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aleksandrvk [35]
3 years ago
9

Determine the regression model for the following data. Be sure to think about which model fits the data before determining your

answer. Type your answer as an equation with any decimals rounded to the nearest hundredth. Do not use unnecessary spaces between numbers or symbols. Use ^ to show exponents if necessary.

Mathematics
1 answer:
Fudgin [204]3 years ago
4 0

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Use the quadratic formula to solve x² + 9x + 10 = 0.<br><br> What are the solutions to the equation?
jok3333 [9.3K]

Answer:

-1.30\ and\ -7.70 (2 decimal places)

Step-by-step explanation:

Quadratic Formula: x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}

-----------------------------------------------

x^2+9x+10=0

Plug in values:

x=\frac{-9\pm \sqrt{9^2-4\cdot \:1\cdot \:10}}{2\cdot \:1}

First value of x:

x=\frac{-9+\sqrt{41}}{2}=-1.30 (2 decimal places)

Second value of x:

x=\frac{-9-\sqrt{41}}{2}=-7.70 (2 decimal places)

6 0
3 years ago
Select all the expressions that are equivalent to the polynomial below.
katrin2010 [14]
The answers are: D and C and A and E
because: 


B 3(x - 5) - 2(6x2 + 9x + 5)=<span><span><span>−<span>12<span>x^2</span></span></span>−<span>15x</span></span>−<span>25

</span></span>F (4x2 - 13x - 7) - (16x2 + 9x - 5)=<span><span>−<span>12<span>x2</span></span></span>−<span>22x</span></span>−<span>2

E </span>(-15x2 + 9x - 10) + (3x2 - 10x - 5)=<span><span>−<span>12<span>x^2</span></span></span>−x</span>−<span>15</span>
4 0
3 years ago
Read 2 more answers
Need help with 7 and 9 pls help
Genrish500 [490]

Answer:

<em>The remaining amount on the lunch card is $96 dollars.</em>

Hope this helps!

4 0
3 years ago
2(100x+26) using distributive property and the rectangle​
EastWind [94]

Answer: 200x+52

Step-by-step explanation:2*100x= 200x

2*26=52

So...........200x+52

4 0
3 years ago
The total number of students in the seventh grade is 9 more than 4 times as many students as are in the art class. If there are
mariarad [96]

Answer:

I think there are 23 students in the art class.

Step-by-step explanation:

You first subtract 9 from 101. Then, you divide by four to get 23.

4 0
3 years ago
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