Answer:
84 feet of ribbon is needed
Step-by-step explanation:
Given : Ribbon is sold by the foot. If Heather is making 84 bows, how many feet of ribbon must she buy?
Explanation : If ribbon is sold by the foot, then if Heather is making 84 bows, then Heather would need 84 feet
To put in simple terms - 1 bow needs 1 foot of ribbon
This makes a right triangle with hypotenuse x+2 and legs 10 and x
10²+x²=(x+2)²
100 + x² = x²+4x+4
100=4x+4
4x=96
x=24, the height we are looking for
Your answer is C
hope it helps
1.
the x value of the vertex in form
ax^2+bx+c=y
is
-b/2a
so
-2x^2+8x-18
x value of vertex is
-8/(2*-2)=-8/-4=2
plug it in to get y value
-2(2)^2+8(2)-18
-2(4)+16-18
-8-2
-10
vertex is at (2,-10)
or you could complete the square to get into y=a(x-h)^2+k, where the vertex is (h,k)
so as follows
y=(-2x^2+8x)-18
y=-2(x^2-4x)-18
y=-2(x^2-4x+4-4)-18
y=-2((x-2)^2-4)-18
y=-2(x-2)^2+8-18
y=-2(x-2)^2-10
vertex is (2,-10)
5.
vertex is the time where the speed is the highest
at about t=10, the speed is at its max
h divided by 8 would be the verbal statement
