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Gennadij [26K]
3 years ago
12

Determine the measure of will give brainliest

Mathematics
2 answers:
Mnenie [13.5K]3 years ago
6 0

Answer:

im not one hundred percent sure its   57  because they are vertical angels and when they are vertical angles they are congruent which means they are the same on both sides so i think the answer is 57

Step-by-step explanation:

Xelga [282]3 years ago
5 0

Step-by-step explanation:

Tha angle b is 57 degree !!

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Ramonita measured the height of a tree to be 11 feet. One month later, she measured the tree to be 11.75 feet tall. Two months a
DedPeter [7]
Hi.

To formally answer your question:

D. y = 0.75<em>x</em> + 11

We can prove this by substituting <em>x</em> with 1 (the initial measurement)

y = 0.75(1) + 11 = 11.75

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3 0
3 years ago
Multiplying a vector by a plain number is referred to as scalar multiplication.<br> True or false?
Yuki888 [10]

9514 1404 393

Answer:

  True

Step-by-step explanation:

In scalar multiplication, each component of the vector is multiplied by the scalar. The description is True.

3 0
2 years ago
What is the product of the complex number z1 and it’s conjugate? PLEASE HELP GRAPH in picture
12345 [234]

Answer:

The product is 25

Step-by-step explanation:

we know that

The complex number z1 is equal to

z1=(-4-3i)

we know that

To find the complex conjugate of (-4 - 3i) we change the sign of the imaginary part

so

The conjugate is equal to (-4+3i)

therefore

(-4-3i)(-4+3i)=16-9(-1)=25

3 0
3 years ago
Read 2 more answers
The statistics of nequals22 and sequals14.3 result in this​ 95% confidence interval estimate of sigma​: 11.0less thansigmaless t
dimulka [17.4K]
Answer: no, the confidence interval for the standard deviation σ cannot be expressed as 15.7 \pm 4.7

There are three ways in which you can possibly express a confidence interval:

1) inequality
The two extremities of the interval will be each on one side of the "less then" symbol (the smallest on the left, the biggest on the right) and the symbol for the standard deviation (σ) will be in the middle:
11.0 < σ < 20.4
This is the first interval given in the question and it means <span>that the standard deviation can vary between 11.0 and 20.4

2) interval
</span>The two extremities will be inside a couple of round parenthesis, separated by a comma, always <span>the smallest on the left and the biggest on the right:
(11.0, 20.4)
This is the second interval given in the question.

3) point estimate </span><span>\pm margin of error</span>
This is the most common way to write a confidence interval because it shows straightforwardly some important information. 
However, this way can be used only for the confidence interval of the mean or of the popuation, not for he confidence interval of the variance or of the standard deviation.

This is due to the fact that in order to calculate the confidence interval of the standard variation (and similarly of the variance), you need to apply the formula:
\sqrt{ \frac{(n-1) s^{2} }{\chi^{2}_{\alpha / 2} } } \leq \sigma \leq \sqrt{ \frac{(n-1) s^{2} }{\chi^{2}_{1 - \alpha / 2} } }

which involves a χ² distribution, which is not a symmetric function. For this reason, the confidence interval we obtain is not symmetric around the point estimate and the third option cannot be used to express it.
4 0
2 years ago
Greg has two number cubes, each numbered from 1 to 6. He rolls both cubes at the same time. What is the probability that the tot
Mrrafil [7]

Answer:

69 nice

Step-by-step explanation:

u take 4 and make it 69

6 0
3 years ago
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