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Sveta_85 [38]
2 years ago
5

Which ordered pairs make the equation true? 3x+2y=−7 Select each correct answer. (3, −8)

Mathematics
1 answer:
Nikolay [14]2 years ago
5 0
<h2>SOLVING</h2>

\Large\maltese\underline{\textsf{A. What is Asked}}

Which ordered pairs make the equation \bf{3x+2y=-7} true? Select all that apply. 3 options are given

\Large\maltese\underline{\textsf{B. This problem has been solved!}}

We can tell which ordered pairs make equations true by plugging in the coordinates.

\mathbb{ORDERED\;PAIR\;NUMBER\;ONE}

\bf{3(3)+2(-8)=-7} | simplify

\bf{9-16=-7} |simplify

\bf{-7\equiv-7} | this one checks

\mathbb{ORDERED\;PAIR\;NUMBER\;TWO}

\bf{3(-2)+2(-1)=-7} | simplify

\bf{-6-2=-7} | simplify

\bf{-8\neq-7} | this one does <em>not </em>check

\mathbb{ORDERED\;PAIR\;NUMBER\;THREE}

\bf{3(1)+2(-4)=-7} | simplify

\bf{3-8=-7} | simplify

\bf{-5\ne-7} | this one does <em>not</em> check

\rule{300}{1.7}

\bf{Result:}

              \bf{=The\;First\;Option

\boxed{\bf{aesthetic \not101}}

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4 0
3 years ago
Read 2 more answers
Someone please help, it will be so appreciated!
FrozenT [24]

Hello,

Question:

Keisha solved the following equation:

4x − 2x + 8 = 6(x + 4)

Which step has an incorrect justification? (Make sure to type only the number of the step into the blank: 1, 2, 3, 4 or 5)

Correct Solution:

x − 2x + 8 = 6(x + 4)

4x + −2x + 8 = (6) (x) + (6) (4) (Distribute)

4x + −2x + 8 = 6x + 24

(4x + −2x) + (8) = 6x + 24 (Combine Like Terms)

2x + 8 = 6x + 24

2x + 8 = 6x + 24

Subtract 6x from both sides.

2x + 8 − 6x = 6x + 24 − 6x

−4x + 8 = 24

Subtract 8 from both sides.

−4x + 8 − 8 = 24 − 8

−4x = 16

-4 x -4 = 16

x = -4

Answer:

Where keisha went wrong was forgeting to subtract 6x to both sides.

Incorrrect step is #3


7 0
3 years ago
Read 2 more answers
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