if your tying to say simplify not simply 12, then the answer should be 3
12/2=6
6/2=3
and thats all you can do i guess
Answer:
Step-by-step explanation:
1) If you really meant X^2+12=40, then this simplifies to x^2 = 28, and therefore x = ±√28, or x = ±2√7.
2) If you meant X^2+12x=40:
a) Take half of the coefficient of x: that would be (1/2)(12), or 6.
b) Square this result, obtaining: 6² = 36
c) Add this 36 to x^2 + 12x + 40, and then subtract it: We get:
x² + 12x + 36 - 36 = 40, or x² + 12x + 36 = 76
We have to add 36, as indicated above, to "complete the square."
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Answer:
84.85cm
Step-by-step explanation:
Let the sides of the square be x
The perimeter of the square = 4x
Get x using the pythagoras theorem
x^2 + x^2 = 30^2
2x^2 = 900
x^2 = 450
x = 21.21cm
Perimeter of the plate = 4(21.21)
Perimeter of the plate = 84.85cm
Answer:
1b. 15 plus 16a
2a. 49w plus 28
2b. 36 plus 60n
3a. 50 plus 20w
3b. 77 plus 121a
4a. 55s plus 30
4b. 132 plus 121a
5a. 16 plus 14c
5b. 16q plus 2x ( i dont know about that one )
6a. 21 plus 35r
6b. 88d plus 11k
7a. 132p plus 108
7b. 30b plus 25
Step-by-step explanation:
that took forever