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sergij07 [2.7K]
2 years ago
13

What is the sum of the roots of the polynomial shown below? f(x) = 3r?+ 12x² + 3x - 18

Mathematics
1 answer:
densk [106]2 years ago
6 0

Answer:

24x+3

Step-by-step explanation:

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PLEASE HELP! 11 pts.
solniwko [45]
Hey user!!!

first, we will find the distance between airport and origin then we will double it and we'll get the distance between airport and warehouse.

by Pythagoras theorem :-

let base be = 42 ( as given on abscissa )

and perpendicular be = 56 ( as given on ordinate )

hypotenuse is the distance between the airport and the origin.

therefore h² = 42² + 56²

=> h² = 1764 + 3136

=> h² = 4900

=> h = √4900

=> h = 70

hence, distance between airport and warehouse = 70 × 2 = 140 miles

now, it's given that the factory is 112 miles away from the warehouse in North.

hence, total distance travelled by the truck = 140 + 112

= 252 miles

correct option is 252 miles.

cheers!!!

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3 years ago
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The answer is wrong!
The correct answer is actually b!
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What is 0.01 as a fraction
USPshnik [31]
1 over 10

Explainedddddd-
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will mark brainles if answered fast There are 72 items on Ginny bookshelf 1/3 of items are hardcover books. 4/9 of the items are
Feliz [49]
I think it’s 16 because 1/3=3/9 of hardcover books
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3 0
3 years ago
Julio bought 4 pencils and 3 erasers for $0.37 and David paid $0.33 for 3 pencils and 4 erasers. What is the cost of one pencil?
nirvana33 [79]

Answer:

Each pencil costs $0.07 and each eraser costs $0.03

Step-by-step explanation:

System of linear equations

It refers to the study of systems when n variables are related in m linear equations, each one is not independent from the others. Solving such systems can be done following very diverse approaches.  

Let p=the price of each pencil while e is the price each eraser

Julio bought 4 pencils and 3 erasers, spending

4p+3e=0.37

David bought 3 pencils and 4 erasers, spending

3p+4e=0.33

The system of equations is written in the form

\left\{\begin{matrix}4p+3e=0.37\\ 3p+4e=0.33\end{matrix}\right

We'll solve it by reduction. Multiplying the first equation by -3 and the second by 4:

\left\{\begin{matrix}-12p-9e=-1.11\\ 12p+16e=1.32\end{matrix}\right.

Adding both equations:

7e=0.21  

e=0.03

Multiplying the first one by -4 and the second by 3

\left\{\begin{matrix}-16p-12e=-1.48\\ 9p+12e=0.99\end{matrix}\right.\end{matrix}\right.

Adding both equations:

-7p=-0.49

p=0.07  

Solution: Each pencil costs $0.07 and each eraser costs $0.03

7 0
2 years ago
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