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Ilya [14]
3 years ago
12

Simplify n-3÷n^2+2n-15

Mathematics
1 answer:
Luda [366]3 years ago
5 0
N= 7.459929 is your answer 
You might be interested in
56 points for whoever answers correctly !
vladimir2022 [97]

We need to use what we know about rectangles to get:

1)

  • Total length = 2*W + 8ft
  • Total width = W + 8ft

2) area = 2*W^2 + 24ft*W + 64ft^2

<h3>Working with rectangles:</h3>

We know that rectangles are defined by two measures, width W and length L.

Here we do know that the length of the pool is twice the width, and the width is W, then the length of the pool is:

L = 2*W

And we also have a sidewalk of 4ft all around the pool, now we want to get:

1) The total length and the total width.

This will be equal to the length/width of the pool <u>plus twice the width of the sidewalk</u> (we add it twice because is in both ends) then we have:

  • Total length = L + 2*4ft = 2*W + 8ft
  • Total width = W + 2*4ft = W + 8ft

2) Now we want to get an expression for the total area of the pool.

Remember that for a rectangle the area is just the product between the width and the length, so to get the area of the pool with the sidewalk we just take:

area = (total length)*(total width)

area = (2*W + 8ft)*(W + 8ft) = 2*W^2 + 3*W*8ft + 64ft^2

area = 2*W^2 + 24ft*W + 64ft^2

This is the equation that gives the total area as a function of W, the width of the pool.

If you want to learn more about rectangles, you can read:

brainly.com/question/17297081

6 0
3 years ago
The rent for an office space is $674.30 per month. The office is 306 1/2 square feet in area.What is the monthly cost per square
Rufina [12.5K]
The answer is B because 674.30 divided by 306.5 equals 2.2 or $2.20
3 0
3 years ago
What is the value of the 1 in 178
Igoryamba
The value of 1 in 178 is 100 since it is in the hundreds place.  The value of 7 in 178 is 70 and the value of 8 in 178 is 8.  The hundreds place carries numbers from 1 to 9.  Once you get to 10, you add a digit to the number such that you now have four total numbers and the first digit is in the thousands place.
3 0
3 years ago
Suppose 100 people all toss a hat into a box and then proceed to randomly pick out a hat. what is the expected number of people
tatuchka [14]
1 person because there is 1 in 100 chance that you get your hat back
4 0
3 years ago
How to complete equation and tell property with 21*blank =9*21
LenaWriter [7]

21*x=9*21

9*21=189

21*x=189

Divide 189 by 21 to solve for X or in this case "Blank"

189/21= 9


5 0
3 years ago
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