3 years ago

Help with rational equations

1 answer:

7 0

Change all the terms so that they have a common denominator

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padilas [110]

First of all, you should know/notice that

$125=5^3$

You should also know how negative exponents work:

$a^{-m}=\dfrac{1}{a^m}$

So, if you wanted

$5^x=125$

the answer would be x=3, but since you want 125 to be at the denominator, the answer is x=-3:

$5^{-3}=\dfrac{1}{5^3}=\dfrac{1}{125}$

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3 years ago

matrenka [14]

Answer:

$z = 62 \\ 6x + 52 = 180 - 62 \\ 6x = 66 \\ x = 11$

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3 years ago

nydimaria [60]

Answer:

17. is 20 18. is 9hours 19. is 60mph

you get this by doing 100 divided by 5 which equals 20 360 divided by 40=9 and 420 divided by 7 =60

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3 years ago

enyata [817]

Answer:

Step-by-step explanation:

The direction of the greater than/equal to signs dictates which direction the graph is shaded.

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3 years ago

alukav5142 [94]

Answer:

Step-by-step explanation:

58950

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2 years ago