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Bogdan [553]
3 years ago
12

PLZ HELP, GIVING BRAINLIEST, LOOK AT THE PIC FOR GRAPH!!

Mathematics
2 answers:
Darina [25.2K]3 years ago
7 0

Answer:

The answer to your question is letter C

Step-by-step explanation:

From the graph, we get the center and the radius

- The center is the point shown in the graph and its coordinates are (2, -1).

- The length of the radius is 4 units, from the center we count horizontally the number of squares (4)

Substitution

                    (x - 2)² + (y + 1)² = 4²

or                 (x - 2)² + (y + 1)² = 16

Tatiana [17]3 years ago
4 0

Answer:

A or B

Step-by-step explanation:

Because of the negtive 1

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Find 2.1 x 32<br> Find 2.3 x 5.8<br> Find 7.5 x 23.4
Vladimir [108]

Answer:

69

Step-by-step explanation:

trust me

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3 years ago
Read 2 more answers
Assignment: Find the Volume
olga nikolaevna [1]

Key:

Volume formulas:

• length × width × height

• a³

Step-by-step explanation:

1. 5 * 2 * 7 = 70

2. 10^3 = 1000

3. 7^3 = 343

4. 5 * 1 * 6 = 30

5. 6 * 4 * 2 = 48

-----------------------------------------------------------------------------------------------------------

Answer:

1. 70

2. 1000

3. 343

4. 30

5. 48

8 0
1 year ago
A circle with radius of 1 cm sits inside a 11 cm x 12 cm rectangle.
levacccp [35]
The are of the circle is 3.14
8 0
2 years ago
g The average midterm score of students in a certain course is 70 points. From the past experience it is known that the midterm
spayn [35]

Answer:

0.98 = 98% probability that the average midterm score of these students is at most 75 points.

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

The average midterm score of students in a certain course is 70 points.

This means that \mu = 70

29 students are randomly selected and the standard deviation of their scores is found to be 13.15 points.

This means that \sigma = 13.15, n = 29, s = \frac{13.15}{\sqrt{29}} = 2.44

Find the probability that the average midterm score of these students is at most 75 points.

This is the pvalue of Z when X = 75. So

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{75 - 70}{2.44}

Z = 2.05

Z = 2.05 has a pvalue of 0.98.

0.98 = 98% probability that the average midterm score of these students is at most 75 points.

8 0
3 years ago
Can someone please answer. There is one problem. There's a picture. Thank you!
Mnenie [13.5K]
Use the Sine Law: \frac{sin(A)}{a} = \frac{sin(B)}{b} = \frac{sin(C)}{c}

In this case:
\frac{sin(44)}{17}=\frac{sin(60)}{e}
therefore:
e=17\frac{sin(60)}{sin(44)} \approx 21.2
6 0
3 years ago
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