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alukav5142 [94]
3 years ago
10

Anyone know how to do BOTH of these? Thanks!

Mathematics
2 answers:
cricket20 [7]3 years ago
6 0
The answer to the top one is 243.
Nataly_w [17]3 years ago
4 0

Question 1:

We have to simplify the expression \frac{(3^{3} \times 3^{4})^{2}}{3^{3} \times 9^{3}}

=\frac{(3^{3})^{2} \times (3^{4})^{2}}{3^{3} \times (3^{2})^{3}}

(Using the law of exponent, (a^{m})^{n}=a^{m \times n})

=\frac{3^{6} \times 3^{8}}{3^{3} \times 3^{6}}

Cancelling 3^{6} from the numerator and denominator.

=\frac{3^{8}}{3^{3}}

(Using the law of exponent, \frac{a^{m}}{a^{n}}=a^{m-n})

=3^{8-3}

=3^{5}

= 243

Question 2:

The average mass of an adult human = 65 kg

The average mass of an ant = 4 \times 10^{-6} kg (Since the unit of average mass of ant is not mentioned, i have assumed it as kg)

Let the number of ants be 'n'.

According to the question,

Average mass of adult human = n \times Average mass of ant

65 kg = 4 \times 10^{-6} kg \times n

n=\frac{65}{4 \times 10^{-6}}

n=16.25 \times 10^{6}

n=1625 \times 10^{4}

So, 1625 \times 10^{4} ants are needed to equal the mass of one average human.

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