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umka2103 [35]
3 years ago
12

Is -660.3 an integer?

Mathematics
2 answers:
Andreas93 [3]3 years ago
4 0

Answer:

no

Step-by-step explanation:

you cannot find this number on a number line. it needs to be a full number with no decimal to be an integer

Brilliant_brown [7]3 years ago
4 0

Answer:

No, it is not.

Step-by-step explanation:

An integer is a number located as a whole number on a number line, or coordinate plane. Due to the fact that the .3 makes it slightly off of -660, it wouldn't be on a plotted point on a number line.

Please mark brainliest :D

Have a wonderful day.

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A sample of 5 buttons is randomly selected and the following diameters are measured in inches. Give a point estimate for the pop
Helen [10]

Answer:

s^2 = \frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}

But we need to calculate the mean with the following formula:

\bar X = \frac{\sum_{i=1}^n X_I}{n}

And replacing we got:

\bar X = \frac{ 1.04+1.00+1.13+1.08+1.11}{5}= 1.072

And for the sample variance we have:

s^2 = \frac{(1.04-1.072)^2 +(1.00-1.072)^2 +(1.13-1.072)^2 +(1.08-1.072)^2 +(1.11-1.072)^2}{5-1}= 0.00277\ approx 0.003

And thi is the best estimator for the population variance since is an unbiased estimator od the population variance \sigma^2

E(s^2) = \sigma^2

Step-by-step explanation:

For this case we have the following data:

1.04,1.00,1.13,1.08,1.11

And in order to estimate the population variance we can use the sample variance formula:

s^2 = \frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}

But we need to calculate the mean with the following formula:

\bar X = \frac{\sum_{i=1}^n X_I}{n}

And replacing we got:

\bar X = \frac{ 1.04+1.00+1.13+1.08+1.11}{5}= 1.072

And for the sample variance we have:

s^2 = \frac{(1.04-1.072)^2 +(1.00-1.072)^2 +(1.13-1.072)^2 +(1.08-1.072)^2 +(1.11-1.072)^2}{5-1}= 0.00277\ approx 0.003

And thi is the best estimator for the population variance since is an unbiased estimator od the population variance \sigma^2

E(s^2) = \sigma^2

3 0
3 years ago
PLZ HURRY Which line is perpendicular to a line that has a slope of One-half? line AB line CD line FG line HJ
Sindrei [870]

Answer:

line FG

Step-by-step Explanation:

In the diagram, line CD passes through

The slope of this line is found using the formula,

We substitute the values to get,

So line CD is the line with slope

From the graph we can see clearly that, the only line that is perpendicular to CD is line FG.

Line FG also passes through

We can verify that the product of these two slopes is negative 1.

Therefore the correct answer is C

3 0
3 years ago
Read 2 more answers
If <img src="https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7By%7D" id="TexFormula1" title="\frac{x}{y}" alt="\frac{x}{y}" align="absmid
Delicious77 [7]
This is your answer say me if I am wrong

4 0
3 years ago
Read 2 more answers
(a) Michael bought 19 pounds of sugar for $8. How many dollars did he pay per pound
Dmitrij [34]

Answer:

A = 2.37500

B = 8.5

Step-by-step explanation:

Explanation A - 19 divided by 8 is 2.37500

Explanation B - 34 divided by 4 is 8.5

6 0
3 years ago
Find a formula for the sum of the first n even positive integers.
melisa1 [442]
So even postive integers are by defention in form 2k where k is a natural number so
let the sum of even integers to n=S
S=2(1+2+3+4+5+6+7+8+......+k-1+k
divide bith sides of equation 1 by 2
0.5S=1+2+3+4+5+...........+k-1+k
S=2(k+(k-1)+..............................+2+1)
divide both sides of equation 2 by 2
0.5S=k+k-1+..............................+2+1)
by adding both we will get
___________________________
S=(k+1)(k)
so the sum will be equal to
S=
{k}^{2}  + k
so let us test the equation
for the first 3 even number there sums will be
2+4+6=12
by our equation 3^2+3=12
gave us the same answer so our equation is correct
7 0
3 years ago
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