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Archy [21]
3 years ago
13

If the equation y² - (K-2y + 2k +1 = 0with equal roots find the value of k​

Mathematics
1 answer:
777dan777 [17]3 years ago
8 0

Answer:

y² - (K-  2)y + 2k +1 = 0

equal roots means D=0

D= b^2 - 4ac

a=1, b= (k-2), c= 2k+1

so,

(k-2)^2 - 4(1)(2k+1) = 0

=> k^2 +4 - 8k -4 = 0

=> k^2 -8k = 0

=> k^2 = 8k

=> k= 8k/k

=> k = 8

Therefore the answer is k= 8

Hope it helps........

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A recent national survey found that high school students watched an average (mean) of 7.1 movies per month with a population sta
muminat

Answer:

H0: μc ≤ μs    Ha :μc > μs    

Step-by-step explanation:

The null and alternate hypotheses can be stated as

H0: μc ≤ μs    Ha :μc > μs    one tailed test

Where

μc =  Mean of college students watching movies in a month

μs  =  Mean of school students watching movies in a month

For one tailed test of α =0.05   the value of Z= ± 1.645

The critical region will be Z >  ± 1.645

It is of importance to note that by rejecting the null hypothesis and accepting the alternate hypothesis we are automatically rejecting all values of mean that are greater than 7.1

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3 years ago
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3 years ago
Which shows another way to write 64?
Taya2010 [7]

None of those show another way to 64

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4*4*4*4*4*4=4096

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Another way to show 64 is 8*8 or 4^3

4 0
3 years ago
Is x2 - 2 a factor of x4 - 2x3 + 3x2 - 4x + 5 ?
SashulF [63]
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6 0
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Step-by-step explanation:

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With the given information, select the point (0, -4) on the graph, this is where the line crosses the y axis, as shown through the -4 in the equation.

Next, look at the slope and youll see 2/3x. Slope is in format "rise over run" meaning the first number (2) is the vertical change, so up two, and the second number (3) is horizontal change, right 3.

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3 years ago
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