mjchey
Answered

Westonci.ca is the best place to get answers to your questions, provided by a community of experienced and knowledgeable experts. Get accurate and detailed answers to your questions from a dedicated community of experts on our Q&A platform. Get precise and detailed answers to your questions from a knowledgeable community of experts on our Q&A platform.

#1 What is the value of the expression 7–3? Answers: A. –21 B. - 1/343 C.1/343 D. 343 

#2What is the value of the expression 1/5^-5? Answers: A. 1/3125 B.1/25 C.25 D. 3125

 #3What is the value of the expression 2/4^-3?Answers: A. 1/32 B. 1/6 C.128 D.256  

#4  What value of k solves the equation? K^-2=1/64 Answers: A.1/8 B. 8 C. 32 D. 128

 #5 What value of n solves the equation? 4^N= 1/64   Answers: A. –3   B. 3   C. 16   D. 256



Sagot :

kate200468
[tex]\#1\ \ \ 7^{-3}= \frac{1}{7^3} = \frac{1}{343}\ \ \ \Rightarrow\ \ \ Ans.\ C\\ \\ \#2\ \ \ \frac{1}{5^{-5}}=5^5=3125\ \ \ \Rightarrow\ \ \ \ Ans.\ D\\ \\ \#3\ \ \ \frac{2}{4^{-3}}=2\cdot4^{3}=2\cdot 64=128\ \ \ \Rightarrow\ \ \ Ans.\ C\\ \\\#4\ \ \ K^{-2}= \frac{1}{64} \ \ \Rightarrow\ \ \ \frac{1}{K^2} = \frac{1}{64}\\\\ .\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ K^2=64 \ \ \Rightarrow\ \ K=8\ \ \Rightarrow\ \ Ans.\ B\\ \\ [/tex]

[tex]\#5\ \ \ 4^N= \frac{1}{64}\ \ \Rightarrow\ \ \ 4^N=4^{-3}\ \ \ \Rightarrow\ \ \ N=-3\ \ \ \Rightarrow\ \ \ Ans.\ A[/tex]
Riia

First question

The given expression is

[tex]7^{-3}[/tex]

Which can also be written as

[tex]\frac{1}{7^3}= \frac{1}{343}[/tex]

Therefore the correct option is C.

2.

The given expression is

[tex]\frac{1}{5^{-5}}[/tex]

Which can also be written as

[tex]5^5 = 3125[/tex]

So the correct option is D

3.

The given expression is

[tex]\frac{2}{4^{-3}}[/tex]

Which can also be written as

[tex]2*4^3 = 2* 64=128[/tex]

And the correct option is C

4.

The given equation is

[tex]k^{-2} = \frac{1}{64} \\ k^2 = 64 \\ k^2 = 8^2 \\ k=8[/tex]

So the correct option is B

5.

The given equation is

[tex]4^N = \frac{1}{64} \\ 4^N = 4^{-3} \\ N =-3[/tex]

And the correct option is A .

Thank you for visiting. Our goal is to provide the most accurate answers for all your informational needs. Come back soon. We appreciate your time. Please come back anytime for the latest information and answers to your questions. We're glad you visited Westonci.ca. Return anytime for updated answers from our knowledgeable team.