Step-by-step explanation:
-1 / 2 + x = -21 /4
x = -21/4 + 1/2
x = (-21 + 2)/4
x = -19/4
Answer:
x = 3, y = 4 and z = -5.
Step-by-step explanation:
Use the elimination method:
-3x + 2y + z = -6...........(1)
x + 3y + 2z = 5..............(2)
4x + 4y + 3z = 13..........(3)
Multiply the first equation by -2:
6x - 4y - 2z = 12 Add this to equation (2):
7x - y = 17...........(4)
Now Multiply equation (2) by 3 and equation (3) by -2
3x + 9y + 6z = 15 ............(5)
-8x - 8y - 6z = -26............(6) Adding (5) + (6):
-5x + y = -11..........(7)
Now Add (7) and (4):
2x = 6
x = 3.
Now substitute for x in (4):
7(3) - y = 17
-y = 17 - 21 = -4
y = 4.
Finally substitute for x and y in equation (3) to find z:
4(3) + 4(4) +3z = 13
3z = 13 - 12 - 16 = -15
z = -5.
Answer:
- See the picture, it explains the correct choice is C
Step-by-step explanation:
- a) Line F′G′ is the original line. False
- b) Line F′G′ passes through the origin. False
- c) Lines FG and F′G′ are parallel to each other. TRUE
- d) Lines FG and F′G′ are perpendicular to each other. False
Solve your equation step-by-step.
2s+s+12=132
Simplify both sides of the equation.
2s+s+12=132
Simplify:
3s+12=132
Subtract 12 from both sides.
3s+12−12=132−12
3s=120
Divide both sides by 3.
3s/3 = 120/3
s=40
Answer:
45cm
Step-by-step explanation:
Since they are simliar, they are proportional.
SO, you can do AC/XZ = BC/YZ
You can also see that XZ is 5 times larger than AC
SO multiply BC by 5.
