The table below shows the scores that Amy and Bria have earned in their math class this quarter. Tests are worth 45%, quizzes are worth 30%, homework is worth 15%, and the project is worth 10% of their quarter grade. Show how you can use matrix multiplication to determine what each student's quarter grade will be?

answer: check all that apply, where the options?

step-by-step explanation:

geometry: triangles

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call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584

the opening of this porabola is facing up

step-by-step explanation: