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3 years ago

What is the value of a? 27.5 45 90 50

Mathematics

2 answers:

Valentin [98]3 years ago

7 0

90. The measure of an inscribed angle is half of that of the measure of its arc, and the measure of the angle corresponding with arc a is 45. 45*2 is 90, so 90 is the measure of arc a.

weeeeeb [17]3 years ago

6 0

Answer: 90

Step-by-step explanation:

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3 people work full time together on a project, but their total time on the project is to be equivalent to only 1 person working

NikAS [45]

Let x = the amount of time that the third person needs to work on the job to add up to one

1 = 1/2 + 1/3 + x

1 - 1/2 - 1/3 = x

To subtract the fractions we need to put them all over a common denominator. Let's use 3*2 = 6 as the denominator; so 1 = 6/6, 1/2 = 3/6, 1/3 = 2/6:

6/6 - 3/6 - 2/6 = x

1/6 = x

The third person must work 1/6 time on the project.

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3 years ago

Can you write for me some formula of log please? I have a pre-test tomorrow about that

Rasek [7]

Y = log(x-5) + log(x+5)

7 0

3 years ago

In the triangle below, what is the measure of A? 10/ 10 ОА. 60° Op. 180°

Ulleksa [173]

Answer: There is no picture

Step-by-step explanation:In order for people to answer to a certain question you need to have a pic.

6 0

3 years ago

Find the value of x!

Fiesta28 [93]

Answer:

x=12

Step-by-step explanation:

10x-20+6x+8=180

16x-12=180

16x=192

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3 0

2 years ago

Due to normality, the formula for computing z is the same for a single data value, as it is

katrin2010 [14]

Using the Central Limit Theorem, the statement is false, as for the averages of the data values for a sample group, the standard error is $s = \frac{\sigma}{\sqrt{n}}$ , hence, the formula is:

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

While for a single value, it is:

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

In a normal distribution with mean and standard deviation , the z-score of a measure X is given by:

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

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

Hence, the formulas are different, and for an average of the data values for a sample group it is:

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

A similar problem is given at brainly.com/question/24663213

8 0

2 years ago