11) 39 2/9
12) 21 1/10
13) 22 3/8
14) 6
15) 10 5/12
16) 5 19/24
17) 6 2/3
18) 16 1/24
19) 15 19/24
20) 10 7/8
Answer:
736
Step-by-step explanation:
(2*(8*8))+(2*(8*19))+(2*(19*8))=A
The measure of RST is 48 degrees
Answer:
x=25 degrees
Step-by-step explanation:
The square in the corner says that the angle is a right angle, meaning that it is equal to 90 degrees. Since one part of the angle is 65 degrees, x must be complementary, meaning it must add on to 65 to equal 90. The only value which can fulfill this is 25. 25+65 is equal 90.
Boom.
substitute x=3+12y into -2x-y=3
-2(3+12y) -y=3
distribute
-6-24y-y=3
combine like terms
-6 -25y =3
add 6 to each side
-25y =9
divide by -25
y =-9/25
now substitute into x=3+12y
x=3+12y
x=3+12(-9/25)
x=3-108/25
x= 75/25 -108/25
x=-33/25
Answer: x=-33/25, y=9/25
