Answer:
70 degrees = a
Step-by-step explanation:
Triangle= 180 degrees.
Therefore, since a and the unmarked angle are congruent since it is an isosceles triangle, we subtract 40 from 180, with a result of 140. With 140, we divide by 2 to find the degrees for both the unmarked angle and angle a, since they are congruent. 140/2 = 70, Angle A will equal to 70 degrees
Lines are perpendicular if the slope of one is the negative reciprocal of the other. In this case the slopes are -8/3 and 8/3, so while negative they are not reciprocal. So no, the two lines intersect but are not perpendicular.
for 
when a=1, then the value of c that will make the quadratic a perfect square (allows you to complete the square) is 
given x^2+x
b=1
so 
answer is C
Answer:
Colton solved 9 math problems and read 18 pages.
Answer:
The value of the y-coordinate is -2
Step-by-step explanation:
Here in this question, we want to use the section formula to determine the y- coordinates of the line that divides the segment in the ratio 1:3 or 1/3
The formula to use to get the coordinates is;
( (mx2 + nx1) /m + n , (my2 + ny1)/( m + n))
So in this case;
m = 1 n = 3
x1 = 4 , x2 = 5
y1 = -2 , y2 = -2
So substituting these values ( we will only make for the y part since we only need to get the y coordinate)
Hence;
[1(-2) + 3(-2)]/(1+3) = (-2-6)/4 = -8/4 = -2
