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Nikitich [7]
3 years ago
15

Please help and show clear instructions will give brainliest !

Mathematics
2 answers:
just olya [345]3 years ago
8 0
3 was the right answer to this
Tems11 [23]3 years ago
3 0

Answer:

Answer is 3 because

Step-by-step explanation:

a=2

20*2= 40

40-1 = 39

b = 13

so 39/13 = 3

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Select the correct definition of a least squares regression line. A line fitted to data points that minimizes the sum of the squ
poizon [28]

Answer:

A line fitted to data points that minimizes the sum of the squared residuals

Step-by-step explanation:

The principle of least square(LS) consists of determining the values of the unknown parameters that will minimize the sum of squares of errors (or residuals) where errors are defined as the differences between observed values and the corresponding values predicted or estimated by the fitted model equation.

Thus, the correct definition of least square regression line is "<em>A line fitted to data points that minimizes the sum of the squared residuals</em>"

6 0
3 years ago
which of the following is a true statement a) if AB=CD,then 3CD=3(CD+1). b)if AB=CD,then AB-CD=A-C+B-D. c)if AB=CD,thenAB+EF=CD+
Free_Kalibri [48]

a) if AB = CD, then 3CD = 3(CD + 1) NOT TRUE

example: AB = CD = 1, then 3CD = (3)(1)=3 and 3(CD + 1) = 3(1 + 1) = 3(2) = 6

b) if AB = CD, then AB - CD = A - C + B - D NOT TRUE (it does not make sense because A, B, C and D are points)

c) if AB = CD, then AB + EF = CD + EF TRUE

because

AB = CD    |add EF to both sides

AB + EF = CD + EF

d) if AB = CD, then 2AB = 2A + 2B NOT TRUE (it does not make sense because A and B are points).

8 0
4 years ago
If f(x) = x^2 - 4, find f(x + h)
erastova [34]

f(x+h)=(x+h)^2-4=x^2+2hx+h^2-4

4 0
3 years ago
-1/2 (-5/6 + 1/3)<br><br> Simplify the expression
nata0808 [166]

Answer:

Exact Form:

1/4

Decimal Form:

0.25

Step-by-step explanation:

7 0
3 years ago
What are x- intercepts and y- intercepts
Trava [24]

Answer: x and y intercepts are where the line crosses over the x and y axis.

Step-by-step explanation:

6 0
3 years ago
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