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Vinvika [58]
3 years ago
5

If 2 > -a, then _____

Mathematics
1 answer:
max2010maxim [7]3 years ago
7 0

Answer:

-2 < a

Step-by-step explanation:

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Write the sum or difference in the standard form a + bi.( 3 + 3i) - ( -6 + i)
fiasKO [112]
The answer is 9+2i 

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7 0
3 years ago
Charles has 9 times as many red marbles as blue marbles.
djyliett [7]

Answer:

  • 314 red marbles

Step-by-step explanation:

Red = r, blue = b,

  • r = 9b
  • r = b + 288

Substitute:

  • 9b = b + 288
  • 8b = 288
  • b = 288/8
  • b = 26

Red marbles:

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6 0
3 years ago
A certain ore contains 21 percent gold. How much ore (in tons) is needed to obtain 882 tons of gold?
krok68 [10]

Answer:

it would be 4200 ore

Step-by-step explanation:

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6 0
2 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
5y − x =10 , solve the equation for y?
jek_recluse [69]

Answer:

-2

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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