Answer:
50 minutes
Step-by-step explanation:
it takes 80 minutes for 5 pipes
so for 1 pipe it will take 5x80=400min
and for 8 pipes it will take 400/8=50min
Answer:
4.002 4.022 4.221
Step-by-step explanation:
dont be mad if i did it wrong cuz that's how i was taught and anyways the smaller one is always bigger according to my teachers
I would say C, because there is 5 filled in out of 8, which 5/8=62.5%, which is not 75! Correct me if I am wrong.
Answer:
100
Step-by-step explanation:
because if you add it all up you will find the sum
[Would be better if you submit these as separate questions]
<span>4x+3y=54
3x+9y=108
multiply upper by 3 and subtract from lower:
3x - 12x = 108 - 162
9x = 54
x = 6
y = 10
2nd one is 36xy, see other question.
x</span>²+3x-18 factors as (x+6)(x-3)<span>
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