Answer:
7
Step-by-step explanation:
ab - cd = ?
Put the numbers into the correct variables of the equation.
(5)(3) - (4)(2) = ?
Now multiply 5 and 3 with each other. This leaves you with:
15 - (4)(2) = ?
Now, multiply 4 and 2 with each other. This leaves you with:
15 - 8 = ?
Now, you are able to solve the equation.
15 - 8 = 7
Answer:
The answer is A (-3,4,6).
Step-by-step explanation:
1 Solve for z in -3x-4y+z=-1
z=3x-1+4y
2 Substitute z=3x-1+4y into 2x+y-z=-8
-x-3y+1=-8
3 Substitute z=3x-1+4y into x+8y-z=23
-2x+4y+1=23
4 Solve for x in -x-3y+1=-8
x=-3y+9
5 Substitute x=-3y+9 into z=3x-1+4y
z=-5y+26
6 Substitute x=-3y+9 into -2x+4y+1=23
10y-17=23
7 Solve for y in 10y-17=23
y=4
8 Substitute y=4 into z=-5y+26
z=6
9 Substitute y=4 into x=-3y+9
x=-3
10 Therefore,
x=-3
y=4
z=6
(5x + 3)(5x – 3)
(7x + 4)(7x + 4)
(x – 9)(x – 9)
(–3x – 6)(–3x + 6)
40% of 44000 would be 17600
Answer:
84
Step-by-step explanation:
