Answer:
6pi
Step-by-step explanation:
First find the circumference of the entire circle
C = 2*pi*r
C = 2*pi*4
C = 8pi
We have 3/4 of the circle so multiply the circumference by the fraction of the circle
3/4*8pi
6pi
Answer:
infinitely many solutions
Step-by-step explanation:
We want to find solution to the system:
-4y=-20x+40
y+10=5x
We make y the subject in the second equation to get;
y=5x-10
We substitute y=5x-10 into the top equation to get:
We expand to obtain;
This implies that:
Therefore the system has infinitely many solutions.
Answer:
X=-3/2
Step-by-step explanation:
-2(x+2)=-1
Distribute
-2*x and -2*2
-2x-4=-1
Solve for x
-2x-4=-1
+4 +4
-2x=3
/-2 /-2
x=-3/2
Angles 1 and 8 are created by line t intersecting with line m.
Line t is called a transversal line, because it intersects 2 parallel lines.
t divides the straight angle formed by m alone, forming the linear pair of angles (1) and (8), whose sum is 180 °, that is they are supplementary.
Answer: (1) and (8) are linear pairs
