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
iris [78.8K]
3 years ago
13

the length of a rectangle is 3 more than the width. if the area is 40 square inches what is the dimension of the width

Mathematics
1 answer:
inna [77]3 years ago
8 0

Answer:

width=5inches

Step-by-step explanation:

Let the width =x

Then the length=x+3

Area of a rectangle=L×W, where Area=40inch²

Therefore we substitute the values of the dimensions into the formula

40=(x+3)(x)

40=x²+3x(grouping the terms together)

x²+3x-40=0(factorise the quadratic)

(x+8)(x-5)=0(find the zeros)

x+8=0,x=-8

x-5=0,x=5

Since the dimension, whether length or width cannot be negative,then x is 5inches hence width is 5 and length is 5+3=8inches

You might be interested in
Would appreciate help on this please and thanks
bonufazy [111]
Since it is an isosceles trapezoid;
AB=CD which means;
5y-3=6y-17
get the variables to one side and you get:
-3=y-17
Then add 17 to both sides and
14=y
Therefore y=14 is your answer
8 0
3 years ago
R/3+2=21 solve for r
olchik [2.2K]

Answer:

r=63

Step-by-step explanation:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    r/3-(21)=0             r

Simplify   —

           3

r    

 — -  21  = 0

 3     2.1   Subtracting a whole from a fraction

Rewrite the whole as a fraction using  3  as the denominator :

         21     21 • 3

   21 =  ——  =  ——————

         1        3  

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

7 0
3 years ago
Solutions to 39=4-7v
pishuonlain [190]
V = -5 because you subtract 4 from both sides then divide both sides by -7 and you get -5
4 0
3 years ago
Read 2 more answers
Charlie runs ata speed of 3 yards per second. about how many miles per hour does charlie run?
DochEvi [55]

(3 yard/sec) x (3,600 sec/hr) x (1 mile / 1,760 yard) =

   (3 x 3,600 / 1,760)  (mile/hour)  =  6.136... mph (rounded)

8 0
4 years ago
Graph the inequality.<br> 1
Mrrafil [7]

Answer:

hope it helps

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • The population of a small town is increasing by 52 people per month. If the current population is 5693 people, how many months a
    12·1 answer
  • A-B=56 A:B is equivalent to 9:2
    12·1 answer
  • Help please ASAP ASAP
    5·2 answers
  • PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA POINTS*.. <br> IM GIVING 40 POINTS !! DONT SKIP :((.
    5·2 answers
  • Laura was late to class 5 times in September. Each time she was late she missed 48 minutes of
    7·1 answer
  • Please help asap!!! It’s late!
    13·2 answers
  • If 8 more than twice a number is equal to 20, what is 6times the number ?
    14·1 answer
  • Gabrielle is traveling to Mexico and needs to exchange $440 into Mexican pesos. If each dollar is worth 11.84 pesos, how many pe
    9·1 answer
  • Help me please I am still confused
    10·1 answer
  • Simplify 5x^2+43x-18=0
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!