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Sonbull [250]
3 years ago
12

Is the contrapositive of the following conditional true? If v≥4, then v≤4. yes or no

Mathematics
1 answer:
arlik [135]3 years ago
6 0
Sent the solution with explanation.

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3 years ago
Your medical research team is investigating the standard deviation of the cost of a 30-day-supply of a certain heart medication.
Valentin [98]

Considering the situation described, the hypothesis tested are given as follows:

  • The null hypothesis is H_0: \sigma \geq 23
  • The alternative hypothesis is H_1: \sigma < 23

<h3>What are the hypothesis tested?</h3>

At the null hypothesis, it is tested if the standard deviation is not less than $23, that is:

H_0: \sigma \geq 23

At the alternative hypothesis, it is tested if there is significant evidence t conclude that the standard deviation is less than $23, that is:

H_1: \sigma < 23

More can be learned about an hypothesis test at brainly.com/question/26454209

4 0
2 years ago
Need a quick answer please for math asap!
morpeh [17]

Because the discriminant is less than zero, there are no real solutions in the equation.

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4 years ago
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Solve the system of equations. y=3x-1 and y=-2x+9. PLEASE SHOW WORK
kow [346]

Since both equations equal Y, set them equal to each other and solve.


3x -1 = -2x +9

Add 2x to each side:

5x - 1 = 9

Add 1 to each side:

5x = 10

Divide both sides by 5:

x = 10/5

x = 2


Now replace x with 2 and solve for y:

y = 3(2) -1 = 6-1 = 5


x = 2, y = 5  (2,5)

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3 years ago
Find the length of the third side. If necessary, write in simplest radical form
mrs_skeptik [129]

Answer:the answer is 4 to the square root of 2

Step-by-step explanation:

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