at noon, the tempature at a mountaintop research center is 11 degrees. overnight the tempature drops to -19 degrees. Which expression represents how much the tempature changed?

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)

In δabc, if the length of side b is 3 centimeters and the measures of ∠b and ∠c are 45° and 60°, respectively, what is the length of side c to two decimal places?

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?