All Answers 358222 Answers

1 sq meter is 1000mm x 1000 mm

1000 x 1000  / 353 = 2832.86   (if they were SQUARE and not round)

diameter of a nickel  is   353/pi = r^2   r = 10.6mm     Diameter is  21.2    1000/ (21.2) = 47 nickles to a side    47 x 47 = 2209 nickles  ($110.45)

You STILL have to sum them up first while under sqrt sign!!. Remember this √ sign is like brackets. When you are adding two terms, you still have to evaluate them first. Sqrt[ 8^2 + 3^2] is NOT the same as sqrt(8^2) + sqrt(3^2). Suppose you had: sqrt(8 + 3)=sqrt(11)=3.31..... AND sqrt(8) + sqrt(3)=4.56.......As you can see, they are two different things.

sorry the mass of the ball

But that's just the notation that the text uses, actual equation is 

\(\sqrt{}8^2+3^2\)

No brackets, do BODMAS operators which is the squares n the roots first

why not 11?

the squares n the roots cancel each other out

Where is the table?

There are 5 marbles total of which 3 are blue so the chance of getting a blue on on the first draw is  3 out of 5 ...   or 3/5      after you draw one marbel out there are 4 left of which 2 are green.   The chance of getting green is thus  2 out of 4 or  2/4

Now the chance of getting   blue then green is   3/5 x 2/4 =   6/20 = 3/10    or   3 out of 10.

The two sides will have the same length.  Pythagorean Theorem says

a^2 + b^2 = c^2    where 'a' and 'b'   are teh sides and 'c' is the hypot.

AND in this case  a=b     so    2a^2 = 5^2

a^2 = 25/2

a^2 = 12.5

a = sqrt12.5 = 3.54   

correction (1/2)8x is supposed to be the square root of 8x

21!

lexi started her homework at 4 30 she finished at 5 05 how many seconds did it takeher to finish her homework?

You should always specify AM or PM, so that there is no doubt what you mean.

If we use 4:30PM to 5:05PM, then that is 35 minutes X 60 seconds=2,100 seconds.

why doesn't sqrt(8^2+3^2) = 11 ?

Remember the order of operation? First, you have to evaluate the terms INSIDE the brackets.

(8^2 + 3^2)=64 + 9=73. Now, you can see why? Because sqrt(73)=~8.54. IF you had them as separate terms: sqrt(8^2) + sqrt(3^2)=8 + 3 =11. I suppose this is what confused you.

6/5+3/15=6/5+1/5=7/5

m=12/13

5.75

the answer is 7

-3.5

6/4

Oh thank you, I see now!

there is a little button that says x√.

how do I put in the calculator a number such as 2 root 97? I somehow got it to work before but now it won't do it.

Do you mean how to find the square root of 97? Or the 97th root of 2? It is not clear what you want.

12/2=x

6=x

6teams

121 / n² > 8

Multiply both sides by n²; since n² > 0, you don't have to change the direction of the inequality.

121 / n² > 8     --->     121 > 8n²     --->     121/8 > n²    --->     n² < 121/8

This means that:  - sqrt(121/8)  <  n  <  sqrt(121/8)     (with n not equal to zero)

Or:                        - [11 · sqrt(2)] / 4   <   n   <   [11 · sqrt(2)] / 4

To write     x² - 6x + 3     into the form     (x + a)² + b:

Complete the square of the part  x² - 6x  by adding 9     --->     x² - 6x + 9  =  (x - 3)²

However, you cannot change the value of the expression, so if you add 9, you must also subtract 9

--->      (x² - 6x) + 3     --->      (x² - 6x + 9) - 9 + 3      --->     (x² - 6x + 9) - 6     --->     (x - 3)² - 6

So:   x² - 6x + 3   becomes   (x - 3)² - 6

This means that in   (x + a)² + b   the 'a' has value -3   and  the 'b' has value -6.

Note:  to complete the square of  x² - 6x  divide the coefficient of the 'x' term by 2 and square that value.

-6 / 2  =  -3   and  (-3)²  =  9

what would 2200 be after rounding it to the nearest cent? Or does i stay the same?

Have you seen dollars and cents written down? It is like this: $158.27. 158 are dollars and 27 are cents. Your 2200 is just a number and could be anything.