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Ede4ka [16]
3 years ago
9

Add polynomials: (3-4x + 8x^2) + (-6 + 2x - 5x^2)

Mathematics
1 answer:
seropon [69]3 years ago
4 0

Answer:

3x^2-2x-3

Step-by-step explanation:


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Find the equation of a parabola with a focus at (3,1) and a directrix at y = 3.
alekssr [168]

Answer:

c )  y = –1∕4 (x – 3)2 + 2

Step-by-step explanation:

6 0
3 years ago
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Melody used the ratio table at the right to find the number of people served with 15 pounds of ground turkey find her error and
Solnce55 [7]
The first column is the ratio you start with. The next column in the table should be the reduced fraction. To properly reduce a fraction, you divide the same number on the top and bottom of the fraction. Melody instead subtracted 1 in the top and bottom of the fraction to reduce it. She should have divided the top and bottom by 2 to get the second column of 1 pound of turkey and 3 people served.
The final column is designed to be the answer to the initial question of how many people are fed by 15 pounds of ground turkey. Starting with column 2 (the reduced ratio of 1/3), multiply the top by 15 to get 15 pounds of ground turkey. Then do the same to the bottom of the fraction. 3 x 15 = 45 people fed.
So the table should have been
Pounds of turkey    2    1    15
People served        1    3    45
Melody's overriding error was in believing that adding or subtracting numbers to both the top and bottom of a ratio/fraction keep its value the same. Instead, only multiplying or dividing the top and bottom by the same number creates an equivalent fraction.
7 0
4 years ago
1/4x2(4x+8y)-3/5x(25x2-20xy)​
krok68 [10]

Answer:

On the photo it shows all the steps you need. Next time you should make the multiplying symbol to this * instead it'll be easier to understand because if it was a or a multiply symbol

3 0
3 years ago
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NO LINKS What is the surface area? 5 cm 8 cm 7 cm square centimeters​
sveticcg [70]

Answer:

262 feet²

Step-by-step explanation:

2(5×8 + 5×7 + 8×7)

2(40+35+56)

2(131)

262

---

hope it helps

6 0
3 years ago
Simplify following the order of operations
Blababa [14]

Answer:40

Step-by-step explanation:first you do 24 divided by 8 because you have to follow order of operations and you get 3 then next you do 43 minus 3 to get 40 as your answer

7 0
3 years ago
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