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galina1969 [7]
3 years ago
5

5th term in expansion of (x-2)^7

Mathematics
1 answer:
jeka943 years ago
7 0

Answer:

560x^3

Step-by-step explanation:

The formula is

(r + 1)th term of (a + x)^n = nCr a^(n-r)x^r

So 5th term = (4 + 1)th term

= 7C4 x^(7-4) (-2)^4

=  35x^3*16

= 560x^3

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A rectangular fish tank is 50 cm long, 40 cm wide, and 30 cm high.
Alexxx [7]

Answer:

a) 60,000 cubic cm; b) 60,000 mL; c) 60 L

Step-by-step explanation:

a) V = l x w x h

V = 50 cm x 40 cm x 30 cm = 60,000 cubic cm

b) 1 cubic cm = 1 mL, therefore 60,000 cubic cm = 60,000 mL

c) 1000 mL = 1 L; 60,000 mL = 60 L

5 0
2 years ago
Rearrange x=3g+2 to make g the subject
Vinil7 [7]
The answer for ur question is
x=3g+2
x-2=3g
(x-2)/3 =g
g= (x-2)/3

HOPE THIS HELPS !!!

^_^ HAPPY TO HELP YA ^_^



5 0
3 years ago
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A train leaves L.A. at 2pm and heads north at 50mph. If the next train leaves the station 3 hours later and heads north at 60 mp
yaroslaw [1]

Answer:

  • 8 AM

Step-by-step explanation:

  • Start time = 2 PM
  • Speed of the first train = 50 mph
  • Speed of the second train = 60 mph
  • Trains head same direction
  • The second train spends 3 hour less time than the first but both take same distance

<u>Let the time in travel for the first train be x, then we have equation for distance:</u>

  • 50x = 60(x - 3)
  • 50x = 60x - 180
  • 60x - 50x = 180
  • 10x = 180
  • x = 18 hours

<u>Time when the second train caches up the first one:</u>

  • 2 PM + 18 hours = 8 AM next day
8 0
3 years ago
Which sums are equal to -8 + 17? Select all that apply
saw5 [17]

Answer:

B and C

Step-by-step explanation:

A = -25

B = 9

C = 9

D = -9

E = -25

6 0
3 years ago
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Lorico [155]

Answer:

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7 0
2 years ago
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