3 years ago

How do you write 0.000081 in scientific notation?

Mathematics

1 answer:

Alex73 [517]3 years ago

6 0

Scientific notation: 8.1x10^-5

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at the fish market, a whole fish costs $4.20. If the body costs $1 more than the tail, and the body costs $2 more than the head,

weqwewe [10]

Answer:

$ 0.4

Step-by-step explanation:

if we assume head costs $ x then,

body will cost $x + 2 (2 more than head)

and tail will cost $x+1

x+x+2+x+1 = $ 4.20

or, 3x = 4.20-3

or, x= 1.20/3

therefore, x=0.4

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2 years ago

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Given the sequence 8, 16, 32, 64, ..., which expression would give the thirteenth term?

mrs_skeptik [129]

8, 16, 32, 64,…
×2 ×2 ×2

$a_{n} = a_{1} * r^{n - 1}$
$a_{n} = 8 * 2^{13 - 1}$
$a_{n} = 8 * 2^{12}$
$a_{n} = 8 * 4096$
$a_{n} = 32768$

   First Term: 8
      Second Term: 16
      Third Term: 32
      Fourth Term: 64
       Fifth Term: 128
      Sixth Term: 256
   Seventh Term: 512
   Eighth Term: 1024
   Ninth Term: 2048
      Tenth Term: 4096
   Eleventh Term: 8192
   Twelfth Term: 16384
Thirteenth Term: 32768

$The\ expression\ that\ would\ give\ the\ thirteenth\ term\ of\ the\ problem\ would\ be\ the\ equation\ of\ the\ geometric\ sequence,\ which\ is\ equal\ to\ a_{n} = a_{1} * r^{n - 1}.$

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3 years ago

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3/4=3/8x-3/2 what is the answer for this?

Nonamiya [84]

The answer is x=6 ;)

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3 years ago

Find the measure of angle C of a triangle ABC, if angle A=a and angle B= 2a.

erma4kov [3.2K]

3.14 - 3a Radians

Because
180o = 3.14 radian

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