Answer:
BELOW
Step-by-step explanation:
SO lets think about the information they give us.
Khan acadamy says that we have -3 x and 5 x.
So that just means that the quadratic at 0 has one curved line at -3x and another at 5x. Note that you should put the green dot on the top right on either -3x or 5x to do this.
Then they say the minimum is -4 y.
This just means that when x is 0, y should be -4. Note that you should put the midddle bottom green dot at -4 y exactly on the black line, which is at 0 x.
Green dot top right: (-3 or 5, 0)
Green dot middle bottom: (0, -4)
Hope this helps! ;)
First get the tangent vectors by differentiating r1 and r2

Evaluate at t=0

Use identity for angle between 2 vectors:

Evaluate dot product and unit vectors:

Sub into identity and solve for theta:

Answer:
Angle of intersection is about 79 degrees.
Answer:
the numbers aren't clear can you enlarge the screenshot?
Step-by-step explanation:
Perimeter means the sides add up to 12.
Rectangles have two pairs of equal sides.
2(one side) + 2(another side) = 12
2 (one side + another side) = 12
(one side + another side) = 6
To draw a rectangle with a perimeter of 12 units, the two adjacent sides must add up to 6.
1 + 5
2 + 4
3 + 3