What is the value of the expression?

7^-3x7^9/7^-8

A.
714

B.
72

C.
7−14

D.
7−2

Question

16-08-2016
Mathematics

contestada

What is the value of the expression?

7^-3x7^9/7^-8

A.
714

B.
72

C.
7−14

D.
7−2

Respuesta :

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dalendrk dalendrk · Answer 1 · 2016-08-16T21:33:20+02:00

dalendrk dalendrk

16-08-2016

[tex]Use:\\a^n\cdot a^m=a^{n+m}\ and\ a^n:a^m=a^{n-m}\\\\7^{-3}\cdot\dfrac{7^9}{7^{-8}}=7^{-3}\cdot7^{9-(-8)}=7^{-3+9+8}=7^{14}\\\\Answer:\boxed{A.\ 7^{14}}[/tex]

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What is the value of the expression? 7^-3x7^9/7^-8 A. 714 B. 72 C. 7−14 D. 7−2

Respuesta :

Otras preguntas

What is the value of the expression?

7^-3x7^9/7^-8

A.
714

B.
72

C.
7−14

D.
7−2