It would be 11w^(2) -242w
Answer:
absolute value its written as:
| expression | > x
*> written can also be < , ≥ , or ≤
| | (two vertical lines on both sides of something) indicate absolute value
(absolute value considers the space between a number and 0;
| x | = 3
then x could be = 3 or = -3
you can also think of anything inside | | to be written as positive;
| 3 | = 3
| -3 | = 3)
you could also right, from this example: | x | > 3
our value of x could either be greater than 3, or, our x-value is negative (and only the absolute value is greater than 3, meaning that negative -x, is greater than three)
we separate these possibilities into two expressions:
x > 3 - x > 3
· -1 · -1 {inequalities flip direction when multiply by negative}
x < -3
so, x > 3 and x < -3 can be combined:
x > 3 <em>or </em> x < 3
(graph of example attached)
hope this helps!!
Answer:
Step-by-step explanation:
Let be "x" the speed of current (in mph).
According to the exercise, we know that the speed of the steamer in still water is 18 mph, so its speed downstream with the water current is:
Since going downstream it convered the distance between the two ports in 3 hours, then distance is:
[Equation 1]
The speed upstream in mph can be represetend with:
You know that the return trip took 3 hours 40 minutes. Since there are 60 minutes in 1 hour, this time is:
Therefore, the distance travelled upstream is:
[Equation 2]
Make and solve for "x":