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3 years ago

10

Fran is doing an indirect proof with four given statements and one conclusion. How many of these statements must be false based

on her assumption to contradict the assumption and prove the original conclusion?
a. Exactly three
b. All four
c. At least one
d. None of them

1 answer:

nika2105 [10]3 years ago

8 0

None of them d is correct

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Find the missing value to the nearest tenth. tan(x) = 86

polet [3.4K]

The angle 86 makes the tan 14.3

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3 years ago

Can someone please help me

patriot [66]

Answer:

$y = + - \sqrt[4]{ \frac{3}{2} x}$

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3 years ago

PLEASE HELP ASAP THE DETAILS ARE BELOW.What is the value of x?

Aloiza [94]

Answer:

x = 30°.

Step-by-step explanation:

The dashes on the three lines indicate that the three lines are of equal lengths. The smaller triangle made out of the three lines (the one with two vertices on the circumference of the circle and one at the center of the circle) is an isosceles triangle. All three of the triangle's interior angles are 60° since it is isosceles.

The line (the one with arrows on its ends) touches the circle at only one point. That line is a tangent to the circle. That line is perpendicular to the segment that connects the center of the circle to the point of tangency. The angle between the two will be 90°.

The largest triangle includes three angles:

The angle with the center of the circle as its vertice: 60°;
The right angle due to the tangent to the circle: 90°;
The angle x°.

What is the value of x?

The three interior angles of a triangle add up to 180°. As a result,

60° + 90° + x° = 180°

x = 180 - 90 - 60 = 30.

6 0

4 years ago

natita [175]

Hi there!

B would be the answer, because, as you can see, B's rate in vanilla is much higher than any of the other charts, and the difference between each number on the chart is greater as well.

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4 years ago

A population of values has a normal distribution with

Naily [24]

Using the normal distribution, we have that:

For a single value, P(X < 79.1) = 0.5517.

For the sample of n = 155, P(X < 79.1) = 0.9463.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean $\mu$ and standard deviation $\sigma$ is given by:

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

The z-score measures how many standard deviations the measure is above or below the mean.

Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

By the Central Limit Theorem, the sampling distribution of sample means of size n has standard deviation $s = \frac{\sigma}{\sqrt{n}}$ .

The mean and the standard deviation are given, respectively, by:

$\mu = 76.2, \sigma = 22.4$ .

The probability is the <u>p-value of Z when X = 79.1</u>, hence:

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

Z = (79.1 - 76.2)/22.4

Z = 0.13

Z = 0.13 has a p-value of 0.5517.

Hence: P(X < 79.1) = 0.5517.

For the sample of 155, applying the Central Limit Theorem, the standard error is:

s = 22.4/sqrt(155) = 1.8

Hence:

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

Z = (79.1 - 76.2)/1.8

Z = 1.61

Z = 1.61 has a p-value of 0.9463.

P(X < 79.1) = 0.9463.

More can be learned about the normal distribution at brainly.com/question/15181104

#SPJ1

3 0

1 year ago