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4 years ago

What is the mean of the normal distribution shown below? A normal distribution is shown. The curve peaks at 0. –1 0 1 2

Mathematics

2 answers:

oee [108]4 years ago

7 0

Answer:Plz mark Brainliest

The answer is 0.

Step-by-step explanation:

I just took the quiz on E D G E N U I T Y 2020

Aleks04 [339]4 years ago

3 0

Answer:

Step-by-step explanation:

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How many solutions does the equation x^2=100 have?

Nataliya [291]

2 and these are x = -10 and x = 10

$x^2 = 100 \\ \sqrt{x^2} = \sqrt{100} \\ x = ±10$

6 0

3 years ago

How many days are in 11 miles

lyudmila [28]

Erm i could you explain more of the question we can't go by just this

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3 years ago

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The ratio of boys to girls in Ms. Gonzalez's class is 3 to 4. There are 12 girls in the class. What is the total number of stude

raketka [301]

Answer:

there are 21 students in her class.

Step-by-step explanation:

Since the 12 girls corresponds to the 4 in the ratio, I multiplied the 3 by three to get the amount of boys. then add the boys to the girls to get 21 students.

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3 years ago

The alphabet of a fictionary tribe consists of three letters: A, O and M. Any combination of no more than four of these letters

andrezito [222]

Answer:

120 words

Step-by-step explanation:

There are only three possible letters, assuming words can be 1, 2, 3 or 4 letters long:

The number of 1 letter words is 3

The number of 2 letter words is 3² = 9

The number of 3 letter words is 3³ = 27

The number of 4 letter words is 3⁴ = 81

The total number of possible words is:

$3+9+27+81 = 120\ words$

This tribe's language has 120 words.

8 0

3 years ago

What are the solutions to the equation 2x^2 + 9x =5

Maksim231197 [3]

Answer:

$\displaystyle -5 \ and \ \frac{1}{2}$

Step-by-step explanation:

$2x^2 + 9x =5$

we have to move 5 in the other side with a different sign, to get a 2 grade ecuation

$2x^2 + 9x -5= 0$

now we know

a=2

b=9

c=-5

we have to find delta

$\boxed{\Delta=b^2-4ac} \\\\ \Delta=9^2-4\cdot2\cdot(-5)\\ \Delta=81+40 \\ \Delta=121$

and now we have to use the formula to find the root square

$\displaystyle \boxed{ X_{1,2}=\frac{-b\pm\sqrt{\Delta} }{2a} }$

$\displaystyle X_1=\frac{-b-\sqrt{\Delta} }{2a} =\frac{-9-11}{2\cdot2}=\frac{-20}{4} =-5$

$\displaystyle X_2=\frac{-b+\sqrt{\Delta} }{2a} =\frac{-9+\sqrt{121} }{2\cdot4} =\frac{-9+11}{4} =\frac{2}{4} =\frac{1}{2}$

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3 years ago

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