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2 years ago

1.

Mathematics

1 answer:

AleksAgata [21]2 years ago

3 0

Answer:

D. y = 58

Step-by-step explanation:

Answer:

The value of the polynomial is 58 for x = 6.

Step-by-step explanation:

Here, the given quadratic function polynomial is given as:

or,

Now, to find the value of y, when x = 6

⇒

= 2(36 - 6 -1) = 2(29)

= 58

⇒y(6) = 58

Hence, the value of the given polynomial is 58 for x = 6.

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Identify the statement(s) that are both biconditional and false. Three points are not in the same plane if and only if exactly o

Marysya12 [62]

Answer:

Step-by-step explanation:

1) Three points are not in the same plane if and only if exactly one line passes through them.

It is biconditional and false because more than one plane can pass through three points

2)Exactly one line passes through three points if the points are in an infinite number of planes.

It is biconditional and true because three points on same line will be in more than one plane and if they are not in the same plane then connect them and it will form a triangle which is in only one plane

3). an infinite number of planes pass through the same three points if and only if the points are not on the same line.

It is biconditional and false because more than one plane passes through them So, infinite no. of planes passes through them

4). three points on the same line if and only if exactly one plane passes through them.

It is biconditional and false because more than one plane passes through them So, infinite no. of planes passes through them

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2 years ago

What is the answer to 4[2(6 · 4) - 8 · 6]

Airida [17]

Answer:

The answer is: 0

Hope this helps!

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2 years ago

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A recent study focused on the number of times men and women send a Twitter message in a day. The information is summarized below

jok3333 [9.3K]

Answer:

The value of the test statistic = 2.58

Test statistic Z = - 4.805

|Z| = 4.805 > 2.58

Null hypothesis is rejected The value of the test statistic = 2.58

There is significant difference between in the mean number of times men and women send a Twitter message in a day

Step-by-step explanation:

Step(i):-

Sample size of men n₁ = 25

mean of the first sample x₁⁻ = 20

Standard deviation of the first sample σ₁ = 5

Sample size of women n₂ = 30

mean of the second sample x₂⁻ = 30

Standard deviation of the first sample σ₂ = 10

Level of significance ∝= 0.01

<u>Step(ii)</u>:-

Null Hypothesis : H₀: There is no significant difference between in the mean number of times men and women send a Twitter message in a day

Alternative Hypothesis :H₁:There is significant difference between in the mean number of times men and women send a Twitter message in a day

Test statistic

$Z = \frac{x^{-} _{1} - x^{-} _{2} }{\sqrt{\frac{S.D_{1} ^{2} }{n_{1} }+\frac{ S.D_{2} ^{2}}{n_{2} } } }$

$Z = \frac{20 - 30 }{\sqrt{\frac{(5)^{2} }{25 }+\frac{ (10)^{2} }{ 30} } }$

Z = $\frac{-10}{2.081} = - 4.805$

The value of the test statistic = 2.58 C

|Z| = 4.805 > 2.58

Null hypothesis is rejected The value of the test statistic = 2.58

<u>Conclusion:</u>-

There is significant difference between in the mean number of times men and women send a Twitter message in a day

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2 years ago

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2 years ago

Please help. I don’t know the answer.

atroni [7]

(y^12)/5

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2 years ago

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