Answer:
x = 3 twice
Step-by-step explanation:
x^2 = 6x - 9
Rewrite by subtracting 6x from both sides and add 9 to both sides.
x² - 6x + 9 = 0
Factorise by finding factor of +9 that add up to -6
These factors are -3 and -3 that is
-3 -3 = -6 and -3×-3 = 9
Rewrite equation
x² - 3x - 3x + 9 = 0
x ( x-3) -3(x -3) = 0
Therefore
(x -3)(x-3) = 0
x - 3 = 0 or x - 3 = 0
x = 3 or x = 3
x = 3 twice
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Answer:
-9
Step-by-step explanation:
3x=-27
Answer:
It costs $1.60 for 1 pen. (It costs $1.60 PER pen)
Step-by-step explanation:
There are tens pens for $16. If you need one pen, you need to get 1 pen, 10÷10=1. If you need to divide 10 by 10, you divide 16 by 10 which equals 1.6.
Answer:
74.24ft²
Step-by-step explanation:
Area of the figure=Area of the triangle+Area of the semicircle
A=½•base length•vertical height+¼πd²
A={½•6ft•8ft}+¼π×8ft²
A=24ft²+16πft² with π=3.14
A=1856/25=74.24ft²