Brennan and Dale each ran a marathon. Brennan finished the marathon in 265 minutes, where the mean finishing time among all runners was 240 minutes with a standard deviation of 54 minutes. Dale finished the marathon in 231 minutes, where the mean finishing time among all runners was 210 minutes with standard deviation of 49 minutes. Which runner, Brennan or Dale, had a relatively better marathon run

step-by-step explanation:

a rhombus is a parallelogram enjoying his symmetry.

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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°.

hi there, i would be interested to you with your test, may you add the questions and answer options.

- : )