1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alex_Xolod [135]
3 years ago
13

The area of a rectangle is 252 cm², and the length is 3 less than 2 times the width. Find the dimensions of the rectangle.

Mathematics
1 answer:
SSSSS [86.1K]3 years ago
3 0

Answer:

21cm, 12cm

Step-by-step explanation:

width=x cm

length=2x-3 cm

area= 252cm²

l*b= 252 cm²

(2x-3)(x)=252

2x²-3x= 252

this is how I did it

we need to find the nearest square of the number (it should be lesser than the area)

that is 225, whose square root is 15.

since there is a coefficient to the x², the value of x would be calculate like this 15- (2+1)= 15-3 = 12

x= 12

we can verify it too,

2*(12)² - 3*12=252

288-36=252

252=252

therefore width is 12 cm and width is 2*12-3= 24-3= 21 cm

verify;

21*12= 252

252=252

hence the dimensions are 12 am (width) and 21 cm(length).

You might be interested in
How many yards in 27 feet
xxTIMURxx [149]
There are 3 feet in a yard so divide 27 by 3 to get 9 yards
4 0
4 years ago
Read 2 more answers
Solve. -X - 11- 2x+4 help pls​
cestrela7 [59]

Answer:

i got -2x - x - 7

Step-by-step explanation:

if im wrong sorry

6 0
3 years ago
Loretta’s income last year was $81,300. She made $56,800 at her salaried job and had additional passive income. If Loretta earne
aalyn [17]

Answer:

Option a.  $2,040

Step-by-step explanation:

step 1

To find out the amount of the additional passive income last year, subtract the amount earned at her salaried job from Loretta’s income last year

so

\$81,300-\$56,800=\$24,500

step 2

Divide the additional passive income last year by 12 (number of months in a year)

\$24,500/12=\$2,041.67

therefore

approximately $2,400 per month

5 0
3 years ago
Read 2 more answers
Slope=2/3, y-intercept=-5<br>please helphelp ​
Shtirlitz [24]
What do u need help w
its y=2/3x - 5
3 0
3 years ago
F(x) = x+3 help<br> Please
schepotkina [342]

Answer:

x=-3

Step-by-step explanation:

F(x) just means X.

0=x+3

0-3=x+3-3

-3=x

3 0
3 years ago
Read 2 more answers
Other questions:
  • What is an absolute value inequality that has 3 and -5 as solutions?
    12·2 answers
  • If Q is the midpoint of pr, find the coordinates of r if p(11,-2) and q(4,3) look
    14·1 answer
  • If the spinner shown is spun twice, what is the probability that it will land on 1 both times?
    14·2 answers
  • Advance tickets for a school play went on sale. The price of each student ticket was $4 and everyone else paid $5. On the first
    8·2 answers
  • Please help me it’s due at 3:00pm please will mark the brainiest please help me
    8·2 answers
  • Find y' if y= In (x2 +6)^3/2<br> y'=
    12·1 answer
  • PLZ HELP WILL GIVE BRAINLIST IF CORRECT: Mamadou answered 77 questions correctly on his multiple choice math final that had a to
    15·2 answers
  • • Check your work when you're done.
    14·1 answer
  • Matteo is working two jobs, making $15 per hour at the movie theater and $18 per hour washing cars. Last week Matteo worked a to
    8·1 answer
  • I NEED HELP ASAP!!!!<br><br> This is the equation: <br><br> 7(h−3)+4h<br><br> Please help!
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!