3 years ago

Translate “4 less than five times a number is –11” into a mathematical equation.

Mathematics

1 answer:

hram777 [196]3 years ago

8 0

4 less than five times a number is -11:
5x - 4 = -11

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An item is regularly priced at $50. It is on sale for 40% off the regular price. What is the sale price?

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Answer:

30 dollars

Step-by-step explanation:

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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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2 years ago

What is 3356983+10000004565

Leto [7]

The answer is: 1003361548

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3 years ago

1. Solve log x=4

Helen [10]

1. A. 10,000

Explanation: 10^4 = 10,000

2. x = -12

Explanation: see photo

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