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3 years ago

An equation that is true for every value of the variables is a(n)

2 answers:

7 0

I pretty sure its called a called an [b] identity [/b]. i remember learning this and i am almost certain that this is what it's called

Roman55 [17]3 years ago

5 0

Identity, For example, x + x = 2x is true for every value of x.

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Each morning, Hungry Harry eats some eggs. On any given morning, the number of eggs he eats is equally likely to be 1, 2, 3, 4,

mamaluj [8]

Answer:

Mean = 35

Variance = 291.7

Step-by-step explanation:

Data provided in the question:

X : 1, 2, 3, 4, 5, 6

All the data are independent

Thus,

The mean for this case will be given as:

Mean, E[X] = $\frac{\textup{Sum of all the observations}}{\textup{Total number of observations}}$

E[X] = $\frac{\textup{1+2+3+4+5+6}}{\textup{6}}$

E[X] = 3.5

For 10 days, Mean = 3.5 × 10 = 35

And,

variance = E[X²] - ( E[X] )²

Now, for this case of independent value,

E[X²] = $\frac{1^2+2^2+3^2+4^2+5^2+6^2}{\textup{6}}$

E[X²] = $\frac{1+4+9+16+25+36}{\textup{6}}$

E[X²] = $\frac{91}{\textup{6}}$

E[X²] = 15.167

Therefore,

variance = E[X²] - ( E[X] )²

variance = 15.167 - 3.5²

Variance = 2.917

For 10 days = Variance × Days²

= 2.917 × 10²

= 291.7

3 0

3 years ago

Which answer choice shows 21.97 written in expanded form? A. 2 + 1 + 9 + 7 B. 20 + 1 + 0.9 + 0.7 C. 20 + 10 + 0.9 + 0.07 D. 20 +

Simora [160]

Answer:

20 + 1 + 0.9 + 0.07

Step-by-step explanation:

Given the number 21.97 ;

To wite in expanded form:

Tens ___ Unit ____ tenth ____ hundredth

2_______ 1 _______ 9_________ 7

2 = 20

1 = 1

9 = 0.9

7 = 0.07

Hence,

20 + 1 + 0.9 + 0.07

6 0

3 years ago

Both questions are on the picture

olga2289 [7]

Answer:

the first one is m, the second one is 5

5 0

2 years ago

Read 2 more answers

On her pogo stick , Lula made 24 hops in 30 seconds. At this rate, how many hops will she make in 40 seconds?

Thepotemich [5.8K]

Answer:fifty hops

Step-by-step explanation: 30/24=1.25 so ever second bounced she does 1.25 hops and therefore in forty seconds she will hop fifty times

7 0

3 years ago

What is the absolute value of -36

zlopas [31]

The answer is 36 because -36 turns into 36

4 0

3 years ago