You are ordering a pizza. you have a choice of three toppings: mushrooms, pepperoni, and peppers. how many different pizzas can you order if you select exactly two different toppings?

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year.how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?