Can somebody help me please is due right know! Thank you

When i add money am i supposed to make it like this 7+12 or 7.00+12.00 because i got 19 dollars for my answer

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.

The point a is at –2 and the point b is at 7. marissa would like to divide this line segment in a 4: 3 ratio, and she would like to use the formula x = (x2 – x1) + x1. what values should she substitute into the formula? a = a + b = x1 = x2 =