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4 years ago

In the regression equation, what does the letter "a" represent what does the letter "b" represent?

1 answer:

7 0

Let's assume that y = ax + b is your regression equation.

Then a represents the slope of the regression line, and b represents the y-intercept (value of y when x = 0).

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Find the lengths of the missing sides. Write your answers as integers or as decimals rounded to the nearest tenth.

Ksivusya [100]

Answer:

The answer is the last one - X= 9.9 Y= 7

7 0

3 years ago

Suzanne gets 7% commission on all of her sales. If she makes a sale of $350,000, how much commission will she make?

sasho [114]

Answer:

$24,500 of commission

Step-by-step explanation:

350000*0.07 = 24,500

4 0

3 years ago

What substitution should be used to rewrite 4x^4-21x^2+20=0 as a quadratic function?

pogonyaev

Answer:

see explanation

Step-by-step explanation:

Let u = x² ( choice of variable is flexible ), then

4u² - 21u + 20 = 0 ← expressed as a quadratic

This can now be solved for u and converted back into terms of x

3 0

3 years ago

Read 2 more answers

11th grade geometry:

Aliun [14]

Answer:

The perimeter is 72 units and the area is 149 square units.

Step-by-step explanation:

$\triangle SBA$ has coordinates $S(15,-8),B(-2,21)$ and $A(0,0)$

Using the distance formula.........

Length of side $SB = \sqrt{(15+2)^2+(-8-21)^2}= \sqrt{17^2+(-29)^2}= \sqrt{1130}$

Length of side $BA= \sqrt{(-2)^2+(21)^2}= \sqrt{445}$

Length of side $AS =\sqrt{(15)^2+(-8)^2}=\sqrt{289}=17$

So, the perimeter of the triangle will be: $(SB+BA+AS)= \sqrt{1130}+ \sqrt{445}+17 =71.71... \approx 72$ units. (Rounded to the nearest unit)

The height of the triangle for the corresponding base $SB$ is 8.89 units.

Formula for the Area of triangle, $A= \frac{1}{2}(base\times height)$

So, the area of the $\triangle SBA$ will be: $\frac{1}{2}(\sqrt{1130}\times 8.89)= 149.42... \approx 149$ square units. (Rounded to the nearest unit)

3 0

4 years ago

Please can you help me with this problems. Thanks

Slav-nsk [51]

Last question a and b

5 0

3 years ago