Monday
April 21, 2014

Posts by Barry


Total # Posts: 66

biology
I have to do a lab report on the effect of metal ions on enzyme activity One of the questions asked the sources of error and one asked the methods used I got stuck, can you pls help

Algebra
each side of the new area of the garden = 13 since 13x13 = 169 (side x side = area of square) so 13-9 =4m Therefore, 4m should be the answer

PreCal
log(base 3) x*(x-80)=4 3^4 = x(x-80) 81 = x^2 - 80 quadratic equation x= -1(rejected) or 81 x= 81 log properties used= log(base a)b=k a^k=b hope it helps :)

PreCal
log(1/4) = (3x+5)log8 log0.25/log8 = 3x+5 -2/3 = 3x+5 x= -17/9

Probability
1/13

Math
4x4+4x4+4-4x4=?

Math
A manufacturer of soft-drinks advertises that their orange soda as "naturally flavored," although it contains only 5% orange juice. A new federal regulation stipulates that to be called "natural" a drink must contain at least 10% fruit juice. How much pure ...

Math
A pot contains 6 liters of brine at a concentration of 120g/l. How many liters of the water should be boiled off so that concentration of the brine is 200g/l.

math
I have a diagram of an occupied building space within a larger building represented by 49 equal squares but no linear measures for the sides. The space is 120,000 sq ft. how can i estimate the lengths and widths of the floor space with just this information?

math-urgent please help
Newton’s Law of Cooling states that the temperature of a heated object decreases exponentially over time toward the temperature of the surrounding medium. The temperature u of a heated object at a given time t can be modeled by the following function: u(t)=T+(u-T)e^kt K&l...

math
you have an unfortunate brush with the law and you are required to spend some time in the penitentiary. (Naturally you have brought your math 30 course notes with you for a bit of light bedtime reading. You also hope to enlighten your fellow inmates with your mathematical virt...

algebra
-4x-5=6+3x

math
simplify this expression (3xy)^2(2x^2z)^3

Math
A piece plywood 24 inches wide is cut into strips 2 and a half inches wide, how many strips of this with can be cut. Please help,7th grade.

Physics
A ball was thrown straight up at 26.2 m/s then caught at the same place it was released. How many seconds was it in the air?

Physics
A brick dropped from a roof hits the ground 4.14 seconds later. How high (in m) was the roof?

chemistry
ethanol is a common laboratory solvent and has a density of 0.789 g/ml what is the mass in grams of 139 mL of ethanol

math
is 6.31 equal to 0.631

Physics
A prism, made of glass of refractive index 1.50, has two plane faces at an angle 33 to each other. A ray of light enters the glass from one side perpendicular to that face and emerges through the other. Part A: As the ray enters the glass, what is its angle of incidence ? Give...

Physics
Laser light with a wavelength = 665 illuminates a pair of slits at normal incidence. What slit separation will produce first-order maxima (i.e. m=1) at angles of 8 from the incident (or straight through) direction? Remember, 1 nm = m. Express your answer using two significant ...

Physics
A submerged scuba diver looks up towards the calm water of a lake and notes that the Sun appears to be 20 from the vertical. The diver's friend, standing on the shore of the lake, is also looking at the Sun. At what angle from the vertical does the diver's friend see t...

Physics
I don't know how to calculate it, that's why I was looking for help

Physics
A large fish tank is filled with water (of refractive index 1.33). One side of the tank is made of a parallel-sided piece of glass. A ray of light strikes the glass from the outside at an angle of incidence of 48. Estimate the angle through which this ray is deviated as it eme...

math
how to solve the set of system equations 6x - y - 2 = 0 dan 3x - 2y + 5 = 0

AP CHEMISTRY
idk

math- algebra
If the principal P = $900, the rate r = 4 1/2, and time t = 1 year, find the following: What is the amount of interest? What is the future value?

business
2. Think of a risk response plan that you have in your personal life, such as automobile, homeowner’s, or renter’s insurance. What were some of the decision criteria that influenced your decision about how much coverage to purchase? How does your decision-making proc...

business
1. What kind of risk analysis would you use when purchasing a house or a personal vehicle? Describe this analysis. How does this process assist you in making your decision? Do you believe the process is efficient and achieves the results you desire? How might you improve your ...

Finding gradient at a given point
44x + 11 :)

Math
6.34 x 10 to the fifth power

Physics
5000 / (72*144) pounds /inch^2 does this help baz my friend?

Physics
5000 / (72*144) pounds /inch^2 does this help baz my friend?

Physics
How much pressure is exerted by a 5000 pound moving vehicle vehicle (hehicle is 6' x 12')?

spanish
How would I complete this question? hago mi tarea en la_______

1st grade
if yo have three words friend, things & might which word has the long i sound and which word can you get by adding a sound to in? a tin,b hid c find

Grammar
Which sounds better my brother knows more about technology than me or I

math
for people each bought two bottles of vermont maple syrup. each person plans to share their bottle with three friends. how much does each person get?

grammar
The dock is on Fish Lane. CAPITALIZE the proper nouns in the sentence.

grammar
trying to Capitalize the proper nouns in the sentence

garmma
She and mom got to the Dock late.

physic
WAIT!!!!! i did h-r instead of h+r... therefore rework the steps with h+re instead of h-re..... sorry

physic
which it's not at all... if you start with g=GMe/re^2 then the difference in the two gravitys would be: (GMe/re^2)-(GMe/(h-re)^2=.007 to get like sides here, start by factoring out a GME... leaving you with GMe(1/re^2 - 1/(h-re)^2)=.007 divide both sides by GMe and you hav...

physic
Actually, to do it the way he did would be wrong all together, because you would have to foil the (1+h/re)^2... you would have to multiply bothe sides by (1+h/re)^2 first... giving you: GMe-GMe=.007(1+h/re)^2 Obviously, GMe-GMe would give you zero... creating a quadractic equa...

literature
"The best in this kind are but shadows" is

Physics121
What are the three longest wavelengths for standing sound waves in a 124-cm-long tube that is (a) open at both ends and (b) open at one end, closed at the other?

1st grade
She and mon got to the Dock late.

Accounting
Horse Country Living publishes a monthly magazine for which a 12-month subscription costs $30. All subscriptions require payment of the full $30 in advance. On August 1, 2008, the balance in the Subscriptions Received in Advance account was $40,500. During the month of August,...

Writing
How can we answer this question in that section 1 and2

human life
WHOSE LIFE IS IMPORTANT?

Business English
Sorry if I spelled your name wrong. If you do not care it would be some good news joceyln

Business English
Wow. You have a lot of posts for your question Jocelyn

Business English
Hi hi hi hi

Business English
If I am annoying then tell me to stop. To tell me to stop you have to search my name in the right box that says search. P.s. it's right above the member login. Then click my name and annoy me to tell me to stop!

Business English
If I am annoying then tell me to stop. To tell me to stop you have to search my name in the right box that says search. P.s. it's right above the member login. Then click my name and annoy me to tell me to stop!

Business English
Bye Bye Bye Bye

Business English
Hi Hi Hi Hi

Business English
Bye Bye Bye Bye

Business English
Hi Hi Hi Hi

Finance
I dont have a formula for this question: Purchasing Power= 1280.08 (Nov.1/07) Purchasing Power= 1000.00 (Nov.1/97) What is the annual rate of inflation? I think it can be solved 1280.08/1000 -1 but Im not sure??

English
What is the rhyme scheme, meter, and stanza form for the poem "The Lamb" by William Blake? The Lamb Little Lamb, who made thee? Dost thou know who made thee? Gave thee life, and bid thee feed By the stream and o'er the mead; Gave thee clothing of delight, Softest...

Physics / Astronomy
Here is my question: Consider the bending of light by the gravitation of the Sun as described by Newtonian physics. Light of frequency f passes at a distance d from the center of the Sun, which has a mass M. Show that the bending angle of the light is proportional to M/d. I...

Statistics
a) .0225 b) =1-P(x=0)=.0445 c) I do not know.

english
what are the pros and cons of joining "netville 2" a computer company that came to your neighbourhood. We will be happy to critique your thinking on this. thanks im having trouble thinking of cons. The only thing i have for cons are: hidden fees and isolation and i h...

physics
A bat flying in a cave emits a sound and receives its echo 0.5 s later. How far away is the cave wall? I answered this below. If you cant find it, search on bat flying in the search window above.

physics
A skipper on a boat notices wave crests passing his anchor chain every 9 s. He estimates the distance between wave crests to be 15 m. He also correctly estimates the speed of the waves. What is this speed? Wavelenght* frequency= wave speed remember that frequency here is 1wave...

physics
A car crashes into a wall at 20 m/s and is brought to rest in 0.1 s. Calculate the average force exerted on a 75 kg test dummy by the seat belt. Force*time= change in momentum mv solve for force.

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