Workout the 11th triangular number

Mr. Jackson has 30 pennies and 42 dimes that he will be putting into containers for groups of students to use for a math activity. He wants to put an equal number of pennies and an equal number of dimes into each container. He will use all the coins.

Negative 10.9p plus 3.9 equals negative 9.18 ... what does p equal

The members of a school math club want to buy shirts that have the cubs logo on them each shirt cost $11 in addition there are two one time fees of $77 to design the logo and a fee of $1.

Convert 48/7 into a mixed number

Item 6 The cost y (in dollars) to rent a camping tent is proportional to the number xx of days that the tent is rented. It costs $56 to rent a tent for 7 days. Write an equation that represents the cost to rent a camping tent for x days.

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.