Answer:
x=20
Step-by-step explanation:
4x +10 = 90
-10 from both sides
that gives you 4x=80
80 divided by 4 gives you 20=x
Answer:
it b
Step-by-step explanation:
The third option is the right one. A standard linear equation is represented by y=mx+c where m is the slope and c is a constant. The point (2,-4) represents (x,y). If you substitute the x value (2) in each of the equations:
For the first choice, you get y= 6 so it's wrong
For the second choice, you get y= -2 so it's wrong as well
For the third choice, you get y= -4. This is the right answer
For the last choice, you get y= 4 which is wrong
Hope this helps, let me know if you have any questions
Answer:
D. 12
Step-by-step explanation:
D is the closest answer. -2 multiplied by a -1.8 is a +3.6. Then, you add 8 to 3.6 and you will get 11.6. Therefore, the answer you will put is D or 12
Answer:
x = 4 and y = 1
Step-by-step explanation:
3x+2y=14
2x-4y=4
We can solve them by canceling out one variable so we only have one variable left. Let's cancel out y by doubling the first equation. We get:
6x + 4y = 28
add that on to the second one and we get:
8x = 32
x = 4
We plug in x and get that:
y = 1
So in the end we get
x = 4 and y = 1
