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stepan [7]
3 years ago
11

If the standard deviation for a set of data is​ 0, which of the following must be​ true?

Mathematics
1 answer:
luda_lava [24]3 years ago
7 0

Answer:

C. All of the data values are identical.

Step-by-step explanation:

If the standard deviation for a set of data is​ 0, then all of the data values are identical.

When a standard deviation is 0, then the variance is also 0 and the mean of the deviation that is squared is also 0, thereby making all the values identical to the mean, that is 0.

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Which statements are true for the following expression? (9 + 3) · 4
ss7ja [257]

Answer:

12 x 4   or  48

Step-by-step explanation:

6 0
3 years ago
Let f(x) be a quartic polynomial with integer coefficients and four integer roots. Suppose the constant term of f(x) is 6.(a) Is
frez [133]

Answer:

  (a) yes

  (b) no; see below

Step-by-step explanation:

(a) Integer roots of the quartic will be integer divisors of 6. One of the divisors of 6 is 3, so 3 is a possible root.

(b) In order for 3 to be a double root, it would have to be a double factor of 6. The only integer factors of 6 are 1, 2, 3, 6. (3² = 9 is not one.)

___

The quartic can be written as ...

  k(x -a)(x -b)(x -c)(x -d) . . . . . where a, b, c, d, k are integers

The constant term will be kabcd, of which each of the roots is a factor. If the constant is 6 and one root is d=3, then we must have

  kabcd = 3kabc = 6

  kabc = 6/3 = 2

Among these four integer factors, there must be an even number of minus signs, and one that has the value ±2. Another root whose value is 3 will not satisfy the requirements.

3 0
3 years ago
How do u find the slope of (6,-10), (-15,15)
Sergeu [11.5K]
m = \frac{y_{2} - y_{1}}{x_{2}-  x_{1}} = \frac{15 - (-10)}{-15 - 6} = \frac{15 + 10}{-21} = \frac{25}{-21} = -1\frac{4}{21}

     y - y₁ = m(x - x₁)
y - (-10) = -1⁴/₂₁(x - 6)
   y + 10 = -1⁴/₂₁(x) + 1⁴/₂₁(6)
   y + 10 = -1⁴/₂₁x + 7¹/₇
       - 10              - 10
           y = -1⁴/₂₁x - 3¹/₇
7 0
3 years ago
What is x solve the equation <br>a(x + b)-C=d​
Nadya [2.5K]

Answer:

x = d/ a + c / a - b

Step-by-step explanation:

a( x + b ) - c = d

add c on both sides

a( x + b) = d + c

ax + ab = d + c

subtract ab from both sides

ax = d + c - ab divide both sides by a

ax / a = d/ a + c/ a - ab / a

x = d/ a + c / a - b

6 0
3 years ago
Find the slope between the following points, show all work.<br> (-8, 19) and (-3, 13)
Ymorist [56]
Slope formula:

m = (y2-y1)/(x2-x1)
m = (13-19)/(-3-(-8))
m = (13-19)/(-3+8)
m = -6/5

The slope is therefore -6/5
4 0
3 years ago
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