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vesna_86 [32]
3 years ago
8

Need with these thank you if you help

Mathematics
1 answer:
Aleks [24]3 years ago
3 0
A. p^4/p^7 = p^-3 = 1/p^3
b. 4^3/4^3 = 1
c. 11^2/11^4 = 11^-2 = 1/11^2
d. 6^4/6 = 6^3
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What is the answer to (5x3)-18​
Fittoniya [83]

Answer:

-3

Step-by-step explanation:

5*3=15

15-18= -3

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malfutka [58]

Answer:

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Step-by-step explanation:

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Vsevolod [243]
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Kobotan [32]

Answer:

x=2 , y=1

Step-by-step explanation:

Since the second equation is fully simplified and we know what x equals, we plug the entire equation of x in for x in the top equation:

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Now plug y back into the bottom equation and solve for x.

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2 years ago
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Bas_tet [7]

\\ \sf\dashrightarrow \dfrac{x+20}{2}=3x

\\ \sf\dashrightarrow x+20=2(3x)

\\ \sf\dashrightarrow x+20=6x

\\ \sf\dashrightarrow 20=6x-x

\\ \sf\dashrightarrow 5x=20

\\ \sf\dashrightarrow x=\dfrac{20}{5}

\\ \sf\dashrightarrow x=4

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3 years ago
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