Please need help fast! y= -5x^2 +9 in vertex form thx in advance

Mathematics

1 answer:

ira [324]1 year ago

4 0

Answer: (0,-9)

Step-by-step explanation:

I put it in math-way hope this helps

You might be interested in

Enter the terms and the coefficients of the expression.

Alja [10]

Answer:

terms: 3x,+90y,-70

coefficient:3,-90,-70

4 0

3 years ago

Claire bought a pair of jeans that regularly cost $50 on sale for $40. What was the percent decrease in price?

Len [333]

The answer is 20%

If 50 is your 100%, take 100 and 90 for example it would be obvious that is it 10% off, so with 50 since it is half of 100 you double the 10% which will be 20%. :)

5 0

3 years ago

Barron's reported that the average number of weeks an individual is unemployed is 17.5 weeks. Assume that for the population of

Olin [163]

Answer:

$P(16.5$

And using the normal standard table or excel we find the probability:

$P(-1.768< Z< 1.768) = P(Z$

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Solution to the problem

Let X the random variable that represent the avergae number of weeks an individual is unemployed of a population, and for this case we know the distribution for X is given by:

$X \sim N(17.5,4)$