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ikadub [295]
1 year ago
11

Andre was trying to write 7^4/7^-3 with a single exponent and write 7^4/7^-3= 7^4-3=7^1 Exploit to Andre what his mistake was an

d what the answer should be...PLEASE THE ANSWER IS URGENT!!
Mathematics
1 answer:
Readme [11.4K]1 year ago
3 0
\frac{7^4}{7^{-3}}=7^7

Here, we want to get what Andre's mistake was and correct it

To answer this, we are supposed to use the division law of indices

We have this as;

\frac{a^x}{a^y\text{ }}=a^{x-y}

Now, in the case of this question, x is 4 and y is -3

So, we have the expression as;

7^{4-(-3)}=7^{4+3}=7^7

His mistake is thus adding the exponents instead of subtracting

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Use the given qualitative data to construct the relative frequency distribution.
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Answer:

Category                         Relative Frequency

male survivors                           17.3%

males who died                          63.7 %

Female survivors                        15.1 %

Females who died                       3.8%

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Number of male ​survivors = 394

⇒ Relative Frequency of male ​survivors =\dfrac{394}{2274}

In percent , \dfrac{394}{2274}\times100\approx17.3\%

Number of males who​ died =1449

⇒ Relative Frequency of male ​who​ died =\dfrac{1449}{2274}

In percent , \dfrac{1449}{2274}\times100\approx63.7\%

Number of female​ survivors =344

⇒ Relative Frequency of female​ survivors =\dfrac{344}{2274}

In percent , \dfrac{344}{2274}\times100\approx15.1\%

Number of females who died = 87

⇒ Relative Frequency of females who died =\dfrac{87}{2274}

In percent , \dfrac{87}{2274}\times100\approx3.8\%

Hence, the complete table would be :

Category                         Relative Frequency

male survivors                           17.3%

males who died                          63.7 %

Female survivors                        15.1 %

Females who died                       3.8%

8 0
3 years ago
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