All Answers 358090 Answers

7 billion feet or in miles 189393.

what fraction of the squareroot of 64 is 2 to the second power

\( a*\sqrt{64}=2^2\\ 8a=4\\ a=\frac{1}{2}\)

What is the mean median and mode for 

6 , 9 , 14,  1, 12, 12, 25

Mean=79/7=11.286

Median=12

Mode=12

1  6  9 12  12  14  25        Mode is the number that appears the most frequently = 12  

                                          Median is the number that has the same number above it and below it...it is in the middle of the list of numbers    = 12

                                            Mean is the average of the numbers  ...add them all up and divide by 7    = 11.286

Since we are compounding MONTHLY, we need to look at the MONTHLY INTEREST RATE    (assuming APR does NOT account for compounding already)

2.75 / 12 = .229167 % / month

12 years is 12 x12 interest periods (months) = 144

fv = pv (1+ i ) ^t     where i is interest rate in decimal  = .00229167    and t is the time periods  144    fv = future value  pv = present value (5700)

fv = 5700 (1+ .00229167)^144  =  7925.53

88/4=$22 cost per person for 4 people

180/10=$18 cost person for 10 people

1 - (18/22) =.1818 x 100 =18.18% discount per person for 10 people.

80/3.5%(1-(1/(103.5%)^20))+100/(103.5%)^20

=1,187

Factor the following:
108-75 z^2

Factor -3 out of 108-75 z^2:
-3 (25 z^2-36)

25 z^2-36 = (5 z)^2-6^2:
-3(5 z)^2-6^2

Factor the difference of two squares. (5 z)^2-6^2 = (5 z-6) (5 z+6):
Answer: |   -3(5 z-6) (5 z+6)

land covers 29.2 of the earth's surface or 43 508 000km2. how many square km is the earth's surface

and

water covers 70.8 of the earth's surface. how many sqaure km of water are on the earth's surface

I think you got some of your figures wrong!!. It is true that land covers 29.2% of the Earth's surface, which comes to about 149,000,000 Km^2. Therefore, the total surface area of the Earth is: 149,000,000/.292=~510,000,000 Sq.Km. Then you have:510,000,000 x .708=361,000,000 Sq.Km of water that covers the Earth's surface.

hey. know pemdas? follow that.

it goes

parentheses

exponents

multiplication and division

addition and subtraction

so

(18 + 17) (12 + 9) - (7 x 16) (4 + 2) 

Begin by multiplying 7 and 16 to get 112. Then do the adding and subtracting inside the parentheses.

to get:

(35)(21)-(112)(6)

Then multiply the 35 with 21 and the 112 with 6.

735-672

which is equal to

= 63

when you have some positive integer n, n! = n * (n-1) * (n-2) * ..... 3*2*1

also, 0! = 1 I forgot why but they never told me that in high school so it's worth noting.

6! = 1*2*3*4*5*6

is that good enough :)

2.25/2.5  x  15.60  =  14.04

As a ratio   15.60/2.50  =  x / 2.25     15.60/2.5  * 2.25 = x  = 14.04

I do not say   2 choose1   

I would simply say    ²C₁       and in the same vein I'd say      ²P₁      for a permutation.  (I'd just use the letter name)

There are lots of different notations for these.  When I am writing by hand I do it the way I just showed you, with thew first number as a superscript and the second as a subscript but if I was being lazy with typing i'd say   2C1

Sometimes the 2 are presented in brackets with the 2 above the 1. (That is just for combinations)

2 to the second power   is   2^2 = 4

Sqrt (64) = 8                                            the fraction of 4 to 8   is 4/8 = 1/2

A square root is the same as a fractional exponent. 2 to the second power is 4, so what root or fractional exponent would you need to bring 64 down to four. The cube root of 64 is 4, so the fractional exponent must be 1/3, so your answer is 1/3 since 4³=64. To put this into a better perspective, 4²=16, and 16^1/2=4.

29.2 /4350800  =  100/x

x = 100/29.2  * 4350800 = 14,900,000  sq km

As a ratio:

70.8/29.2  =  x/ 43508000

x =  70.8/29.2   * 4350800  =  10,549,200 sq km

If you need to square negative twelve , you have to do it like this:  (-12)^2 = 144   (must use parentheses....)

Order of operations. When a calculator sees -12², it sees it as 12² * -1 due to order of operations. So it calculates the 12² first and then multiplys it by -1. In order to get the correct answer which is 144, you must use parenthesises and put the -12 inside so it looks like this:(-12²). Hope this helped.

22.8571428571428571428571428571428571428610198

\(3:50\)

or

\(\frac{3}{50}\times100\)

\(\frac{300}{50}\)

6%

You have a \(3\) in \(50\) chance or 6% chance of contracting the virus.

Likewise

\(50:50-3:50\)

\(47:50\)

or

\(\frac{50}{50}-\frac{3}{50}\times100\)

\(\frac{47}{50}\times100\)

\(\frac{4700}{50}\)

94%

You have a \(47\)in \(50\) chance or 94% chance of not contracting the virus.

Since you want the odds against you then you need to take the odds for you (3/50) and subtract them from a 1 to 1 odd (50/50).

You will get 47/50 or 94%