Beau has decided to use the method of elimination to solve the system of equations as shown below.

2x+3y=15

x-3y=3

explain what beau's first step could be, and why the technique of elimination provides a solution to the system of equations.

answer the question using complete sentences and/or mathematical statements. you will earn 1 point for a correct first step and up to 2 points for an appropriate explanation.

hint: look at the coefficients of each term. this will you identify which variable to eliminate.

what should the first step be?

explain - why did you identify that step?

how does it you get closer to a solution?

Find the value of the cosine for angle a

An airplane consumes fuel at a constant rate while flying through clear skies, and it consumes fuel at a rate of 64 gallons per minute while flying through rain clouds. let c represent the number of minutes the plane can fly through clear skies and r represent the number of minutes the plane can fly through rain clouds without consuming all of its fuel. 56c+64r < 900056c+64r< 9000 according to the inequality, at what rate does the airplane consume fuel while flying through clear skies, and how much fuel does it have before takeoff? the airplane consumes fuel at a rate of gallons per minute while flying through clear skies, and it has gallons of fuel before takeoff. does the airplane have enough fuel to fly for 60 minutes through clear skies and 90 minutes through rain clouds?

Choose the number sentence that shows the identity property of addition. a. 122 = 61 + 61 b. 62 = 1 + 61 c. 61 = 0 + 61