Answer:
X = -7 and y = -7.5
Step-by-step explanation:
Use substitution. Let’s try to get x by itself in the second question since it seems easier.
-4x + 4y = -2
-4x = -2 -4y
x = 1/2 + y
Subsitute that into the other equation for y.
4x -2y = -13
4(1/2 + y) - 2y = -13
2 + 4y -2y = -13 # Use the distributive property
2y = -15 # put together like terms
y = -7.5
Then plug it into the x formula
x = .5 -7.5
x = -7
Answer:
4(x - 4) = 4x - 16
Step-by-step explanation:
4(x - A) = 4x - 16
4x - 4A = 4x - 16
Equating Constant terms (terms without x): -4A = -16
A = 4
Therefore , 4(x - 4) = 4x - 16
Answer:
C
Step-by-step explanation:
Student 2 made an error with the distributive property.
Step-by-step explanation:
a straight line can be drawn between any two points.
given any two distinct point there is a line that contains them.
Given angle 105 degrees:
1. Find the complement of the 105 degree angle: 75 degrees
2. Now we know that the vertical angle across from this 75 degree angle is also 75 degrees.
3. Now we know 2/3 angles in the bottom left triangle. (39+75+y = 180)
4. Solve for y, and y = 66 degrees
5. The vertical angle across from y is x, and it also is 66 degrees
Answer: 66 degrees
