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Andreyy89
3 years ago
15

bejamin writes an expresssion for the sum of 1 cubed 2 cubed and 3 cubed what is the value of the expresssion​

Mathematics
1 answer:
sashaice [31]3 years ago
5 0

Answer:

36

Step-by-step explanation:

1^3 + 2^3 + 3^3 = 1 + 8 + 27 = 36

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Find the surface area of the regular pentagonal pyramid.
mr_godi [17]
Area of each side triangle is 1/2*8*15 = 60. There are 5 of them so the triangles have surface area 300. the pentagon's area 1/2*apothegm*sidelength*sides = 1/2*5.5*8*5 = 110. The total area is therefore 300+110 = 410
3 0
3 years ago
A survey asked only girls to identify their favorite item on the
MA_775_DIABLO [31]

Answer:

B

Step-by-step explanation:

A biased sample is a sample that does not accurately represent the population.

The survey asked only girls, but we can assume this school has both boys and girls. Therefore, by only asking girls, it creates a bias, because the boys in the school are not represented.

Therefore, the correct choice is B: biased sample.

6 0
3 years ago
You operate a gaming website, www.mudbeast.net, where users must pay a small fee to log on. When you charged $4 the demand was 5
sertanlavr [38]
A) Demand function

price (x)          demand (D(x))

4                      540

3.50                  810

D - 540          810 - 540
----------- =  -----------------
x - 4               3.50 - 4

D - 540
----------- = - 540
x - 4

D - 540 = - 540(x - 4)

D = -540x + 2160 + 540

D = 2700 - 540x

D(x) = 2700 - 540x

Revenue function, R(x)

R(x) = price * demand = x * D(x)

R(x) = x* (2700 - 540x) = 2700x - 540x^2

b) Profit, P(x)

profit = revenue - cost

P(x) = R(x) - 30

P(x) = [2700x - 540x^2] - 30

P(x) = 2700x - 540x^2 - 30

Largest possible profit => vertex of the parabola

vertex of 2700x - 540x^2 - 30

When you calculate the vertex you find x = 5 /2

=> P(x) = 3345

Answer: you should charge a log-on fee of $2.5 to have the largest profit, which is $3345.




5 0
3 years ago
What is the perimeter of a lawn that is 25 feet long and 20 feet wide?
drek231 [11]

Answer:

a. 90 ft

Step-by-step explanation:

20+20+25+25

4 0
3 years ago
Read 2 more answers
Help! If anyone knows thanks
DerKrebs [107]
A:
2t
t is the number of toys

b:
(p+12)/16
p is the price
6 0
3 years ago
Read 2 more answers
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