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3 years ago

Can someone help me my home work is due tomorrow!!

Mathematics

2 answers:

Elodia [21]3 years ago

7 0

1. 6.6

2. 0

3. 6.82

4. 2

5. 6.9

6. 3.41

7. 7

8. 6

9. 4.4

10. 5

11. 3.82

12. 10

13. 3.1

14. 2.1

15. 4.52

16. 5.5

17. 7.0

18. 4.9

19. 8.7

20. 1.2

olga_2 [115]3 years ago

7 0

(1) = 6.6

(2) = 0

(3) = 6.82

(4) = 2

(5) = 6.9

(6) = 3.31

(7) = 7

(8) = 6

(9) = 4.4

(10) = 5

(11) = 3.82

(12) = 10

(13) = 3.1

(14) = 2.1

(15) = 4.52

(16) = 5.5

(17) = 7.0

(18) = 4.9

(19) = 8.7

(20) = 1.2

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A basic cellular phone plan costs $4 per month for 70 calling minutes. Additional time costs $0.10 per minute. The formula C= 4+

Harrizon [31]

Answer:

For a monthly cost of at least $7 and at most $8, you can have between 100 and 110 calling minutes.

Step-by-step explanation:

The problem states that the monthly cost of a celular plan is modeled by the following function:

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In which C(x) is the monthly cost and x is the number of calling minutes.

How many calling minutes are needed for a monthly cost of at least $7?

This can be solved by the following inequality:

$C(x) \geq 7$

$4 + 0.10(x - 70) \geq 7$

$4 + 0.10x - 7 \geq 7$

$0.10x \geq 10$

$x \geq \frac{10}{0.1}$

$x \geq 100$

For a monthly cost of at least $7, you need to have at least 100 calling minutes.

How many calling minutes are needed for a monthly cost of at most 8:

$C(x) \leq 8$

$4 + 0.10(x - 70) \leq 8$

$4 + 0.10x - 7 \leq 8$

$0.10x \leq 11$

$x \leq \frac{11}{0.1}$

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For a monthly cost of at most $8, you need to have at most 110 calling minutes.

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4 years ago

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The diameter of the tube d= 0.01m

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The partial pressure of CO2 at the first end is

P1= 456mm Hg = 60794.832 Pa

The partial pressure of CO2 at the other end is

P2= 76mm Hg = 10132.472 Pa

The temperature is T = 298 K

The diffusion coefficient D= 1.67* 10^-5 m^2/s

Generally the molar flux of CO2 is mathematically represented as

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2 years ago

Solve the following quadratic equation.

Nonamiya [84]

Given:

Consider the given equation is

$(x-18)^2=1$

To find:

The values of x.

Solution:

We have,

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Now,

$x=1+18$ and $x=-1+18$

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Therefore, the correct option is A.

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