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3 years ago

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for y=x^2-10 do the following . A) Sketch a graph of the equation. B) Identify the vertex. C)Compare the graph of y=f(x) to the

graph of y=x^2 (state any transformations used)

1 answer:

Andreas93 [3]3 years ago

8 0

A ) A graph of the equation is in the attachment.
B ) The vertex ( 0, -10 )
C ) The graph of y = x² is translated for 10 units down.

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Question 3 (20points)<br> Solve the quadratic equation using the quadratic<br> -x2+8x=7

Angelina_Jolie [31]

Answer:

x = 7 or x = 1

Step-by-step explanation:

For this equation: a=-1, b=8, c=-7

−1x2+8x+−7=0

Step 1: Use quadratic formula with a=-1, b=8, c=-7.

x= ( −b±√b2−4ac )/2a

x= (−(8)±√(8)2−4(−1)(−7))/ (2(−1) )

x= (−8±√36 )/-2

x=1 or x=7

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3 years ago

The cost to purchase a song from iTunes is $0.99 per song. To purchase a song from napster membership fee is $10. In addition, e

jonny [76]

Answer:

Step-by-step explanation:

Itunes : 0.99 per song......let d represent the number of songs

so the expression for this is : 0.99d

Napster : 10 bucks + 0.89 per song

this expression would be : 10 + 0.89d

so if u want to find out when they will be the same, set them equal to each other and solve for d

0.99d = 10 + 0.89d

0.99d - 0.89d = 10

0.10d = 10

d = 10 / 0.10

d = 100.......so 100 songs must be purchased <===

check it...

itunes : napster :

0.99(100) = $ 99 10 + 0.89(100) = 10 + 89 = $ 99

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3 years ago

Domingo earns $13 dollars per hour and worked 47.5 hours that week. He is paid

stellarik [79]

Domingo earns 715$ in the week that is his gross income

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2 years ago

Quinton bought x number of shares for p dollars and paid a 0.5% commission. He sold the stock for y dollars and paid a flat fee

Ksju [112]

Answer:

$y-(0.05xp+7)$

Step-by-step explanation:-

As per the statement:

Quinton bought x number of shares for p dollars and paid a 0.5% commission

⇒ $0.05xp$

It is also given that: He sold the stock for y dollars and paid a flat fee of $7.

⇒ $y-7$

then;

Net proceeds is given as:

$y-7-0.05xp = y-(0.05xp+7)$

Therefore, Quinton's net proceeds algebraically is $y-(0.05xp+7)$

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3 years ago

Solve the system, or show that it has no solution. (If there is no solution, enter NO SOLUTION. If there are an infinite number

liberstina [14]

Answer:

The system has an infinite set of solutions $(x,y) = (x, \frac{x-5}{4})$

Step-by-step explanation:

From the first equation:

$20x - 80y = 100$

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$x = \frac{100 + 80y}{20}$

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Replacing on the second equation:

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$-14(5 + 4y) + 56y = -70$

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This means that the system has an infinite number of solutions, considering:

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The system has an infinite set of solutions $(x,y) = (x, \frac{x-5}{4})$

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3 years ago