Aschool bought several pairs of skis, each costing $40 and several pairs of skates, each costing $50. the cost of the whole purchase was $600. how many pairs of skates were purchased if there were 3 more pairs of skates than pairs of skis?

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,

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