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3 years ago

Main Idea: To evaluate an exponential growth or decay function, substitute a value for the exponent variable and simplify.

Mathematics

1 answer:

Helen [10]3 years ago

3 0

If there is more to the answer than what I give please ask for more!

With $F(x) = 3^{x}$ we can find $F(4)$ by substituting 4 into the main function.

So it would look like this: $F(4) = 3^{4} = 3*3*3*3 = 81$

Hope this helps!

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A 2-column table with 6 rows. The first column is labeled miles driven with entries 27, 65, 83, 109, 142, 175. The second column

Helen [10]

Answer:

1) The linear regression model is y = -0.0348·x + 13.989

2) The correlation coefficient is -0.0725

3) The strength of the model is strong - association

Step-by-step explanation:

X Y XY X²

27 13 351 729

65 12 780 4225

83 11 913 6889

109 10 1090 11881

142 9 1278 20164

175 8 1400 30625

∑ 601 63 5812 74513

From y = ax + b, we have

$a = \frac{n\sum xy - \sum x\sum y }{n\sum x^{2}-\left (\sum x \right )^{2}} = \frac{6 \times 5812 - 601 \times 63}{6 \times 74513-601^{2}} = - 0.0348$

b = 1/n(∑y -a∑x) = 1/6(63 - (0.0348)×601) = 13.989

Therefore, the linear regression model is y = -0.0348·x + 13.989

$r = \frac{n\sum xy - \sum x\sum y }{\sqrt{[n\sum x^{2}-\left (\sum x \right )^{2}] [n\sum y^{2}-\left (\sum y \right )^{2}]}} = \frac{6 \times 5812 - 601 \times 63}{\sqrt{[6 \times 74513-601^{2}] [6 \times 3969 - 63^2]} } = - 0.0725$

3) The strength is - association.

5 0

4 years ago

Read 2 more answers

How to find answer to7.86*4.6

shusha [124]

7.86*4.6=36.156

Hope this helps

3 0

3 years ago

If 25 articles cost $43.75 how much does each cost?

quester [9]

Answer:

$1.75

Step-by-step explanation:

I had this question and got it right!

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3 years ago

Help pleasssss Order the following numbers from least to greatest.<br> 0.58 0.28 1/2

Tema [17]

Answer. 0.28, 1/2, 0.58
Explanation. If you convert all the numbers to decimal form, we find that this is their position from least to greatest. Hope this helps, let me know if it is correct so others can use it as well :)
Good luck.

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3 years ago

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H+4<6<br> How do I solve the inequality?

tensa zangetsu [6.8K]

H + 4 < 6
h < 6 - 4
h<2
Therefore the answer is h< 2

7 0

3 years ago