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3 years ago

HELP!! WILL GIVE BRAINLIEST AND 20 POINTS!!

Mathematics

2 answers:

Sauron [17]3 years ago

3 0

The answer selected in the Picture is correct

OlgaM077 [116]3 years ago

3 0

The angle m<1 is equal to 75 degrees, we can find this because a straight line is always 180 degrees, and it's opposite is 105 degrees. We can simply subtract 105 from 180 and get 75 degrees. (The other selected choice is also correct, since the lines are parallel.)

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Rewrite as an exponential equation ln7=x

zvonat [6]

Answer:

As an exponential equation, it is $e^{x} = 7$

Step-by-step explanation:

Logarithm of base e:

$\ln{a} = b$ means that $e^b = a$

In this question:

We are given:

$\ln{7} = x$

Which means that the exponential equivalent is given by:

$e^{x} = 7$

6 0

3 years ago

Canada has a population that is about 1/10 as large as the United States. If Canada's population is about 32,000,000, about how

Nezavi [6.7K]

Canada's populations times 10 and you will get the answer.

8 0

4 years ago

What is the mean absolute deviation for the data set? {20, 24, 12, 44, 68}

Yuliya22 [10]

The mean of a set of numbers is the sum divided by the number of terms.So, 20+24+12+44+68 / 5

mean = 33.6

6 0

3 years ago

Read 2 more answers

If the correlation between height and weight of a large group of people is 0.74, find the coefficient of determination (as a per

Vika [28.1K]

Answer:

B. The coefficient of determination is 54.76%. Therefore, 54.76% of the variation in weight can be explained by the regression line.

Step-by-step explanation:

The correlation coefficient is a "statistical measure that calculates the strength of the relationship between the relative movements of two variables". It's denoted by r and its always between -1 and 1.

The coefficient of determination is a measure to quantify how a model explains an dependent variable.

The formula for the correlation coeffcient is given by:

$r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}$

The formula for the coefficient of determination is $r^2$

In our case the correlation coefficient obtained was 0.74

And the determination coefficient is $R=0.74^2 =0.5476$ , and if we convert this into % we got 54.76%

Assume that height is the predictor (X) and weight is the response (Y)

And the best answer for this case is:

B. The coefficient of determination is 54.76%. Therefore, 54.76% of the variation in weight can be explained by the regression line.

4 0

3 years ago

Which expressions are equivalent to this expression?

lara [203]

Answer:

Answer is given below with explanations. 

Step-by-step explanation:

$given \: equation \: is \\ 30 {x}^{2} - 5x - 10 \\ taking \: out \: 5 \: which \: is \: common \: gives \\ 5(6 {x}^{2} - x - 2) \\ by \: factorization \: \\ (multiply \: = - 12 \: and \: add \: - 1) \\ 5(6 {x}^{2} + 3x - 4x - 2) \\ 5(3x(2x + 1) - 2(2x + 1)) \\ = 5(2x + 1)(3x - 2) \\ so \: answer \: is \: option \: 5$

HAVE A NICE DAY!

THANKS FOR GIVING ME THE OPPORTUNITY TO ANSWER YOUR QUESTION. 

7 0

3 years ago