Arectangular swimming pool is represented by x as the width and one less than twice the width as the length. if the area of the swimming pool is given by 28 sq. ft., which equation could be used to model the area of swimming pool?

a) 28 = 2x-1•x

b) 28x = 2x -1

c) 28 = (2x-1) + (x)

d) 28 = (2x - 1) (x)

Option D.

Step-by-step explanation:

Let

x ----> the width of the rectangular swimming pool in feet

y ----> the length of the rectangular swimming pool in feet

we know that

the area of the  rectangular swimming pool is equal to

we have

so

-----> equation A

---> equation B

substitute equation B in equation A

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

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