Determine the conic section given by each of the following equations. Be sure to show all work to find the standard form of the equation of each conic section. 10 points each. Correct conic section (2 points) All work shown (8 points) 1. 3x^2 + 5y^2 − 12x + 30y = −42

2. x^2 + 3y^2 + 4x = 5

3. x^2 + 2x + 4y = 7

4. −9x^2 + 25y^2 − 54x − 50y − 281 = 0

5. 12x^2 − 4y^2 − 72x − 16y + 44 = 0

1 1/4 hours

step-by-step explanation:

2/4 + 2/4 + 1/4 = 5/4 or 1 1/4

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet