5. The shaded area on the grid represents the part of a rectangular floor where tile has been installed. Each square in the grid has the same dimensions.
What is the ratio of shaded boxes to unshaded boxes?
a:11/20
b:9/20
c:11/9
d:9/11

need more info

step-by-step explanation:

alright so i think for this one it would to draw it out. this may be hard for me to try and draw, but i will do my best on here:

        r

  /       |     \

notice how it forms 2 triangles inside one bigger triangle.

so if we know the angle spr is the same as psr that is saying the measure of angle p is the same as angle s. this means the big triangle psr is either isosceles or equilateral. in both cases, the triangle is perfectly symmetrical when split down the middle, which is in this case rq. because we know it is perfectly symmetrical on both sides, we know that the two triangles inside the bigger one are equal.

11) obtuse

13)right

15) acute

720 oranges were in the shipment.