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3 years ago

which second degree polynomial function has a leading coefficient of -1 an root 4 with multiplicity 2?

2 answers:

4 0

A root of 4 means the factor is (x - 4)
Multiplicity 2 means it has a power of 2 => => (x - 4)^2
Leading Coefficient -1 means it will be reflected opening downward
- (x - 4)^2
-(x^2 - 8x + 16)
-x^2 + 8x - 16

guapka [62]3 years ago

3 0

Answer:

The answer is..

Step-by-step explanation:

D. –x^2 + 8x + 16

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3m^3 3 + 4f + 4 + 2f + 2f^2 2 + 1

damaskus [11]

Answer:

33m^33+2f^22+6f+5

Step-by-step explanation:

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3 years ago

Is the slope for the line below positive or negative

Zina [86]

Answer:

negative

Step-by-step explanation:

positive -> as x increases, y increases

negative -> as x increases, y decreases

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3 years ago

The cost of a plane ticket increases by 12%. After the increase, the ticket costs $616. What was the cost before the increase? E

Zina [86]

The cost before increase was $550.

Step-by-step explanation:

Given,

Increased price of plane ticket = $616

Increase percent = 12%

Let,

x be the original price of ticket.

Now,

The original price is 100% and 12% is increased, therefore;

New price = (100+12)% = 112%

Thus;

$616 is 112% of x.

112% of x = 616

$\frac{112}{100}x=616\\1.12x=616$

Dividing both sides by 1.12

$\frac{1.12x}{1.12}=\frac{616}{1.12}\\x=550$

The cost before increase was $550.

Keywords: division, percentage

Learn more about division at:

#LearnwithBrainly

7 0

3 years ago

A grocery stores studies how long it takes customers to get through the speed check lane. They assume that if it takes more than

Reptile [31]

The probability that a randomly selected customer takes more than 10 minutes will be 8.38%

Explanation

The average or mean $(\mu)$ is 8.56 minutes and standard deviation $(\sigma)$ is 1.04 minutes.

Formula for finding the z-score is: $z= \frac{X-\mu}{\sigma}$

So, the z-score for $X=$ 10 minutes will be.....

$z(X=10)=\frac{10-8.56}{1.04}=\frac{1.44}{1.04}=1.3846... \approx 1.38$

Now, according to the standard normal distribution table, $P(z$ . So.....

$P(X>10)=P(z>1.38)= 1-P(z$

So, the probability that a randomly selected customer takes more than 10 minutes will be 8.38%

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3 years ago

The product of 2 numbers is 36. One of the numbers is 17. What is the other number?

11111nata11111 [884]

Answer:

2.118

Step-by-step explanation:

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3 years ago