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
LUCKY_DIMON [66]
3 years ago
14

Una piscina rectangular de 15 metros de largo por 9 metros de ancho està rodeada por un

Mathematics
1 answer:
stira [4]3 years ago
8 0

Answer: 2 meters.

Step-by-step explanation:

Let w = width of the cement path.

Dimensions of pool : Length = 15 meters , width = 9 meters

Area of pool = length x width = 15 x 9 = 135 square meters

Along width cement path, the length of region = 2w+15

width = 2w+9

Area of road with pool =  (2w+15) (2w+9)

= 4w^2+30w+18w+135\\\\=4w^2+48w+135

Area of road = (Area of road with pool ) -(area of pool)

\Rightarrow\ 112 =4w^2+48w+135- 135\\\\\Rightarrow\ 112= 4w^2+48w\\\\\Rightarrow\ 4 w^2+48w-112=0\\\\\Rightarrow\ w^2+12w-28=0\ \ \ [\text{Divide both sides by 4}]\\\\\Rightarrow\ w^2+14w-2w-28=0\\\\\Rightarrow\ w(w+14)-2(w+14)=0\\\\\Rightarrow\ (w+14)(w-2)=0\\\\\Rightarrow\  w=-14\ or \ w=2

width cannot be negative, so w=2 meters

Hence, the width of the road = 2 meters.

You might be interested in
52÷2= ?? find the quotient and remainder
vodomira [7]
52/2= 26

The quotient is 26, but there are no remainder.

Hope this helps!
7 0
3 years ago
Read 2 more answers
Kevin buys 4 folding chairs. Each chair costs $13.50. The sales tax is 6.5%. What is the amount of sales tax for Kevin's purchas
Lorico [155]
I think its $3.51........................

5 0
3 years ago
Plz someone help me on this question I rlly need help​
Sauron [17]

Step-by-step explanation:

you simply have to mark the points in which the x and y coordinates are given take for example "1,4" it took him 4 minutes to read 1 page right? the one is marked as X and the 4 is marked as Y so put a point in which the 1 at X and the 4 at Y meet in the coordinates system. Do so with every coordinates and then draw a line in the direction of all the points

8 0
3 years ago
Read 2 more answers
Can you help me on this one
Annette [7]

Answer: B. Line AC is congruent to line BD

Step-by-step explanation:

The Hypotenuse-Leg Theorem states that two right triangles are congruent if and only if the hypotenuse and a leg of one right triangle are congruent to the hypotenuse and a leg of the other right triangle.

Since they both share Leg DC, their hypotenuse should be congruent to use this proof.

3 0
3 years ago
Which of the following determines a plane?
Gnoma [55]

Answer: A 3 non collinear pts

a plane is a flat surface like a wall

5 0
2 years ago
Other questions:
  • Maximizing profit: Suppose you own a tour bus and you book groups of 20 to 70 people for a day tour. The cost per person is $30
    6·1 answer
  • Evaluate the following relation.
    13·1 answer
  • If y= 3x, then what is x?
    15·1 answer
  • Plz help I need help now
    7·1 answer
  • What two integers does 226 lie between?
    9·1 answer
  • A can in the shape of a cylinder has a diameter of 6 centimeters and a height of 10 centimeters witch measurement is closest to
    7·1 answer
  • The ratio of potatoes to turnips is 1:1 if there are 473 potatoes how many turnips are there
    11·2 answers
  • Equation of the line that passes through (7,-1) and (-3,-1)
    10·1 answer
  • Justin and Eric came home from school on Friday and found a freshly baked cherry pie. Justin ate 2/3 of a pie and Eric ate 1/4 o
    10·1 answer
  • I tried this and found it really difficult please help
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!