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3 years ago

PlEaSe HeLp. I wIlL gIvE 10 pOiNtS.

Mathematics

1 answer:

s344n2d4d5 [400]3 years ago

8 0

-8 I think because it has a pattern

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topjm [15]

Answer:

second equation :

( 20x² — 2xy — 42y² )

Step-by-step explanation:

expand the two brackets.

5 0

3 years ago

If [infinity] cn8n n = 0 is convergent, can we conclude that each of the following series is convergent? (a) [infinity] cn(−3)n

pashok25 [27]

Answer:

a) we know that this is convergent.

b) we know that this might not converge.

Step-by-step explanation:

Given the $\sum^\infty_{n=0}C_n8^n$ is convergent

Therefore,

(a) $\sum^\infty_{n=0}C_n(-3)^n$ The power series $\sum C_nx^n$ has radius of convergence at least as big as 8. So we definitely know it converges for all x satisfying -8<x≤8. In particular for x = -3

∴ $\sum^\infty_{n=0}C_n(-3)^n$ is convergent.

(b) $\sum^\infty_{n=0}C_n(-8)^n$ -8 could be right on the edge of the interval of convergence, and so might not converge

8 0

3 years ago

HELP ME PLS n j j j hjnbhjbhbj

grin007 [14]

Answer:

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

The area of circle can be expressed by the

nadezda [96]

9514 1404 393

Answer:

r = √(A/π)

Step-by-step explanation:

Solve for r. Do this by dividing by the coefficient of the r² term, then taking the square root.

A = πr²

A/π = r²

r = √(A/π)

5 0

3 years ago

4. Kristina is allowed to have a friend sleep over every 3rd weekend,

PSYCHO15rus [73]

Answer:

Step-by-step explanation:

You must find the least common multiple of their schedules.

The numbers 3 and 2 are their own prime factors, so the least common multiple of 3 and 2 is 6.

Six weekends must pass until they can both have someone over on the same night.

The number line below shows that the first time their sleepovers coincide is Week 6.

3 0

3 years ago