A firefighter’s ladder leans 50 feet up against a building and is positioned 50 feet away from the building along the ground. The base of the ladder makes a 45° angle with the ground. Use a calculator to find the decimal approximation for cos T. Round to three decimal places.

What are the solutions to the equation 4x2+3x=24-x

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.