Answer:
I'm pretty sure it's dark blue. It says below so that implies negative.
1. The correct statement is the first one, which is: <span>Add the two equations, solve for y, and then substitute –1 for y to find x.
</span>
2. Therefore, you have the following system of equations:
<span>
4x+8y=20
-4x+2y= -30
3. When you a</span>dd the two equations, and clear the variable "y", you obtain:
10y=-10
y=-1
4. Now, you must substitute -1 for y (y=-1) to find x, as below:
4x+8y=20
4x+8(-1)=20
4x-8=20
4x=20+8
4x=28
x=28/4
x=7
10 1/2 is the answer.
Steps:
Change the fraction to improper fractions.
Multiply
Reduce
Change to proper fraction
Steps(Another Way):
Change the fraction to improper fractions.
Reduce by crossing it(5 and 15 reduced to 1 and 3; 4 and 14 reduced to 2 and 7.)
Change answer to proper fraction.
Answer:
45 degrees
Step-by-step explanation:
Triangles angles add up to 180 degrees. 180-90=90. Since the other two angles are the same size we can do 90/2=45 and then you have your answer.
In order to see the behavior of the line formed from the equations, we write the given equation in general form which is y=mx+b
<span>1.5x + 0.2y = 2.68 --> y= -7.5x + 13.4
</span>
<span>1.6x + 0.3y = 2.98 --> y= -5.33x + 9.93
</span>
<span>They definitely are not parallel lines and do not overlap at all points. Plotting the equations in a graph, an intersection is observed. This intersection most likely is the third option. The lines at (1.6, 1.4).</span>
