C:
11 / 2 = C / 194
2C = 2134
C = 1067
She needs to complete 8 more paintings. If you multiply 6 by 5, you get 30. Subtract 30 from 38, you would get 8.