Answer:
11
Step-by-step explanation:
All you have to do is plug in a. In this case, a=3.
21/a+4
21/(3)+4
21/3+4
7+4
11
If this helps please mark as brainliest
K^2-16
=(K-4)(k+4)
Because 4 • -4= -16
Answer:
c
Step-by-step explanation:
One point: draw the line a bit lower such that it touches the circle. A line from the center of the circle to the line will be perpendicular to it.
Two points: draw the line somewhere through the circle. There will be two intersection points.
Three points: can't be done.
- Answer:
- (x,y)=(3/31, 107/62)
Step-by-step explanation:
{2x+8y=14
{216x-4y=14
{x+4y=7
{216x-4y=14
217x=21
x=3/31
2*3/31+8y=14
y=107/62
(x,y)=(3/31, 107/62)
2*3/31+8*107/62=216*3/31-4*107/62=14
14=14=14 since all of the equalities are true the order pair is the solution of the system (x,y)=(3/31, 107/62)
hope this helps :)