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nika2105 [10]
3 years ago
10

The function y = 2x2 + 4x - 6 is graphed.

Mathematics
1 answer:
lys-0071 [83]3 years ago
7 0

Answer:

2 for the first drop down

-3 and 1 for the second

Step-by-step explanation:

no u

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Can you help me with these too?<br> its for a geometry final practice<br> plisss
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Answer:

I think A and C

Step-by-step explanation:

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Solve for x.<br><br> 6 x - 2 / 4 = x - 2<br><br> x =
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On a coordinate plane, a circle has a center at (negative 2, 1). Which is the general form of the equation of the circle shown?
Setler79 [48]

Answer:

Options A and B are correct.

Step-by-step explanation:

To get the correct answer we will convert each equation in the center radius form.

A). x² + y² + 4x - 2y - 4 = 0

x² + y² + 4x - 2y = 4

x² + 4x + 4 - 4 + y² - 2y + 1 - 1 = 4

(x + 2)²+ (y - 1)² - 5 = 4

(x + 2)²+ (y - 1)²= 9

Therefore, center of the circle is (-2, 1).

B). x² + y² + 4x - 2y + 2 = 0

x² + y² + 4x - 2y = -2

x² + 4x + 4 - 4 + y² - 2y + 1 - 1 = -2

(x + 2)² + (y - 1)² -5 = -2

(x + 2)² + (y - 1)²= -2+ 5

(x + 2)² + (y - 1)² = 3

Center of this circle is (-2, 1)

C). x² + y² - 4x + 2y - 4 = 0

(x² - 4x + 4 - 4) + (y² + 2y + 1 - 1) = 4

[(x - 2)² - 4]+ [(y + 1)²- 1] = 4

(x -2)² + (y + 1)² = 9

Center of this circle is (2, -1).

D). x² + y² - 4x + 2y + 2 = 0

x² - 4x + 4 - 4 + y² + 2y + 1 - 1 = -2

(x - 2)² - 4 + (y + 1)² - 1 = -2

(x -2)² + (y + 1)² - 5 = -2

(x -2)² + (y + 1)² = 3

Center of this circle is (2, -1)

Options A and B are correct.

5 0
3 years ago
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A sporting goods store is having a 15% off sale on all items. Which functions can be used to find the sale price of an item that
oksano4ka [1.4K]

According to the question, the store is giving 15% off sales on all items. That means there will be a reduction of 15% in sale price of each item.

Let x represent the original price of an item.

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The sale price of an item in the store will now reduce by 0.15x. This means that;

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But x is the original price, therefore we can substitutex, wherever we see original. This gives us;

Sale\: Price=x-0.15x

Since sale price is expressed in terms of x, we can also write it as a function of x. That is,

f(x)=x-0.15x

Therefore the correct answers are

f(x)=x-0.15x

and

Sale\: Price=Original-0.15(Original)



4 0
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