Identify the graph of the equation. What is the angle of rotation for the equation?
21x2-8378 + 13y2 = 225
a.
b.
ellipse; 75°
hyperbola; -60°
ellipse; -30°
d. hyperbola; 90°
Please select the best answer from the choices provided
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Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

The probability that a college student belongs to a health club is 0.3. the probability that a college student lives off-campus is 0.4. the probability that a college student belongs to a health club and lives off-campus is 0.12. find the probability that a college student belongs to a health club or lives off-campus. tip: p(a or b) = p(a) + p(b) - p(a and b) 0.54 0.58 0.70 0.82

Mr. thompson is on a diet. he currently weighs 260 pounds. he loses 4 pounds per month. what part of the story makes the relationship not proportional?