Select all the statements that correctly describe the solutions to this system of equations?

2x-y = 0

x+y=9

How many significant figures are there in 0.04720?

A cyclist rides her bike at a speed of 20 kilometers per hour. What is this speed in miles peer hour? How many miles will the cyclist travel in 3 hours? In your computations, assume that mile is equal to 1.6 kilometers.

How many digits will be in the quotient? 39 4,641

What is the largest possible value x could take given that it must be an integer? x < 5

The length of a fence is 67 yards. what is the equivalent measurement in meters?

What is the mean average diviation

If (x + 1) (x - 3) = 5, then which of the following statements is true?. x + 1 = 0 or x - 3 = 0. x + 1 = 5 or x - 3 = 5. x - 4 = 0 or x + 2 = 0

14kg is equal to many Ib

The number of people arriving for treatment at an emergency room can be modeled by a Poisson process with a rate parameter of four per hour.

The file size of an electronic book is 3.6 megabytes. What is the file size of 18 of these electronic books? 21.6 megabytes 48.6 megabytes 64.8 megabytes D. 71.5 megabytes