3 years ago

I need an answer ASAP

Mathematics

1 answer:

xeze [42]3 years ago

8 0

It is the 3rd one your welcome

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How do i do 3 part a ?

WINSTONCH [101]

In general the binomial expansion is

$(a+b)^n = {n \choose 0} a^0 b^n + {n \choose 1} a^1 b^{n-1} + {n \choose 2} a^2 b^{n-2} + ... + {n \choose n} a^n b^0$

So in our case, because we want ascending powers of x we'll write,

$(-3x + 1)^{11} = {11 \choose 0} (-3x)^0 1^{11} + {11 \choose 1} (-3x)^{1} 1^{10} + {11 \choose 2} (-3x)^{2} 1^9 + {11 \choose 3 } (-3x)^3 1^8 + ...$

We need to calculate the binomial coefficients:

${11 \choose 0} = 1$

${11 \choose 1} = 11$

${11 \choose 2} = \dfrac{11 \times 10}{2} = 55$

${11 \choose 3} = \dfrac{11 \times 10 \times 9}{3 \times 2} = 165$

$(-3x+1)^{11} = 1 (-3x)^0 1^{11} + 11(-3x)^{1} 1^{10} + 55 (-3x)^2 1^{9} + 165 (-3x)^3 1^8 + ...$

$(1-3x)^{11} = 1 -33 x + 495 3x^2 - 4455 x^3+ ...$

6 0

3 years ago

Mr. David monthly salary is revised from $2500 to $2600.What percentage is the salary increased

Sveta_85 [38]

Answer:

4% Hope this helped.

Step-by-step explanation:

The formula is: final value minus starting value divided by the starting value then times 100

THIS FORMULA ONLY APPLIES TO PERCENT INCREASE

<u>Final Value−Starting Value</u>

Starting Value x100

Plug numbers in

2600-2500/2500 x 100

100/2500=0.04

0.04x100

=4%

5 0

3 years ago

Read 2 more answers

Show work answer quick will give thank you's etc.

forsale [732]

Answer:

f(3) = -11

Step-by-step explanation:

f(3) means you sub the value that is inside into x

f(3) = -3(3) - 2

= -9 - 2

= -11

7 0

3 years ago

Please help me with this question. Thank you :)

Harrizon [31]

80°...................

3 0

3 years ago

Find the resistances of two resistors connected in parallel where one

Anon25 [30]

Answer:

R1 = 6 ohm

R2 = 3 ohm

Step-by-step explanation:

check the attached picture for step by step solution

8 0

2 years ago