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melisa1 [442]
4 years ago
6

.................................

Mathematics
1 answer:
horsena [70]4 years ago
5 0
We know:
a^{-n}=\dfrac{1}{a^n}
therefore
2a^{-4}m^5=2\cdot\dfrac{1}{a^4}\cdot m^5=\dfrac{2m^5}{a^4}
Answer: B 2m^5/a^4

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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
Write an equation in<br> Slope - int form with the<br> given information<br> m=2, (3, 4)
Brut [27]

Answer:

y=2x-2

Step-by-step explanation:

apply point

4=2(3)+n

4=6+n

n=-2

y=2x-2

4 0
3 years ago
100 points and brainliest
ololo11 [35]

Answer:

you only gave 50 points but thanks haha

Step-by-step explanation:

3 0
3 years ago
Please help me !! ! !
Vesna [10]
Option a. option a has an answer of x=13, while the other problems have solutions of x=5.
3 0
3 years ago
A triangle has an area of 80 yd^2 and a height of 10 yd. How long is the base of a triangle? Enter in the answer in the box.​
sdas [7]

Answer:

Length of the base is 16 yards.

Step-by-step explanation:

We are given that,

Area of the triangle = 80 yd²

Height of the triangle = 10 yards

Since, we know,

Area of a triangle = \frac{1}{2}\times Base \times Height

So, we get,

80=\frac{1}{2}\times Base \times 10

i.e. 80=Base \times 5

i.e. Base=\frac{80}{5}

i.e. Base = 16 yards

Thus, the length of the base is 16 yards.

8 0
4 years ago
Read 2 more answers
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