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erastova [34]
3 years ago
7

Solve by completing a square x(2)-8×+15=0

Mathematics
2 answers:
tatuchka [14]3 years ago
5 0

Answer:

x=2.5

Step-by-step explanation:

x(2)-8×+15=0 combine like terms

-6x+15=0 subtract 15 from both sides

-6×=-15 divide by -6 on both sides

x=2.5

lawyer [7]3 years ago
4 0

Answer:

2x -8x+15=0

-6x+15=0

-6x= 15

x= 5/2

Step-by-step explanation:

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Teacher's salaries in Georgia are normally distributed with an average salary of $52,000 with a standard deviation of $12,000. W
suter [353]

Answer:

81.85%

Step-by-step explanation:

We have the following information:

mean = m = 52000

standard deviation = sd = 12000

a = 40000

b = 76000

we need to find the probability between a and b, that is:

P (a <x <b) = P (40,000 <x <76000)

P [(40000 - m) / sd <(x - m) / sd <(76000 - m) / sd]

replacing

P [(40000 - 52000) / 12000 <z <(76000 - 52000) / 12000]

P (-1 <z <2)

P (z <= -1) - P (z <= 2)

We look for this value of z, in the attached table:

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In other words, the probability is 81.85%

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3 years ago
Will ran four miles on his first day of training.The next day he ran one-third that distanceHow far did he run the second day?
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<span>Will ran 1.33333333333 miles on his second day of training.</span>
3 0
3 years ago
Which angles are alternate exterior angles ? Anyone knows this !! I want to give you best brainliest
Nataliya [291]

Answer:

GHF and LKM?

Step-by-step explanation:

Alternate interior angles are formed when a transversal passes through two lines. The angles that are formed on opposite sides of the transversal and inside the two lines are alternate interior angles. The theorem says that when the lines are parallel, that the alternate interior angles are equal

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Math question :) please help
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I know i may be unwanted here but I just want you to know that you are incredible and that I love you for you! You are special to everyone you meet, and should not change who you are. I know your life may be tough, but you are strong and can get through it!

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3 years ago
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