The equation below describes a parabola. If a is negative, which way does the parabola open? x = ay2
2 answers:
Answer:
The given parabola opens to the left.
Step-by-step explanation:
We are given,
The equation of the parabola is
If in the parabola,
<em>1. If 'a' is positive, then the parabola opens upwards or right.</em>
<em>2.</em><em> If 'a' is negative, then the parabola opens downwards or left.</em>
Moreover,
<em>3. If x is squared, then the parabola opens upwards or downwards.</em>
<em>4. </em><em>If y is squared, then the parabola opens left or right.</em>
Now, as we are given the parabola having and 'a' is negative.
Thus, from the points 4 and 2, we get,
The given parabola opens to the left.
You might be interested in
Answer:
A
Step-by-step explanation:
Using the pythagorean theorem,
we plug the numbers in;
9+36=c^2
45=c^2
sqr root of 45 is
next find the positive perfect sqr root of 45 which will be 9.
9 goes into 45 5 times so it will be
Sqr root of 9 is 3 so it will be
Answer:
If we find the individual probabilities we gotL
And replacing we got:
Step-by-step explanation:
Previous concepts
The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".
Solution to the problem
Let X the random variable of interest, on this case we now that:
The probability mass function for the Binomial distribution is given as:
Where (nCx) means combinatory and it's given by this formula:
For this case we want to find this probability:
And we can use the complement rule for this case:
If we find the individual probabilities we gotL
And replacing we got: