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2 years ago

Rewrite using a single positive exponent..- 7^2 —— 7^-4

Mathematics

2 answers:

mariarad [96]2 years ago

4 0

7² / 7 ⁻⁴

= 7²⁻⁽⁻⁴⁾

= 7 ⁽²⁺⁴⁾

= 7⁶

= 117649

Remember :-

xᵃ / xᵇ = xᵃ⁻ᵇ

___

Hope it helps ⚜

⁽

stellarik [79]2 years ago

3 0

Answer:

7 ^2 ⋅ 7 ^4 = 49^6

Step-by-step explanation:

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Answer:

One solution

Step-by-step explanation:

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Step 1: Subtract 5x from both sides.

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15x + 15(-5x + 8) = 14

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Now that we know the value of x, we can solve for y in any of the equations, but let's use the equation "y = −5x + 8"

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$y = \dfrac{ -265 }{ 30 } +8$

$\mathrm{Simplify\: \dfrac{ -265 }{ 30 } \:,by\:dividing\:both\:-265\:and\:30\:by\:5} }$

$y = \dfrac{ -265 \div 5 }{ 30 \div 5 } +8$

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$\mathrm{Turn\:8\:into\:a\:fraction\:that\:has\:the\:same\:denominator\:as\: - \dfrac{ 53 }{ 6 }}$

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$\mathrm{Since\: - \dfrac{ 53 }{ 6 }\:have\:the\:same\:denominator\:,\:add\:them\:by\:adding\:their\:numerators}$

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$y = - \dfrac{ 5 }{ 6 }$

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So there is only one solution to the equation.

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