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
yarga [219]
3 years ago
9

A pool measures 15 feet by 17 feet. A cement walkway is added around the pool, to both the width and the length. The area of the

pool and the cement walkway is now 483 square feet. What is the width of the cement walkway?
Mathematics
1 answer:
leonid [27]3 years ago
4 0

Answer:

21 feet

Step-by-step explanation:

The pool has dimension 15 feet by 17 feet, which is in the form of a rectangle.

The area of the pool = length × width

                                   =  17 × 15

                                   = 255 square feet

Area of the pool and cement walkway = 483 square feet

Area of walkway = area of pool and walkway - Area of pool

                            = 483 - 255

                            = 228 square feet

Let's assume that the cement walkway has equal thickness across its perimeter, so that;

the dimension of the pool and the cement walkway = 23 feet × 21 feet

The width of the cement walkway is 21 feet.

You might be interested in
The variable z is directly proportional to x. When x is 10, z has the value 140.
gayaneshka [121]

Answer: z = 280

Step-by-step explanation:

If two variables are directly proportional, it means that an increase in the value of one variable causes an increase in the value of the other variable. Also, a decrease in the value of one variable causes an decrease in the value of the other variable.

The variable z is directly proportional to x. If we introduce a constant of variation, the expression would be

z = kx

When x is 10, z has the value 140. It means that

140 = 10k

k = 140/10

k = 14

The equation becomes

z = 14x

the value of z when x = 20 is

z = 14 × 20

z = 280

7 0
3 years ago
Please help <br> Whoever gets right will receive brainliest <br><br> No links or spam
777dan777 [17]

Step-by-step explanation:

Area of a circle = πr²

r = 6 mm (given)

Area = π(6)² = 36π mm².

3 0
3 years ago
Read 2 more answers
What are the zeros of the polynomial function? f(x)=x^3+x^2−9x−9
ella [17]

Answer:

1: x = -1

2: x = 3

3: x = -3

Step-by-step explanation:

f(x)=<u>x^3+x^2</u>−9x−9

f(x)=x^2<u>(</u>x+1) <u>−9x−9</u>

f(x) = x^2<u>(x+1)</u> - 9<u>(x+1)</u>

f(x)= (x+1)<u>(x^2-9)</u>

f(x) =(x+1)(x-3)(x+3)

8 0
3 years ago
Read 2 more answers
I do t know how to do it
Luba_88 [7]

We know: the sum of the angles measures in a triangle is 180°.

Therefore we have the equation:

64° + 75° + α = 180°

139° + α = 180°      <em> subtract 139° from both sides</em>

α = 41°

α and ∠2 are Supplementary Angles - they add up to 180°.

α + m∠2 = 180°

41° + m∠2 = 180°    <em>subtract 41° from both sides</em>

<h3>m∠2 = 139°</h3>

7 0
2 years ago
)Of the people in the theater, 5% have seen the movie before. If there are 8 people who have seen the movie before, how many peo
kakasveta [241]

Answer: 160

Step-by-step explanation: 5% of x = 8

In other words, x * 0.05 = 8. To find what x is, we need to work backwards.

x * 0.05 = 8

x = 8/0.05

x = 160

Would appreciate a brainly <3

3 0
2 years ago
Other questions:
  • Is 60% greater than 5/9
    5·1 answer
  • David uses 1/4 cups of apple juice for every 1/2 cup of carrot juice to make a fruit drink. Enter the number of cups of apple ju
    11·1 answer
  • I need help with this
    9·1 answer
  • Identify the number that does not belong ...
    6·1 answer
  • If ABCD is a parallelogram, BC =3m + 10, and AD = 7m – 2, find the value of ‘m’. *
    7·1 answer
  • Mia buys 3 feet of string to make keychains. She needs 6 inches of string to make one keychain. How many keychains can Mia make
    7·2 answers
  • Why is measuring a circle different for measuring a polygon
    8·2 answers
  • Pls help i have been getting bad answers all day im about to fail 7th grade :( Pls I WILL GIVE BRAINLIEST ANYTHING :(
    6·1 answer
  • 11/5 =<br> Help me please
    7·1 answer
  • Rationalize the denominator.<br> - 11x^3/<br> Root7x+1
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!