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Earn +20 ptsQ: What is the answer to 15X WHEN X equals 4?
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What is the solution to X plus 15 equals 16?
x+15=16x=16-15x=1
X2 plus 15x equals -26?
x2 + 15x = -26x2 + 15x + 26 = -26 + 26x2 + 15x + 26 = 0 where a = 1, b = 15, and c = 26x = [-15 ± √(152 - 4(1)(26))]/2(1)x = (-15 ± √121)/2x = (-15 ± 11)/2x = (-15 + 11)/2 = -4/2 = -2 or x = (-15 - 11)/2 = -26/2 = -13
What should you do to eliminate the y-term from the top equation 15x plus 7y equals 4 5x plus 7y equals 2?
15x+7y = 4 5x+7y = 2 Subtract the bottom equation from the top equation to eliminate y which will leave you with: 10x = 2 Divide both sides by 10 to find the value of x: x = 2/10 = 1/5 in its lowest terms. Substitute the value of x into the original equations to find the value of y: Therefore: x = 1/5 and y = 1/7
15x plus 75 and 6xFind the value of x?
set formula:15x +75 = 6xbring x to left side:15x - 6x + 75 = 09x = - 75x = - 75/9
X plus 3y equals 4 -x plus 2y equals -4?
x=4 y=0
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