# Posts by cristian

Total # Posts: 58

**English**

first person

**Language Art**

sure did

**math**

Keisha invested her savings in two investment funds. The $4000 that she invested in Fund A returned a 10% profit. The amount that she invested in Fund B returned a 3% profit. How much did she invest in Fund B, if both funds together returned a 7% profit?

**Physics**

Jogger A, with a mass of 55kg, is traveling 6.00m at 3.45 m/s in the positive x-direction. Jogger B, with a mass of 62kg, is traveling 3.00m at 4.23 m/s in the positive x-direction. Jogger C, with a mass of 72kg, is traveling 5.00m in the negative x-direction at 4.75 m/s . ...

**algebra**

The area is 16 because 4x+6=16

**algebra**

The area is 16

**L.Arts**

Please I need to get a good score so my grades can go up a little more

**Chemistry**

The response written by DrBob is correct. Using a substitution method with the y=1.0318x, substitute the y in the original formula for 1.0318x, and solve. Keep in mind that you must set z=63.5463 (or just 63.55), otherwise you cannot hope to solve for the abundance of Cu-63.

**Statistics**

thank you!

**Statistics**

so would it be true?

**Statistics**

True or False: For ANOVA you will reject the null hypothesis is the variability within a sample is greater than the variability among samples?

**Algebra NEED HELP ASAP!!!!!!**

thank you very much i appreciate it

**Algebra NEED HELP ASAP!!!!!!**

need help!!!!!!!!

**Algebra NEED HELP ASAP!!!!!!**

The temperature outside was 72 degrees at 6 am. The temperature rose 4 degrees per hour for the next 12 hours. The total temperature is a function of the number of hours the temperature rose. What was the temperature at noon? (write the equation as a function)

**Algebra 1**

The temperature outside was 72 degrees at 6 am. The temperature rose 4 degrees per hour for the next 12 hours. The total temperature is a function of the number of hours the temperature rose. What was the temperature at noon? (write the equation as a function)

**Algebra 1**

The temperature outside was 72 degrees at 6 am. The temperature rose 4 degrees per hour for the next 12 hours. The total temperature is a function of the number of hours the temperature rose. What are the independent variable and dependent variable

**Algebra 1**

thank u

**Algebra 1**

The temperature outside was 72 degrees at 6 am. The temperature rose 4 degrees per hour for the next 12 hours. The total temperature is a function of the number of hours the temperature rose. What was the temperature at noon? (also write an equation)

**Algebra (math)**

The temperature outside was 72 degrees at 6 am. The temperature rose 4 degrees per hour for the next 12 hours. The total temperature is a function of the number of hours the temperature rose. What was the temperature at noon?

**biology**

is trypsin inhibitor competitive or noncompetitive

**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 on the surface of ...

**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 on the surface of ...

**Biology**

When making comparison of sequences where some are whole genome sequences while others are partial genome sequences, or a specific glycoprotein sequence, How is it that we are able to make comparisons from these sequences if they all have different lengths?

**Physics**

A rock is dropped from a height of 100 meters above the ground. One second later, a ball is thrown vertically downwards, from the same height, with an initial speed of 13 m/s. How long after the ball is thrown will the two objects be at the same location above the ground?

**Physics**

A rock is dropped from a height of 100 meters above the ground. One second later, a ball is thrown vertically downwards, from the same height, with an initial speed of 13 m/s. How long after the ball is thrown will the two objects be at the same location above the ground?

**Chemistry**

How much 5M KOH must be added to 1.0 L of 0.1M glycine (pKa 9.6) at pH 9.0 to bring its pH to exactly 10.0?

**physics**

When two objects move uniformly toward each other, they get 3.0 m closer each second, and when they move uniformly in the same direction with their original speeds, they get 1.0 m closer each 17 seconds. What is the speed (in meters/second) of the faster moving object?

**Chemistry**

N2O5 + H2O ---> 2HNO3 The reaction is first order in each reactant. Write the rate law for the reaction my guess rate= k[N2O5]^1[H2O]^1

**Chemistry**

a 110 g solid sample that is a mixture of CaCO3 and CaCl2 is reacted with 1.50 L of 1.45M HCl. Of the calcium salts, only calcium carbonate reacts with HCl- the reaction forms CaCl2 and CO2. The excess/unreacted HCl requires 0.850 L of 0.543 M NaOH to titrate it to the ...

**chemistry**

Thanks!

**chemistry**

Suppose a car's motor draws 231 Ampere of current for 6.3 sec to start the car. What mass of Pb is oxidized in the lead-acid battery to supply this much electricity?

**Physics**

A figure shows a section of a long tube that narrows near its open end to a diameter of 1.0 mm. Water at 20 degrees celsius flows out of the open end at 0.020 L/s. What is the gauge pressure at point P, where the diameter is 4.0 mm?

**Chemistry**

Molar concentrations: H+= .1M H2A= .100M MB+= 2.00X10^-4

**Chemistry**

How would you determine the concentration of H+, H2A and MB+ in a solution containing volumes of: H+ 600 microliters H2A 500 microliters MB+ 100 microliters H20 800 microliters

**Chemistry**

What determines whether or not the majority of acid is in the protonated form in solution? How does this incorporate both the pH of the solution and the pka of the acid?

**Chemistry**

why would a molecule change color under acidic or basic conditions?

**Chemistry**

Which of the following will buffer near pH=9? a. 0.5M sodiumacetate/0.5M acetic acid b. 0.5M ammonium chloride/0.5M ammonia c. 0.5M sodium dihydrogen phosphate/0.5M hydrogen phosphate i think a) 0.5M sodiumacetate/0.5M acetic acid will buffer near pH=9

**Chemistry**

Which of these methods is a better representation of the error in a chemical experiment: propagation of error or standard deviation and why? I think it would be standard deviation

**college chemistry**

In the derivation of this expression: [ln]/[HIn]A# 2 * A#1,acid/A# 2,basic * A#1 We assumed that the HIn form of the indicator is the only form present in the most acidic solution. Is this a valid assumption? Why or why not? Support your answer by determining the ...

**Chemistry**

In the derivation of this expression: [ln]/[HIn]A# 2 * A#1,acid/A# 2,basic * A#1 We assumed that the HIn form of the indicator is the only form present in the most acidic solution. Is this a valid assumption? Why or why not? Support your answer by determining the ...

**Chemistry**

how would you prepare 500 ml of .2M solution starting with solid NaH2PO4*H20?

**biologia**

que nombre recibe el sonido que emiten los murciÃ©lagos

**math**

y-2= -1/2 (x-4)

**Grammar**

Goon' someplace special" voc. I need please,, unscramble the words Osmentsona Cteors Idtiaiicnmsorn Nceotifdn Gneatrioesg

**history project**

That's me too, right? XD

**history project**

Ms. Sue are you a real-life teacher?c:

**history project**

Immigration is when a person (immigrant) moves from their home country to another country in hopes of pursuing a better life.(:

**math**

When the problem has the words "about" or "round" or anything relatively close to that in it, I think that's a good time to estimate. Otherwise, use exact numbers, (:

**social studies**

I think so and wouldn't this be in "Biology"?

**Thomas Pullen**

37! :D

**algebra**

Lol jk. I don't know the answer..I don't feel like doing math..D:

**algebra**

I know the answer but you don't...suck that!(:

**9th grade physics**

A sled of mass 50 kg is pulled along a snow-covered, flat surface with a force of 200 N. the friction force acting on the sled is 49 N. what is the acceleration?

**physic**

if a ballon gets launched at 60mi/hr at an angle of 38 degrees. How far will it travel in meters?

**geometry**

i need example of isometric drawing

**unit rate**

$60over 5 lessons divide by one in5 lessons

**Algebra**

x-4y=-3 2x+8y=-9

**Physics**

Mass Does not need to be used.