2x2-12x-54 = 0
Solve by factoring or using the quadratic equation formula or by completing the square:
(2x+6)(x-9) = 0
Therefore: x = -3 or x = 9
To find the original number when given the prime factors, we have to work backwards. First, we simplify into 2 squared times 3 squared. (2x2) x (3x3) Then we expand the brackets. 4 x 9 = 54 Therefore 54 is the number, with 2x2 and 3x3 as the prime factors.
-9x + 2y = -69 So 2y = 9x - 69 The other equation can be written as 6x - 4y = 54 or 6x - 2*2y = 54 Substituting for 2y gives 6x - 2*(9x - 69) = 54 6x - 18x + 138 = 54 12x = 84 x = 7 and then 2y = 9x - 69 = 9*7 - 69 = 63-69 = -6 so that y = -3
54
-60
9
Depends on how big you cut the pieces. If you cut 2x2 inch pieces, a 12x18 cake will yield 54 servings.
2x2-24x-320 in simpler terms is 2(x2-12x-160) 2(x2-12x-160) =2(x-20)(x+8)
To find the original number when given the prime factors, we have to work backwards. First, we simplify into 2 squared times 3 squared. (2x2) x (3x3) Then we expand the brackets. 4 x 9 = 54 Therefore 54 is the number, with 2x2 and 3x3 as the prime factors.
54th = 1/54. Divide 79 by 1/54 to find out how many there are: 79 ÷ 1/54 = 79 × 54/1 = 4266
In order to find the correct answer simply do the following calculation 100 - 54 = 46
-9x + 2y = -69 So 2y = 9x - 69 The other equation can be written as 6x - 4y = 54 or 6x - 2*2y = 54 Substituting for 2y gives 6x - 2*(9x - 69) = 54 6x - 18x + 138 = 54 12x = 84 x = 7 and then 2y = 9x - 69 = 9*7 - 69 = 63-69 = -6 so that y = -3
9 multiplied by 6 equals 54. 2 times by 27 equals 54
2x + 33x - 54 35x - 54 We can not find x with the information given. You need to equate somethingto your equation. If your equation equals 0 then... 0=35x-54 35x=54 x=1.543 IF your equation equals x then... x=35x-54 -34x=-54 x=1.588
54 divided by 3 equals 18 Check: 18 + 18 = 36 36 + 18 = 54
54
The product is the result of adding, which is indicated by the word 'and'; so 54 added to 6 equals 60 (the product).
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