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?

A

Step-by-step explanation:

Because it is 180 degreese

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

total amount to be paid = $19.5

step-by-step explanation:

given ,

original price = $25.99

discount = 25%

discount amount = 25% of original price

discount amount = 25/100   * 25.99

discount amount = $6.49

hence , the total amount to be paid = original price - discount amount

                                                            = $25.99 - $6.49

                                                            =$19.5

total amount to be paid = $19.5