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Exponents and Powers

Short Answer Type

31.

Find 'm' so that $left parenthesis negative 3 right parenthesis to the power of straight m plus 1 end exponent space cross times space left parenthesis negative 3 right parenthesis to the power of 5 space equals space left parenthesis negative 3 right parenthesis to the power of 7.$

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32.

Find the value of $open parentheses 2 over 3 close parentheses to the power of negative 2 end exponent$

74 Views

33.

Simplify:

(i) $open parentheses 5 over 8 close parentheses to the power of negative 7 end exponent space cross times space open parentheses 8 over 5 close parentheses to the power of negative 5 end exponent$ (ii) $open curly brackets open parentheses 1 third close parentheses to the power of negative 2 end exponent minus open parentheses 1 half close parentheses minus 3 over 4 close curly brackets divided by open parentheses 1 fourth close parentheses to the power of negative 2 end exponent$

91 Views

34.

Write the following number in standard form.

0.000000564

391 Views

35.

Write the following number in standard form.

0.0000021

448 Views

36.

Write the following numbers in standard form.

21600000

335 Views

37.

Write the following number in standard form.

15240000

249 Views

38.

Write all the facts given in the standard form.

352 Views

39.

Compare the size of a red blood cell which is 0.000007 m to that of a plant cell which is 0.0000129 m.

165 Views

40.
Express the following numbers in standard form.

0.0000000000085

0.0000000000085 = $85 over 10000000000000$

 = $space 85 over 10 to the power of 13$

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 = $space space 8.5 space cross times space 10 space cross times space 10 to the power of negative 13 end exponent$

 = $8.5 space cross times space 10 to the power of negative 12 end exponent$