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3 years ago

Help please :( and thanks!!!

Mathematics

2 answers:

victus00 [196]3 years ago

6 0

C is the answer I’m 99% sure :)

Oxana [17]3 years ago

4 0

C is the correct answer

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What is the y-intercept of the graph of the equation y=4x(3x) A; (0,4) B: (0,3) C;(0,12) D:(0,8)

Alchen [17]

Answer:

To find y intercept x should be 0.

And in this.

Y=4x.3x

Y=4*0*3*0

Y=0 answer.

4 0

2 years ago

Calculate the gradient of the straight line which joins A(2,-3) and B(6,9)<br>

Pie

Answer:

Gradient: m = 3

Step-by-step explanation:

m = change in y/change in x

m = $\frac{Y2-Y1}{X2-X1}$

m = $\frac{9-(-3)}{6-(2)}$

m = 12/4

m = 3

5 0

3 years ago

Find a compact form for generating functions of the sequence 1, 8,27,... , k^3

pantera1 [17]

This sequence has generating function

$F(x)=\displaystyle\sum_{k\ge0}k^3x^k$

(if we include $k=0$ for a moment)

Recall that for $|x|$ , we have

$\displaystyle\frac1{1-x}=\sum_{k\ge0}x^k$

Take the derivative to get

$\displaystyle\frac1{(1-x)^2}=\sum_{k\ge0}kx^{k-1}=\frac1x\sum_{k\ge0}kx^k$

$\implies\dfrac x{(1-x)^2}=\displaystyle\sum_{k\ge0}kx^k$

Take the derivative again:

$\displaystyle\frac{(1-x)^2+2x(1-x)}{(1-x)^4}=\sum_{k\ge0}k^2x^{k-1}=\frac1x\sum_{k\ge0}k^2x^k$

$\implies\displaystyle\frac{x+x^2}{(1-x)^3}=\sum_{k\ge0}k^2x^k$

Take the derivative one more time:

$\displaystyle\frac{(1+2x)(1-x)^3+3(x+x^2)(1-x)^2}{(1-x)^6}=\sum_{k\ge0}k^3x^{k-1}=\frac1x\sum_{k\ge0}k^3x^k$

$\implies\displaystyle\frac{x+4x^3+x^3}{(1-x)^4}=\sum_{k\ge0}k^3x^k$

so we have

$\boxed{F(x)=\dfrac{x+4x^3+x^3}{(1-x)^4}}$

5 0

3 years ago

How do you say 33 091 in word

LekaFEV [45]

Thirty three thousand and ninety one

5 0

3 years ago

Read 2 more answers

Michael needs at least $200 to buy airpods. He already has $50. If he saves $15 each week, how many weeks will it take for Micha

DerKrebs [107]

Answer:

it will take him 3 weeks to reach is goal.

Step-by-step explanation:

if michael needs $200 and he already has 50 then 200-50 is 150. then you divide 150 divided by 15 to get 3

hopethis helped.

3 0

2 years ago