Which one is correct? (penguins flies) or (a penguin flies)

A popular Internet website is being redesigned. Developers of the website would like feedback from its users regarding the different design options. Which of the following sampling methods would be best for this situation? A.

1. y varies inversely with x. If y = 3 and k (the constant of variation) = 33, what is x? Round to the nearest whole number, if necessary. 2. y varies inversely with x, and k (the constant of variation) = 5.6.

When a number is written in scientific notation, could zero ever be in the ones place of the first factor? Which digits, if any, would never be in the ones place?

The value of the y-intercept for the graph of 4x - 5y=40 is?

at a store, sales tax is charged at a rate of 2% on the cost price of an item. the sales taxon a dress which cost $180 is?

The ratio of hydrogen atoms to oxygen atoms in water is 2:1. If an amount of water contains 341 trillion atoms of oxygen, how many hydrogen atoms are there?

Evaluate 0.411+9.9+0.8 and round the answer appropriately. Express your answer numerically using the appropriate number of decimal places.

A bicycle wheel has a radius of 0.33 m. how many revolutions does the wheel make when the bicycle is ridden 1 km? round to the nearest whole number. solved

The following are the ages (years) of 5 people in a room: 13, 22, 15, 14, 15 A person enters the room. The mean age of the 6 people is now 16. What is the age of the person who entered the room

John Marko buys a car $11,400.00. In three years the car depreciates 48% in value. How much is the car worth in three yoears?