Y = -3(x + 5)^2 - 4 Convert the equation from vertex form to standard form.

A. y = 9x^2 - 15x + 21

B. y = 3x^2 - 30x - 79

C. y = 3x^2 - 75x - 4

D. y = 9x^2 + 90x + 221​

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

the answer is 54 sq. ft. i just did this question, on odyssey ware, and it was right. make brainliest.

answer: i think you should do the math and pay attention in class : )

step-by-step explanation:

that is truly what   think but if i get the answer i will

they charge the same amount at 20 minutes.

step-by-step explanation: