Answer:
5 or above round up 4 or below round down
15.5
The numbers after the rounded digit becomes zeroes
Hope this helps
Step-by-step explanation:
Answer:
im not learning this yet so i dont know srry
Answer:
y =
Step-by-step explanation:
x^2 + z^2 = 29^2
x^2 = y^2 + 9^2
y^2 + 20^2 = z^2
29^2 - z^2 = y^2 + 81 (equating for x^2 from eqn 1 and 2)
substitute 3rd eqn in 4th
29^2 - (y^2 + 20^2) = y^2 + 81
841 - y^2 - 400 = y^2 + 81
441 = 2y^2 + 81
360 = 2y^2
y^2 = 180
y =
=
y =
Answer: I really don't understand B. but i think the answer is C