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uranmaximum [27]
2 years ago
5

The standard deviation for a set of data is 9.5. The mean is 205.

Mathematics
1 answer:
Anon25 [30]2 years ago
3 0

If the standard deviation for a set of data is 9.5. The margin of error is: 19.5.

<h3>Margin of error</h3>

Using this formula

Margin of error=Standard deviation×Mean

Let plug in the formula

Margin of error=205 × 9.5%

Margin of error = 19.475

Margin of error = 19.5 (Approximately)

Therefore If the standard deviation for a set of data is 9.5. The margin of error is: 19.5.

Learn more about margin of error here:brainly.com/question/14420824

#SPJ1

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I know that is my answer but how do I work it out on notebook paper
dmitriy555 [2]
'karen is making 14 different kinds of greeting cards she is making 12 of each kind how many greeting cards does she making'

 ok so that is multiplication

14 times 12 since it is 12 of each and 14 of them so
14 times 12=


do you guys still do multiplication by the tower meathod or such if so, here it is

14
<span><u>12 x</u>
</span>

so it is
if you had
     a    b
     <u>c</u><span><u>    d x</u></span>
     (ad)(bd)
<u>(bc)(ac)        +</u>
result

first you do
2 times 4 then place it below the 2

14
<span><u>12 x</u>
</span> 8

then you do 2 times 1 then place it below

14
<span><u>12 x</u>
</span>28

then you move on the the one

1 times 4

14
<span><span><u>12 x</u>
</span>28
4

then 1 times 1<span>

</span></span>  14
<span><span>  <u>12 x</u>
</span>  28
14
</span>
then we add

  14
<span><span>  <u>12 x</u>
</span>  28
<u>14    +</u></span>
168
answer is 168


5 0
3 years ago
Read 2 more answers
The expression 1 2 b h 2 1 ​ bhstart fraction, 1, divided by, 2, end fraction, b, h gives the area of a triangle where b bb is t
adoni [48]

Answer:

14cm²

Step-by-step explanation:

Area of a triangle (A) is 1/2bh where;

b is the base of the triangle

h is the height of the triangle

Given the base = 7cm and height = 4cm,

Substituting the given values into the formula of area of a triangle we have;

A = 1/2×7×4

A = 14cm²

Therefore the area of the triangle is 14cm²

4 0
3 years ago
A 42-inch board is to be cut into three pieces so that the second piece is twice as long as the first piece and the third piece
Karo-lina-s [1.5K]

Answer: 7 inches

Step-by-step explanation:

       If x is the first piece, and the second piece is twice as long, then the second piece is 2x.

        If the third piece is three times as long as the first piece, x, then the third piece is 3x.

       The 42-inch board must be equal to all 3 pieces, so we will set up an equation and solve for x.

42 = x + 2x + 3x

42 = 6x

42 = 6x

7 = x

              The first piece is 7 inches long.

<em>Learn more about </em><em>your question</em><em> here: brainly.com/question/20320071</em>

5 0
2 years ago
3. How is the Fundamental Theorem of Algebra true for quadratic polynomials?
myrzilka [38]

Answer:

Step-by-step explanation:

Theorm-The Fundamental Theorem of Algebra: If P(x) is a polynomial of degree n ≥ 1, then P(x) = 0 has exactly n roots, including multiple and complex roots.

Let's verify that the Fundamental Theorem of Algebra holds for quadratic polynomials.

A quadratic polynomial is a second degree polynomial. According to the Fundamental Theorem of Algebra, the quadratic set = 0 has exactly two roots.

As we have seen, factoring a quadratic equation will result in one of three possible situations.

graph 1

The quadratic may have 2 distinct  real roots. This graph crosses the

x-axis in two locations. These  graphs may open upward  or downward.

graph 2

It may appear that the quadratic  has only one real root. But, it  actually has one repeated root.  This graph is tangent to the x-axis  in one location (touching once).

graph 3

The quadratic may have two  non-real complex roots called  a conjugate pair. This graph will  not cross or touch the x-axis, but  it will have two roots.

6 0
3 years ago
Y=1/2x + 3/4
Usimov [2.4K]

0,3/4

1/2,1


X being the first, y second term verify the equation

4 0
3 years ago
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