# Posts by aaron

Total # Posts: 563

**Chemistry **

Write the element symbol and charge for this monatomic ion: Consider a monatomic ion that has the electron configuration of [Kr]4d^10 5s^2 and a charge of 2+

**Chemistry**

Thank you!

**Chemistry**

-Calcium chloride contains calcium and chloride ions. Write the ground-state electron configuration for the calcium ion. -Write the ground-state electron configuration for the chloride ion.

**Math**

Julio purchased some power tools totaling $2,174 using a six-month deferred payment plan with an interest rate of 28.19%. He did not make any payments during the deferment period. What will the total cost of the power tools be if he must pay them off the power tools within the...

**Geometry**

There are three points on a line, A, B, and C, so that AB = 12 cm, BC = 13.5 cm. Find the length of the segment AC . Give all possible answers.

**Math**

Show how to make one addend the next tens number. 15+37=?

**Physics**

In an electric freezer, 400.0 g of water at 18.0 degree C is cooled, frozen, and the ice is chilled to -5.00 degree C. How much total heat was removed from the water

**Verbal**

Claudia is orginising a fashion show .Jamie,Alice,Susie and Lao are modelling the outfits.Each wears 4 different outfits. All of lao's outfits are pink.Half of Alice's outfits are pink and the rest are red.One of Jamie's outfits is red and the others are blue.Susie...

**Physics**

1225 watts

**Physics**

A weightlifter raises a barbell of mass 150 kg from the floor to over his head 2.5 meters in 3 seconds. What is his average power input?

**Science **

Hello, can anyone help me answer this question: What is the result of a silent mutation at a) DNA level b) amino acid level c) protein level d) phenotype level Thank you.

**algebra**

describe the transformation done by y=1/x to get y = 1/4x -12

**Algebra**

Determine the holes, vertical asymptotes and horizontal asymptotes of the rational function y=(3x^(2)+8x-10)/(x^(2)+7x+12) Hole: Vertical Asymptote: Horizontal Asymptote:

**Algebra**

b) y = 3(.25)^x growth or decay y-intercept:

**Algebra**

Determine whether each function is an example of exponential growth or decay. Then find the y-intercept. a) y = 2(4)^x growth or decay y-intercept: b) y = 3(.25)^x growth or decay y-intercept:

**algebra**

The length of a rectangle is 2 1/2 times the width, and the perimeter is 42 feet. What are the dimensions of this rectangle?

**algebra**

The ratio of Natalie’s markers to Susan’s markers was 5:3 at first. After Natalie gave 25 markers to Susan, they had an equal amount of markers each. How many markers did they have altogether?

**Algebra**

1. Find all the real square roots of a. .0064 b. - .0081

**Algebra**

1. Find all the real square roots of a. .0064 b. - .0081

**Algebra**

Rewrite 32^3/5 as a radical expression and then simplify.

**chemistry**

A student dissolves a .726 g aspirin tablet in water and titrates the solution with .272 M NaOH are required to reach the equivalence point. Calculate the percentage of acetylsaliclic acid in the tablet. I am not really sure where to start with this. I unfamiliar with problems...

**Biology**

What amino acid property makes proteins highly functional? I would assume it would be the structure and sequence, but are there additional properties?

**Introduction to small engines**

The distance the piston must travel from TDC to BDC is referred to as the of the engine

**chemistry**

Create balanced equation, given the two compounds in aqueous solution may react with one another. State whether or not a chemical reaction occurs. Make sure to include the state of each reactant and product. If a precipitation reaction occurs, provide the ionic and net ionic ...

**Computing**

Sorry I mean't computing not c. Would the answer be a pdf? Thanks

**C**

Most organisations produce a document stating what they expect their members to do to behave in an ethical way. State the name of these documents... Thank you.

**Science**

The (blank) has given scientists information about past life on Earth.

**Pre Cal 12**

A 12cm by 8cm rectangular piece of metal is to be made into an open-top box by cutting a sqaure from corner and folding up the resulting flaps (sides). If the volume of the lidless box is 36 cm what are the integer dimensions of the box?

**Maths**

Grace spent 1/8of her money on popcorn and 1/4 of her money on a drink. 1.IF THE drink cost€1.32,how much money had she altogether 2.what fraction of her money did she spend? 3.how much money had she left?

**Math**

is x^2-3x+28 factorable

**algebra**

The perimeter of a square is to be at least 15 feet, but not more that 52 feet. Find all possible values for the length of its sides.

**Algebra**

What is the equation, in standard form, of a parabola that models the values in the table x (-2,0,4) F(x) (2.5,1.5,-60.5)

**social studies**

Compare the situation in Burundi to the American Revolution

**Algebra**

Can someone help me with these two equations, I need to solve them by completing the square, I know the answers, (Number 1 is -11.56, 1.56, and number 2 is -10.35, 1.35) I just can’t remember how to get those numbers again, I have so much math on my paper I am confused. :...

**Algebra**

A conic section has the equation x2 + y2 + 10x + 8y = 40. Determine the following: type of conic, domain and range, axes of symmetry, and center. Show your work.

**Algebra**

Identify the type of conic section that has the equation 9x^2+ 25y^2 =225 and identify its domain and range.

**Algebra**

the foci of the ellipse given by the equation 100x2 + 25y2 = 2500?

**math**

For an 18 month period, the last term is and the series sum is . For a 24 month period, the last term is and the series sum is . For a 30 month period, the last term is and the series sum is .

**biology**

stem cells

**None**

If there's three there's two If there's two there's one If there's one there's none. What's the answer?

**Algebra**

The equation h = -16t^2 + 32t + 9 gives the height of a ball, h, in feet above the ground, at t seconds after the ball is thrown upward. How many seconds after the ball is thrown will it reach its maximum height? What is its maximum height?

**Math**

A hardware store makes a mixed bag of 42 items using screws, bolts, and washers. The cost of screws are $3.00 each, bolts cost $2.00 each, and washers are $1.50 each. The mixture calls for four times as many screws than bolts. The total cost of the mixture is $102.00. How much...

**Math**

What point maximizes the objective function P = 4x + 3y for the constraints below. What is the maximum value? Constraints: x>=0 y>=0 y<=1/3x-4 6>=y

**PLEASE HELP HISTORY**

all are right but 1. the one after the only two DDs is C not B

**Physics**

Figure shows a circular wire loop of radius r carrying current i placed in a perpendicular magnetic field B. Suppose that the radius of cross section of the wire is a. Find the decrease in radius of loop when magnetic field is switched off if Young’s modulus is Y.

**Algebra**

12. Determine whether y varies directly with x. If so, find the constant of variation and write the function rule. x - 1, 2, 5 y - 1, 2, 5

**Algebra**

graph the inequality y<-|x - 5|

**Algebra**

8. Write an equation for a trend line and predict the value when x is 15. x 0 3 6 9 12 y 17.5 35.4 50,5 60.6 66.3

**Algebra**

7. Write the equation of a trend line. Number of hours 8 5 12 10 2 9 11 14 Score% 7562 80 85 35 70 82 95

**Math**

an oak tree casts a shadow that is 5 meters long. at the same time, a 6.2-meter-tall flagpole casts a shadow 4 meters long. how tall is the tree?

**Chemistry**

One isotope of a metallic element has mass number 10 and has 7 neutrons in the nucleus. It forms an atomic ion having 2 electrons. Enter the symbol for this ion

**Goverment**

Oh and btw the answers A. XD

**Goverment**

Which of the following was one compromise related to the Declaration of Independence that was agreed to by the delegates to the second continental congress? Language condemning the slave trade was removed Language criticizing the English people was strengthened A list of ...

**Chemistry**

Describe how lead(II) iodide cen be prepared in the laboratory

**physics**

Michael, whose mass is 80 kg, runs at a speed of 3 m/s. What is his kinetic energy?

**Model Essays**

To analyze it for me following Visser's example

**Model Essays**

All of us have probably experienced a particular moment (or perhaps many moments) when we were willing to dine out on anything but fast food. What do you think we are seeking at such times? Following Visser's example, write an essay analyzing the "culture" of a ...

**Math**

What is the difference between 20 hundreds and 3 x 10 to the 2nd power

**Math**

How much more is 245,612 than the combined numbers of 18,912 and 45,608

**Math**

I am a number between 1000000 and 2000000. My ones digit is the sum of my tens and hundreds digits and is also the sum of my millions and ten thousands digits.my hundred thousands, thousands, and ones digits are the same.the sum of my digits is 45.what number am i?

**Math**

I am a number between 1000000 and 2000000. My ones digit is the sum of my tens and hundreds digits and is also the sum of my millions and ten thousands digits.my hundred thousands, thousands, and ones digits are the same.the sum of my digits is 45.what number am i?

**Finance**

Mrs. Rogers wants to take a trip in ten years, she can save 650 every 3 months and earns 7.8% compounded quarterly. How much is her account worth at 5 years? What formula should I be using for this? None of them I have tried seem to give me near the correct answer.

**Geography**

Islanders living in Beqa, Fiji lived primarily by hunting and eating meat by fishing and cultivating tara (my answer) by gathering nuts for exports by eating plants

**TRIGONOMETRY2**

color each point in the coordinate plane either red or blue. prove that no matter how the coloring is done there must exist two points of distance one that are the same color.

**TRIGONOMETRY**

given real numbers x, a, b with x>= a>= b>= 0, show that sqrt x+b - sqrt x-a >= sqrt x+a - sqrt x-b

**trig3**

color each point in the coordinate plane either red or blue. prove that no matter how the coloring is done there must exist two points of distance one that are the same color.

**trig2**

given real numbers x, a, b with x>= a>= b>= 0, show that sqrt x+b - sqrt x-a >= sqrt x+a - sqrt x-b

**trig**

tan(theta)/tan(2theta)-tan(theta)= cos(2theta)

**Biology**

Do you expect that somatic cell gene therapy and germ-line gene therapy for the same disease will be equally difficult?

**maths**

409 726 IN STANDARD EXPANDED NOTATION

**math**

The mean of 14 numbers is 50. Removing one of the numbers causes the mean to decrease to 43. What number was removed?

**math**

For a popular Broadway musical, the theater box office sold 356 tickets at $80 apiece, 275 tickets at $60 apiece, and 369 tickets at $45 apiece. How much money did the box office take in? A. $16,605 B. $44,980 C. $61,585 D. $16,500

**Chemistry**

An interference filter is to be constructed for isolation of the nitrobenzene absorption band at 1537 cm-1. (a) If it is to be based on first-order interference, what should be the thickness of the dielectric layer (refractive index of 1.34)? (b) What other wavelengths would ...

**chemistry**

For the reaction N2(g) + 3H2(g) 2NH3(g), what will happen if more ammonia gas is added?

**Math**

Yipee, thanks!

**Math**

Can someone help me complete this table? a - 5, 6, 7, 8, 9 b - 3.8, 4.6, 5.4, _, _ So, do you add 0.8 each time? I think the next two numbers are 6.2 and 7.0.

**math**

Can someone help me complete this table? a - 5, 6, 7, 8, 9 b - 3.8, 4.6, 5.4, _, _ I don't have any answers. I'm sorry. Is there a rule?

**physics**

a side view of a car tire before it is mounted on a wheel. Model it as having two sidewalls of uniform thickness 0.695 cm and a tread wall of uniform thickness 2.50 cm and width 23.2 cm. Assume the rubber has a uniform density 1.10 103 kg/m3. Find its moment of inertia about ...

**Chemistry**

How many g of CaCl2 are required to prepare 0.250 L of a 0.200 M solution?

**Social Studies**

Hey "Anon" you did a great job and yes you did answer correctly! ~Aaron Stern

**Math**

Samantha wants to find the height of a pine tree in her yard. She measures the height of the mailbox at 3 feet and its shadow at 4.8 feet. Then she measures the shadow of the tree at 56 feet. How tall is the tree?

**Math fractions**

A rectangle picture frame is made of wood stripes that are 3/4 inches wide the outside edge of the frame is 8 1/4 inches long and 6 3/4 inches wide can a rectangle picture that is 7 inches long and 5 1/2 inches wide fit inside the frame?

**physics**

A cat is chasing a mouse. The mouse runs in a straight line at a speed of 2.2 m/s. If the cat leaps off the floor at a 29° angle and a speed of 4.0 m/s, at what distance behind the mouse should the cat leap in order to land on the poor mouse?

**Chemistry**

Someone please help me, they're just practice questions but I need some help Hydrogen peroxide, H O , is used to disinfect contact lenses. What volume of O , in mL, of O (g) at 36°C and 741 mmHg can be liberated from 50.0 mL of an aqueous solution containing 3.00% H O ...

**Chemistry**

Now, my problem with this question is the break-down, I don't know where to start. Calculate the volume of H (g), measured at 21.9°C and 769 Torr required to react with 36.3 L CO(g), also measured at 21.9°C and 769 Torr. Assume the gases react as follows. 3CO(g) + ...

**Algebra 2**

Brandon is a retard for being in Statistics.... its 10*8C2*13

**chemistry**

0.0489 L

**algebra 2**

so in elimination you always add first, then subtract the for the next equation? thank you, Aaron

**algebra 2**

3x+y+z=14 -x+2y-3z=-9 5x-y+5z=30 linear equations solve by elimination

**math**

What are the important variables in the problem below? A test is worth 50 points. Multiple-choice questions are worth 1 point, and short-answer questions are worth 3 points. If the test has 20 questions, how many multiple-choice questions are there?

**science**

Describe how you would find the mass of 250mL of water

**Technology**

no they will need Microsoft powerpoint software to view the slides you have made

**chemistry HELP!!**

Reaction Rate = -(1/2) [d(H2O2)/dt] = [d(O2)/ dt] Using 25 mL of a 0.2 M hydrogen peroxide solution, the following results are obtained from the equation above: 8.62 mL of gas is collected in 120 seconds. (Assume 760 Torr = 1 atm) Room temperature is 25 degrees C and the vapor...

**Math**

On December 10, 2014, Jennings, Inc. paid out total dividends of $450,000 (this was the only dividend payment made during the year). If Jennings reported Retained earnings of $2,186,000 for 2013 and Retained earnings of $2,380,000 for 2014, what was Jennings reported net ...

**algebra**

An executive drove from home at an average speed of 45 mph to an airport where a helicopter was waiting. The executive boarded the helicopter and flew to the corporate offices at an average speed of 120 mph. The entire distance was 250 miles; the entire trip took three hours. ...

**Computer**

Katie typed a paper using Microsoft Word. Microsoft Word is a type of software.

**Math**

A bag held 3 red marbles, 1 blue marble, and 4 yellow marbles. Lee drew a red marble and did not replace it. What is the probability of drawing a yellow marble next? A. 1/4 B. 1/3 C. 1/2 D. 4/7

**life orintation**

TOPIC:campaign with responsibility CRITICAL FOR MARKS (A)introduction (3marks) (B) description of recent service delivery protest (5marks ) (C)research on processes of campaigns and protests (20 marks) (D)evaluation of current protests (20marks) (E) interview questions (...

**Technology in the classroom**

Microsoft Office

**algebra**

A package is dropped from a helicopter at 1600 feet. The height of the package can be modeled by: h = -16t squared + 1600 , where h is the height of the package in feet and t is the time in seconds. How long will it take for the package to hit the ground?