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2 years ago

Como determinar el valor de un segmento

Mathematics

1 answer:

Ksenya-84 [330]2 years ago

4 0

Sorry I don’t speak Spanish

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After 3 points have been added to every score in a sample, the mean is found to be M 5 83 and the standard deviation is s 5 8. W

Maurinko [17]

Answer:

Hence the value for the mean is 80 and the standard deviation for the original sample is 8.

Step-by-step explanation:

Mean = 83-3 = 80.

Here the standard deviation didn't change = 8.

5 0

2 years ago

A case of 8 items costs $9.44 at Costco. What is the price of each item?

Anarel [89]

Answer: $1.18 per item

Step-by-step explanation:

9.44/8=$1.18 per item

5 0

1 year ago

In simplest radical form, what are the solutions to the quadratic equation 6 = x2 – 10x?

vichka [17]

Answer:

$x = 5+\sqrt{31}\,\, and\,\, x=5-\sqrt{31}$

Step-by-step explanation:

We need to solve the quadratic equation

6 = x^2 -10x

Rearranging we get,

x^2-10x-6=0

Using quadratic formula to solve the quadratic equation

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

a= 1, b =-10 and c=6

Putting values in the quadratic formula

$x=\frac{-(-10)\pm\sqrt{(-10)^2-4(1)(-6)}}{2(1)}\\x=\frac{10\pm\sqrt{100+24}}{2}\\x=\frac{10\pm\sqrt{124}}{2}\\x=\frac{10\pm\sqrt{2*2*31}}{2}\\x=\frac{10\pm\sqrt{2^2*31}}{2}\\x=\frac{10\pm2\sqrt{31}}{2}\\x = 5\pm\sqrt{31}$

So, $x=5+\sqrt{31}\,\, and\,\, x=5-\sqrt{31}$

3 0

3 years ago

Read 2 more answers

Witch of the following shows 18\12 as a mixed number and 1 7/8

alexgriva [62]

The correct answer in its final stage is (C). The third choice.

6 0

3 years ago

Somebody please help me with this ASAP I need the answers to the whole thing!! Please

cricket20 [7]

Answer:

(-2, 3 )

(-1, 2 $\frac{1}{2}$ )

(0, 2)

(1, 1 $\frac{1}{2}$ )

(2, 1)

Step-by-step explanation:

You just simply substitue the values given into the equation, and the answer worked out will be the value of y.

a = - $\frac{1}{2}$ × -2 + 2 = 1 + 2 = 3

b = - $\frac{1}{2}$ × -1 + 2 = $\frac{1}{2}$ + 2 = 2 $\frac{1}{2}$

c = - $\frac{1}{2}$ × 0 + 2 = 0 + 2 = 2

d = - $\frac{1}{2}$ × 1+ 2 = - $\frac{1}{2}$ + 2 = 1 $\frac{1}{2}$

e = - $\frac{1}{2}$ × 2+ 2 = -1 +2 = 1

Hope this helps you :)

6 0

3 years ago