Answer:
1. y = 9(x+1/2)^2 -13/4
Step-by-step explanation:
y = 9x^2 + 9x – 1
first isolate the x terms
y = 9(x^2 +x) -1
then add 1/4 inside the brackets to make it a perfect square trinomial (half of the coefficient of the x term squared is how we get 1/4)
since we just added 1/4 we need to subtract what we just added to balance the equation. so 1/4 times 9 is 9/4 ( the number we just added to the equation). then you subtract 9/4 outside of the brackets.
y = 9(x^2 +x +1/4) -1 -9/4
then simplify
y = 9(x+1/2)^2 -13/4
Do you have photos for the triangle?
Area of a square = side * side
If each side of a square measures, 2 metres, then
area = 2m * 2m
= 200 cm * 200 cm
= 40,000 cm^2
Answer:
5.218
Step-by-step explanation:
Since 2, ten thousandths place, is less than 5, the thousandths place stays the same.
It would be 5.218
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-Chetan K
