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GrogVix [38]
3 years ago
5

Explain how to verify that 3(2x + 5) = 9 + 3x and x = –2 are equivalent equations.

Mathematics
1 answer:
aniked [119]3 years ago
6 0

3 times (2x + 5) is 6x + 15.

6x + 15 = 9 + 3x.

Group by like terms. 6 = -3x

Divide to get x by itself. 6/-3 = -2

Thus -2 = x

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Answer:

It would change to 0.04802

Step-by-step explanation:

from this question we have that n became 400

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1 - p* =

= 1 - 0.4

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at confidence level,

1 - 0.95

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<u>margin of error. E</u>

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6 0
3 years ago
Hey if you could help me with this it'd mean a lot I can't figure it out
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Answer:

L = 12  S = 5

Step-by-step explanation:

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------------------

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S = 17-12

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6 0
3 years ago
Ingrid dug a trench 18/20 of a meter long. The next day she dug 9/20 of a meter more of the trench. What is a reasonable estimat
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One number is nine more than another number, if the sum of the number is 65, find both numbers
balandron [24]

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Step-by-step explanation:

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Answer:  1/3

<u>Step-by-step explanation:</u>

When adding or subtracting fractions, they must have the same denominator.

\dfrac{5}{9}-\boxed{\dfrac{?}{?}}=\dfrac{12}{54}\\\\\\\dfrac{5}{9}\bigg(\dfrac{6}{6}\bigg)-\boxed{\dfrac{?}{?}}=\dfrac{12}{54}\\\\\\\dfrac{30}{54}-\boxed{\dfrac{?}{?}}=\dfrac{12}{54}\\\\\\\dfrac{30}{54}-\boxed{\dfrac{18}{54}}=\dfrac{12}{54}\\\\\\\text{Simplify}\quad \dfrac{18}{54}\div \dfrac{18}{18}\quad =\large\boxed{\dfrac{1}{3}}

6 0
3 years ago
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