20÷7916 please and thank you so much

Write the summation to estimate the area under the curve y = 1 + x2 from x = -1 to x = 2 using 3 rectangles and right endpoints

Find the missing variable for a parallelogram: a = latex: 32in^2 32 i n 2 h = b = 6.3 in (1in=2.54cm)

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c