B M Z
i belive this is the answer
Answer:
4metres
Step-by-step explanation:
Given the height of the trail modeled by the function h(x) = -0.1x^2 - 0.3x +2.8 , where x is the horizontal distance in kilometers
The horizontal distance occurs at the x intercept i.e at h(x) = 0
Substitute
0 = -0.1x^2 - 0.3x +2.8 ,
Multiply through by -10
0 = x^2 + 3x - 28
x^2 + 3x - 28 = 0
Factorize
x^2 + 7x - 4x - 28 = 0
x(x+7) - 4 (x+7) = 0
(x-4)(x+7) = 0
x-4 = 0 and x+7 = 0
x = 4 and -7
Since the danced cannot be negative, hence the horizontal distance of the trail is 4m
Answer:
The correct answer would be D. y=2/3x+8
Answer:
Room and board
30%
Step-by-step explanation:
If you look at the numbers in the table, you can easily see Room and board is the largest expense, with $127.50, three times more than the second place.
Now, to find the percent of that expense vs her income we just have to divide this big expense ($127.50) by the total income she has ($425).
% = $127.50 / $425 = 30%
So, that expense is 30% of her income, that's a big chunk, but it's normal for lodging expenses.
