3 years ago

13 is one third of a number m

Mathematics

1 answer:

Viefleur [7K]3 years ago

3 0

13 times 3=39
M=39
13 is 1/3 of 39

You might be interested in

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

What can you do when the unit prices for two comparable items are listed using different units of measure?

Over [174]

When you have two unit prices for two comparable items, you have to convert one of the prices to the other one.

3 0

4 years ago

Read 2 more answers

Grace is at a bookstore with $75 to spend. She has plans to buy a reference book that cost $18 and some novels that cost $12 how

elixir [45]

Answer:

Step-by-step explanation:

12x+18=75

-18=-18

12x= 57

Divide by 12.

57/12=4.75

Grace can buy 5 books including the reference book

7 0

3 years ago

Freddie made the number line below to model the laps he walks around a track at his

Elena-2011 [213]

Answer:

On a standard running 400-meter track a mile is 4 laps… plus 9 more meters if you want to get all technical about it. A mile is specifically 1,609.3 meters.

Step-by-step explanation:

6 0

3 years ago

The SAT offers ____ subject tests in five areas. A.20 B.10 C.15 D.5

kirill [66]

A.20 is the right answer

3 0

4 years ago

Read 2 more answers