Answer:
$15... 20-15=5
Step-by-step explanation:
Her friend more rich than her, lol
Answer:
1 ..>5
2.. 30(1)
3.. Sorry
I don't know properly 3 answer
Uhh this isn't very clear but I think the answer would be measurement or something along those lines
Using quadratic function concepts, it is found that Abby made a mistake on the coordinates of the vertex, which are (-4,1).
----------------------
- A quadratic function is defined by:

- The y-intercept is given by point:

- The vertex is given by:
. - The axis of symmetry is:

----------------------
The function given is:

- Which is a quadratic equation with:
.
, thus, the y-intercept is (0, -15).

- Thus, the <u>x-coordinate of the vertex</u> is x = -4, which is the same as the <u>axis of symmetry</u>.

- The vertex is given by: (-4,1).
A similar problem is given at brainly.com/question/14680175
Answer:
see explanation
Step-by-step explanation:
let w represent the width then length = w + 7
The perimeter of the rectangle = 2w + 2(w + 7) = 2w + 2w + 14 = 4w + 14
The perimeter is given as 54 m, thus
4w + 14 = 54 ( subtract 14 from both sides )
4w = 40 ( divide both sides by 4 )
w = 10
Thus
width of playground = w = 10 m
length of playground = w + 7 = 10 + 7 = 17 m