Please help I WILL GIVE BRAINLIEST AND 25 POINTS Write the series using summation notation.

4. - 10 + 2 + 14 + 26 + 38 + 50 + 62 + 74

5. 6+13+32+69+

6. - 5/8 + 10/11 + 20/16 + 40/23

Which statement explains how you could use coordinate geometry to prove that quadrilateral abcd is a parallelogram? -5 -4 -3 -2 -1 t 1 2 3 4 prove that all sides are congruent and have slopes that are opposite reciprocals prove that segments ad and ab are congruent and parallel prove that opposite sides are congruent and have equal slopes prove that segments bc and cd are congruent and parallel

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.

Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.