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nuccioreggie
 one year ago
Which expression is equivalent to 73 ⋅ 7−5?
72
77
1 over 7 to the 2nd power
1 over 7 to the 7th power
nuccioreggie
 one year ago
Which expression is equivalent to 73 ⋅ 7−5? 72 77 1 over 7 to the 2nd power 1 over 7 to the 7th power

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tkhunny
 one year ago
Best ResponseYou've already chosen the best response.0Show your work. Don't forget your Order of Operations.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So \[\large7^3*\large7^{5}\]?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Hello? @nuccioreggie

nuccioreggie
 one year ago
Best ResponseYou've already chosen the best response.1Yea thats the question

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[\Large7^3*\Large7^{5}=\Large7^{35}\]

nuccioreggie
 one year ago
Best ResponseYou've already chosen the best response.1I think the answer is B

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0And why do you think that?

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0To multiply powers with the same base, give the same base and add the exponents. Examples: \(\large 5^8 \cdot 5^7 = 5^{8 + 7} = 5^{15} \) \(\large 3^{5} \cdot 3^4 = 3^{5 + 4} = 3^{1} \)

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0Also, after you multiply the powers together using the rule above, you need to know what to do with a negative exponent. For that use this rule: \(\large a^{n} = \dfrac{1}{a^n} \) Example: \(\large 5^{3} = \dfrac{1}{5^3} = \dfrac{1}{125} \)

nuccioreggie
 one year ago
Best ResponseYou've already chosen the best response.1Ok i just did that and i got the answer choice

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0First, multiply the powers together. The base is 7. What do you get for the exponent?

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0What is 3 + (5) = ?

nuccioreggie
 one year ago
Best ResponseYou've already chosen the best response.1Sorry if i typee the same thing twice its not moe its my computer

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0Good. So far you are correct. dw:1433878869336:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0Now you need to deal with the negative exponent. See my example above. A negative exponent ends up as a fraction.

nuccioreggie
 one year ago
Best ResponseYou've already chosen the best response.1Ohhhhh ok so its C

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.0Correct! dw:1433878981234:dw

nuccioreggie
 one year ago
Best ResponseYou've already chosen the best response.1Ok thanks can you help me with 2 more only please

tkhunny
 one year ago
Best ResponseYou've already chosen the best response.0And let's work on that notation. 73 ⋅ 7−5 = 73*7  5 = 511  5 = 506 Find SOME way to indicate an exponent. 7^3 * 7^(5) Perhaps.
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