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-Dominant- [34]
3 years ago
15

Akeem and Jack are discussing their friend's new swimming pool. It is rectangular in shape. Akeem says he knows that it has a pe

rimeter of 90 feet. Jack says he knows that it has a width of 5 yards. What is the length of the swimming pool in yards?
Mathematics
1 answer:
schepotkina [342]3 years ago
4 0

Answer:

The length of swimming pool is 10 yards.

Step-by-step explanation:

Given,

Perimeter= 90 feet

Width= 5 yards

As we have to find the length in yards, therefore, we will convert perimeter in yards also.

As we know,

1 Yard = 3 feet

Therefore,

Dividing the perimeter by 3 to convert it into yards.

90\ feet = \frac{90}{3} \ yards\\90\ feet=30\ yards

The formula of perimeter of rectangle is;

P= 2(l+w)

Putting values of perimeter and width;

30=2(l+5)\\30=2l+10\\2l=30-10\\2l=20\\l=\frac{20}{2} \\l=10

The length of swimming pool is 10 yards.

Keywords: Perimeter, linear equation

Learn more about linear equations at:

  • brainly.com/question/6500232
  • brainly.com/question/6554402

#LearnwithBrainly

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2 years ago
3x+4(x-8)-14 evaluate for x=11
djverab [1.8K]

Answer:

For X = 11, the expression is equal to 31

Step-by-step explanation:

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For X = 11 you only have to replaced the value into the expression, so:

3(11) + 4(11-8) - 14

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3 years ago
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3 years ago
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Which functions have an axis of symmetry of x = -2? Check all that apply. A. f(x) = x^2 + 4x + 3 B. f(x) = x^2 - 4x - 5 C. f(x)
Snowcat [4.5K]

Answer:

A. f(x) = x^2 + 4x + 3

D. f(x) = -2x^2 - 8x + 1

Step-by-step explanation:

The axis of symmetry is found by h = -b/2a  where ax^2 +bx +c

A. f(x) = x^2 + 4x + 3

  h = -4/2*1 = -2    x=-2

B. f(x) = x^2 - 4x - 5

h = - -4/2*1 = 4/2 =2  x=2  not -2

C. f(x) = x^2 + 6x + 2

h =  -6/2*1 = -3/2 =  x=-3/2  not -2

D. f(x) = -2x^2 - 8x + 1

h = - -8/2*-2 = 8/-4 =-2  x=-2  

E. f(x) = -2x^2 + 8x - 2

h = - 8/2*-2 = -8/-4 =2  x=2  not -2

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3 years ago
I need help first person to answer right gets brainly
Dahasolnce [82]

Answer:

see explanation

Step-by-step explanation:

A cube has 6 congruent square faces

The area of 1 face = \frac{2}{3} × \frac{2}{3} = \frac{4}{9}

Multiply by 6 to obtain surface area of cube

surface area = 6 × \frac{4}{9} = \frac{24}{9} = \frac{8}{3} units²

6 0
3 years ago
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