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3 years ago

Omg please help im in quiz pleaseeeeeee

Mathematics

2 answers:

elena-14-01-66 [18.8K]3 years ago

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maw [93]3 years ago

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Is it 3:5 yvghvgvvgbj

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What are the domain & range of the graph?

matrenka [14]

Try this option:

domain: x∈[-4;+∞); range: y∈[0;+∞).

6 0

3 years ago

In quadrilateral ABDC, AB ∥ CD. Which additional piece of information is needed to determine that ABDC is a parallelogram? AB ≅

torisob [31]

Answer:

Step-by-step explanation:

For any quadrilateral to be a parallelogram

i) either both the pairs of opposite sides must be equal

ii) Both the pairs of opposite sides must be parallel

iii) Opposite pairs of angles must be equal

iv) Diagonals must bisect each other.

v) A pair of opposite sides must be parallel and equal

Here we are already given that AB || CD

So either we should be given that AD || BC

or we must be given that AB = CD

Here it is given AB = CD as an option.

So Option A) or the first option is the right answer that AB ≅CD is needed to prove ABCD is a parallelogram.

6 0

3 years ago

What are the missing terms???

Ivenika [448]

Answer:

$x^{4} +18x^{2} +81=(x^{2} )^{2}+2(9)^{2} +(3)^{4} \\x^{4} +18x^{2} +81=(x^{2} +9)^{2}$

Step-by-step explanation:

This is just a perfect square

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3 years ago

The circle graph shows the percent of time you spent on different activities after school. which choice below is false?

Flauer [41]

Answer:

"you spend most of the time doing homework" is false

Step-by-step explanation:

for the sentence above to be true, its segment would have to be more than half the chart

6 0

3 years ago

It has been observed that a large percentage of professional hockey players have birthdays in the first part of the year. It has

vagabundo [1.1K]

Answer:

$\mu = 127$

$\sigma = 9.76$

$z-score = 3.18$

Yes, 158 players out of 508 is an unusual number of men born in the first 3 months of the year because the z score of 158 is greater than 3( Note :the probability of z-score = 3 is 97%)

The correct option is option 3

Step-by-step explanation:

From the question we are told that

The population proportion is p = 0.25

The sample size is n = 508

Generally the mean is mathematically represented as

$\mu = np$

=> $\mu = 508 * 0.25$

=> $\mu = 127$

Generally the standard deviation is mathematically represented as

$\sigma = \sqrt{ np (1-p)}$

=> $\sigma = \sqrt{ 508 * 0.25 (1-0.25)}$

=> $\sigma = 9.76$

Generally the z-score of 158 is mathematically represented as

$z-score = \frac{158 - 127}{9.76}$

=> $z-score = \frac{158 - 127}{9.76}$

=> $z-score = 3.18$

Yes, 158 players out of 508 is an unusual number of men born in the first 3 months of the year because the z score of 158 is greater than 3( Note :the probability of z-score = 3 is 97%)

What this means is that the almost the whole professional hockey league player are born in the first month which is unusual

7 0

3 years ago

Omg please help im in quiz pleaseeeeeee​

Omg please help im in quiz pleaseeeeeee