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Masteriza [31]
3 years ago
15

Sir? sir? are u there? help me -_-

Mathematics
1 answer:
vfiekz [6]3 years ago
5 0

Answer:

a) The easiest way is to use a calculator such as a Casio brand or Sharp brand and key in 9C7 to get 36.

However, you can also use this formula: nCr=\frac{n!}{r!(n-r)!} where n is the total number of items and r is how many you are selecting.

Plug in values:

\frac{9!}{7!(9-7)!} =\frac{9!}{7!*2!}=\frac{9*8}{2!}=36

b) The easiest way is to use a calculator such as a Casio brand or Sharp brand and key in 9P7 to get 181440.

However, you can also use this formula: nPr=\frac{n!}{(n-r)!} where n is the total number of items and r is how many you are selecting.

Plug in values:

\frac{9!}{(9-7)!} =\frac{9!}{2!}=9*8*7*6*5*4*3=181440

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Step-by-step explanation:

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5 0
2 years ago
Twice a certain number is 58. 4 times that number will be <br> a) 4x58 b) 58 + 4 c) 58x2 d)8x58
irga5000 [103]

Answer:

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2 years ago
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RideAnS [48]
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x(t) is the positon function
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we are given f'(x), the derivitive of f(x)
we want to find where it is increasing AND where it is concave down

it is increasing when the derivitive is positive, so just find where the graph is positive (that's about from -2 to 4)

it is concave down when the second derivitive (aka derivitive of the first derivitive aka slope of the first derivitive) is negative
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from about x=0 to x=2
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4 0
3 years ago
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4 0
3 years ago
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