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rewona [7]
3 years ago
11

Find the value of k for x^2 - 2kx+7k -12=0 so that they have two equal roots

Mathematics
1 answer:
Alisiya [41]3 years ago
5 0

Step-by-step explanation:

x^2 -2kx +7k -12 = 0

two equal roots -->Δ = b^2 -4ac = 4k^2 - 4(7k-12)=0 = 4(k^2 - 7k +12)=4(k-4)(k-3)=0

so k =3 and k =4

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A disc has a diameter of centimeters while a mini disc has a diameter of centimeters. Write the ratio of the mini disc diameter
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Answer:

2 : 3

Step-by-step explanation:

A disc has a diameter of 21 cm while a mini disc has a diameter of 14cm. Write the ratio of the mini disc diameter to the disc diameter.

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Ratio of the mini disc diameter to the disc diameter = Diameter of mini disc / diameter of disc

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3 years ago
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anzhelika [568]

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3 years ago
Read 2 more answers
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saw5 [17]
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5 0
3 years ago
2 1/3 −1.5x=12.3 please help me I'm really struggling need an answer ASAP.
Harrizon [31]

Answer:

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Step-by-step explanation:

since you need to find the value of x , but all values to one side and have x on the other .. meaning :

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3 years ago
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Answer:

FV= $3,725.07

Step-by-step explanation:

Giving the following information:

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3 0
3 years ago
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