# Posts by Coco

Total # Posts: 87

**Science**

Teachers need a better way to give feedback to students. Writing on everyone's paper takes a lot of time,even though it is effective. Students and teachers need a better way.

**Science**

Five criteria for decision making matrix "teachers need a better way to give feedback to students."

**math**

58.90 duh

**duh**

i dunno. dont even ask.

**Physics**

A car moving with a speed of 180km/h was brought uniformly to rest by the application of the breaks in 20s. How far did the car travel after the breaks were applied?

**Physics**

A particle is at x=+5m at t=0, x=-7m at t=6s and x=+2m at t=10s. Find the average velocity of the particle during the intervals. (a) t=0 and t=6s (b) t=6s to t=10s (c) t=0 to t=10s

**Physics**

An aircraft flies 800km due east and then 600km due north. Determine the magnitude of it's displacement

**Physics**

It took a car driver 30min to travel a distance of 50km. What is the average speed?

**trig**

given cotθ = (1/2) √7, find sinθ and cosθ in quadrant I cotθ = x/y would 1/2 be the x and √7 be the y?

**trig**

would*

**trig**

for #1 i mean (1/2) √7 which 1/2 be the x and √7 be the y?

**trig**

1) given cotθ = 1/2√7, find sinθ and cosθ in quadrant I 2) given tanθ = √5, find secθ and cotθ in quadrant III

**Chemistry**

The equivalence point of any acid titrated with a base occurs when the A. concentration of the acid and concentration of the titrant are equal. B. mass of the acid and the mass of the titrant are equal. C. pH of the mixture of the acid and titrant is 7.0. D. volume of the acid...

**chemistry**

write the balanced chemical equation for the reaction that would occur ewhen a base is added to a solution containing H2PO4-/HPO4^2- buffer system can you please help we write this balanced equation. thank you

**Chemistry**

Can you please explain to me how you would regulate the pressure to favor the products in the this equilibrium system. MgCO3(s)--><-- MgO(s)+CO2(g)

**Chemistry**

Which processes are taking place in the following reaction? 2CO(g) + O2(g) ⇌ 2CO2(g) A. displacement and reduction B. synthesis and decomposition C. ionization and recombination D. sublimation and evaporation Is B right?

**Chemistry**

What is the rate also what is k and Sr i am so confused

**Chemistry**

what information must you know to calculate the boiling point elevation of a solution of hexane in benzene. Is it the temp, Kb and the molality?

**Chemistry**

Ok I got .2799 moles, do i have to convert it to grams, how would I do that.

**Chemistry**

heating cyclopropane (C3H6) converts it to propane (CH2=CHCH3). The rate law is first order in cyclopopane. If the rate constant at a particular temp is 6.22x10^-4 s^1 and the concentration of cyclopropane is held at .0300 mol/L, what mass of propane is produced in 10.0 min in...

**Math**

Which is the best type of graph to show the number of markers in each classroom, if markers come in boxes of 20?

**math**

(3+1/3) * (1+1/4) = 10/3 * 5/4 = 25/6 = 4 1/6

**Math - Algebra**

our riding your bike to the park, sit to read for a while, and then ride your bike home. It takes you less time to ride from the park to your house than it took to ride from your house to the park. Draw a sketch of a graph that shows your possible distance traveled over time. ...

**Chemistry**

An automobile tire has a maximum rating of 38.0 psi (gauge pressure). The tire is inflated (while cold) to a volume of 11.8 Liters and a gauge pressure of 36.0 psi at a temperature of 12.0 Celsius. While driving on a hot day, the tire warms to 65.0 Celsius and it's volume ...

**Consumer Math**

Marta borrowed $1,380 for 15 months at 13 percent APR. How much will she pay in interest?

**Civics**

Yes you are correct!

**Economics**

Are these questions positive or normative? 1)Too many people smoke. 2)Lung cancer kills millions each year. 3)If government were to increase taxes on cigarettes, people would smoke less.

**Math**

The perimeter of rectangular garden is 40 feet. The width is 2 feet more than half the length. What is the length and width

**Science**

thanks big help

**chemistry**

a.2.10

**SS-1 question**

is it right ?

**Government**

name three roles that interest groups play in American electionsl

**physics**

T₁=2πsqrt(m₁/k) T₂ =2πsqrt(m₂/k) T₂ /T₁ =sqrt{ m₂/m₁} T₂ = T₁sqrt{ m₂/m₁}= =3.5•sqrt(2/1) =4.95 s.

**Science**

All the answer is correct

**Math**

Okay I think I get it.. you just used the compliment to add up to 100? We are given 20%... did you say 100-20=80 and then turned 80 into a decimal ?

**Math**

Judy bought a coat at a 20% discount sale for $68. What was the original price of the coat?

**Physics**

A 8.5 dog takes a nap in a canoe and wakes up to find the canoe has drifted out onto the lake but now is stationary. He walks along the length of the canoe at 0.47 , relative to the water, and the canoe simultaneously moves in the opposite direction at 0.17 .What is the mass ...

**Physics**

A 1.2 -long steel rod with a diameter of 0.50 hangs vertically from the ceiling. An auto engine weighing 4.7 is hung from the rod. By how much does the rod stretch?

**statistic**

The time necessary to assemble a discount store display is normally distributed with μ = 5 minutes and σ = 30 seconds. A large number of potential employees are timed assembling a practice display. How much time (in minutes) should the personnel manager allow the ...

**statistic**

Suppose a random sample of 25 students is selected from a community college where the scores in the final exam (out of 125 points) are normally distributed, with mean equal to 112 and standard deviation equal to 12. Find the probability that the sample mean deviates from the ...

**calculus**

f(x)=1-3x g(x)=5x^2+3x+2 find f(g) g(f) and f(f) and their domains.

**MATHS!!!!!!!!!!!!!!!!!!**

20 sec to fill ten-litre bucket with water 60 / 20 = 3 3 x 10 = 30 litres per hour ?

**History**

so is it really c? because i've been stuck on this question for about 20 minutes

**algebra**

given the function k described by k(x)=x+20 find each of the following k(0)= k(-12)= k(-9)= k(15)= k(y+1)=

**algebra**

f(x)=x+19

**math**

Which of the following shows the next step using the least common denominator to simplify 7/8-5/6?

**PHYSICS- Please Help :(**

A ball is thrown downwards at a velocity of 14m/s from a bridge. One second earlier a rock is dropped from the same bridge. a)When will the ball meet up with the rock. b)When will the ball meet up with the rock? c)What is the initial minimum speed by the ball in order to catch...

**Physics**

Car A passes a light post moving at 25m/s and continues at this speed. Two seconds later, another car passes the light post moving at 40m/s. Assuming no acceleration of either car. a)How much time will it take for the second car to catch up with the first car? b)How far from ...

**math**

Ruth sells cars. She receives a commission of 12% on sales up to $35,000 and a commission of %24 on sales over $35,000. What is Ruth's commission if she sold a car for $50,000?

**7th grade math worksheet**

AROBBERDUCKY

**Math/Fractions**

Tanisha has 2 new kittens. Together they weigh 3 5/8 pounds. If the male kitten weighs 5/8 pound more than the female kitten, how much does the male kitten weigh?

**chemistry**

Data collected from the calorimetry of a metal mass of the metal = 110.62g initial temperature of the water in the cup = 23.0 C initial temperature of the metal in the boiling water = 99.02 C final temperature of the metal AND water in the cup=25.54C volume of the water =100....

**Chemistry**

Well, Benedict's test detects reducing sugars (such as glucose). Benedict's reagent contains blue copper ions (Cu2+) which are reduced to copper (Cu+) in the presence of reducing sugars. These are precipitated as red copper(I) oxide which is insoluble in water. The ...

**4th grade math**

you multiply the bottom nunber

**college physics**

Two forces, of magnitudes F_1 = 80.0 N and F_2 = 25.0 N, act in opposite directions on a block, which sits atop a frictionless surface. Initially, the center of the block is at position x_i = -4.00 cm. At some later time, the block has moved to the right, and its center is at ...

**college physics**

Suppose that the coefficient of friction between your feet and the floor, while wearing socks, is 0.250. Knowing this, you decide to get a running start and then slide across the floor. If your speed is 3.00 m/s when you start to slide, what distance, d, will you slide before ...

**physics, plehase help**

The force of gravitation between two objects. Is 500 Newton's. What would the force of gravitation be if the distance between these two objects increased by 10 times?

**biology**

The continue to photosynthesize to have a spare storage of energy in case anything should happen. Like in humans for example humans store energy in ATP sacks. These bursts of extra energy are used when one is tired and so on.

**Chemistry**

im not getting an answer

**Chemistry**

An acid is comprised of 0.2g hydrogen, 7.1g chlorine and 12.8g oxygen. What is the most likely formula for this acid.

**chemistry**

Define the following concepts a. standard solution b. mole c. molar mass

**chemistry**

Define the term 'polymer' and then name two examples of naturally occurring polymers.

**Biology**

If pure-breeding tall plants are self-fertilized what kind of plants always grow from the seeds that are produced?

**8th grade history project**

Oh my gosh! I didn't think of that!!! thank you SO much for the idea!

**8th grade history project**

does anyone have any suggestions or words that apply to this area that i could try to work together?

**8th grade history project**

Haha, thank you; I was considering using that one if i couldn't find anything better. :)

**8th grade history project**

I am doing a history project on marketing inventions from the 1800s. I have to create a poster that includes a catchy slogan for a factory system. (remember that it is from the 1800s.) If you could help give me some ideas that would be great!!! thank you so much! If possible, ...

**8th grade history**

thank you, and sorry that it took me so long to reply, my computer froze up and wouldn't allow me to reboot it for a while. :) Once again, thank you!!!

**8th grade history**

I'm writing a research report on the very first stagecoaches. The information that I cannot find is: Who invented it who has improved it over the years how and where was it originally used If not used today, why is it not used, and what replaced it? Thank you SOOOOOO much ...

**civics (history)**

specifically what does 'incriminating' mean?

**civics (history)**

oh ok. well I think it implemented the 14th amendemnt by creating the 'miranda warning' where that you have the right to remain silent; that anything you say may be used as evidence against you and the right to know you have the right to an attourney. but i'm nnot ...

**civics (history)**

excuse me?

**civics (history)**

Miranda v. Arizona case how is the 14th amendment implicated in this case? how did the court go beyond its usual practice in coming to a decision?

**science**

I cant really locate it but these rivers are originat at the Appalachion Mountains.

**Math**

If m2 = m1*d1/d2 what is d1 and d2 when m1 is 50 and m2 is 84

**chemistry**

What is the chemical name for Salt Water

**math**

Evaluate the following. Remember to use the order of operations. 4-(-3) + 1 ______________ 2-2/(-2)

**HELP! pre-algebra**

THNX SO MUCH U ROCK!lol

**HELP! pre-algebra**

i have a word unscramble that i need help with i have to turn this word in unscrambled so this is the word scrambled: Seprororpit p.s. please relply asap thnx :]

**physics**

>.< ?

**math**

Write 8% as a fraction or a mixed number.

**Pre Algebra**

p.s it is supposed to be a algebra word

**Pre Algebra**

random question: i have a pre-algebra unscramble and i need help to unscramble the word the word they gave me was: Seproropit can any of u help me?

**Math**

A cyclist bikes x distance at 10 miles per hour and returns over the same path at 8 miles per hour. What is the cyclist’s average rate for the round trip in miles per hour?

**the big idea of energy**

omg wat is th ebig idea thing grat help

**the big idea of energy**

this is so hard i'm doin the iron and sulphur reaction and its do in tomorro and we got dis stupid teacher (tba)

**the big idea of energy**

omg!! lol i got da ear defenders hw now!! ive gt no idea ov wat 2 do!! HELP!!

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