Maria has books that she wants to arrange in piles. The books have different thicknesses. This line plot shows the thickness of each book. She piles the four thinnest books on top of each other. How thick is the pile?

1/8 3/16 3/4

step-by-step explanation:

you put them as all the same denominator and multiply

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet

this would be 35. 35 + 5 = 40. you take the known constant and subtract by the answer of the equation and you get y.