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pashok25 [27]
3 years ago
8

If < D is a right angle and < E is a right angle, and you said that < D is congruent to < E, the reason would be ___

_. Select one: a. Supplementary Angles are congruent b. All right angles are congruent c. Complementary Angles are congruent
Mathematics
1 answer:
SVEN [57.7K]3 years ago
5 0

Answer:

(B)All right angles are congruent

Step-by-step explanation:

Given that:

\angle D$ is a right angle, and\\\angle E$ is a right angle\\\\\angle D=90^\circ\\\angle E=90^\circ\\$Therefore: \angle D \cong \angle E

The reason for this congruency is that both are right angles and in fact, all right angles are congruent.

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What does it mean to be a standard deviation away from the mean?
Helga [31]
Mean can also be thought of as average.

Standard deviation is a bit more difficult to describe. It is a statistic that can help measure how spread out the data gets.

Depending on the distribution, data within 1 standard deviation of the mean can be considered fairly common and expected. Essentially it tells you that data is not exceptionally high or exceptionally low.

8 0
3 years ago
A superintendent of a school district conducted a survey to find out the level of job satisfaction among teachers. Out of 53 tea
frez [133]

Answer:

b. 1.15

Step-by-step explanation:

The z statistics is given by:

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

In which X is the found proportion, p is the expected proportion, and s, which is the standard error is s = \sqrt{\frac{p(1-p)}{n}}

Out of 53 teachers who replied to the survey, 13 claim they are satisfied with their job.

This means that X = \frac{13}{53} = 0.2453

She find that the proportion of satisfied teachers nationally is 18.4%.

This means that p = 0.184

Standard error:

p = 0.184, n = 53.

So

s = \sqrt{\frac{0.184*0.816}{53}} = 0.0532

Z-statistic:

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

Z = \frac{0.2453 - 0.184}{0.0532}

Z = 1.15

The correct answer is:

b. 1.15

5 0
4 years ago
Please help me I will give Brainlest
nalin [4]

Problem 3

Circumference = pi*diameter

C = pi*d

C = 3.14*7.6

C = 23.864

C = 23.9

<h3>Answer:  23.9 cm</h3>

=======================================

Problem 4

A = area of square

A = side*side

A = 8*8

A = 64 square cm

B = area of circle

B = pi*r^2

B = 3.14*(5.5)^2 .... radius = 5.5 is half of diameter = 11

B = 94.985

C = area of shaded region

C = B - A

C = 94.985 - 64

C = 30.985

<h3>Answer:  30.985 square cm</h3>

=======================================

Problem 5

diameter = 6

radius = 3

area = pi*radius^2

A = pi*r^2

A = pi*3^2

A = 9*pi

A = 9*3.14

A = 28.26

<h3>Answer:  28.26 square millimeters</h3>
5 0
3 years ago
What is the mean for the data shown in the line plot?<br><br> 5 and 7<br> 5<br> 4<br> 8
kolezko [41]

Answer:

The mean of the data: 5,7,5,4,8 is 5.8

Step-by-step explanation:

To find the mean, add up the numbers, then divide them by the number of data points. So 5 + 7 + 5 + 4 + 8 = 29, and 29 divided by 5 is 5.8

3 0
3 years ago
Which statement is true about the polynomial
vaieri [72.5K]

The polynomial 6st⁹ – 3s⁶t² – 6t⁷ has 3 terms and the degree of the polynomial is 10. Then the correct option is B.

<h3>What is polynomial?</h3>

A polynomial expression is an algebraic expression with variables and coefficients.

The polynomial is given below.

5s⁶t² + 6st⁹ – 8s⁶t² – 6t⁷

Then polynomial can be arranged as

⇒ 6st⁹ + 5s⁶t² – 8s⁶t² – 6t⁷

⇒ 6st⁹ – 3s⁶t² – 6t⁷

The polynomial 6st⁹ – 3s⁶t² – 6t⁷ has 3 terms and the degree of the polynomial is 10.

Then the correct option is B.

More about the polynomial link is given below.

brainly.com/question/17822016

#SPJ1

6 0
3 years ago
Read 2 more answers
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