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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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Roger gets $40 per day as wages and $4.50 as commission for every pair of shoes he sells in a day. His daily earnings goal is $1
Mila [183]

Answer:

40+4.50x+112

16 shoes daily to make his goal

Step-by-step explanation:

to find how much shoes he would have to sell take away 40 from both sides of the equation which would leave you with 4.50x=72 next divide 4.50 out of both sides of the equation x=16 so he would have to sell 16 pairs of shoes a day to meet his goal

3 0
2 years ago
Read 2 more answers
Express in simplest radical form.<br> V40
Andrews [41]

Answer:

\huge\boxed{2 \sqrt{10}}

Step-by-step explanation:

When taking a square root and making it a radical, we need to list out it's factors and find which one we can take the square root of.

The factors of 40 are:

1, 2, 4, 5, 8, 10, 20, 40.

Out of these, we need to look for one that we can find the square root of.

We know that the square root of 4 is 2.

Therefore, we can make \sqrt{40} into \sqrt{4 \cdot 10}.

The square root of 4 is 2. Therefore, we can put that outside the radical.

2 \sqrt{10}.

Hope this helped!

7 0
3 years ago
Expand the following expression by using the distributive method.<br> 3(4x + 5y)
Liula [17]
Answer: 12x + 15y

Explanation:
1. 3 x 4x + 3 x 5y
2. 12x + 15y

This expression can not be expanded further because there are no like terms.

Hope this helps :)
8 0
3 years ago
What is the domain of the function? y=3√x-1
geniusboy [140]
X - 1 is inside a cubic root.
The cubic root of a positive number is positive.
The cubic root of zero is zero.
The cubic root of a negative number is negative.
That means that the cubic root of any real number is also a real number.
The domain is all real numbers.
Answer: Choice A.
3 0
3 years ago
Marriyam was given $75 for a birthday present. She's going to use that gift, plus the earnings from her summer job, to buy a ska
DanielleElmas [232]

Answer:

250.

Step-by-step explanation:

She Has 75 In Total,

Skateboard Costs = 325 Dollars.

75-325 = 250, So She Needs To Earn 250.

Since 1 Hour = 1 Dollar,

She Needs To Work 250 Hours.

I Apologize For A Wrong Answer Incase.

4 0
3 years ago
Read 2 more answers
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