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horsena [70]
3 years ago
15

What are Numbers? Why do we need them?​

Mathematics
1 answer:
il63 [147K]3 years ago
3 0
A number is a mathematical object used to count, measure, and label
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A fair coin is tossed 5000 times. What can you say about getting the outcome of exactly 2500 tails
WINSTONCH [101]

Step-by-step explanation:

You can't expect to get exactly 2500 out of 5000 tosses more than a few times . You will come pretty close, but that's only good in horseshoes.

Of course I'm answering this on the basis of a computer language and not actually performinig this a million tmes, each part of a million consisting of 5000 tosses.

Simulations and not completely unbiased, but based on experience, 5000 is a very small number and getting 2500 more than a couple of times is unlikely

6 0
3 years ago
Read 2 more answers
Please help me thank you.
Alona [7]

Answer:

\large\boxed{1.\ (4)^{-3x^2}=\left(\dfrac{1}{4}\right)^{3x^2}}

\large\boxed{2.\ ab^{-3x}=a\left(\dfrac{1}{b}\right)^{3x}=a\left[\left(\dfrac{1}{b}\right)^3\right]^x}

Step-by-step explanation:

Use:\ a^{-n}=\left(\dfrac{1}{a}\right)^n\\------------\\\\(4)^{-3x^2}=\left[(4)^{-1}\right]^{3x^2}=\left(\dfrac{1}{4}\right)^{3x^2}

Use:\ a^{-n}=\left(\dfrac{1}{a}\right)^n\ and\ (a^n)^m=a^{nm}\\--------------------\\\\ab^{-3x}=a\cdot b^{-3x}=a\left[(b)^{-1}\right]^{3x}=a\left(\dfrac{1}{b}\right)^{3x}\\\\ab^{-3x}=a\left(\dfrac{1}{b}\right)^{3x}=a\left[\left(\dfrac{1}{b}\right)^3\right]^x

8 0
3 years ago
1/10 + 20/100=<br> 2/3+ 1/4 =<br><br> ANSWERS ASAP!!<br> RIGHT ANSWERS GET AUTOMATIC BRAINLYEST
Bess [88]

Answer:

\frac{1}{10}  +  \frac{20}{100}  =  \frac{10}{100}  +  \frac{20}{100}  =  \frac{30}{100}

\frac{2}{3}  +  \frac{1}{4}  =  \frac{8}{12}  +  \frac{3}{12}  =  \frac{11}{12}

7 0
3 years ago
Read 2 more answers
(1 point) All that is left in a packet of candy are 7 reds, 3 greens, and 3 blues.
Sauron [17]

Answer:

A 21 /169

B independent

Step-by-step explanation:

The total number of candies is 7+3+3 = 13

P( 1st red) = red/total = 7/13

Since the candy is put back there are still 13 candies in the dish

P(2nd green) = green/total = 3/13

P( red, then green) = P( 1st red) * P(2nd green)

                                = 7/13* 3/13 = 21/169

The events are independent since the candies are put back

4 0
3 years ago
What is 0.6 divided by 10 to the negative 2 power
nika2105 [10]

0.6/10^-2

 move the decimal 2 places to the right

0.6 becomes 60

 answer is 60

8 0
3 years ago
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