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Nataliya [291]
2 years ago
11

Need the answers and dont know it

Mathematics
1 answer:
Leno4ka [110]2 years ago
4 0

Answer:

Hello,

Step-by-step explanation:

The parabole has (1,-4) as vertex and is passing trought (0,-1)

y=k*(x-1)²+4 and -1=k*(-1)²+4 ==> h=-5

y=-5(x-1)²+4=-5(x²-2x+1)+4 =<u> -5x²+10x-1</u>

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Which expression can be simplified to find the slope of the trend line in the scatterplot?
Maslowich

Answer:

1. \frac{24-79}{12-2}

Step-by-step explanation:

We have been given a graph of a scatter-plot and we are asked to find the correct expression than can be solved to find the slope of the trend line in the scatter-plot.

Since we know that slope of a line can be found by dividing the difference of the y-coordinates of 2 points on a line by difference of the x-coordinates of these same points.  

\text{Slope}=\frac{y_2-y_1}{x_2-x_1}  

We can see that (2,79) and (12,24) are two given points of our trend line. So let us substitute x and y-coordinates of our given points in slope formula to find the our desired expression.    

x_1=2

x_2=12

y_1=79

y_2=24

\text{Slope}=\frac{24-79}{12-2}

Therefore, the expression \text{Slope}=\frac{24-79}{12-2} can be solved to find the slope of the trend line in the scatter-plot and 1st option is the correct choice.

7 0
3 years ago
Read 2 more answers
AB has endpoints at A(4,−8) and B(−6,−2).
lesantik [10]
(-2,-5) is the answer for this by doing -6-4 and -8–2
6 0
4 years ago
3(2x-5)= 21<br> solve it 2 different ways <br> plzz hurry i need help
docker41 [41]

Answer:

x = 6

Step-by-step explanation:

3 (2x - 5) = 21

=> 6x - 15 = 21

=> 6x = 21 + 15

=> 6x = 36

=> x = 36 / 6

=> x = 6

OR

3 (2x - 5) = 21

=> 2x - 5 = 21 / 3

=> 2x - 5 = 7

=> 2x = 7 + 5

=> 2x = 12

=> x = 12 / 2

=> x = 6

Hope it helps :)

Please mark my answer as the brainliest

4 0
3 years ago
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Holding a participant variable constant has the double advantage of (1) preventing the variable from becoming a confounding vari
Elodia [21]

Answer:

The provided statement is True.

Step-by-step explanation:

Holding a variable constant implies that there are no kind of relationship between the variables and the treatments.

Holding a participant variable constant has the double advantage:

(1) preventing the variable from becoming a confounding variable

(2) reducing variance within groups.

A confounding variable effects both the dependent and the independent variable remarking a relationship between the two.

Variation within group implies the difference caused by the individual values of each group.

Thus, the provided statement is True.

5 0
3 years ago
If ABC is congruent to DEC, angle B = 50 degrees and angle E = 5x x=
Anarel [89]
Because base angles are congruent, both angle A and B are congruent. If the two triangles are congruent, then the base angles are the same, meaning 5x=50*. Divide by 10 and you get the answer of x=5. :) Hope this helps!
7 0
3 years ago
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