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gavmur [86]
3 years ago
8

I need help extra points and work brainlyisr

Mathematics
1 answer:
arsen [322]3 years ago
8 0

Answer:

106.25

Step-by-step explanation:

if u multiply 8.5 by 12.5 then you get 106.25 :)

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You have 350 feet of fencing to enclose a rectangular plot that borders on a river. If you do not fence the side along the river
IrinaVladis [17]

The length and width that will maximize the area are 175 ft and 87.5 ft respectively

The largest area that can be enclosed is 15312.5 ft²

<h3>Area of a rectangle</h3>
  • area = lw

where

l = length

w = width

The fencing is 350 ft it is use to enclose a rectangular plot with a river occupying one part.

Therefore,

perimeter = l + 2w

350 = l + 2w

l = 350 - 2w

area = (350 - 2w)w

(350 - 2w)w = 0

where

w = 0 or 175

average = 175/2 = 87.5

Hence, the max area is at w = 87.5 ft

Therefore,

l = 350 - 2(87.5) = 175 ft

length = 175 ft

width =  87.5 ft

Therefore,

area = 175 × 87.5 = 15312.5 ft²

Therefore, the largest area that can be enclosed is 15312.5 ft²

learn more on rectangle here: brainly.com/question/11630499

4 0
2 years ago
Folders are on sale for $0.15 each. Notebooks are $4.25 each. There are 225 students in 7th grade. What is the total amount it w
Harrizon [31]

Answer:

$1023.75

Step-by-step explanation:

2*.15=.30 + 4.25= 4.55

4.55 * 225 = 1023.75

7 0
3 years ago
Bobby thinks 5^2=10 what is wrong with this answer
nignag [31]

Answer:

5^2 means 5*5 not 5*2

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
What logaa equals??​
Lelu [443]

Answer:

Logarithm I think

Step-by-step explanation:

If u need more explanation u can ask me

8 0
3 years ago
The length of a rectangle is x feet more than its width. The area of the rectangle is 5x + 25. What is the width of the rectangl
AVprozaik [17]

Answer:

w = l + \frac{25 - l^{2}}{l - 5}

(Anyone can correct me if I'm wrong)

Step-by-step explanation:

Before we start the solving, we can make the following statements:

Area = l x w

Area = 5x + 25

therefore,

l x w = 5x + 25

Since the question states that the length is x more than the width, so we can make the following statement:

w = l + x

With this, we can substitute it to the first statement we made, l x w = 5x + 25,

l x (l + x) = 5x + 25

l^{2} + lx = 5x + 25

lx - 5x = 25 - l^{2}

x(l - 5) = 25 - l^{2}

x = \frac{25 - l^{2}}{l - 5}

From this, we can find w by substituting it in the statement we made earlier, w = l + x,

w = l + \frac{25 - l^{2}}{l - 5}

6 0
3 years ago
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