# Posts by cain

Total # Posts: 21

Science
Nope, the answer is B. Photosynthesis takes place in the chloroplasts. They look green because they contain a substance called chlorophyll.

World History
The Haida are located off the coast of Alaska. The Inuit live in Arctic regions of Canada. The Iroquois lived around where New York is now. The Pueblo lived in the southwestern US. Which two of these tribes do you think lived in an environment that could support farming?

chemistry
61/12.01 = 5.079/2.0375 = 2.5 6.6/1.008 = 6.5476/2.0375= 3.21 32.6/16 = 2.0375/2.0375= 1 I know to get the empirical formula, i Have to make these all whole numbers so I multiplied by 10 to get C25H32O10.

chemistry
A compound is found to have 61% carbon, 6.6% hydrogen, and 32.6% oxygen. What is the empirical formula of this compound? I got C25H32H10 but the subscripts seem absurdly large.

Algebra
a compound inequality would mean like a number < x < a number you know that the number is between 23 and 32 23 < x < 32 but its not just x, its 3x +5 23 < 3x + 5 < 32

English
I believe negative is more commonly used but both seem to be okay. I've only really heard minus when someone's talking about the weather, like minus 10 degrees or 10 degrees below 0.

Statistics
An article in a Health Magazine suggested getting a dog to encourage more regular walking. A researcher for the article found that the distribution of time spent walking dogs is approximately normally distributed with a mean of 38 minutes per day. However he also found that 13...

chemistry
which one do you think it is

chemistry
you know its not a or b because "rate" implies speed, not amount. And you know its not d because products do not decompose into anything, they're already the end goal. So the answer must be C. Reaction rate is the speed at which a chemical reaction proceeds.

math
use a system of equations let x = the number of horses and y = the number of hens hens have 2 legs, and horses have 4 x + 7 = 27 (the number of horses plus the number of hens equals 27 animals) 4x + 2y = 70 (four legs on every horse plus 2 legs on every hen equals 70 legs)

pre calculus
Find all of the solutions of the equation x^4-625i=0 and represent the solutions graphically.

World History
the answer for #2 is B

Chemistry
An office heater puts out 2070 Btus (British thermal units) of energy in the form of heat per hour. Given that 1 Btu = 1.055 kJ, how many megajoules of energy in the form of heat can be produced per year (365 days) by the heater (assume continuous operation)?

Chemistry
The volume of a sphere is given by V=(4/3)3.14r^3, where r is the radius. Compute the volume of a sphere with a radius of 329pm. state your answer in units of m^3.

College alerbra
yes i meant 4^(x+2)=9^x

College alerbra
solve the exponential equation. 4^(x+2)=9x

Bridge Math
i have no ideaaaaaaa

intense algebra
thank you sue

intense algebra
well my computer don't have the symbol i need. let my put it in words then one ninth times 24 over 25

intense algebra
which value is the closest to 1/9.24/25 a. 0 b. 0.5 c. 1 d. 21/20

math
not understanding this assignment, it ask, terrence skated 8 feet in 4 seconds at a constant rate, how fast did he skate in feet per second