# Posts by Kim

Total # Posts: 2,630

**Science 8**

I do im in 6thgrade

**Chemistry**

12.903

**Chemistry**

and NH4H2PO4 thanks DrBob22

**Chemistry**

Write the formulas of the compounds formed by NH4+ with the following anions: CN-, ClO3-, SO42-, H2PO4-

**physics**

Calculate the Specific Gravity of an object that sinks in water if m = 21.97 g and mA = 17.40 g.

**phyics**

Calculate the specific gravity of a liquid given the following information: m = 59.30 g, mA = 33.78 g, mL = 43.60 g.

**Pre-calculus**

Initially 600 milligrams of a radioactive substance was present. After 7 hours the mass had decreased by 3%. Construct an exponential model A(t) = A0ekt for the amount remaining of the decaying substance after t hours. Find the amount remaining after 24 hours.

**Statistics**

The ratio of brown M&M’s in a bag is stated by the candy company to be 56%. If a random sample of 500 bags is selected, determine the probability that the sample proportion of random bags of M&M’s selected has a percentage of brown between 51% and 59% p=.56 standard ...

**Chem**

The solubility of calcium sulfate is1.90g of caso4 per liter of aquences solution at 25c. The formula weight of caso4 is 136.11 calculate the solubility product of caso4.

**physics**

If a standing wave with 10 antinodes occurs at a frequency of 44.1 Hz, at what frequency would you look for the n = 2 standing wave?

**physics**

If a standing wave with 10 antinodes occurs at a frequency of 44.1 Hz, at what frequency would you look for the n = 2 standing

**physics**

You take a set of measurements for the wavelengths and frequencies of standing waves on a string that is under a tension of 2.20 N. You use your data to create a plot of wavelength (in m) vs inverse frequency (in s) and the linear fit of your graph gives a slope of 19.0. What ...

**mATH**

Mr. Adams said that 10 more than 7 times his age is 9 years fewer than 5 times his age with the digits reversed. How old is Mr. Adams?

**Math**

If a triangl if a triangle triangle has a perimeter of three units with a row of two connecting triangles the parameters for units what is the perimeter of a row of Tronic 20 triangles triangles

**math**

moniques family was very impressed with their waitress. the cost of their dinner was $85. They want to leave 20% tip. how much should they leave?

**algebra 1**

rene needs to determine the equation of a line passing through the point (-1,7) that is parallel to y=-3x-4 a. y=-3x+7 b. y=-3x+4 c. y=3x-7 d. y=3x-4

**Math**

So it is the 2 that is in the thousandths place. To Ms. Sue

**Math**

Sorry the number is 0.8923 which digit is in the thousandths place? I believe it is the 8 but the 0 is throwing me off

**Math**

Which digit is in the thousandths place am confused by the 0 but I believe the 8 is in the thousandths place.

**Math**

was working it to fast forty-nine

**Math**

I have to write this number in word form 1,358,049? Is it One million, three hundred fifty-eight thousand, forty-five

**math**

At a school there are 704 chairs to place into 22 classes if the same number of chairs are placed in each class rooms how many chairs will be in each room? So I divided 704 by 22 and came up with 32 chairs and I correct.

**math**

Thank you Ms. Sue

**math**

3,537,000

**math**

3,537

**math**

The total land area for the United States is 3537438.98 square miles what is the value rounded to the nearest thousand square miles?

**physics**

To leave Nicholson, you exit via the door to the quad. The door is 40 inches wide and has a mass of 200 kg. You push the door with a perpendicular force of 52.61N exactly 0.86m away from the hinge. This generates the minimum torque, \tau_1, required to open the door. If you ...

**phyics**

a 1350 g projectile is launched with a force of 150N. the length f the firing arm is 1.25 m . determine the velocity

**algebra**

The mass of jupiter is about 1.900*10^24 metric tons.The mass of the sun is about 1.998*10^27 metric tons.about how many times the mass of jupiter is the mass of the sun?give answer in scientific notation.

**math**

two trains are at stations that are 800 miles apart. if they start traveling toward each other at the same time one averaging 67 mph and the other averaging 53 mph in how many hours will they pass each other?

**Math**

Write and graph an inequality for the daily number of calories that are recommended for a sedentary male. The graph shows Sedentary as: no more than 2200 calories.

**English**

That's another example in a different sentence in my essay. I already changed it , I need something to replace "doing lots"

**English**

Colloquial **

**English**

She doesn't want me to use that. For example she also said I had to change the word "handle " since it was colloquy a and I changed it to manage.

**English**

He is capable of doing lots with his physical ability but relies on the support of George in his life.

**English**

In my essay I wrote "doing lots" in a sentence and my teacher wrote me back feedback saying it was colloquial , how can I correct /change this and what can I use instead? Thanks :)

**Social Studies**

c. The Philippines Islands

**History**

Do some types of speech deserve more constitutional protection than others? If so, describe one (1) type that deserves the most protection and one (1) type that deserves the least.

**physics**

A person pushes a 16.5-kg shopping cart at a constant velocity for a distance of 36.6 m on a flat horizontal surface. She pushes in a direction 27.9 ° below the horizontal. A 48.1-N frictional force opposes the motion of the cart. (a) What is the magnitude of the force ...

**math**

Maria needed 5 gallons of gas to fill her car's gas tank. The mileage odometer read 34,300 miles. When the odometer read 34,528 Maria filled the tank with 12 gallons. At the end of the trip, she filled the tank with 17 gallons, and the odometer read 34,868 ...

**algebra**

please help!!

**algebra**

How would you convert the repeating nondeterminating decimal into a fraction? 0.151515...

**Math**

An executive committee consists of 11 members: 5 men and 6 women. 3 members are selected at random to attend a meeting in Hawaii. The names are drawn from a hat. What is the probability that all 3 selected are women? Thanks for the help

**Math**

Suppose you draw a card from an ordinary deck of playing cards What are the odds in favor of drawing a face card? b. What are the odds against drawing a face card?

**Chemistry**

How many moles of chloride ions are in 100mL of a 0.3molar solution of AlCl3? #moles Cl =(.3M AlCl3)(.1L)(105g/mol / 132g/m0l)

**Chemistry**

A 453 mL solution has a chloride concentration of 0.0253 M. This solution was prepared by adding solid FeCl3 to water. How many grams of FeCl3 are required?

**Math**

109-x=96 cannot figure out why 13 keeps coming up as the answer. Seems like you should be adding 109 to both sides; any help?

**Math**

1.8 divided into 5.0 is what answer? My answer is 2.7 with 7 continuing or with a remainder of 14

**Grade 12 Math**

At a certain marathon race, the winner comes in at a time of 130 minutes. Second place comes in at a time of 135 minutes, and third place comes in at 140 minutes. Starting with third place, contestants come in at regular intervals all the way up to the last successful finisher...

**Math**

Julio is making a bookcase with 5 shelves. Each shelf is to be 3/4 yard long. How much wood does Julio need for the shelves?

**Math**

At a certain marathon race, the winner comes in at a time of 130 minutes. Second place comes in at a time of 135 minutes, and third place comes in at 140 minutes. Starting with third place, contestants come in at regular intervals all the way up to the last successful finisher...

**Math**

PLEASE HELP ASAP!!! 1 rectangular prism has a base area of 120 square feet, a height of 12 feet per second and has dimensions of 84 inches, 6 feet, and 16 feet. Is the volume of the second more than or less than half that of the first? now explain

**Science**

343j

**physics - engine**

A car V8 has a bore of 4 in. and a stroke of 2.5 in., what is the engine size?

**Math**

No

**history**

Andre was correct just took the test got 100% Thanks Andre!

**physics**

An elephant walks east for a distance of 58 km, then walks north for a distance of 16 km and finally north east at 300 for 15 km. Find the magnitude of the elephant’s total displacement in kilometers. now would i find the change in distance by subtracting numbers and the ...

**MATH**

GIVE ME AN EXAMPLE OF A MULTI-STEP NUMBER SENTENCE THAT INCLUDES EXPONENTS (THAT WOULD INVOLVE ORDER OF OPERATIONS AND INCLUDE AT LEAST THREE NUMBERS).

**history**

2 is c I took the test

**Physics ( using earth to find pressure of planet y**

3. A model of Earth’s interior: Look up the radius and mass of the Earth. Radius is 6,371 km Mass is 5.974 x 10^24 kg Calculate its average density. p_e = (5.974 x 10^24 kg)/ (4/3)pi r^3 = (5.974 x 10^24 kg)/ (4/3)pi (6371)^3 = 5.54 g/cm^3 Imagine a planet of the same ...

**physics**

A car moving at 120 km/h is 100 km behind a truck travelling at 80 km/h in the same direction. How many km does the car travel before it overtakes the truck?

**biochem**

The pKa of butanoic acid is 4.87. A student mixes 120 mL of 0.45 M butanoic acid with 50 mL of 0.3 M NaOH and adds water to give a final volume of 1 L. What is the pH of the final solution? Please show you work.

**AP economics**

Explain how each of the following people would talk about scarcity and trade-offs the president of the United States, the leader of a developing nation, a US citizen whose income is in the top 1% and US citizen whose income is in the bottom 5%

**maths**

James is 6 and his

**PSY 202**

According to a 2011 report that is explained in our textbook, which of the following is one of the four overriding obstacles to gender equity in the workplace?

**algebra**

wright the slope-intercept formof the equation of each line given the slope and y- intercept slope=4/5, y-intercept=2

**Math**

1 1/2

**Math 157**

Find the prime factorization of 33^5*39*25^12 Thanks!

**MTH 157**

Thank you!

**MTH 157**

A company will need $50,000 in five years for a new addition.To meet this goal the company deposits the money in an account today that pays 4% annual interest compounded quarterly. Find the amount that should be invested to total $50,000 in 5 years. Thanks for the help!

**Math**

What is the greatest prime you must consider to test whether 7356 is prime?

**psychology**

* Does life really start in prenatal development? * Who are the actual individuals involved in the prenatal stage of development?

**research paper**

am i doing it correctly ?? Importance & benefits of stretching & warm-up exercises: Warm-up is exercising at a lower intensity in order to get the blood circulating and let your body know that you are preparing for exercise. While Stretching is an exercise designed to extend ...

**research paper**

Can anyone help me in writing a research paper on the importance & benefits of stretching & warm-up exercises

**Statistics**

Thank you!!!!!

**Statistics**

Is my question to vague? I am an older college student struggling to do statistics with no algebra background!!

**Statistics**

Police stopped 527 drivers. Of those stopped, 298 were ticketed. Of those 298, exactly 127 were cited for more than one violation. Estimate the probability that a driver who was stopped got a ticket. Which way is the correct one? 1/527=.0018 or 1/298=.003 Or am I way off?

**Algebra**

Could someone just double check my work sqrt280x^6/sqrt7x I got 2x^3 sqrt10\sqrtx Also 1/5(30y+40)+2/3(9y-27)=18 I got 7/3

**Statistics**

If 67% of cars have automatic tranny's & 8 cars are selected at random what is the probability that fewer than 4 have an automatic tranny

**algebra**

Solve ln(x+8) + ln(x-8) =0.

**algebra**

Solve 14 - ln(2-x)=0. solve for x -ln(2-x)=-14 ln 1/(2-x)=-14 1=-14(2-x) 1=-28+14x 29=14x 29/14=x not sure where I'm going wrong

**algebra**

Solve 10* 2^{4 x -5} = 41 so 2^{4x-5}=41/10 ln 2 * {4x-5}= ln 41/10 ln 4.1 +5/ ln 2 not sure what I'm doing wrong Thanks

**math**

I have a question I would really appreciate the answer. If 15% of my grade is 74% and 96 is 15% of my grade and 40% of my grade is a 60.5% without the final counting for 30% what is my grade? Please help thank you.

**algebra**

Find all rational zeros of the polynomial function P(x)=x^4 + 2 x^3 - 13 x^2 + 4 x - 30. Enter the rational zeros in a comma separated list. If there are none, enter "none". -3| 1 2 -13 4 -30 -3 15 -6 30 1 -5 2 -10 0 so (x+3)(x^3-5x^2+2x-10 so 5| 1 -5 2 -10 5 0 10 1 ...

**algebra**

Find all zeros of the polynomial function P(x)=x^4 + 2 x^3 - x^2 - 2 x . If there is more than one zero write them separated by commas. x=

**Algebra**

Let f(x)=(x-3)^2(x - 9). The y-intercept is y= ?-81 or -15 The x-intercepts are x= ?0,3 The end behavior on the right is ?even so + (enter "+" for rises, "-" for falls) The end behavior on the left is ?positive so + (enter "+" for rises, "-&...

**algebra**

Solve | 4 x+ 4 | = 3. Enter your solutions in a comma-separated list. x = I came up with -1/4 which is wrong

**algebra**

Solve \sqrt{10-x} + x=8. Enter your solutions in a comma-separated list. I used the quadratic formula and ended up with-127+-(-215)/2

**algebra**

Solve 2 x^2 + 3 x - 6 = 0. The solutions are x_1 = and x_2 =

**Algebra**

In interval notation what is 20-|7x+1|>=6

**Algebra**

In interval notation what is |7-8x|<10

**Science**

Two 20.-newton forces act concurrently on an object. What angle between these forces will produce a resultant force with the greatest magnitude? (1) 0° (2) 45° (3) 90.° (4) 180.°

**physics**

If the force of the explosion was focused onto a smaller ___________ of the window, then the pressure of the explosion on the window would be even greater.

**Algebra**

Let \ f(x) = 16 - x^2. Compute the average rate of change of f(x) on each interval. (a) [0,2] (b) [2,4] (c) [0,4]

**Algebra**

The equation of the line that goes through the point ( 2, 5 ) and is parallel to the line going through the points ( -2 ,4 ) and ( 6 ,2 ) can be written in slope-intercept form y = mx+b with: m = b =

**Algebra**

An equation of a line through (-3, -6) which is perpendicular to the line y=-5 x +3 has slope: I know the slope is 1/5 having problem with y-intercept is

**algebra**

What is x/(x-5)-3=5/(x-5) I came up with 5 but that is undefined

**Algebra**

Use the above graph of f(x) to complete the following table for values of its inverse function, f^{-1}(x). The graph has a point on (2,2)the y-intercept is 4 the x intercept is 3 x =-4, 8, 0, -2, 2 f^{-1}(x) Note: You can earn partial credit on this problem...

**algebra**

if f(x)=10x+7/6x+3 what is the f inverse