Answer:
Step-by-step explanation:
Let's solve x^2 - 2x + 2 = 0 using "completing the square:"
1. Take the coefficient of x: It is -2.
2. Halve this, obtaining -1.
3. Square this result, obtaining 1.
4. Add 1, and then subtract 1, between -2x + 2:
x^2 - 2x + 1 - 1 + 2 = 0
5. Rewrite x^2 - 2x + 1 + 1 = 0 beginning with the square of a binomial
(x - 1)^2 + 1 = 0, or (x - 1)^2 = -1
6. Take the square root of both sides, obtaining x - 1 = ±i, or x = 1 ±i
7. Write out the roots: they are x = 1 + i and x = 1 - i (two complex, different roots). No real roots, so the last command of this question is irrelevant. The graph never touches the x-axis; the graph is in Quadrants I and II and is that of a parabola that opens up.
(-75/37, -193/74) is your answer .-.
Answer:
£100
Step-by-step explanation:
if the ratio is 7:3, the difference between them is 7-3 . = 4.
So,
4x = £40
Now, calculate x
x = £10
Now,
we are able to calculate:
7x (Bridget's share) = £70
3x (Caroline's share) = £30
Sum = £100
Hope this helps.
Good Luck
Answer:
C. The interval of the stem and leaf plot is not consistent.
Step-by-step explanation:
The stem and leaf plot appears at first glance to be accurate. However, 5 is skipped altogether in the stems; this makes the plot look symmetric instead of skewed.
