Ask question

Ask question

All categories

3 years ago

5

The width of a rectangle is the length minus 4 units. The area of the rectangle is 21 units. What is the width, in units, of the

rectangle?

1 answer:

beks73 [17]3 years ago

7 0

Answer:

Step-by-step explanation:

$W=L-4\\ \\ L=W+4\\ \\ A=LW\\ \\ A=(W+4)W\\ \\ A=W^2+4W\\ \\ A=21\\ \\ W^2+4W=21\\ \\ W^2+4W-21=0\\ \\ (W+7)(W-3)=0\\ \\ W>0\\ \\ W=3u$

You might be interested in

What does the word hypersensitive mean in the sentence below

Sonbull [250]

Answer:

abnormally or excessively sensitive, either psychologically or in physical response. / Extremely sensitive

Step-by-step explanation: Definition of hypersensitive: abnormally or excessively sensitive, either psychologically or in physical response.

4 0

3 years ago

A room in the lower level of a cruise ship has a circular window with a diameter of 30 inches. Find the total area of the window

jeka57 [31]

A≈2827.43 i’m pretty sure

5 0

3 years ago

If A is an obtuse angle and cos A = 3/5, find the values of tan A

slega [8]

Answer:

the value has to be 54.6 and up

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

What is the slope of the line through (-3, 3) and (-1,-1)?

stira [4]

It’d be B, -2

You move right one space and then down two spaces

5 0

2 years ago

What is the slope to this equation y= 2/3 x +5

Rzqust [24]

Answer:

In an equation of the form y = mx + b the slope is represented by "m".

Therefore, the slope of y= 2/3 x +5 is (2/3)

Step-by-step explanation:

4 0

3 years ago