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Softa [21]
3 years ago
13

What is the standard deviation of the following data? If necessary, round your answer to two decimal places. 9, 10, 10, 8, 7, 11

, 12, 9
Mathematics
1 answer:
Ierofanga [76]3 years ago
8 0
The standard deviation is approximately 9.5
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What value of x make the equation 24-(3x - 9)-6= -2(4x - 10+ 5x + 7 true?
maksim [4K]

Answer:

x = 0

Step-by-step explanation:

24 - (3x - 9) - 6 = -2(4x - 10) + 5x + 7

solve the brackets by using the distribute property:

1(3x - 9) = 3x - 9

-2(2x - 10) = -8x + 20

rewrite the equation:

24 - 3x - 9 - 6 = -8x + 20 + 5x + 7

combine like therms:

27 - 3x = -3x + 27

subtract 27 from both sides:

27 - 3x - 27 = -3x + 27 - 27

- 3x = -3x

add x to both sides of the equation:

-3x + 3x = -3x + 3x

x = x or 0 = 0

to check, substitute 0 for x

24 - (3(0) - 9) - 6 = -2(4(0) - 10) + 5(0) + 7

anything times 0 is 0

24 - (0 - 9) - 6 = -2(0 - 10) + 0 + 7

solve:

24 + 9 - 6 = 0 + 20 + 0 + 7

27 = 27

7 0
3 years ago
A sewing machine is at a 20% off sale. The original price was $340. How much does the sewing machine cost at a 20% off sale?
Anvisha [2.4K]

Answer:

272$

Step-by-step explanation:

Since it is at a sale of 20% off that means that we will have to subtract 100% from 20% which is 80%

Now to find the exact value, we will have to multiply 80%, or 0.80 with 340

0.80*340= 272$

Therefore our answer is 272$

                     - Hope this helped :)

-Brainliest is most appreciated :)

4 0
3 years ago
Read 2 more answers
Pls help this is due soon!!!
Setler79 [48]
19 for the far left!!!!
5 0
3 years ago
Point P is the incenter of triangle ABC, PZ = 7 units, and PA = 12 units.
cestrela7 [59]

The complete question is

"Point P is the incenter of triangle ABC, PZ = 7 units, and PA = 12 units.

The radius of the incircle centered at point P is ? units."

The radius of the incircle centered at point P is 7 units.

We are given that point P is the incenter of the triangle, and is the center point of the incircle of the triangle.

<h3>What is incircle?</h3>

The incircle is defined as the largest circle that can be made in a triangle and is tangent to each side of the triangle.

Here, The radius of the circle is going to be a perpendicular line from point P to any side of the triangle.

In the triangle ,

PZ = PY = PX,

Each measure of value is equal to the radius of the circle.

Therefore, we already know that PZ = 7 units making the radius, r = 7 units.

Learn more about  incircle;

brainly.com/question/24280138

#SPJ1

4 0
2 years ago
An equation in point slope form (2,1) and has a slope of m=2
Svet_ta [14]

Answer:

y=2x-3

Step-by-step explanation:

<em>Since we know that the slope-intercept form is </em><em>y=mx+b</em><em>, we can plug in the formula with what we already know to find b!</em>

<em>In the coordinates (2,1): </em>

  • 2 is the x
  • 1 is the y

<em>Now, we will plug these numbers in:</em>

1=2*2+b

1=4+b

b=-3

<em>Now we can rewrite the equation since we found b:</em>

y=2x-3

Hope this helped! :)

8 0
3 years ago
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