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Alinara [238K]
4 years ago
7

A cone shaped roof has a diameter of 12 feet a height of 8 feet and a slant of the roof is 10 feet if the roofing cost a total o

f $3089.76 how much does it cost per square feet
Mathematics
1 answer:
vitfil [10]4 years ago
3 0

Answer:

c = 16.392\,\frac{USD}{ft^{2}}

Step-by-step explanation:

The surface area of the cone shaped roof is:

A_{s} = \pi\cdot (10\,ft)\cdot (6\,ft)

A_{s} \approx 188.496\,ft^{2}

The cost of roofing per square feet is: (USD stands for US dollar)

c = \frac{3089.76\,USD}{188.496\,ft^{2}}

c = 16.392\,\frac{USD}{ft^{2}}

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Explain why the polynomial 100x^2 + 150x + 49 is not a perfect square.
Ad libitum [116K]
Answer: The correct answer is Choice C.

For this polynomial to be a perfect square, it would need to be:
(10x + 7)^2

This will ensure that the first terms and the last terms will be 100x^ and 49. However, if you use foil to multiply the factors, you will not get 150x for the center term. Choice C also states that 150x will not be the middle term.
4 0
3 years ago
Can someone help me with this problem??
Crank

Answer:

V = 33.49

Step-By-Step Explanation:

V = 4/3πr³

V = 4/3×π×2³

V = 4/3×π×8

V = 4/3×25.12

V = 33.49333...

Shortened

V = 33.49

4 0
3 years ago
-3.1x +6x = 2+3z+8-10<br> =
lapo4ka [179]

Answer:

_

z=96x

(line on top of the nine)

Step-by-step explanation:

6 0
3 years ago
Is either of these a polynomial?<br><br><br><br> 2 + s<br><br><br> X^2−√x+2
levacccp [35]
Hello there,

2 + s is a polynominal because it obeys at the rules.

However x^2 - square root of x + 2 isn't a polynominal because the variable is inside a radical for the square root.

Hope this helps !

Photon
5 0
4 years ago
Help is needed!!!!! im bad at math :,)
elena55 [62]

Answer:

Step-by-step explanation:

A= π(5)²

 = 3.14(5)²

 = 3.14(25)

 = 78.5 ans

3 0
2 years ago
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