# Posts by Jennifer

Total # Posts: 2,447

**Chemistry**

Draw the structure of the tripeptide “Asp-Ala-Ile” at pH = 1. Then determine the total charge of the tripeptide. The side chain of each amino acid is shown below in the form at pH = 7. (So when you use them to answer this question, you might need to modify the ...

**Math**

A general point on a curve is P(3+4costheta,2+4sintheta). Show that the locus of P is a circle and find the centre and radius

**US History UGGGH**

Based upon your own learning or my reasoning?

**US History UGGGH**

Sorry another question I am struggling with finding information in my text and on the web. Some things I am reading seem to be that the answer is d, all of the above. I know that Stalin wanted forces on the East front, but the Allies said it wasn't possible. Stalin also ...

**US History**

Yes, thank you!

**US History**

sorry I couldn't find any evidence of a, c or d

**US History**

6) One major trend that began during WWII and continued after was: a) The relocation of manufacturing and the defense industry to the west. b) The entry of women into the workforce. c) The use of women in combat roles. d) A decline in the number of union workers. I say that ...

**chemistry**

When a base is introduced into this buffer, which of H2CO3 and HCO3? reacts with the base to maintain the pH of the solution? HCO3? H2CO3

**Chemistry**

you have a solution of 0.1 m KCN and a solution of 0.1 m of HF what is the buffer?

**Chemistry**

WHAT ARE THE MAJOR SPECIES PRESENT IN A AQUEOUS SOLUTION OF 1.0M CH3C00H? I) CH3COOH II) H20 III) H30+ IV) CH3COO- VI) OH-

**chemistry**

An empty beaker weighs 39.17 g. a) When completely filled with water, the beaker and its contents have a total mass of 406.25 g. What volume does the beaker hold? Use d =1.00 g/mL as the density of water. for A i got 367.08 but I don't know for this b) How much would the ...

**CHEMISTRY**

*Consider a 0.15 m strontium chloride aqueous solution. a. Determine the molality (in m) of all solutes in the solution. Assume that strontium chloride completely ionizes when dissolved in water. All solutes means all cations and anions. The molality that you determine here is...

**chemistry**

THE QUESTION ASKS TO CALCULATE THE AMOUNT (IN GRAMS) OF CARBON DIOXIDE FROM THE AMOUNT OF SODIUM BICARBONATE THAT YOU USED IN THE REACTION Run 1. The reaction of citric acid and sodium bicarbonate is written as H3C6H5O7(aq) + 3 NaHCO3(aq) ? Na3C6H5O7(aq) + 3 H2O(l) + 3 CO2(g) ...

**Algebra**

9/4% of what is 9?

**CHEMISTRY**

Mg(s) + FeCl2(aq) ? MgCl2(aq) + Fe(s). IS THE IRON(II) ION OXIDIZED?

**CHEMISTRY**

2 C8H18 + 25 O2 ? 16 CO2 + 18 H2O. WHAT IS THE MOLE-TO-MOLE RATIO BETWEEN OXYGEN GAS AND WATER?

**Algebra**

A 29 horsepower lawn tractor sells for $1599.99 This is 12% more than the price of the same lawn tractor with a standard transmission. What is the price of the less expensive model?

**Chemistry**

N2(g) + 3 H2(g) ? 2 NH3(g) [balanced] If 5.42 g of nitrogen gas are reacted with 5.42 g of hydrogen gas, which of the reactants is the limiting reactant? Use the molar mass data below if necessary. Molar mass of N2 = 28.02 g/mol Molar mass of H2 = 2.02 g/mol Molar mass of NH3...

**chemistry**

N2(g) + 3 H2(g) ? 2 NH3(g) [balanced] If 5.42 g of nitrogen gas are reacted with 5.42 g of hydrogen gas, which of the reactants is the limiting reactant? Use the molar mass data below if necessary. Molar mass of N2 = 28.02 g/mol Molar mass of H2 = 2.02 g/mol Molar mass of NH3...

**Chemistry**

A sample of 10.7 g of O2 reacts completely with CO to form CO2. 2 CO + O2 ? 2 CO2. How many grams of CO is required.

**Algebra 2**

Find an equation of variation in which y varies inversely as x and the following is true: y=31, when x=4 Originally, I mixed up the equations of inverse and direct variation, and got 31=m(4) ----- b Obviously, I got it wrong, but I've gone ahead and redid the problem, and ...

**Algebra 2**

It takes 12 hours for 8 people to paint a house. How long will it take 3 people to do the job? I'm not really sure how to go about solving this problem.

**chemistry**

If there are 2.871mol of gas present at a temperature of 200.0K and a pressure of 1.009atm, what would the volume be?

**college math**

two cars are approaching an intersection one is 3 miles south of the intersection and is moving at a constant speed of 20 miles per hour. at the same time the other car is 4 miles east of the intersection and is moving at the constant speed of 30 miles per hour. a)express the ...

**college math**

a rectangular dog pen is to be constructed so that one side is against an existing stone wall and the other three sides are to be fenced. of 500 feet of fence is to be used, determine the dimensions and area of the pen with maximum area. I have no idea how to solve this problem.

**Science **

A geologists working in a national park finds a mineral he is carrying a kit that contains a penny, a hand lens, a piece of tile, a geologic hammer, and a jackknife. Describe how the geologists can use these items to determine some of the minerals characteristics.

**math**

Linda works 3 days per week at $6 per hour. If she works 4 hours per day how many weeks will it take Linda to earn $350?

**accounting**

Need advise in how to set up? On, April 1, 2015, Lester Company received a bank statement that showed a balance of $ 8,950. Lester showed a $8,000 checking account balance. The bank did not return check No. 115 for $750 or check No. 118 for $370.00. A $900.00 deposit made on ...

**accounting**

On, April 1, 2015, Lester Company received a bank statement that showed a balance of $ 8,950. Lester showed a $8,000 checking account balance. The bank did not return check No. 115 for $750 or check No. 118 for $370.00. A $900.00 deposit made on March 31 was in transit. The ...

**physical science**

in a tug of war the left team pulls with a force of 300N and the right team pulls with a force of 150N. what is the resultant force?

**Math**

Start at 5. Create a pattern that multiplies each number by 2. Stop when you have 4 numbers.

**History Please Help**

yea no one here helped. you gave him/her a wrong answer and never even gave a text to look to. The answer is capital not human resource. Just because it has enslaved people in the mix, doesn't mean it is human resource.

**physics**

A 2000-kg automobile with four-wheel drive and weight distributed equally on the four 60-cm diameter wheels can accelerate from 0 to 27 m/s (60 MPH) in 6 seconds. a. Calculate the minimum coefficient of static friction between the tires and the ground. (10 pts.) b. What torque...

**English**

How do themes drive the plot in a story or film?

**Albert**

x varies directly as the product of u and v and inversely as their sum.If x=3 when u=3 and v=1.

**Louisiana History**

Do you know the issues that governor Unzaga faced? There is not really a answer choice nor is this a question from school, but I was thinking about this and well if you could just give me a site to look at to find out that would be great... -Thanks Jennifer

**STATISTICS**

If is equal to 0.79, then is equal to ______.

**Math**

there are 12 horses in a horse show competition. the top three winning horses receive money. how many possible money winning orders are there for a competition with 12 horses ?

**algebra hrlp**

You know the perimeter of a square to be 8 meters. Find the length of one side. How do you set up the formula

**algebra g**

You know the perimeter of a square to be 8 meters. Find the length of one side. How do you set up the formula

**algebra**

What type of interval does the following inequality represent? −10 ≤ x < −6 is this an open, close or half open need help

**algebra**

If a number divided by −64 is increased by −74, the result is −71. is this correct y/-64 -74=-71

**Macroeconomics help!**

Consider the following simplified economy described by a Cobb-Douglas production function with three factors of production: “K” is physical capital (the number of machines), “L” is labor (the number of workers), and “H” is human capital (the ...

**algebra homework help**

student missed 11 problems on a Chemistry test and received a grade of 65%. If all the problems were of equal value, how many problems were on the test? Round off your answer to the nearest integer. X= # of problems 11= # of missed problems 65% of correct problems 35% of ...

**algebra**

DISREGARD this one

**algebra**

A student missed 11 problems on a Chemistry test and received a grade of 65%. If all the problems were of equal value, how many problems were on the test? Round off your answer to the nearest integer. X= # of problems 11= 3 of missed problems 65% of correct problems 35% of ...

**algebra homework help**

A student missed 3 problems on a Physics test and received a grade of 94%. If all the problems were of equal value, how many problems were on the test? Round off your answer to the nearest integer. my answer is 5 questions

**algebra homework help**

A student missed 8 problems on a Chemistry test and received a grade of 47%. If all the problems were of equal value, how many problems were on the test? Round off your answer to the nearest integer. My answer is 15 question were on the test is this correct

**algebra homework help**

Let z be the unknown number. −61 times the difference between a number and 56 is equal to the number plus −28 Is this correct: -61(z-56)=z-28

**algebra homework help**

Let y be the unknown number. The difference between a number and 11 is equal to the number times 8. Is this correct y-11=y(8)

**algebra homework help**

Let x be the unknown number. If a number divided by −42 is increased by −89, the result is −87. n/-42-89=-87 or is it n/-42+-89=-87

**algebra homework help**

n over-42 -89=-87

**algebra homework help**

Let x be the unknown number. If a number divided by −42 is increased by −89, the result is −87. 8/-42-89=-87

**algebra homework help**

The sum of two consecutive integers is 285 is 18 and 54 correct

**algebra homework help**

is 18 and 54 correct

**algebra homework help**

142.5 0r 143

**algebra homework help**

The sum of two consecutive integers is 285 How would I solve an equation like this

**algebra**

how would I solve for this L = 2πrh; solve for r.

**Social Studies**

analyze the impact of plant and animal domestication in neolithic societies in middle america

**algebra**

Need help in solving this To receive an A grade, a student must average 100 or less but more than 93. If Zane received an A in the course and had five grades of 95, 92, 98, 76, and 100 before taking the final exam, what were the possible grades for his final if there were 100 ...

**math**

club x charges a one time fee of $35 with an additional charge of $35 per month. Club y charges no initiation fee but charges $46 per month. Write an equation to represent the cost for x amount of moths for each club. x=35x+35 y=46x IS this correct?

**algebra**

Need help with this The area of a trapezoid is 240 cm2. The height is 20 cm and the length of one of the parallel sides is 10 cm. Find the length of the second parallel side

**algebra**

subtract

**algebra**

need help Jan is 5 inches shorter than her 72 inch tall mother. How tall is Jan in inches?

**algebra**

need help: When the price of a necklace was reduced by $132, the sale price was $1590. What was the original price of the necklace?

**algebra**

I do not understand

**algebra**

need help Marked at half price and less the dealer discount of $4.50, the CD cost $4.50. How much was the original price of the CD?

**algebra**

Need help with this The area of a trapezoid is 240 cm2. The height is 20 cm and the length of one of the parallel sides is 10 cm. Find the length of the second parallel side

**algebra**

how would you set this up Two sides of a triangle measure 11.4 cm and 16.2 cm. If the perimeter is 32.1 cm, what is the length of the third side in centimeters?

**Math**

Kevin has a rabbit a ferret a gerbil and a turtle. He feeds them in a different order each day. In how many different orders can Kevin feed his pets?

**Science**

What would the density of 8 g of the unknown substance from Zarkon be

**algebra**

13 + [26 ÷ (−6 + 4 ⋅ 1)] My answer is 26 is this correct4.

**Physical science**

A simple lever is used to lift a heavy load. When a 58-N force pushes one end of the lever down 1.1 m the load rises 0.14 m. How much work is done by the 58-N force? What is the gain in potential energy of the load? How does the work done compare to the increased potential ...

**algebra need help**

how would you solve something like this 2xy X 3y X -y ______________ 2xy X 3xy X x The X are multiplication MY answer is -y over x2y the 2 goes above the x

**algebra Need to make sure that my answer is correc**

−( 3x + 3 ) + 2( 2y + 2 ) = -3x + 3 + 4y + 4 = -1x + 4y +7 Is this the correct answer

**algebra homework help**

−( 3x + 3 ) + 2( 2y + 2 ) Answer is :-3x+7-4y

**algebra help needed**

the answer is 4x-14y

**algebra help needed**

5(x+y)-(x+y) 5X+15Y-X+Y answer 6x-15y Us this correct

**algebra**

−4( 2x + y ) − ( 4x + y ) -4z+4u-4x+y -8x-3y My answer is this correct

**a**

−4( 2x + y ) − ( 4x + y ) -4z+4u-4x+y -8x-3y

**ALGEBRA**

−4( 2x + y ) − ( 4x + y ) =4x+4y-4x-4y -8x-3y

**Math**

9. Find two numbers whose difference is 20 and one third of their sum is 40.

**algebra**

3x − y2 − 3 + 2y2 + 2x − 4 I have to combine like terms My answer is 5x+1y-7

**Math**

-12 in the form of a/b where a and b are integers

**Math**

3.50x + 5.25y =2(3.50x) 3.50x + 5.25y = 1,225.00 Use Elimination Method -3.50( 3.50x + 5.25y ) = -3.50(7) -12.25x - 18.375y = -24.5 3.50 + 5.25y = 1,225.00

**Math**

A hot dog cart at the entrance of the Stadium sells hot dogs ($3.50) and hamburger ($5.25) for a total of $1,225.00. If it sells twice as many hot dogs as hamburgers, how many of each did it sell?

**Physics**

Michael flies in an airplane due north to Michigan. The pilot encounters a direct crosswind from the west of 120 mph. What direction must the pilot steer in order to end up with a resultant of due north and average velocity of 120 mph? Measure and calculate the speed of the ...

**Math**

Tell whether the sequence 1/3,0,1,-2 is arithmetic, geometric, or neither. Find the next three terms of the sequence. A.neither;7,-20,61 B.geometric;7,-20,61 C.arithmetic;1/3,1 1/3,3 D.geometric;-3 1/3, 5 5/9,9 7/27

**Geometry**

Myles was asked to draw a triangle xyz and then dilate it using the origin aa the center of dilation and a scale factor of 0.75.he thinks adding 0.75 units to the coordinates of the vertices of xyz will help him draw the dilated image. Explain why miles is incorrect,and what ...

**Math**

At 5:00 in the evening, a man who was 71 inches tall cast a shadow that was 163 inches tall. At the same time a flagpole cast a 756 inches shadow. How tall was the flagpole? Express your answer in two decimal places.

**Math**

Yes Steve. Triangular base. She just said leg lengths of 12, a base of 9, and height of 23.

**Math**

Find the surface area of the right prism with the given features: A right triangle with legs of length 12 a base of length 9 and height equals 23.

**Math**

The path of a satellite orbiting the earth causes it to pass directly over two tracking stations A and B, which are 35 mi apart. When the satellite is on one side of the two stations, the angles of elevation at A and B are measured to be 87.0° and 84.2°, respectively...

**Pre-Cal (Help Plz)**

So what is ∠C2? I'm confused

**Pre-Cal**

Evalute the expressions: 1). sin(π/3)+cos(π/3) 2). (cos 45°)^2-(sin 45°)^2

**Pre-Cal**

A 13-ft ladder leans against a building so that the angle between the ground and the ladder is 63 degrees. How high does the ladder reach on the building? (round your answer to the nearest foot)

**Math: Inverse Function (Plz help)**

Find the Inverse function of f: f(x)=8+[square root of(8+x)] f^(-1)(x)=_______, x>8

**Math - surface area**

A land scape is preparing a circular flowerbed. The bed has a 12-foot diameter. He will need 13 plants per square yard. How many plants should he buy? Thank you.

**english**

(Pronoun Agreement Error) The cafeteria was in an uproar because every student was overcharged for their lunch. NEW SENTENCE: The cafeteria was in an uproar because students were overcharged for their lunches

**english**

3. (Pronoun Agreement Error) The cafeteria was in an uproar because every student was overcharged for their lunch. NEW SENTENCE: The cafeteria was in an uproar because students were overcharged for their lunches.