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1 year ago

What is the value of the expression below? (7123? O A7 O B. 2 O c. O D. 14

Mathematics

1 answer:

posledela1 year ago

3 0

The power of a power

The power of a power is related with the multiplication of the exponents. For example:

$(2^4)^5=2^{4x5}=2^{20}$

In this case

$(7^{\frac{1}{2}})^2=7^{\frac{1}{2}\cdot2}$

Then, the exponentes 1/2 and 2 are multiplied.

Since

$\frac{1}{2}\cdot2=1$

Then,

$\begin{gathered} (7^{\frac{1}{2}})^2=7^{\frac{1}{2}\cdot2} \\ =7^1=7 \end{gathered}$

Then, the answer is 7.

Answer- A. 7

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If a person flips a coin and then rolls a six dash sided die, describe the sample space of possible outcomes using Upper H comm

xenn [34]

Answer:

Sample Space (S) = { (1,H), (1,T), (2,H), (2,T), (3,H), (3,T), (4,H), (4,T), (5,H), (5,T), (6,H), (6,T) }

Step-by-step explanation:

If a person flips a coin; the possible outcomes of flipping a coin are { Head (H), Tail (T) }

If a person rolls a six dash side die, the possible outcomes of rolling a dice are { 1, 2, 3, 4, 5, 6 }

Now, If a person flips a coin and then rolls a six dash side die;

The Sample Space (S) which is the set of all the possible outcomes of the activities carried out can be described as follows:

DIE COIN →

↓

H T

1 (1,H) (1,T)

2 (2,H) (2,T)

3 (3,H) (3,T)

4 (4,H) (4,T)

5 (5,H) (5,T)

6 (6,H) (6,T)

Sample Space (S) = { (1,H), (1,T), (2,H), (2,T), (3,H), (3,T), (4,H), (4,T), (5,H), (5,T), (6,H), (6,T) }

3 0

3 years ago

Please help it’s a test and I can’t get logged out

HACTEHA [7]

Answer:

the anwer is B ( i mean second option)

And you can try it

you will find ;

$y = \frac{x}{3} - 1$

HAVE A NİCE DAY

Step-by-step explanation:

GREETİNGS FROM TURKEY ツ

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3 years ago

What is the difference between the following two regression equations? ModifyingAbove y with caret equals b 0 plus b 1 xy=b0+b1

Leona [35]

Answer:

A. The first equation is for sample data; the second equation is for a population.

Step-by-step explanation:

The first equation is y = $b_0 + b_1x$ , this is the equation for sample data as the intercept ( $b_0$ ) and the slope parameter( $b_1$ ) both are calculated then we have got this and these values are not taken as given.

The Second equation is $y = \beta _0 +\beta _1x$ , this is the equation for population data as we can't calculate these $\beta _0$ and $\beta _1$ as we take these values as given and also we do testing for $\beta$ parameter using t test and it is sure that testing is always done on population data not on sample data.