# Questions Asked onSeptember 21, 2013

1. ## Math

Write an equation for the line of the given point and perpendicular to the given line. Please help (5,-4);2x+9y=4

3. ## Math

What's the equation of the line containing the given point and perpendicular to the given line. (5,-3);6x+5y=7 Also (4,5);6x+y=4. In the forms of y=mx+b Thank you for your help.

4. ## English

1. Pour yourself another cup of tea. 2. Pour another cup of tea. (Are both grammatical? What is the function of 'yourself' in Sentence 1?)

5. ## Math (College Level Mathematics)

Fourier cosine series correspondence for f(x)= x, o < x < pie given by x ~ pie / 2 - 4/n, E infinity on top and n=1 on bottom. cos (an-1)/x / (2n-1)squared, (0 < x < Pie). Explain why this correspondence is actually an equality for 0 is less than or equal

6. ## Math (College Level Mathematics)

Fourier sin series for f(x) = 1, 0 < x < Pie is given by 1 = 4/n E 1/ (2n-1) times sin (2n-1) x, (0 < x < n). Using this, find the Fourier sinc series for f(x)= 1, on 0 < x < c where c > 0. Then find the Fourier series for g(x), x > 0 where g(x) = 1, 0 < x

7. ## Math

An elevator moves at a rate of -5.8 feet per second from a height of 300 feet above the ground. It takes 3 seconds for the elevator to make its first stop. How many feet above the ground is the elevator now?

8. ## a

can someone help me with steps 0>x^2 +5x-2

9. ## algebra

I need to find the first five terms in the arithmetic sequence in an =(2)^n-1 n=1 I don't know now to type the n's smaller.

10. ## algebra

I have to find the solution for (fg)(x) f(x)= -6x-1 g(x)=4x^2 can you show steps please

11. ## algebra

A parallelogram is 22 inches long and 14 inches wide. How do you find the height of the parallelogram? How do you find the area of the parallelogram ?

12. ## college physics

(a) Two protons in a molecule are 3.80 multiplied by 10-10 m apart. Find the electrical force exerted by one proton on the other. Magnitude N (b) State how the magnitude of this force compares with the magnitude of the gravitational force exerted by one

13. ## college physics

In the Bohr theory of the hydrogen atom, an electron moves in a circular orbit about a proton, where the radius of the orbit is approximately 0.542 multiplied by 10-10 m. (The actual value is 0.529 multiplied by 10-10 m.) (a) Find the electric force

14. ## college physics

A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 µC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center. N/C

15. ## Chemistry

A sample of glucose, C6H12O6, contains 5.1x10623. a.)How many atoms of hydrogen does it contain? b.)How many molecules of glucose does it contain? please help me. :(

16. ## Chemistry

A sample of glucose, C6H12O6, contains 5.1x10623. a.)How many atoms of hydrogen does it contain? b.)How many molecules of glucose does it contain? please help me. :(

17. ## Bus/475

why should core values remain relatively constant.

18. ## triangles (math)

BO and CO are respectively the bisector of angle b and angle c triangle ABC.AO produced meets BC at P, then find AB/AC.

19. ## ENGLISH (ESL)

please need proof Reading Health promotion means what you can do to reduce the health risks and promote the wellness of a human being. This process directed towards enabling people to take action and support them in changing their lifestyle to move toward

20. ## math

Order: Furosemide 40mg IV push every 12 hours x 3 days. have 50 mg dont clue how to do this .

21. ## polynomials

can someone please help me with this problem I have to get the sum diff and product I keep trying to work it out but i really think im blowing it. x^3- ¡¼2x¡½^2 + 3x-1 ¡Ã x^2- x+4

22. ## polynomials help me please

Im sorry here is the problem rewritten X^3 -2x^3 + 3x-1 : X^2-x+4 I have to get the sum diff and product and it kicking my tail i think i keep doing it wrong can someone please help me

23. ## math

The variable n represents a whole number. a. For what values of n will the sum of n+3 be less than 50? b. For what values of n will the product 3n be less than 50?

24. ## Chemistry stoch1

Calculate mass of iron, which will be converted into (Fe3O4) by the action of 18g of steam on it.

25. ## Chemistry

A sample of 2.08 grams of Z is dissolved into 500 grams of water which is in a styrofoam coﬀee cup. The temperature is monitored and is found to rise from 25.682◦C to 25.899◦C. What is ∆Hsolution for substance Z? Assume no heat is lost/gained by

An important factor of being judged a best company to work for is the input provided by company employess.

27. ## statistics

if a toaster ovens hav an average life expectancy of 9.5 years with a standard deviation of 4.75 years. what is the probability that a toaster oven will last twenty years or will fail in one year or less?

What is the simplified form of the following expression? 7m^2 + 6.5n - 4n + 2.5m^2 - n a. 9.5m^2 + 1.5n (?) b. 4.5m^2 + 1.5n c. 1.5m^2 - 4.2n d. 9.5m^2 - 1.5n Simplify the following expression. 1/3(21m + 27) a. 7m + 27 b. 7m + 9 (?) c. 63m + 9 d. 7m + 81

29. ## Englsih

Please edit this writing. There are several errors in this writing. People take out oil from the sands in AB so we can drive and leave tailings ponds. This caused a lot of damage to the land and negative impacts to wildlife. Natives get sick from eating

30. ## English

Please edit this writing. There are several errors. Also, evaluate the writing, style, spelling and content of this writing piece. The Alberta oil sands are being developed at an unprecedented rate for oil extraction. Consequently there is a great deal of

Which property is illustrated by the following statement? 2x(6) = (6)2x a. Associative Property of Addition b. Commutative Property of Multiplication (?) c. Inverse Property of Multiplication d. Commutative Property of Addition Which property is

32. ## English

Please evaluate the writing, grammar, style, spelling as well as content. People take out oil from the sands in AB so we can drive and leave tailings ponds. This caused a lot of damage to the land and negative impacts to wildlife. Natives get sick from

33. ## statistics

if anxiety scores were recorded as Z score or 1.10, is that higher than 35 in the current study?

34. ## math

If f (x,y)= x-y+3, What is f (f (6,4), 2)? A. 12 B. 11 C. 6 D. 3 E. 2

35. ## Chemistry

What is the energy of a bond formed between a potassium (K+) cation and an iodide (I−) anion? The ionic radii of K+ and I−, are 152 pm and 206 pm, respectively. Assume the Born exponent n is 10

36. ## Chemistry

Calculate the cohesive energy of potassium iodide (KI). The ionic radii of K+ and I−, are 152 pm and 206 pm, respectively. Assume the Born exponent n is 10. Assume a Madelung constant of 1.7.

37. ## Math

In a certain Library, there are r bookcases with s shelves in each book case. If a total of b books is to be distributed among the shelves, What is the number of books per shelf? a) b/rs b) rb/s c) rsb d) r/s-b e) b/s-r

38. ## Statistics

2. A researcher hypothesized that the pulse rates of long-distance athletes differ from those of other athletes. He believed that the runners’ pulses would be slower. He obtained a random sample of 10 long-distance runners. He measured their resting

39. ## Algebra

Two cyclists leave towns apart at the same time and travel toward each other. One cyclist travels slower than the other. If they meet in hours, what is the rate of each cyclist?

What is the algebraic expression for the following word phrase: the quotient of 6 and the sum of 5 and y? 6 a. ----- 5-y 6 b. ----- (?) 5+y c. 6(5+y) d. 6/5 + 6y What is the algebraic expression for the following word phrase: the quotient of j and 8? a.

41. ## math

The average of 20,70 and x is 40. If the average of 20,70, x and y is 50, then y= a. 30 b. 60 c. 70 d. 80 e. 100

42. ## Physics

A runner is jogging at a steady 2.7 km/hr. When the runner is 7.7 km from the finish line, a bird begins flying from the runner to the finish line at 5.4 km/hr (2 times as fast as the runner). When the bird reaches the finish line, it turns around and

43. ## Math

A 10-foot fence was set 2 5/6 feet into the ground. What is the exact length of the fence above ground?

44. ## math

in triangle ABC, AB=6, BC=12 AND AC=X. Which of the following cannot be a value of x? a. 6 b.7 c.8 d.9 e.10

45. ## Chemistry.........

Elemental chlorine exists as a diatomic molecule Cl2. Chlorine atoms exist in two different isotopes 35Cl and 37Cl. In the mass spectrum of chlorine molecules, how may peaks due to chlorine atoms would be observed? 2 how many different peaks due to the

46. ## chemistry

Butane gas, C4H10(g), is commonly used as a fuel in barbeque gas cylinders. Write a balanced chemical equation for the combustion of butane gas

47. ## body system

a 63 year old man has become progressively hard of hearing. hes a retired airplane maechanic. what kind of hearing loss is this man most likely to have

54. ## physics

The initial speed of a cannonball is 520 m/s. The acceleration of gravity is 9.8 m/s 2 . The cannon and target are at the same elevation. If the ball is to strike a target that is at a horizontal distance of 2.7 km from the cannon, what is the minimum time

55. ## Physics

You are given three vectors. A = 45.6 at θ1 = 51.2° above the +x axis, B = 23.6 at θ2 = 32.8° above the −x axis, and C = 34.0 along the −y axis. Determine A - B + C (magnitude and angle from the positive x axis).

100. ## Math

A new car depreciates as soon as you drive it out of the parking lot. A certain car depreciates to half its original value in 4 years. IF you bought a car 8 years ago, and it's now worth \$5,000, how much did you pay for the car originally?

y/11=3

102. ## Cell Biology

Suppose 1.00 ml of blood from a given donor contained 5 X 106 red blood cells and the donor’s hematocrit were 48%. Determine the surface area that the lipids extracted from the plasma membranes of red blood cells obtained from 10.0 ml blood would occupy

-22+y=y/-14

104. ## algebra

Can someone help me with steps showing select approximate value of x that are solutions to f(x)=0 f(x)=-7x^2 + 5x + 9

105. ## algebra

-22x + 11y +55z =

106. ## chemistry

The radius of a aluminum atom is 143 pm. How many aluminum atoms would have to be laid side by side to span a distance of 4.90 mm?

107. ## english

There was no danger, difficulty, or that could ponce de leon from venturing into the jungles of florida to search for the fountain of youth. a= obstructuion...deter b=procrastination... subside i know the definitions its to hard i think its b

108. ## Chemistry

An element with the symbol Z has the electron configuration 2.8.6. Which species is this elrment most likely to form? A. The ion Z 2+ B. The ion Z 6+ C. The compound H subscript 2 Z D. The compound Z subscript 6 F Which ionization requires the most energy?

109. ## PURE MATHEMATICS

5) find the complex number z and w such that z+w=4+3i and z-iw=3-2i

110. ## English

what is the Past Present and future for carry

111. ## socials

An extension to my other question- how did oliver cromwell like impact the world and why was he significant? It could relate to if he had high moral principles. I wrote my essay but I don't know how to close it up.

112. ## Chemistry

When electrons get excited can they only move up one level or can they go up multiple orbitals, but just one at a time.