Grace and ellie are in different geometry classes. there are only two geometry classes at their high school. two students are being picked to attend a special math competition, one student from each class. if there are 20 students in one class and 26 students in the other, find the probability that both grace and ellie will be picked to attend the competition.

1/20*1/26=1/520

Step-by-step explanation:

You have to solve for a compound event, I had the same question and 1/23 was wrong. You take the probability on on girl being picked (1/20) and have to multiply it by the chance of the other girl getting picked (1/26)

Hope this helps :)

1. 180°. the sum of the interior angles of a triangle is 180°, for the equilateral triangle that it has three equals side is 60°+60°+60°=180°.

2. 60°. each interior angle of a equilateral triangle is 60°

3. 120°. the measure of ∠m is 120°, the sum of the angles ∠m and ∠n is equal to 180°. so, in order to find the measure of ∠m, we have ∠m+∠n=180° > ∠m=180°-∠n > ∠m=180°-60°=120°.

4. 360°. the sum of the exterior angles of an equilateral triangle is ∠m+∠r+∠x=120°+120°+120°=360°. the exterior angles of any triangle always add 360°.

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