Aramp is 17 ft long , rises 8 ft above the floor, and covers a horizontal distance of 15 ft, as shown in the figure

A ramp is 17 feet long, rises 8 feet above the floor,

and covers a horizontal distance of 15 feet,

as shown in the figure.

(First box)

A. Sin B = 8/17

B. Cos B = 15/17

C. Sin A = 15/17

(Second box)

A. Sin B = 8/17

B. Cos B = 15/17

C. Cos A = 8/17

Hope this helps!

3. parallelogram

step-by-step explanation:

we turn each of our sides into direction vectors

ab=b-a=(3 - 7, 1 - 0) = (-4, 1)

bc=c-b=(1,6)

cd=d-c=(4,-1)

da=a-d=(-1,-6)

we see how the opposite sides have negated direction vectors; this is characteristic of a parallelogram.   we have congruent sides ab=cd and bc=da with unequal lengths because 1^2+6^2 is different from (-4)^2+1^2.   so it's not a square or a rhombus.  

we check the dot product of direction vectors of adjacent sides.   we have

ab dot bc = -4(1) + 1(6) = 2

that's not zero so the sides are not perpendicular.   we've ruled out rectangle.

the direction vectors indicate two pairs of congruent parallel sides, so we choose parallelogram over trapezoid.

3-4

step-by-step explanation:

the answer is 3-4 because both 45 and 60 has a multiple of 15.

45/3=15

60/4=15

therefore the odds against selecting a red is 4-3