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nlexa [21]
3 years ago
13

Given that (1,-8) is on the graph of f(x), find the corresponding point for the function 1/2f(x). PLEASE HELP ME. IM BEGGING YOU

GUYS!!
Mathematics
1 answer:
scoray [572]3 years ago
3 0

Answer:

The corresponding point is (1,-4)

Step-by-step explanation:

we know that

The point (1,-8) is on the graph of f(x)

so

that means

For x=1, f(1)=-8

therefore

For the function 1/2f(x)

For x=1, 1/2f(1)=-8/2=-4

The corresponding point is (1,-4)

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If t follows a t7 distribution, find t0 such that (a) p(|t | < t0) = .9 and (b) p(t > t0) = .05.
Thepotemich [5.8K]

Answer:

a) P(-t_o < t_7

Using the symmetrical property we can write this like this:

1-2P(t_7

We can solve for the probability like this:

2P(t_7

P(t_7

And we can find the value using the following excel code: "=T.INV(0.05,7)"

So on this case the answer would be t_o =\pm 1.895

b) For this case we can use the complement rule and we got:

1-P(t_7

We can solve for the probability and we got:

P(t_7

And we can use the following excel code to find the value"=T.INV(0.95;7)"

And the answer would be t_o = 1.895

Step-by-step explanation:

Previous concepts

The t distribution (Student’s t-distribution) is a "probability distribution that is used to estimate population parameters when the sample size is small (n<30) or when the population variance is unknown".

The shape of the t distribution is determined by its degrees of freedom and when the degrees of freedom increase the t distirbution becomes a normal distribution approximately.  

The degrees of freedom represent "the number of independent observations in a set of data. For example if we estimate a mean score from a single sample, the number of independent observations would be equal to the sample size minus one."

Solution to the problem

For this case we know that t \sim t(df=7)

And we want to find:

Part a

P(|t|

We can rewrite the expression using properties for the absolute value like this:

P(-t_o < t_7

Using the symmetrical property we can write this like this:

1-2P(t_7

We can solve for the probability like this:

2P(t_7

P(t_7

And we can find the value using the following excel code: "=T.INV(0.05,7)"

So on this case the answer would be t_o =\pm 1.895

Part b

P(t>t_o) =0.05

For this case we can use the complement rule and we got:

1-P(t_7

We can solve for the probability and we got:

P(t_7

And we can use the following excel code to find the value"=T.INV(0.95;7)"

And the answer would be t_o = 1.895

5 0
3 years ago
Evaluate: [5(2-6)+3(8÷4)^2]^2
ludmilkaskok [199]
The answer you're looking for will be,

ANSWER: 64.

Steps:
To get this answer, follow the PEMDAS order of operations.

PEMDAS: Parenthesis, Exponents, Multiply, Divide, Add, Subtract.
(IN ORDER IF POSSIBLE)

I hoped this helped, you're welcome :)
4 0
3 years ago
Read 2 more answers
I need help asappppp
Minchanka [31]

Answer:

a = 11, b = 7

Step-by-step explanation:

See picture

Download pdf
6 0
1 year ago
The number below has 2 as a factor. What could the unknown digit be?
Inga [223]

Given that the number, 5,83_ has 2 as a factor.

It implies that the number 5,83_ is an even number

 

The number contains

5 thousands

8 hundreds

3 tens

? units

 

The possible units of an even number are 0, 2, 4, 6, and 8

Therefore, the unknown digit could be 0, 2, 4, 6, or 8

3 0
3 years ago
Read 2 more answers
5x-13=5y+7x<br>4x+15y= negative 10
saul85 [17]

Answer:

X=-14.5 Y=3.2

Step-by-step explanation:

5x-13=5y+7x

subtract 7x from both sides

-2x-13=5y

subtract 5y from both sides

-2x-5y-13=0

add 13 to both sides

-2x-5y=13

<u>SYSTEMS OF EQUATIONS NOW</u>

4x+15y=-10

-2x-5y=13

multiply the second equation by 3

4x+15y=-10

-6x-15y=39

add the equations together to get:

-2x=29

divide both by -2

x=-14.5

Substitute x into one equation

4(-14.5)+15y=-10

-58+15y=-10

add 58 to both sides

15y=48

divide both sides by 15

y=3.2

<em>CHECK YOUR WORK</em>

4(-14.5)+15(3.2)=-10

-58+48=-10

-10=-10

7 0
3 years ago
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