A conic section whose focus is at the pole has the equation r=2/1+cosθ. Which of the following equations is the directrix of the conic?

rcosθ = - 2

rcosθ = 2

rsinθ = - 2

rsinθ = 2

I think its the second

What is the solution of the linear system 3x-2y=1 - x+4y=-27

What is 6x-2y=30 equal to and what is its x intercept

Circumference of a circle with diameter of 4cm

What does 10^2-2 (10+5) equal

34699 rounded to the nearest ten thousand

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

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