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Ugo [173]
3 years ago
7

Lydia had 20 minutes to do a three-problem quiz. She spent 9 7/10

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

Answer:

4 9/10 minutes.

Step-by-step explanation:

9 7/10 + 5 2/5 = 15 1/10.

20- 15 1/10 = 4 9/10 minutes.

:D

Brainliest?

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Adam is 4 years old his brother is half his age how old will the younger brother be when Adam is 50
Debora [2.8K]
The younger brother will be 48 when Adam is 50
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3 years ago
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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
Describe how you would find the of 24 36 and 13
erik [133]
Add them all together and there is your sum
5 0
3 years ago
Write a number in which the value of the 3 is ten times greater than the value of the 3 in 135, 864
Aleonysh [2.5K]

Answer:

345,456

Step-by-step explanation:

The value of 3 in 135,864 is 30,000.

We want to write a number that is ten times 30,000.

We could write any other number in which the value of 3 is 300,000.

There are infinitely many numbers that we can write.

Some examples are:

345,456

1,315,445

5,354,456

and so on and so forth.

8 0
3 years ago
Find g(1) if g(x) = x 2 + 1.
Genrish500 [490]

Answer:

g(x) = x^2 + 1

if x=1

g(1) = 1^2 + 1

g(1) = 1 + 1

g(1) = 2

8 0
2 years ago
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