Answer:
#1: 5
#2: 
Step-by-step explanation:
Inverse of Pythagorean Theorem: c²-b²=a²
c² b² a²
13²- 12² = 25
= 5
Pythagorean Theorem: a²+b²=c²
a² b² c²
2² + 6² = 40
c = 
Answer:
The value of 
Step-by-step explanation:
We have

Now we need to find


Answer:
1 solution
Step-by-step explanation:
It's only 1, because the two lines intersect in one spot only.
Answer:
a. 4y =12x the constant of variation is 3
Step-by-step explanation:
The equation for direct variation is y=kx
a. 4y =12x
Divide each side by 4
4y/4 = 12x/4
y = 3x
This is direct variation and the constant is 3
Equations b ,c, d all have a constant added which make them something other than a direct variation
Answer:
0.278
Step-by-step explanation:
5 + 4 = 9
*
= 0.2777...
Try to do the others on your own using the information I gave you.