99 !

you estimate that 200 people attended a school concert. the actual attendance was 240 people. solve the two problems with proportions and show your work.

a: find the percent error using a proportion

b: what other estimate gives the same percent error? explain your reasoning

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?

He trapezoid is composed of a rectangle and two triangles. what is the area of the rectangle? what is the total area of the triangles? what is the area of the trapezoid? ? a) 42 cm2; 27 cm2; 69 cm 2 b) 54 cm2; 27 cm2; 81 cm 2 c) 108 cm2; 27 cm2; 135 cm 2 d) 108 cm2; 13.5 cm2; 121.5 cm 2