I gave the answer earlier, but here is the solution again, along with a graph proving it is correct.
Answer:
1.125 h = 1h 7.5 min = 1 h 7 min 30 sec
Step-by-step explanation:
John makes 1/1.5 work per h.
His partner makes 1/4.5 work per h.
Together they make (1/1.5 + 1/4.5) = (3/4.5 + 1/4.5) = 4/4.5 work per h.
They will work
1 : 4/4.5 = 4.5/4 = 1.125 h = 1 h + 0.125 h = 1h + 0.125h*60min/1h =
=1h 7.5 min = 1 h 7 min 30 sec
Hopefully this helps, x=35 because all angles has of a triangle has to add up to 180
Well you multiply the -4 to the 9 using and you will get -36 then you divide by -6 and you will get 6 simple as that
√(4²+4²)=4√2
√(4√2)²+4²=4√3
answer is 4√3