At the airport, ten people are waiting on standby. two seats become available, one first class and one coach. how many ways are there to fill the two seats?

10
20
45
90

If you are trying to move an attached term across the equal sign (=), what operation would you use to move it?

Juliana says that she can use the patterns of equivalent ratios in the multiplication table below to write an infinite number of ratios that are equivalent to 6: 10. which statement explains whether juliana is correct? she is correct because she can multiply 6 and 10 by any number to form an equivalent ratio. she is correct because 6: 10 can be written as 1: 2 and there are an infinite number of ratios for 1: 2. she is not correct because the multiplication table does not include multiples of 10. she is not correct because 6: 10 is equivalent to 3: 5 and there are only 9 ratios in the multiplication table that are equivalent to 3: 5.

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1