Find all pairs of real numbers $(x, y)$ such that $x + y = 6$ and $x^2 + y^2 = 28$. if you find more than one pair, then list your pairs in order by increasing $x$ value, separated by commas. for example, to enter the solutions $(2,4)$ and $(-3,9)$, you would enter "(-3,,4)" (without the quotation marks).

28

step-by-step explanation:

because that's the answer

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