How do you write 0.4 in simplest form

A sample of n = 25 observations from a normal population is drawn. the population mean is 100 and the population (known) standard deviation is 20. find the probability that the sample mean is greater than 95.

The middle school camera club sold 240 tulip bulbs 360 daffodil bulbs. Students divide the bulbs into 100 bags to sell at the school fair.

4,500, 9%, 3.5 years

If yis the number of yellow cars, which variable expression represents the phrase below? The sum of the number of yellow cars and 9 red cars O O O A. y. O B. y-9 O O D. y+9

Solve the given system of equations. - 9a = 4 9a + 9c = 6 2b + 8c = 15

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?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.