willis constructed a horizontal shelf that extends perpendicularly from a wall and is held up by a 34-centimeter brace. the shelf makes a 28° angle with the brace as shown. To make the shelf, Willis began with a 55-centimeter piece of wood and then shortened it by cutting a portion off. about how many centimeters did he cut off. A. 21 B. 25 C. 30 D. 34

4sqrt5

step-by-step explanation:

the base has dimensions of 8 x 4, so the diagonal is 64 + 16 square rooted or 4sqrt5.

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!

where are the choices?

i believe the answer is the polygon, heptagon.