Answer:
Step-by-step explanation:
denotes the set of elements in both A and C, which is 
.
denotes the complement of set B, which is the set of all elements that are in the universal set that are not in set B. In this case, this set is 
2x - 3y = 7 and -3x + y = 7..multiply Equation 2 by THREE and add to Equation 1
-9x + 3y = 21...........................watch the y's disappear
-7x........ = 28
x = -4
substitute -4 instead of x in either of the ORIGINAL equations
2x - 3y = 7
2(-4) - 3y = 7
-8 -3y = 7..........add 8 to both sides
-3y = 15
y = -5
im not sure
Answer:
9x-4y-87
Step-by-step explanation:
2x-4y+7x-87
9x-4y-87
The square root of 81 is 9
Answer:
B, C and D
Step-by-step explanation:
dilation is the only transformation that affects the size of the shape, and no transformations affect the shape of the figure.
