Question

Give the number of significant figures in the following : (a) 0.165 (b) 4.0026 (c ) 0.0256 (d) 201 (e) 0.050 (f) 2.653 xx 10^(4) (g) 6.02 xx 10^(23) (h) 0.0006032

Answer 1

Answer:

concept :

1. all non - zero digits are significant .

2. zeros present to left /right of a number are non - significant however zero present after decimal points are significant .

3. zeros present between two non - zero digits are significant .

(i) 0.0025

according to rule 2 , there are 2 significant figure in 0.0025.

(ii) 208

according to rule 1 and 3 , there are 3 significant figures in 208.

(iii)5005

according to rule 1 and 3, there are 4 significant figures in 5005.

(iv) 126000

according to rule 2,there are 3 significant figures in 126000.

(v) 500.0

according to rule 2 , there are 4 significant figures in 500.0

(vi) 2.0034

according to rule 2, there are 5 significant figures in 2.0034

Answer 2

Solve the following by both substitution and elimination methods.

$2x - \sqrt{2} y = 0$

and

$\frac{3x}{ \sqrt{2} } - y = 1$

Solve the following by both substitution and elimination methods.

$2x - \sqrt{2} y = 0$

and

$\frac{3x}{ \sqrt{2} } - y = 1$

Solve the following by both substitution and elimination methods.

$2x - \sqrt{2} y = 0$

and

$\frac{3x}{ \sqrt{2} } - y = 1$

Solve the following by both substitution and elimination methods.

$2x - \sqrt{2} y = 0$

and

$\frac{3x}{ \sqrt{2} } - y = 1$

Solve the following by both substitution and elimination methods.

$2x - \sqrt{2} y = 0$

and

$\frac{3x}{ \sqrt{2} } - y = 1$

Solve the following by both substitution and elimination methods.

$2x - \sqrt{2} y = 0$

and

$\frac{3x}{ \sqrt{2} } - y = 1$

Solve the following by both substitution and elimination methods.

$2x - \sqrt{2} y = 0$

and

$\frac{3x}{ \sqrt{2} } - y = 1$

Solve the following by both substitution and elimination methods.

$2x - \sqrt{2} y = 0$

and

$\frac{3x}{ \sqrt{2} } - y = 1$

Solve the following by both substitution and elimination methods.

$2x - \sqrt{2} y = 0$

and

$\frac{3x}{ \sqrt{2} } - y = 1$

Solve the following by both substitution and elimination methods.

$2x - \sqrt{2} y = 0$

and

$\frac{3x}{ \sqrt{2} } - y = 1$

Solve the following by both substitution and elimination methods.

$2x - \sqrt{2} y = 0$

and

$\frac{3x}{ \sqrt{2} } - y = 1$

Solve the following by both substitution and elimination methods.

$2x - \sqrt{2} y = 0$

and

$\frac{3x}{ \sqrt{2} } - y = 1$

Solve the following by both substitution and elimination methods.

$2x - \sqrt{2} y = 0$

and

$\frac{3x}{ \sqrt{2} } - y = 1$

Solve the following by both substitution and elimination methods.

$2x - \sqrt{2} y = 0$

and

$\frac{3x}{ \sqrt{2} } - y = 1$

Solve the following by both substitution and elimination methods.

$2x - \sqrt{2} y = 0$

and

$\frac{3x}{ \sqrt{2} } - y = 1$