Lets solve this system of equations using addition.
9x+2y^2-3z^2=132
+ 9y-2y^2+3z^2=867
-------------------------------
9x+9y+0y^2+0z^2=999
9x+9y=999
x+y=111
Now lets break it down into two equations
x=111-y y=111-x <-- Answer
Now we can substitute with much simpler equations to check.
x=111-(111-x)
x=111-111+x
x=x
True
y=111-(111-y)
y=111-111+y
y=y
True
Answer:
(7,2)
Step-by-step explanation:
Multiply the first equation by -3
(x-3y=1) = -3x+9y=-3
Combine like terms with the new equation and the second equation
(-3x+9y=-3) + (3x-5y=11) = 4y=8
Divide each side by 4
4y/4=8/4
y=2
Plug in 2 for y in any equation. It doesn’t matter which one
x-3(2)=1
Distribute
x-6=1
Add 6 to both sides
x-6=1
+6 +6
x=7
Answer:
x = -7
Step-by-step explanation:
Answer:
75% of what number is 24? 32. Yesterday, 8% of the 150 6th graders were late. How many 6th graders were late? ... On a school bus, 22 of the 40 students are in window seats. What percent of the students are at a window seat? 55%. Write as a fraction in simplest form. 0.8%. 1/125.
Step-by-step explanation:
