I really do not get this at all and need help please

Mathematics

2 answers:

sweet [91]3 years ago

4 0

I would say C hope you get it correct

klasskru [66]3 years ago

3 0

I would say C. Hopefully you get it correct.

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Need help !!!!!!!!!!! !!!!!!

luda_lava [24]

Answer: B

Step-by-step explanation:

6 0

2 years ago

4a/3-b/4=6 5a/6+b=13 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"

3 0

3 years ago

Division of fraction 3/5 divided by 10/11

Tema [17]

3/5 ÷ 10/11
multiply by the inverse

3/5 x 11/10 = 33/50

3 0

3 years ago

Read 2 more answers

Clarence has already taken 15 pages of notes on his own, and he will take 5 pages during each hour of class. In all, how many ho

horrorfan [7]

Answer:

60-15/2=9