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andreev551 [17]
3 years ago
5

Triangle PQR is isosceles with PQ = PR. A semi-circle

Mathematics
1 answer:
Vilka [71]3 years ago
8 0
I only need point sorry
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A fence must be built to enclose a rectangular area of 20,000 square feet. fencing material cost $2.50 per foot for the two side
Zolol [24]
The area is:
 A = x * y = 20000
 The cost function is:
 C = 2.50 (2x) +3.50 (2y)
 Rewriting we have:
 C = 5x + 7y
 Writing as a function of x we have:
 C = 5x + 7 (20000 / x)
 Rewriting:
 C (x) = 5x + 140000 / x
 We derive:
 C '(x) = 5-140000 / x ^ 2
 We equal zero and clear x:
 0 = 5-140000 / x ^ 2
 140000 / x ^ 2 = 5
 x ^ 2 = 140000/5
 x = root (140000/5)
 x = 167.33 feet
 Therefore the cost is:
 C (167.33) = 5 * (167.33) + 7 * (20000 / 167.33)
 C (167.33) = 1673.32 $
 Answer:
 
The cost of the least expensive fence is:
 
$ 1673.32
3 0
4 years ago
Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping? x2(4x + 1) – 2(4x + 1) x2(4x – 1) + 2(4x – 1) 4x2
Airida [17]
Looking at   <span>4x3 + x2 – 8x – 2, I see immediately that x^2 can be factored out of the first 2 terms => 4x^2(x+1)
and -2 out of the last 2 terms => -2(4x+1).

Notice how the factor (4x+1) shows up twice.

We can factor this (4x+1) out, obtaining   (x^2 - 2) (4x+1).  These are the desired factors, found "by grouping."

</span>
4 0
3 years ago
Read 2 more answers
Please help here is the problem!
icang [17]
<h3>Answer:  k^2*p^6</h3>

Work Shown:

s = length of each side

s = kp^3

A = area of square

A = s^2

A = s*s

A = (kp^3)*(kp^3)

A = (k*k)*(p^3*p^3)

A = k^2*p^6

To multiply the terms, you add the exponents. Think of k as k^1, so k*k = k^1*k^1 = k^(1+1) = k^2

3 0
3 years ago
A. The sum of Andre and Brandon scores on a math quiz is 180. Andres score is 2 times more than 30 less than Brandon score. Find
pantera1 [17]
A)

a+b=180 and a=2(b-30) using this in the first equation gives you:

2(b-30)+b=180

2b-60+b=180

3b-60=180

3b=240

b=80 so a=100

Andre's score was 100 and Brandon's score was 80.

b)

100x-200>50x-75  subtract 50x from both sides

50x-200>-75  add 200 to both sides

50x>125  divide both sides by 50

x>2.5
8 0
3 years ago
Complete the chart :)
Fofino [41]

Answer: here's the answer in the picture. hope this helps. God bless you. can i get brainliest??

3 0
3 years ago
Read 2 more answers
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