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3 years ago

Eight people enter a race. If there are no ties, in how many ways can the first two places come out

1 answer:

8 0

Since there is no ties:

The 1st place could be obtained in 8 ways (each one could be first)
Now that the 1st place is occupied, the remaining pretenders to te 2nd place are 7 people

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PLEASE ANYONE?: A number is chosen at random from a set of whole number from 1 to 50. Calculate the probability that the chosen

crimeas [40]

Answer:

Take 10 and add it 5 times

Step-by-step explanation:

5 divided by 50 is 10

8 0

1 year ago

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An art museum has 1042 pictures of split equally into 45 different exhibits how many more pictures does a museum need to make su

tatyana61 [14]

He needs 1080 I believe so 38
because 1042 divided for 45 museums would be 23.15 meaning it wouldn't be the same amount for all
but if they get 38 pictures (1080) and divide it between the 45 museums it would be an even number of 24
so the answer is 38 more pictures

5 0

3 years ago

Use long division to determine the decimal equivalent of 8/9

pickupchik [31]

See image below it keeps going

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2 years ago

Mathematics 13 don’t understand

UNO [17]

Answer:

1/6^3

Step-by-step explanation:

The applicable rules of exponents are ...

a^-b = 1/a^b

(a^b)(a^c) = a^(b+c)

Your expression can be simplified as follows:

$\dfrac{6^{-5}}{6^{-2}}=\dfrac{1}{(6^{-2})(6^5)}=\dfrac{1}{6^{-2+5}}=\boxed{\dfrac{1}{6^3}}$

_____

<em>Additional comment</em>

If you think of an exponent as signifying repeated multiplication, the rules of exponents may be easier to remember. The exponent tells you how many times the base is a factor in the product.

Consider multiplication:

$(x\cdot x\cdot x)\cdot(x\cdot x)=x^3\cdot x^2=x^{3+2}=x^5\\\\(x\cdot x\cdot x)\cdot(x\cdot x\cdot x)=(x^3)^2=x^{3\cdot2}=x^6$

Consider division:

$\dfrac{x\cdot x\cdot x}{x\cdot x}=x\quad\Longleftrightarrow\quad\dfrac{x^3}{x^2}=x^{3-2}=x^1\\\\\dfrac{x\cdot x}{x\cdot x\cdot x}=\dfrac{1}{x}\quad\Longleftrightarrow\quad\dfrac{x^2}{x^3}=x^{2-3}=x^{-1}$

This may help you see that a positive exponent in the denominator is equivalent to a negative exponent in the numerator (and vice versa).

6 0

2 years ago

What is the volume of this triangular prism?

Tresset [83]

Answer:

972cm^3

Step-by-step explanation:

use the formula for a rectangular prism base x height x length but then divid by two because it is a triangular prism.

multiply 18 x 12 x 9 then divide by 2

5 0

3 years ago

Read 2 more answers