19.Item 19 refers to toothpaste which is sold in four different tubes. Which amount is the best buy? 3 100 ml $1.49 150 ml S2.25 **84444 200 ml $2.50 250 ml ILARAK $3.49 O A) 100 ml (B) 150 ml O (C) 200 ml O ( (D) 250 ml​

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step-by-step explanation:

idk

step-by-step explanation:

answer: your answer is c

step-by-step explanation:

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°.