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2 years ago

7

Which linear equation represents the data given in the table?

1 answer:

bekas [8.4K]2 years ago

6 0

The answer is C y=6x-6

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For which positive integer values of $k$ does $kx^2+20x+k=0$ have rational solutions? Express your answers separated by commas a

Musya8 [376]

Answer:

-10,10

Step-by-step explanation:

The given quadratic equation is

$k {x}^{2} + 20x + k = 0$

The discriminant of this equation is given by;

$D = {b}^{2} - 4ac$

where a=k, b=20, c=k

For rational solutions, the discriminant must be zero.

${20}^{2} - 4 \times k \times k = 0$

Simplify to get:

$400 - 4 {k}^{2} = 0$

This implies that:

$400 = 4 {k}^{2}$

$100 = {k}^{2}$

Take square root to get:

$k = \pm\sqrt{100}$

$k = \pm10$

$k = - 10 \: or \: k = 10$

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2 years ago

What is the best next step in the construction of the perpendicular bisector <br> AB?

qaws [65]

“A” is the answer i believe !

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3 years ago

The orange spinner is spun and then the aqua spinner is spun. What is the probability that the numbers will add to 4 or less?

scZoUnD [109]

Answer:

25%

Step-by-step explanation:

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3 years ago

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2 years ago

You are looking at your power bill for the month, you pay 12 cents per kilowatt-hour. Your power bill came out to $74.80 how man

vesna_86 [32]

Answer:

623.33 KWH

Divide 74.80 by .12

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2 years ago