What multiplier do we use to increase by 72%

Mathematics

1 answer:

Deffense [45]3 years ago

5 0

Answer:

1.72

Step By Step:

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I need the answer.Help me out

rosijanka [135]

The answer is $\boxed{7},$ where $a=5$ and $b=2.$

<em>Solution sketch:</em>

Apply the Pythagorean theorem to find $EC$ and $AE,$ which you then use to find $AD$ and $BC.$ Apply Heron's formula to $\triangle ABC$ to find that its area is 10, and then use $[ABC]=\frac{(AB)(CF)}{2}$ (base times height over 2) to finish by solving for $CF.$ .

6 0

4 years ago

The correlation coefficient between two quantitative variables is approximately 0.6. What does the value of this correlation coe

murzikaleks [220]

Answer:

The model does not fits the data well.

Step-by-step explanation:

Correlation:

Correlation is a technique that help us to find or define a relationship between two variables.

It is a measure of linear relationship between two quantities.

A positive correlation means that an increase in one quantity leads to an increase in another quantity
A negative correlation means with increase in one quantity the other quantity decreases.

R-square, $R^2$

The quantity R-squared is an indicator of the predictive power of a model.
It explains the variation in the dependent variable due to independent variable.
It shows how well the model fits the data.
R-squared is also known as the coefficient of determination.

$R^2 = \text{(Correlation coefficient)}^2= (0.6)^2 = 0.36 = 36\%$

Therefore, only 36% of the variations in the dependent variable is explained by the independent variable in the model which means more than 50% of variation cannot still be explained in the dependent variable.

Hence, the model does not fits the data well.

8 0

4 years ago

Determine if these matrices are inverses by calculating AB:

Phoenix [80]

Answer:

C11= 1

C12=0

C21=0

C22=1

Step-by-step explanation:

Just took the the assignment