30 POINTS FIR THE ANSWERS. PLEASE Find the value of X.
50°
90°
100°

What is the sum of the measures of the exterior angles. One at each vertex, of a nonagon?

A. 180 degrees
B. 1260 degrees
C. 1080 degrees
D. 360 degrees

The sum of the interior of a polygon is 2,340 degrees. How many sides does they polygon have?

What is the measure of each interior angle of a regular pentagon?

ABCD is an isosceles trapezoid is with legs AB and CD base BC. AB= 7y-4. BC=4y-6 and CD=8y-18. What equation would you set up in order to find y?

What is the standard deviation of the following data set rounded to the nearest tenth? 3, 17, 18, 15, 12, 21, 9

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?

Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265