A system of equations is shown below.
Equation A: 5x + 9y = 12
Equation B: 4x -
3y=8
Which method eliminates one of the variables?
(1) Multiply equation A by - and add the result to equation B.
(2) Multiply equation B by 3 and add the result to equation A.
(3) Multiply equation A by 2 and equation B by - 6 and add the results
together
(4) Multiply equation B by 5 and equation A by 4 and add the results
together.
Emma will roll two number cubes labeled 1 through 6. she will record the sum of the two numbers after each roll. she will roll the two cubes 540 times. how many times should emma expect the sum to equal 5?
Aprojectile is thrown upward so that its distance above the ground after t seconds is given by the function h(t) = -16t2 + 704t. after how many seconds does the projectile take to reach its maximum height?
Type the correct answer in each box. spell all the words correctly, and use numerals instead of words for numbers. if necessary, use / for the fraction bar(s).