Find the value of 6-50- 6-30-

The correct option is C 6^ 20Using a^m÷ a^n=a^m n 6^ 50÷ 6^ 30 =6^ 50 ( 30) =6^( 50 +30) =6^ 20 ...

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Standard VII

Mathematics

Exponents with Like Bases

Find the valu...

Question

Find the value of $6^{- 50} \div 6^{- 30}$ .

6^{- 80}

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6^{20}

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6^{- 20}

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6^{80}

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Solution

The correct option is C $6^{- 20}$
$U s i n g a^{m} \div a^{n} = a^{m - n}$

$6^{- 50} \div 6^{- 30}$

$= 6^{- 50 - (- 30)}$

$= 6^{(- 50 + 30)}$

$= 6^{- 20}$

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Similar questions

Q. Find the value of

x

and

y

if the median for the following data is

31

$C I$	$0 - 10$	$10 - 20$	$20 - 30$	$30 - 40$	$40 - 50$	$50 - 60$	Total
Frequency	$5$	$x$	$6$	$y$	$6$	$5$	$40$

Q. Find the value of

x

x : 5 :: 6 : 30

Q. Find variance for following data:

Class	$0 - 10$	$10 - 20$	$20 - 30$	$30 - 40$	$40 - 50$	$50 - 60$	$60 - 70$
frequency	$6$	$5$	$8$	$15$	$7$	$6$	$3$

Q. Draw a 'less than' ogive from the following data and hence find out the value of Median.

Class	20-25	25-30	30-35	35-40	40-45	45-50	50-55	55-60
Frequency	6	9	13	23	19	15	9	6

The value of $(\frac{50}{6}) - (\frac{5}{1}) (\frac{40}{6}) + (\frac{5}{2}) (\frac{30}{6}) - (\frac{5}{3}) (\frac{20}{6}) + (\frac{5}{4}) (\frac{10}{6}) w h e r e (\frac{n}{r}) d e n o t e s^{n} C_{r}$ is

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Find the value of 6−50÷6−30.

The correct option is C 6−20Using am÷an=am−n 6−50÷6−30 =6−50−(−30) =6(−50+30) =6−20

Find the value of $6^{- 50} \div 6^{- 30}$ .

The correct option is C $6^{- 20}$
$U s i n g a^{m} \div a^{n} = a^{m - n}$

$6^{- 50} \div 6^{- 30}$

$= 6^{- 50 - (- 30)}$

$= 6^{(- 50 + 30)}$

$= 6^{- 20}$