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solmaris [256]
3 years ago
9

7.34 in scientific notation

Mathematics
1 answer:
Allushta [10]3 years ago
6 0

Answer:

7.34×10⁰

Unless you're missing something in your question then that'd be it I guess... There isn't really a reason to put 7.34 in scientific notation though, so I'm assuming something isn't loading for me (or the question was changed).

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Given below are seven observations collected in a regression study on two variables, x (independent variable) and y (dependent v
natka813 [3]

Answer:

Step-by-step explanation:

Hello!

Given the independent variable X and the dependent variable Y (see data in attachment)

The regression equation is

^Y= b₀ + bX

Where

b₀= estimation of the y-intercept

b= estimation of the slope

The formulas to manually calculate both estimations are:

b= \frac{sumXY-\frac{(sumX)(sumY)}{n} }{sumX^2-\frac{(sumX)^2}{n} }

b_0= \frac{}{y} - b*\frac{}{x}

n=7

∑X= 42

∑X²= 292

∑Y= 49

∑Y²= 403

∑XY= 249

\frac{}{y} = \frac{sumY}{n} = \frac{49}{7} = 7

\frac{}{x} = \frac{sumX}{n} = \frac{42}{7} = 6

b= \frac{249-\frac{42*49}{7} }{292-\frac{42^2}{7} }= -1.13

b_0= 7- (-1.13)*6= 13.75

^Y= 13.75 - 1.13X

Using the raw data you can calculate the coefficient of determination as:

R^2= \frac{b^2[sumX^2-\frac{(sumX)^2}{n} ]}{[sumY^2-\frac{(sumY)^2}{n} ]}

R^2= \frac{(-1.13)^2[292-\frac{(42)^2}{7} ]}{[403-\frac{(49)^2}{7} ]}= 0.84

This means that 84% of the variability of the dependent variable Y is explained by the response variable X under the model ^Y= 13.75 - 1.13X

I hope this helps!

6 0
4 years ago
Please help quickly! Will give points to 1st right answer!
Kobotan [32]

The domain of the logarithm function is (0, ∞) and the range of the logarithm function will be (-∞, ∞)

<h3>What are domain and range?</h3>

The domain means all the possible values of the x and the range means all the possible values of the y.

The table is shown below.

Let the logarithm function with the variables x and y. Then we have

y = logₐ x

At x = 25, the value of y will be 2. Then the value of a will be

2 = logₐ 25

2 = 2 logₐ 5

1 = logₐ 5

Then 1 can be written as

1 = log₅ 5

Then on comparing, the value of a will be

a = 5

Then the logarithm function will be

y = log₅ x

Then the domain of the logarithm function is (0, ∞) and the range of the logarithm function will be (-∞, ∞)

More about the domain and range link is given below.

brainly.com/question/12208715

#SPJ1

4 0
3 years ago
Work out the percentage change to 2 decimal places when a price of £8.95 is increased to £10.​
kicyunya [14]

Answer:

12% increase

Step-by-step explanation:

Divide the difference between the two prices by the original price:

1.05/8.95

= 0.12

So, the percent change is 12%

6 0
3 years ago
Clarify please
Scilla [17]
The answer is here
let be L the length of each ramp
so the <span>the length of the entire dog walk, including both ramps is D, such that
</span>D=L + L + d, where d=12ft
L=hypotenus, and sin30° = 4.5ft x L so L= sin30° / 4.5= 1/2x 4.5=2.25ft

D=2.25ft+2.25ft +12ft=16.5ft
3 0
3 years ago
Find the average rate of change of g ( x ) = 5 x 3 + 4 from x = − 1 to x = 3
gladu [14]

Answer:

Go to symbolab.com, online calculator, so good trust me

Step-by-step explanation:

4 0
3 years ago
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