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Q: Evaluate the function below for x = 3 F(x) = x ^ 3 + 5x ^ 2 + 1 Answer D. 73?

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78

It works out as: 11y = -5x+519 or as 5x+11y-519 = 0

For example 5x \ 9 x 5 + 10 + 72 = 9 So you move 72 over to 9 and minus it 5x / 9 x 5 + 10 = 9-72 Then bring 10 over 5x / 9 x 5 = -63- 10 Then brong 5 over 5x / 9 equals - 73 5x equals -73 times 9 5x equals 146 X equals to 146 divide by 5 Thanks you Hello Israel

(1) 9x-2y=73 (2) 5x-9y=9 from (1) 9x-2y+2y=73+2y => 9x= 73+2y => x = (73+2y)/9 put into (2) 5x-9y = 9 => 5(73+2y)/9 - 9y=9 => 10y/9 + 365/9 -9y = 9 => 10y/9 - 9y = 9 -365/9 = -284/9 => -71y/9 = -284/9 => 71y= 284 => y = 284/71 = 4 and x = (73+2*4) / 9 = 9

9x - 2y = 73 . . . . . (a) 5x - 9y = 9 . . . . . (b) (a)*9: 81x - 18y = 657 (b)*2: 10x - 18y = 18 Subtract: 71x = 639 so x = 9 Substitute in (a): 81 - 2y = 73 2y = 8 so y = 4 The ordered pair is (9, 4)

(9,7) by Kayla hamilton

One side has lenght 5x+3 and there are 6 sides. so the perimeter is 30x+18 and we are told that equal 91 30x+18=91 30x=91-18=73 x=73/30 cm or about 2.43 cm

Grouping like terms, -73x = 68 Therefore, 68/-73 = x x = -0.93150684 recurring (that is, -0.9315068493150684...)

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