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3 years ago

How to complete this

Mathematics

1 answer:

KATRIN_1 [288]3 years ago

8 0

Answer:

4 $x^{6}$ $y^{7}$

Step-by-step explanation:

Using the rule of exponents

$a^{m}$ × $a^{n}$ = $a^{(m+n)}$

12 $x^{5}$ × $y^{3}$ × $\frac{1}{2}$ x x $\frac{2}{3}$ $y^{4}$

= 12 × $\frac{1}{2}$ × $\frac{2}{3}$ × $x^{(5+1)}$ × $y^{(3+4)}$

= 4 $x^{6}$ $y^{7}$

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Answer: The blue whale's weight is 150 times heavier than the narwhal's weight.

Step-by-step explanation:

Given: Weight of Blue whale = $3\times10^5\text{ pounds}$

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Number of times blue whale's weight is heavier than the narwhal's weight = $=\dfrac{\text{Weight of Blue whale}}{\text{Weight of Narwhal }}$

$=\dfrac{3\times10^5}{2\times10^3}\\\\=1.5\times10^{5-3}\ \ \ [\dfrac{a^m}{a^n}=a^{m-n}]\\\\=1.5\times10^2\\\\=1.5\times100=150$

Hence, the blue whale's weight is 150 times heavier than the narwhal's weight.

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2 years ago

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Answer:

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Step-by-step explanation:

11x2=22

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3 years ago

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Step-by-step explanation:

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