4x+8y=20
-4x+8y=30
——————-
-4 and 4 cancel each other
16y=50
y= 25/8
4x+8y=20
4x+8(25/8)=20
4x+25=20
-25 -25
4x=-5
x= -5/4
(25/8 , -5/4)
Answer:
Yes
Step-by-step explanation:
1 dozen = 12
dozen = 2.5 * 12 = 30
She has 30 balloons, so yes, there are enough balloons.
Answer:
complementary
Step-by-step explanation:
complementary angles are are angles that add up to 90 degrees
This is true.
If the end point of the line FG line in the same plane, then all of the points on the line FG will lie on the same plane. But this is only true if the FG line is a straight line.
If FG is a curved line this statement can but does not have to be true.
Answer:
a. 1/3
Step-by-step explanation:
y=x/3-5 (rewrite x - term)
y = (1/3) x + 5
recall that in the slope-intercept form of a linear equation y = mx + b
m is the slope.
In our case, we can clearly see that slope m = (1/3)