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jenyasd209 [6]
2 years ago
12

20 points!!! Which of the following functions represent the graph of? Question and answers linked below, thank you!

Mathematics
1 answer:
Yuki888 [10]2 years ago
7 0

Answer:

the second picture shown

Step-by-step explanation:

it’s has on the x axis (-3,0) and on y axis (0,-2.26)

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The image shows a circle centered at point O. Angle AOB measures 50 degrees. What is the measure of angle ACB?
sveticcg [70]

Answer:

b) ∠ACB = 25 degrees

Step-by-step explanation:

arc BA = 50° because central angle AOB = 50°

∠ACB is inscribed angle of 50°, so it is (1/2)(50) = 25°

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3 years ago
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The area of a triangle is 6 square feet. The base is 3 times its height. What is the base of the triangle?
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3 years ago
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a teacher has given a test to a group of students. the set of scores is: 78, 79, 79, 81, and 83. find the variance for this samp
Delvig [45]

Based on the data set, the variance for this sample of tests is 4

<h3>How to find the variance for this sample of tests?</h3>

The sample of test is given as:

78, 79, 79, 81, and 83.

Calculate the mean, using:

Mean = Sum/Count

So, we have

Mean = (78 + 79 + 79 + 81 + 83)/5

Evaluate

Mean = 80

The variance is calculated as

\sigma^2 = \frac{\sum(x - \bar x)^2}{n-1}

This gives

\sigma^2 = [(78 - 80)^2 + (79 - 80)^2 + (79- 80)^2 + (81- 80)^2 + (83- 80)^2)]/[5 - 1]

Evaluate the numerator and the denominator.

So, we have:

\sigma^2 =16/4

Evaluate the quotient

\sigma^2 = 4

Hence, the variance for this sample of tests is 4

Read more about variance at:

brainly.com/question/15858152

#SPJ1

7 0
2 years ago
Soren solves the quadratic equation x^2 + 8x – 9 = 0 using the quadratic formula. In which step did Soren make an error?
pochemuha

Answer:

step 3 didn't divide by 2

Step-by-step explanation:

in step

\frac{ - 8 +  \sqrt{100} }{2}  =  \frac{ - 8 + 10}{2}  = 1 \\  \frac{ - 8 -  \sqrt{100} }{2}  =  \frac{ - 8 - 10}{2}  =  - 9

8 0
4 years ago
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