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Alexxx [7]
3 years ago
14

Adding and subtracting polynomials(-3x² - 9x + 5) - ( -2x²- 4x + 7)​

Mathematics
1 answer:
seraphim [82]3 years ago
6 0

Answer:

(-3x²- 9x+5) - (-2x²-4x +7)

= (-3x²- 9x²+5) (2x²+4x +7)

=-3x²-9x+5+2x²+4x-7

=-3x²+2x²-9x+4x+5-7

=-x²-5x-2

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olganol [36]
The answer is 58 pretty sure
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3 years ago
How many 12 inch sections can you get out of 9 foot calculator?
Citrus2011 [14]
To solve this problem, the first thing you should keep in mind is the following conversion:
 1 foot = 12 inches.
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8 0
3 years ago
The data show the chest size and weight of several bears. Find the regression​ equation, letting chest size be the independent​
Ipatiy [6.2K]

Answer:

y = 16.3216X - 330.3904

322 pounds;

Result is significant

Step-by-step explanation:

Given the data:

Chest size, x : 41,54,44,55,39,51

Weight, Y : 328,528,418,580,296,503

Using technology, the prediction model obtained by fitting the data is :

y = 16.3216X - 330.3904

Where, x = chest size ; y = weight

The best predicted weight of a bear with chest size of 40 is

Put x = 40 in the equation :

y = 16.3216(40) - 330.3904

Y = 322.4736

Y = 322 pounds

At α = 0.05

The regression Coefficient, R value obtained is 0.986 ; using this to obtain the Pvalue ;

df = n - 1

Pvalue(0.986, 5) = 0.00198

Since, Pvalue < α ; result is significant at α = 0.05

8 0
3 years ago
Multiply two negative numbers to get 18​
egoroff_w [7]

Answer:

Hey mate......

Step-by-step explanation:

This is ur answer......

<h2>(-9) × (-2) = 18</h2>

Hope it helps!

mark me brainliest pls.....

Follow me! :)

8 0
2 years ago
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Carlos biked 139/8 on Saturday and 135/7 on Sunday. Which day did he ride further and by how much?​
Ratling [72]

Answer:

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Step-by-step explanation:

139/8=17.38

135/7=19.29

6 0
3 years ago
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