Answer:
Step-by-step explanation:
1 Yes they are right angles, it is a right angle because you solve it with a Sine equation
2 the hypotenuse is the longest side
3. If the squares of the two shorter sides add up to the square of the hypotenuse, the triangle contains a right angle.
the answer is B. y=12x+4
166.25
12 1 /4 + 154
166 1/4
665/4 , 166.25
there are 33 marbles
100÷3