1/2 a dozen pineapple are $50 dollars . mavis purchased 2 1/2 of pineapples how much money did she spend

20

Step-by-step explanation:

because you need to subtract then add then convert it into a 6 and you can get 10 times 2 is 20

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,