Help asap 7(8+4k)+12
2 answers:
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Answer:
Danielle drove 3 hours
Step-by-step explanation:
Suppose Heather moved in the x direction.
Then Danielle moved in the opposite direction, that is, she moved in the -x direction.
Let's call ,
,
at the speed, distance and time that I code Heather
Let's call ,
,
at the speed, distance and time Danielle codes.
Observe the following diagram:
(x) Heather <------ --------- hospital ----------
-----------> Danielle (-x)
So:
We know that after 4 hours the distance between Heather and Danielle was 290 km.
That is to say:
We know that
We already know , the distance from the hospital to Heather, so we can find
and thus know
So:
Then:
Answer:
$9.83
Step-by-step explanation:
Tax= 6% of 9.27
Amount paid by her = 9.27 + 0.5562 = 9.8262 = $9.83
Answer:
3 is the root of the equation.
Step-by-step explanation:
We have to find the root of the polynomial equation x(x-2)(x+3)=18.
We can find the same by using a graphing utility and the system of equations.
We can make two equations which are given by
Now, we plot the graph of these equations and the x-coordinate of the intersection point will be the root of the equation.
the graph has been shown in the attached file.
The intersection point is (3, 18) and the x-coordinate is 3.
Therefore, 3 is the root of the equation.
