Is infinity symbol and 0 all real numbers? ASAP
1 answer:
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Given:
The height of ball is represented by the below function:
To find:
The number of seconds it will take to reach the ground.
Solution:
We have,
At ground level, the height of ball is 0, i.e., .
Taking out greatest common factor.
Splitting the middle term, we get
Using zero product property, we get
and
and
Time cannot be negative, so .
Therefore, the ball will reach the ground after 2 seconds.
Answer: OPTION D.
Step-by-step explanation:
The formula that is used to calculate the slope of a line is:
Where and
are two points on the line.
In this case the student finds the slope of the line that passes trough these points:
You can notice that she writes in the numerator that:
So she chose the point as
and the point
as
.
Then and
in the denominator must be:
Therefore, she did not keep the order of the points the same in the numerator and the denominator.