Focus = (2,9) Positive parabola, p = 10. Which answer is true? Directrix: y = 1, Vertex ( 2,8) Equation: y = 1/4(x-2)^2 + 9
Directrix: y = -1 Vertex ( 2,19) equation y = 1/40(x-2)^2 + 9
Directrix y = -11, vertex ( 2, -1) equation: y = 1/40 (x - 2)^2 + 9

19.

step-by-step explanation:

you add the 9 in the tens column since it is a single digit and 9 plus zero is 9 so it is 19

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answer:

it is 28 degrees colder in detroit than philadelphia.

step-by-step explanation:

what number adds to 21  

-7 + ? = 21

-7 + 28 = 21

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