If their slopes are the same, the line are parallel, which means in number 3 and 5 the lines are parallel.
If one slope is the reciprocal of the other one with opposite sign, then they are perpendicular. Fir example lines with these slopes are perpendicular: 8/9 and -9/8
So, in number 4, 8 and 10 lines are perpendicular.
Answer:
44
Step-by-step explanation:
crop the square into two, then you can see tangent which is 90°.
so, 360-90-90-136=44
Answer:
A !
Step-by-step explanation:
Substitute the value of the variable into the expression and simplify.
Hope this helps!
-Lei
Answer:
3
Step-by-step explanation:
No, only 3, 6, and 9 are divisible by 3 because 3 x 1= 3, 3 x 2= 6, 3 x 3= 9. Hope this helps
