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lana [24]
3 years ago
6

What is the surface area?

Mathematics
1 answer:
Nesterboy [21]3 years ago
6 0

Answer:

96

Step-by-step explanation:

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A rectangular parking lot must have a perimeter of 440 feet and an area of at least 8000 square feet. Describe the possible leng
tangare [24]

Answer:

The possible parking lengths are 45.96 feet and 174.031 feet

Step-by-step explanation:

Let x be the length of rectangular plot and y be the breadth of rectangular plot

A rectangular parking lot must have a perimeter of 440 feet

Perimeter of rectangular plot =2(l+b)=2(x+y)=440

2(x+y)=440

x+y=220

y=220-x

We are also given that an area of at least 8000 square feet.

So, xy \leq 8000

So,x(220-x) \leq 8000

220x-x^2 \leq 8000

So,220x-x^2 = 8000\\-x^2+220x-8000=0

General quadratic equation : ax^2+bx+c=0

Formula : x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}

x=\frac{-220 \pm \sqrt{220^2-4(-1)(-8000)}}{2(-1)}\\x=\frac{-220 + \sqrt{220^2-4(-1)(-8000)}}{2(-1)} , \frac{-220 - \sqrt{220^2-4(-1)(-8000)}}{2(-1)}\\x=45.96,174.031

So, The possible parking lengths are 45.96 feet and 174.031 feet

3 0
3 years ago
Will mark first answer brainliest
babymother [125]

Answer:

Step-by-step explanation:

B. -3

Hope that helps!

8 0
3 years ago
Read 2 more answers
Please help! Will give brainly, 50 points!! I'm stuck with this question and I don't get it!
pishuonlain [190]

Answer: The answer is x^2 + 4x - 3

Step-by-step explanation:

You just combine like terms, the only ones that can combine is the 6x and -4x. You just subtract them to get the answer of x^2 + 4x - 3.

7 0
3 years ago
Read 2 more answers
The wheel of a bike has a diameter of 27 inches. Find the circumference of the wheel. Round your answer to the nearest whole num
Readme [11.4K]
By definition, the circumference is given by:
 C = 2 * pi * R
 Where,
 R: Radio
 Substituting values we have:
 C = 2 * pi * (27/2)
 C = 84.82300165 in
 Round to the nearest whole number:
 C = 85 in
 Answer:
 
The circumference of the wheel is:
 
B. about 85 inches
4 0
3 years ago
Read 2 more answers
Greg buys a home for $328,500. His home is predicted to increase in value 4% each year. What is the predicted value of his home
GaryK [48]
The initial value of the Greg`s home: $328,500. If his home is predicted to increase in value 4% each year, that means that the value will rise 1.04 times every year.
The predicted value after 30 years:
$328,500 * ( 1 + 0.04 ) ^30 = 
= $328,500 * 1.04^30 = 
= $328,500 * 3.2434 = 
= $1,065,456.
Answer: The predicted value of his home in 30 years is $1,065,456.
5 0
3 years ago
Read 2 more answers
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