3 years ago

Is x greater less than it equal to 46

Mathematics

1 answer:

garik1379 [7]3 years ago

3 0

Answer:

well it depends if its used in a problem

Step-by-step explanation:

if its a minus it less if its a + it greater or add t up to see if its equal to or which one it is

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Three persons EB and C work together on a job and finish it finish it in 18 days if E and be working together can finish the job

nikitadnepr [17]

Answer: 30 days

Step-by-step explanation:

Working together, E & B get 1/45 of the job done per day

Working alone, C gets 1/x of the job done per day

Working together, E, B, & C get 1/18 of the job done per day.

$EB:\dfrac{1}{45}\qquad C: \dfrac{1}{x}\qquad EBC:\dfrac{1}{18}\\\\\\\\EB+C=EBC\\\\ \dfrac{1}{45}\ +\dfrac{1}{x}=\dfrac{1}{18}\\\\\\(45\cdot 18\cdot x)\bigg(\dfrac{1}{45}+\dfrac{1}{x}=\dfrac{1}{18}\bigg)\\\\\\.\qquad \qquad 18x+810=45x\\\\.\qquad \qquad \qquad 810=27x\\\\.\qquad\qquad \qquad \large\boxed{30=x}$