# Posts by Sophia

Total # Posts: 266

**math**

how did you get b= 28000

**math**

The value of a car decreases at a constant rate as it grows older. When the car is 2 years old, it is worth $23,000. When the car is 5 years old it is worth $15,500. Write and equation relating y (value of the car $) to x (age of car). Is it y-23,000=-2500(2)-5 ??

**5th grade**

matt ran 1/5 mile less on monday than on tuesday. he ran 1/2 mile less on wednesday than he did on monday. he ran 7/10 mile more on friday than on wednesday. if matt ran 4/5 mile on friday, how far did he run on tuesday? stumped, please help!

**math**

What are the slope and y-intercept of the graph of the following equation? 1/3x=1/2(y+4) So I used slope intercept formula and rearranged it to be 1/2y=-1/3x+2 then I isolated y by multiplying by the reciprocal and got y=-2/3x+4 is that right?? My friend said its +4!

**6th grade Reading**

I don't know too BYE BYE BYE BYE BYE 2009 PERSON BYE BYE

**math**

so murder perentage is .94% and 3.4 degree of the circle. So when doing the pie graph I put the percentage on the pie graph?

**math**

alcohol 13% Car Acc. 19% suicides 25% Tobacco 300% Are these right?

**math**

is this correct for murders? (510/54120)*360=3.4

**math**

I have to put these estimates on a circle graph. These are estimated deaths in canada in 1996. Do I add them all up first then divide them by the answer? murders 510 alchcol 1900 car accidents 2900 suicides-3900 Tobacco 45,000

**statistics**

A Survey.

**World History**

List two ways the Atlantic Slave trade affected Africa.

**social studies**

how do you calculate for the local time in Cairo, Beijing, Sydney, Washington DC, thailand, los angeles, new delhi,vancouver and moscow if the data given is London(GMT) 5:00pm monday.

**music**

what is meter in music and what are the kinds of meter?

**Biology**

Good afternoon, Could you help me find environmental factors that would influence biodiversity. Thanks for your time.

**To Sophia**

I apologize, i only posted my question once. I think something was wrong with my computer. No, i did not do this before, this is the first time i've used this site. Sophia.

**Biology**

Hi, Could you help me find information on at least 5 organizations or efforts on how humans are trying to combat the loss of biodiversity. Thanks.

**3rd grade/math**

i got 100 % in maths

**4th grade**

How does a solar greenhouse work?

**Science**

What is a solar greenhouse?

**Career Information Answer**

A television repair man is somebody who... Gets The Picture A taxidermist is somebody who... Can save your hide A tree surgeon is somebody who... Will go out on a limb I hop this helped you! :)

**Career Information**

Stuck on career information...

**physics**

The time is 14.3s, btw..

**physics**

An airplane traveling 1001 m above the ocean at 125km/h is going to drop a box of supplies to shipwrecked victims below. What is the horizontal distance between the plane and the victims when the box is dropped?

**physics**

A pitched ball is hit by a batter at a 45-degree angle and just clears the outfield fence, 98 m away. If the fence is at the same height as the pitch, find the velocity of the ball when it left the bat. Ignore air resistance.

**4th grade social studies**

they got freedom

**Business systems**

Biases may play a major role in the success/failure of an IT project because most IT projects are connected in someway with making the technology more user friendly. The users of these projects are becoming more diverse in reference to age, race, sexual orientation, etc. ...

**Algebra**

What is the domain of f(t)=5.5e^t Please explain how you came up with your answer

**Algebra**

Can someone please tell me what the domain of the following equation is? Please explain how you got that answer. g(x)=5^x

**English**

Yes. It is the same statement.

**science**

Both of these thermometers were designed to rise and fall as they expand or contract with changes in temperature. One major difference is that alcohol thermometers will only rise when on site with the temperature to be read, where as a mercury thermometer needs to be shaken if...

**Algebra**

Please state the DOMAIN of the following, and explain how you obtained that answer please. g(x)=5^x

**AP Chem**

How did you get #34?

**Math riddle PIZZAZZ Worksheet**

What happened to the grocer who stacked all of the liquid detergent no the high shelf? plzzz help

**Spelling**

dog cat

**7th grade**

how do you write an equation for the number of gallons in 128 fluid ounces?

**Algebra**

and if the problem had been: 21a-3 ------ 7a-6 then it would be: 3a-1 ----- a-2

**physics**

An ideal gas at 18.5°C and a pressure of 1.54 105 Pa occupies a volume of 2.10 m3. (a) How many moles of gas are present? moles (b) If the volume is raised to 5.30 m3 and the temperature raised to 31.0°C, what will be the pressure of the gas? Pa

**physics**

A mass of 135 g of an element is known to contain 30.1 1023 atoms. What is the element? hydrogen oxyden aluminum carbon Is it aluminum?

**SCIENCE**

PISTILS AND STAMENS REACH MATURITY AT DIFFERENT TIMES, WHY WOULD THIS BE AN ADVANTAGE TO THE PLANT?

**us history**

when fdr served 4 terms, which president's record did he break?

**Math**

4x + 10 -3x =2-3

**Chemistry**

The solubility of CaCO3 at 25 degrees celsius is 6.90*10-5M. The reaction is CaCO3(s)-->Ca 2+(aq) + CO3 2-(aq) <-- a. Calculate the concentration of Ca +2 and CO3 -2 at equilibrium. b. Calculate the equilibrium constant for the dissolution reaction. (also known as the ...

**college math**

how to do set notation, for example

**social studies**

How did Alexander the Great unite Persian and greek cultures and why?

**statistics**

oops

**statistics**

Given the ensuing well drilling data, answer the following. [Reference: #4.78, page 172] • .30 (30%) probability of a productive well absent test information • Pre-drilling ballistics test ‘s affirmative result correctly predicts a productive well .70 of the ...

**statistics**

Given a distribution with mean X and standard deviation S, answer the following. 4.1 Determine the mean and standard deviation if constant K is added to each observation 4.2 Determine the mean and standard deviation if constant K is multiplied by each observation 4.3 Assuming ...

**statistics**

oops, thank you drwls

**statistics**

Given the ensuing well drilling data, answer the following. • .30 (30%) probability of a productive well absent test information • Pre-drilling ballistics test ‘s affirmative result correctly predicts a productive well .70 of the time • Pre-drilling ...

**statistics**

Compute the expected return if two mega lottery tickets are sold for $6, if the winning ticket is drawn from five (5) million tickets sold, and if the winner receives $10 million.

**statistics**

3. Prove (not show) that following two methods, long and short respectively, to compute the population variance yield the same result. ? (x i - ?) 2 / n, where i = 1, n ? (x i 2 - (? x i) 2) / n, where i = 1, n

**algebra**

a times a number - 5 = b so, add 5 to both sides ax-5 = b +5 +5 so now you have ax = b+5 divide both by x and you get a so ... a=(b+5)/x

**algebra**

if you add 2t + 1 =3 so 3-1=2 so 2 times what equals 2. not -1 because that would equal negative 2. its 1 because 2 times 1 is 2 plus 1 is three.

**math**

how would i multiply 365/365 x 364/365 x 363/365...all the way to 326/365 using excel or the ti-83 calculator without having to input all those numbers. please help. thanks.

**Statistics**

A manufacturer makes two models of an item: model I, which accounts for 80% of unit sales, and model II, which accounts for 20% of unit sales. Because of defects, the manufacturer has to replace (or exchange) 10% of its model I and 18% of its model II. If a model is selected ...

**math**

How many hours of jogging at 5 1/2 mi/h would be needed for a 200-lb person to lose 5 pounds? (Assume calorie consumption is just enough to maintain weight, with no activity)

**human biology**

if a cell lacks ATP, which of the following processes would cease to operate immediately? diffusion Na+/K= pump facilitated diffusion osmosis or passive transport http://www.brookscole.com/chemistry_d/templates/student_resources/shared_resources/animations/ion_pump/ionpump....

**human biology**

if a cell lacks ATP, which of the following processes would cease to operate immediately? diffusion Na+/K= pump facilitated diffusion osmosis or passive transport

**human biology**

which of these characterisitics apply to exocytosis? requirese energy, requires, carrier proteins, requires channel proteins and/or requires vesicles. Thanks. Since this is not my area of expertise, I searched Google under the key words "exocytosis" to get these ...

**human biology**

I hope someone can help me answer this queestion: which of the following does NOT involve the sharing of electrons? H20, HCl, NaCl, H2 or C6, H12, O6 and why? The last three compounds you listed do not exist. Among the others, NaCl does not share electrons; the Cl completely ...

**human biology**

does DNA serve as a template for just DNA or mRNA as well? Go here: http://www.stanford.edu/group/hopes/treatmts/pbuildup/h2.html and scroll down to: How can RNAi be used to treat HD?

**math ( subtracting fractions)**

12 1/4- 4 1/8 When you add or subtract fractions, you have to have the same denominator. In this problem you have to change 1/4 to 2/8. Then subtract the fraction and then subtract the whole number. Please post your answer and we'll be glad to check it.

**Survey for history..**

fyi it is hieroglyphs and not hieroglyphics.

**Survey for history..**

thankz 4 the help. i can't find where the bookof the dead/ hieroglyphics fits. there is only one spot for 13 letters.

**GOVERNMENT**

Obviously the government feels that a mere citizen do have the ability to vote for a president.

**PE Basketball**

what is the range of fitness required for effective performance in a game of basketball?