3 years ago

The lines below are parallel if the slope of the greenline is -2what is the slope of the redline

Mathematics

1 answer:

Lera25 [3.4K]3 years ago

3 0

I cant see the lines but if they are parallel they must have the same slopes

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4a/3-b/4=6<br> 5a/6+b=13<br> Solve linear system by elimination

kondor19780726 [428]

$\bf \cfrac{4a}{3}-\cfrac{b}{4}=6
\qquad \qquad 
\cfrac{5a}{6}+b=13
\\\\\\
\textit{let us remove the denominators off those folks}\\
\textit{by multiplying the first one by 12, both sides}\\
\textit{and the second one by 6, both sides, thus}
\\\\\\
12\left( \cfrac{4a}{3}-\cfrac{b}{4} \right)=12(6)\implies 16a-4b=72
\\\\\\
6\left( \cfrac{5a}{6}+b \right)=6(13)\implies 5a+6b=78$

$\bf \textit{now, let's do the elimination}
\\\\

\begin{array}{llll}
16a-4b=72&\boxed{\times 3}\implies &48a-\underline{12b}=216\\\\
5a+6b=78&\boxed{\times 2}\implies &10a+\underline{12b}=156\\
&&--------\\
&&58a+0\quad=372
\end{array}$

solve for "a", once you get "a", plug it back into either equation to get "b"

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3 years ago

Angle ABC is shown . Determine sin B. Write your answer in fraction form.<br><br> Help ASAP

Mkey [24]

Answer:

sin b would be 4/5

Step-by-step explanation:

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3 years ago

2. About how much is 123.1 do you weigh in pounds? Estimate if you don't know☺ Find an online converter and find out how many ki

Mama L [17]

Answer:

123.1 pounds is vary long, and I don't want to repeat, so 55.8372207 repeat.

Step-by-step explanation:

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podryga [215]

Answer:

C: Divide both sides by 3

F: Division property of equality

Step-by-step explanation:

$3x=12\\x=\frac{12}{3}\\x=4$

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3 years ago

Solve this by Substituton

lana66690 [7]

There is no solution for this equation

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3 years ago