3 years ago

Find x: 3x=9x-18 Both have to be the same

Mathematics

1 answer:

Paul [167]3 years ago

3 0

Hello!!

3x - 9x = -18
-6x = -18
6x = 18
x = 18/6 = 3

Hope this helps!! Let me know if you have ANY questions.

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Karen is buying pens and pencils for the new school year. She wants to have no more than 25 writing utensils in all. She also wa

bezimeni [28]

For this case, the first thing we must do is define variables.
We have then:
x: number of pens
y: number of pencils
We now write the system of inequations:
$x + y \leq 25

y \geq (x - 3) ^ 2
$
The solution to the system of inequations is given by the shaded region.
Note: see attached image.