How many significant digits are in 80,000

Answers

Answer 1
Answer: 2 because the equation can be reduced to: 8.0 x 10^4.
Answer 2
Answer: Actually it's 5 because there is no decimal space and if you only include 8 then that means the number is actually 8.

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How do you write this in standard form? (6-7i)/(1-2i)

Answers

\frac { \left( 6-7i \right)  }{ \left( 1-2i \right)  } \cdot 1\n \n =\frac { \left( 6-7i \right)  }{ \left( 1-2i \right)  } \cdot \frac { \left( 1+2i \right)  }{ \left( 1+2i \right)  } \n \n =\frac { 6+12i-7i-14{ i }^( 2 ) }{ 1+2i-2i-4{ i }^( 2 ) }

\n \n =\frac { 6+5i-14\left( -1 \right)  }{ 1-4\left( -1 \right)  } \n \n =\frac { 6+5i+14 }{ 1+4 } \n \n =\frac { 20+5i }{ 5 } \n \n =\frac { 20 }{ 5 } +\frac { 5i }{ 5 } \n \n =4+i

What is the answer to factorise 3D+12

Answers

3D + 12
3(D) + 3(4)
3(D + 4)

0.135 written as a fraction is _____.
5/37
27/100
27/200

Answers

0.315 is the written as a fraction.
convert to fraction
=> 0.315 / 1000
=> 315 / 1000
=> 63 / 200
Thus in the given choices, the answer is not in there.

What is the difference of 85.23 and 2.675?

Answers

Answer: 82.555

Step-by-step explanation: I used a calculator

Write a rational number that is not an integer.

Answers

Any number that you can completely write down with digits is rational.
It doesn't matter whether it's a whole number, a mixed number, a fraction,
or a decimal.

Here are a few:

1.6
3 and 3/4
2.71828
46 million and 1/2
negative 42
A rational is any number that can be written as a fraction and a  integer is a whole number 0.86 = 43/50 so it is a rational, and not a whole number

Let C be between D and E. Use the segment addition postulate to solve for m. DC = 6m − 21 CE = 7m − 18 DE = 65 a. –3 c. 13 b. 5 d. 8

Answers

D-C-E

DC = 6m - 21
CE = 7m - 18
DE = 65

DC + CE = DE
6m - 21 + 7m - 18 = 65
13m - 39 = 65
13m = 65 + 39
13m = 104
m = 104/13
m = 8

DC = 6m - 21 = 6(8) - 21 = 48 - 21 = 27
CE = 7m - 18 = 7(8) - 18 = 56 - 18 = 38