a boy pulls a nail from the wall with a strong held to a naill . the string is inclined at angle 60° to the wall. if the tension in the string is 4newton, what is the effective force used in pulling the wall

In the diagram below, dab and dac are adjacent angles. if mdac = 25°, what is mdab in degrees? what is mbac in degrees?

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.

Find the area of a parallelogram with base 15 yards and height 21 2/3