1- the answer is b and d 2- the answer is a and b 3- the answer is b
Answer:
A: y=-2/3x + 3
B: y=x-2
solution: (3,1)
Step-by-step explanation:
Answer: -42
Step-by-step explanation: 2*2 matrices are easy to find the determinant with. Its just ad-bc, so (5*-2)-(4*8), which is -42
They can be a variety of dimensions but to find volume you multiply length*width*height= volume. So the dimensions can be 2 by 2 by 3.
6x - 3y = 15.....multiply by 4
7x + 4y = 10....multiply by 3
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24x - 12y = 60 (result of multiplying by 4)
21x + 12y = 30 (result of multiplying by 3)
---------------add
45x = 90
x = 90/45
x = 2
6x - 3y = 15
6(2) - 3y = 15
12 - 3y = 15
-3y = 15 - 12
-3y = 3
y = -3/3
y = -1
solution is (2,-1) <==
