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Kamila [148]
2 years ago
6

Which of the following is the graph of f(x) = x2 − 5x + 4? (4 points)

Mathematics
1 answer:
koban [17]2 years ago
4 0

.........

....

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Find the surface area of the square pyramid shown below.<br><br> (15 points)
harkovskaia [24]

Answer:

340

Step-by-step explanation

Base=10x10=100

Sides= {(12x10)/2}x4=240

Add sides plus base, 240+100=340

7 0
2 years ago
Cristina is asked to construct a triangle wilts a 45 angle and a 65 angle. How many different triangles could she draw with thes
LuckyWell [14K]

Answer:

cristiba is asked to construct only exactly one triangle

6 0
3 years ago
A random sample of 28 statistics tutorials was selected from the past 5years and the percentage of students absent from each one
Vesna [10]

Using the t-distribution, the 90% confidence interval for the mean number of absences is given by: (9.22, 11.60).

<h3>What is a t-distribution confidence interval?</h3>

The confidence interval is:

\overline{x} \pm t\frac{s}{\sqrt{n}}

In which:

  • \overline{x} is the sample mean.
  • t is the critical value.
  • n is the sample size.
  • s is the standard deviation for the sample.

The critical value, using a t-distribution calculator, for a two-tailed 90% confidence interval, with 28 - 1 = 27 df, is t = 1.7033.

Researching this problem on the internet, the parameters are given by:

\overline{x} = 10.41, s = 3.71, n = 28.

Hence the bounds of the interval are given by:

  • \overline{x} - t\frac{s}{\sqrt{n}} = 10.41 - 1.7033\frac{3.71}{\sqrt{28}} = 9.22
  • \overline{x} + t\frac{s}{\sqrt{n}} = 10.41 + 1.7033\frac{3.71}{\sqrt{28}} = 11.60

The 90% confidence interval for the mean number of absences is given by: (9.22, 11.60).

More can be learned about the t-distribution at brainly.com/question/16162795

#SPJ1

8 0
1 year ago
The racial girls to boys and my third hour class is 2:3 . There are 12 boys in my class how many girls are there
jonny [76]
Steps:
1. Do a proportion
2/3 times x/12
2. Do 12 times 2=24
3. Divide 24 by 3
4. Your answer is 8 girls
Or you could do it this way
Steps:
1. You could have just multiplied the 2 by a 4 to get 8.12 boys divided by 3 boys is 4. That means you multiple the two by 4 to get the girls.
4 0
3 years ago
Read 2 more answers
What is 2x-3/4(2x+80)
nata0808 [166]

Answer:

your face hahahahhahahahah it's funny ik

3 0
3 years ago
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