The half-life of a radioactive kind of tellurium is 25 minutes. If you start with 88 grams of it, how much will be left after 50 minutes?

A bag contains 6 red balls 8 yellow ones and 4 black ones if a ball is randomly selected find the probability of it being neither black nor yellow A 2 9 B 5 9 C 7 9 D 1 3 E 4 9

Kiran shops for books during a 20% off sale. Write an equation that relates the sale price, s, to the original price p.

Given that the measure of ∠x is 73°, and the measure of ∠y is 90°, find the measure of ∠z.

What numbers are a distance of 12 unit from 35 on a number line?

Laura created a website to create T-shirts. In the first month she put up her website she had only a single T-shirt order. Each month she got more orders.

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.