Verify

cos^4x-sin^4x=cos2x

A negatively skewed curve represents a distribution in which there are very few scores on the right side of the distribution.

A rectangle has an area of 96 cm2 The length of the rectangle is 4 cm longer than the width. Work out the length and width of the rectangle.

Can I see a multiplication chart

If f (x) = ax (x-3) and f (-2) = 5, what is the value of a?

The members of a club hire a bus for $2100. seven members withdraw from the club and the remaining members have to pay $10 more each to cover the cost. How many members originally agreed to go on the bus?

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.