Please help me out with a few homework questions!!?? Please?

Question

1.) If A = 7, B = -4, C = 3

Evaluate the expression: -B - (BC)

2.) Parallel lines intersect to form a 90 degree angle.
A.) True
b.) False

3.)A triangle where side c (the hypotenuse) = 11, side a = 5 and side b = 6 would be a right triangle.
A.) Yes
B.) No

4.)2(9x-2) –2 = 3(4 + 5x)
A.) x = -6
B.) x = 2
C.) x = 5
D.) x = 6
E.) x = 9

Please help with what you can!!
Thanks a bunch Ash-

Answer 1

1) 8
2) cannot intersect, coz parallel
3) is not a triangle
4) I've already done a day's work!

Answer 2

Hi..

q2.. Parallel lines do not intersect , never, they lie side by side eg.. to = - those two lines in the equal sign I typed run parellel to each other.

q3. in a triangle, you will never have a right angle.. a right angle is what you have in say the capital letter L.. see how the verticle line comes in contact with the horizontal line.. that is a right angle.

Answer 3

Howdy. The person that answered that you will never have a right angle in a triangle is an idiot. Dont listen to them. Why do you think they have triangles called RIGHT triangles. Gee maybe because ther is a right angle in it. That person is stupid. Beileve them and you will be to.