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nekit [7.7K]
3 years ago
9

In each of the following expressions, c represents the original cost of an item

Mathematics
1 answer:
Morgarella [4.7K]3 years ago
8 0

Answer:

i . 0.10c

Step-by-step explanation:

Just plug a random number, idk what number you'd choose. But my lucky number is 10 so 0.10 x 10 = 1 which is 10% of the original cost XD

yea..hope this helps! :D

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OlgaM077 [116]
We know that
the equation of the parabola is of the form
y=ax²+bx+c
in this problem
y=1/4x²−x+3
where
a=1/4
b=-1
c=3
 the coordinates of the focus are
(-b/2a,(1-D)/4a)
where D is the discriminant b²-4ac
D=(-1)²-4*(1/4)*3-----> D=1-3---> D=-2
therefore
x coordinate of the focus
-b/2a----> 1/[2*(-1/4)]----> 2

y coordinate of the focus
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the coordinates of the focus are (2,3)
3 0
3 years ago
Read 2 more answers
What is the image of the point (-3, 4) after a rotation of 180° counterclockwise
alukav5142 [94]

Answer:

-3 ,-4

Step-by-step explanation:

5 0
2 years ago
Lexie wants to download books on iTunes. When she inputs her check card number to download the books she selected, she gets a me
liubo4ka [24]

Answer:

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3 years ago
The lengths of sides of a right triangle are 16 meters, 30 meters, and 34 meters. The triangle is dilated by a scale factor of 4
konstantin123 [22]

Answer:

Step-by-step explanation:

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ivanzaharov [21]

Answer:

Infinite pairs of numbers

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Step-by-step explanation:

Let x³ and y³ be any two real numbers. If the sum of their cube roots is zero, then the following must be true:

\sqrt[3]{x^3}+ \sqrt[3]{y^3}=0\\ \sqrt[3]{x^3}=- \sqrt[3]{y^3}\\x=-y

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Examples: 1 and -1; 8 and -8; 27 and -27.

8 0
3 years ago
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