1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
liberstina [14]
2 years ago
9

If f left parenthesis x right parenthesis equals x squared minus 3 x plus 5 , then f left parenthesis 4 right parenthesis equals

Mathematics
1 answer:
lord [1]2 years ago
6 0

Answer:

f(4) = 9

Step-by-step explanation:

f left parenthesis x right parenthesis equals x squared minus 3 x plus 5

f(x) = x² - 3x + 5

f left parenthesis 4 right parenthesis equals

f(4) =

f(x) = x² - 3x + 5

When x = 4

f(4) = 4² - 3(4) + 5

= 16 - 12 + 5

= 9

f(4) = 9

You might be interested in
Put the answer as a decimal and explain how you got the answer thank you<br> -1 5/16=?
kogti [31]

Answer:

-1.3125

explanation:

5 0
2 years ago
Read 2 more answers
g A researcher wants to construct a 95% confidence interval for the proportion of children aged 8-10 living in Atlanta who own a
Helga [31]

Answer:

The sample size needed is 2401.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

The margin of error of the interval is:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

Estimate the sample size needed if no estimate of p is available so that the confidence interval will have a margin of error of 0.02.

We have to find n, for which M = 0.02.

There is no estimate of p available, so we use \pi = 0.5

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

0.02 = 1.96\sqrt{\frac{0.5*0.5}{n}}

0.02\sqrt{n} = 1.96*0.5

\sqrt{n} = \frac{1.96*0.5}{0.02}

(\sqrt{n})^{2} = (\frac{1.96*0.5}{0.02})^{2}

n = 2401

The sample size needed is 2401.

7 0
3 years ago
Read 2 more answers
Type the expression that results from the following series of steps:<br> Start with z and add 5.
Simora [160]

Answer:

id k

Step-by-step explanation:

Answer:

Explanation:

Answer:

Explanation:

Answer:

Explanation:

Answer:

Explanation:

Answer:

Explanation:

7 0
2 years ago
Read 2 more answers
Deposit $500 4% interest 2 years
STatiana [176]

Are you looking for the amount after interest gained? If so I believe the answer would be $40.

500 x 0.04 x 2 = 40

7 0
3 years ago
2!/0! = 2, 0 or undefined
Cloud [144]

Answer:

Undefined.

Step-by-step explanation:

Because there is a 0 in the denominator.

3 0
3 years ago
Read 2 more answers
Other questions:
  • How do I solve this<br> Y= -8x+56<br> 2x+2y=56
    9·1 answer
  • See question above<br> 11.5 km<br> 9.5 km<br> 9 km<br> 9.7 km
    14·1 answer
  • Math (will give Brainliest) 1
    8·1 answer
  • 15 POINT!!!!!!!!!!I NEED HELP IM FAILING
    14·2 answers
  • Julio and Jake start their reading assignments the same day. Jake is reading a 152−page-book at a rate of 18 pages per day. Juli
    15·1 answer
  • 5. (9r 3 + 5r 2 + 11r) + (-2r 3 + 9r - 8r 2)
    9·1 answer
  • If y = x - 6 were changed to y = x+8, how would the graph of the new function
    15·1 answer
  • Help me please I will give point to all
    7·1 answer
  • Rodrigo planted flowers in a section of a circular garden as shown. Calculate the closest area of this sector of the garden to t
    15·1 answer
  • SOLVE ASAP PLS I NEED FOR GRADING
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!