Brandon can paint a fence in 12 hours and elaine can paint the same fence in 11 hours. how long will they take to paint the fence if they work together?
a) 5 13/24 hr
b) 5 ¾ hr
c) 11 ½ hr
d) 5 17/23 hr

square pyramid

step-by-step explanation:

square prism looks like nothing like that

triangular prism has a rectangular base instead of a square base

tetrahedron has a triangular base

a. 12.5 kg

step-by-step explanation:

f = ma

so

m = f/a = (2500 n)/(200 m/s²) = 12.5 kg

1 n = 1 kg·m/s²

21

jk it's 20

step-by-step explanation:

27/4x^6 y^8

step-by-step explanation:

4(3x^2y^4)^3 (2x^3y^5)^4

=

108x^6 y^12 /16x^12 y^20

=

108 /16x^6 y^8

=

27 /4x^6 y^8