Ask question

Ask question

All categories

MariettaO [177]

3 years ago

13

The perimeter of a rectangle is 48. the length of the rectangle is four less than three times the width. What is the length of t

he rectangle ?

1 answer:

UkoKoshka [18]3 years ago

6 0

The length of rectangle is: 17

Further explanation:

Given

Perimeter = 48

Let L be the length

Let W be the width

Then

$2L+2W=48\\AND\\L=3W-4$

Putting the value of L in perimeter

$2(3W-4)+2W=48\\6W-8+2W=48\\8W-8=48\\8W=48+8\\8W=45\\\frac{8W}{8}=\frac{56}{8}\\W=7$

Putting W=7 in second equation

$L=3(7)-4\\L=21-4\\L=17$

Hence,

The length of rectangle is: 17

Keywords: Perimeter of rectangle, Linear equations

Learn more about perimeter of rectangle at:

#LearnwithBrainly

You might be interested in

Find the missing side.<br><br><br><br> a<br> 68<br> b<br> 72<br> c<br> 63.6<br> d<br> 48

babymother [125]

B

70^2 -30^2=5184
square root answer to get 72

4 0

3 years ago

Read 2 more answers

The multiplication table below can be used to find equivalent ratios.

Natasha_Volkova [10]

Answer:

K

Step-by-step explanation:

Becuse its k hgystdgshxygs

5 0

3 years ago

Read 2 more answers

In the magic square shown, the sums of the numbers in each row, column and diagonal are the same. What are the values of x, y, z

garri49 [273]

$v=23$ , $w=19$ , $x=22$ , $y=26$ , $z=20$ ;; to find the answer, set the expressions equal to each other, since the sum of the numbers should be the same.

Use $v+w+24=v+43$ and solve for $w$ , which would result in $w=19$ .

You can also use $x+z+24=z+46$ to find $x$ – or $x=22$ .

Plug in the values for $x$ and $w$ , and find $y$ using $25+22+19=y+40$ or $66=y+40$ and results in $y=26$ .

After plugging in the $y$ value, you can easily find $v$ and $z$ .

$v+18+25=66$ – since 66 is the sum of a full row, and the sums of the numbers in each row, column, and diagonal are the same, so therefore, $v+43$ should also equal 66. This results in $v=23$ , and, using the same value for the sum of $z+21+25$ , or $z+46=66$ , we find that $z=20$ .

The final answer is $v=23$ , $w=19$ , $x=22$ , $y=26$ , $z=20$ .

Sorry it took so long;; I hope this helps :)

5 0

4 years ago

Need explanation 20 points<br> The function f is such that f(x) = 2x - 6<br> Find f^-1(x)

Dvinal [7]

HEYA! <3

Explanation :

<u>GIVEN </u> :

f(x) = 2x - 6

<u>TO </u><u>FIND</u><u> </u> :

Inverse of f(x) i.e $f ^{ - 1} (x)$

<u>S</u><u>OLUTION </u> :

FOLLOW THESE THREE STEPS :

LET Y = f(x)

$\longrightarrow \tt{y = 2x - 6}$

$\longrightarrow{ \tt{ \: 2x - 6 = y}}$

MAKE X A SINGLE TERM IN LHS SIDE

$\longrightarrow{ \tt{2x = y + 6}}$

$\longrightarrow{ \tt{x = \frac{y + 6}{2} }}$

INTERCHANGE THE VALUE OF X AND Y

$\longrightarrow{ \tt{y = \frac{x + 6}{2} }}$

Hence ,

$\boxed{ \boxed{ {f}^{ - 1} (x) = \sf{ \bold{ \frac{x + 6}{2} }}}}$

Hope I helped!

Have a wonderful day / night !

Feel free to leave comments if you have any queries! :D

4 0

3 years ago

PLZZ HELP ME 20 POINTS AND BRAINLIEST!

omeli [17]

Answer:

The price of price of the stock after it has been owned for 12 weeks is $92.55

Step-by-step explanation:

Given: The price of a particular stock is represented by the linear equation

y = -0.91x + 103.47

where x represents the number of weeks the stock has been owned and y represents the price of the stock, in dollars.

We have to find the price of price of the stock after it has been owned for 12 weeks.

Since , x represents the number of weeks the stock has been owned.

Thus, by substitute, x = 12

We get the value of y , the price of stocks.

Thus, y(x) = -0.91x + 103.47

⇒ y(12) = -0.91(12) + 103.47

⇒ y(12) = -10.92 + 103.47

Solving , we get,

⇒ y(12) = 92.55

Thus, the price of price of the stock after it has been owned for 12 weeks is $92.55.

8 0

3 years ago

Read 2 more answers