What is the measure of ∠r ?

enter your answer as a decimal in the box. round only your final answer to the nearest hundredth.

m∠r=
°

a right triangle r s t. angle s is marked as a right angle. side r t is labeled as 40 centimeters. side s t is labeled as 30 centimeters.

Multiply. −2x(6x4−7x2+x−5) express the answer in standard form. enter your answer in the box.

You will get 25 points an image of a rectangular prism is shown below: part a: a cross section of the prism is cut with a plane parallel to the base. what is the name of the shape created by the cross section? explain your answer. (5 points) part b: if a cross section of the prism is cut perpendicular to the base, what would be the shape of the resulting cross section? explain your answer. (5 points)

How do you find p(a and b) if a and b are independent events for two or more actions, such as tossing a coin twice and finding p(heads and heads)? 2. how do you find p(a or b) if a and b are independent events for one action, such as spinning a four-color spinner once and finding p(red or blue)?