# Posts by katie

Total # Posts: 2,088

**Physics**

The driver of a car is going 30 m/s slams on his brakes, the car's tires lock, and the car skids to a stop on a level roadway. The kinetic coefficient of friction between its tires and the pavement is 0.75 as it slides. Draw a free body diagram of the car, find its ...

*December 22, 2015*

**math**

OK what?

*December 17, 2015*

**math**

Write an equation with a variable on both sides of the equal sign that has infinitely many solutions. Solve the equation and explain why it has an infinite number of solutions. I have no idea?

*December 17, 2015*

**math help plz?**

Ok thank ya'll so much. :)

*December 17, 2015*

**math help plz?**

So its D?

*December 17, 2015*

**gRammar**

True

*December 14, 2015*

**Math**

Ok, I get it now. Thank you.

*December 5, 2015*

**Math**

The length of a rectangle is 5 inches less than 3 times the width. The perimeter of the rectangle is 14 inches. Find the length and width of the rectangle. I did this: Length 3x-5; width 3x Then I did guess and check and came up with X=2 solving the problem with a perimeter of...

*December 5, 2015*

**Math**

Jim uses ribbion to make bookmarks. Jim has 9 feet of ribbion. He uses 1/3 foot of ribbon to make each bookmark. What is the total number of bookmarks J makes with all 9 ft of ribbon?

*November 29, 2015*

**math**

Maybe they are asking how much was added to get 4.87? Then you would subtract 4.87 and 3.93 to see how much was added.

*November 29, 2015*

**Math**

Yay! Thank you!

*November 28, 2015*

**Math**

I found x=4 and y=8 is that right? Then I found the area is 16. Is that right?

*November 28, 2015*

**Math**

A right triangle is formed by the origin and the x and y intercepts of the line 14x+7y=56. Find the area of the triangle. I know that Area of a triangle is 1/2bh, but how do I find the base and height? Thank you.

*November 28, 2015*

**Math**

Thank you!

*November 28, 2015*

**Math**

One triangle has side lengths 3,5, and 6. A similar triangle has side lengths 18, 15 and 9. Which of the following ratios is the scale factor of the triangles? A 1/6 B 1/3 C 1/5 D 2/3 The answer is given as B, but I don't understand why or how to get that. Please help.

*November 28, 2015*

**Math**

Yes, I want exactly 10 of the 50 classes to contain no left handers. So, instead of using .08 as the p for the last part, I should use the probability found from no left handers in a class of 20 instead? The question did ask me to find this as well, although I didn't put ...

*November 21, 2015*

**Math**

URGENT! In a school, 8% of students are left handed. If 50 classes of 20 students are randomly selected, what is the probability of 10 classes have no left handed students? I know that this is a binomial distribution question, but I can't seem to do this question even ...

*November 21, 2015*

**Chem**

what is the mass in amu of 3.12 moles of Ba(NO3)2?

*November 13, 2015*

**Science**

What laboratory instrument utilized the wave nature of electrons?

*November 13, 2015*

**Math 141**

Two cards are drawn from a well-shuffled deck of 52 playing cards. Let X denote the number of aces drawn. Find P(X = 0). (Round your answer to three decimal places.)

*November 13, 2015*

**math**

My answers 1. C. 10 2.D 9 3. B 12 4.c 8 100% correct trust me will pass it ! Just took the test

*November 12, 2015*

**precalc**

I don't understand how to do these w/o calc. I tried to write it in a way that will make someone understand how to read it. Hope I typed it clear enough.Thanks so much for the help anyone! How to find the exact value of logarithm: 10. log5^100 -log5^4 11. log4^8 +log4^8 12...

*November 12, 2015*

**Math 141**

Box A contains 3 white marbles and 4 black marbles. Box B contains 6 white marbles and 5 black marbles. An experiment consists of first selecting a marble at random from Box A. The marble is transferred to Box B and then a second marble is drawn from Box B. What is the ...

*November 12, 2015*

**Math 141**

Three machines turn out all the products in a factory, with the first machine producing 20% of the products, the second machine 15%, and the third machine 65%. The first machine produces defective products 17% of the time, the second machine 8% of the time and the third ...

*November 11, 2015*

**precalc(LOGS) CONFUSED!**

How do I rewrite without logarithms?? 2. log x= log a - 4 log b 3. ln t= 3/2 ln a - ln p 4. log y = 3 log x + log 17

*November 11, 2015*

**Precalc**

i figured C. I'm really stuck on b &d. btw. I can't use a calculator to figure these because we aren't supposed to. How do you find it out w/o using calc.

*November 11, 2015*

**Precalc**

Given log2=0.3010, log3=0.4771, log5=0.6690, and log7=0.8451... Find a.) log8 b) log5/7 c.) log1.5 d.) log3/14 e) log12 I didn't know how to do b, c, and d. I also don't know if log 12 is right. Answer: a.) 0.903 b.)? c.)? d.)? e.) 1.0791

*November 11, 2015*

**Math Please check**

Okay, so I have to reduce my answer then I will have it right. Thank you!

*November 5, 2015*

**Math Please check**

-4x+3y=12 Solve for y I got: 12+4x/3 Is that right?

*November 5, 2015*

**Math**

Steve please help or somebody please help

*November 5, 2015*

**Math**

Please help

*November 5, 2015*

**Math**

Is the simplified form of 2square root of 3 ⋅ 2square root of 6 rational? Yes or No

*November 5, 2015*

**Math**

Thank You

*November 4, 2015*

**Math**

Which of the following options results in a graph that shows exponential growth A.f(x)= 0.4(3)^x B.f(x)= 3(0.5)^x C.f(x)= 0.8(0.9)^x D.f(x)= 0.9(5)^-x

*November 4, 2015*

**Math**

Thank You so much

*November 4, 2015*

**Math**

Which of the following options is an equivalent function to f(x) = 3(2)3^x? A.f(x)=3(8)^x B.f(x)= 24^x C.f(x)= 27(8)^x D.f(x)= 3(8x)

*November 4, 2015*

**Social Studies**

Who won the battle of the Atlanta Campaign

*October 28, 2015*

**Social Studies**

Interesting facts😑😑😑😑😑😊

*October 28, 2015*

**Social Studies**

Wat r 10 facts u didn't know about the Atlanta Campaign

*October 28, 2015*

**English**

Just took the test the answers are: 1)B 2)A 3)Flase Sorry if you got it wrong because she didn't say the answer. I personally did the whole lesson but still had trouble with the test.

*October 28, 2015*

**Math**

(3p-pq^3)2pq= I got: 6p^2q - 2p^2q4 Can it be simplified more?

*October 26, 2015*

**Math please check**

p= -3; q=2 2q(p+q)+3pq I got -22

*October 26, 2015*

**Math please check my work**

I see that now! Thank you!

*October 26, 2015*

**Math please check my work**

Where did I go wrong? I did this: 16(3--2) -8 + -8 16(5) + -16 80-16= 64 Thanks for your help.

*October 26, 2015*

**Math please check my work**

I forgot to put that x=4 and y=-2

*October 26, 2015*

**Math please check my work**

4x(3-y) - 2x + xy I got 64. Is that right?

*October 26, 2015*

**math**

A prize of $100, $200, $500, or $1000 will be randomly awarded to a game show contestant, with the probabilities of winning each prize shown in the table below. What is the expected value of the prize that will be awarded?

*October 21, 2015*

**Physical Education**

Awesome thanks "hey"

*October 19, 2015*

**Tech**

1.B Hurricanes earthquakes volcanoes 2. D. Action button 3. A. Cite a source Trust me 100% 3/3 I pass it !

*October 15, 2015*

**Natural Disasters**

1. B hurricanes earthquakes volcanoes 2. D action button 3. A cite a source 100% trust me

*October 15, 2015*

**Math**

True of false A broken scale can make changes in data appear less they than they actually are. If false, explain why. I know the answer is false because it is in my book, but I don't understand why.

*October 14, 2015*

**Physical Science**

I put that the kinetic energy increases, but am I missing something? Is that the whole answer?

*October 13, 2015*

**Physical Science**

What happens to the kinetic energy of a snowball as it rolls across the lawn and gains mass?

*October 13, 2015*

**Science/math**

Newtons second law of motion states that F =MA Force equals mass multiplied by acceleration. Mass is the constant. It does not change. What is the independent and dependent variable? I put force is independent and acceleration is dependent. Is that right?

*October 11, 2015*

**Math-Sorry I had a mistake in the first problem.**

Please check my work: Label the dependent and independent variable. 1. Time spent studying and Score on a test 2. If a scientist conducts an experiment to test the theory that a vitamin could extend a person's life expectancy. What are the dependent and independent ...

*October 10, 2015*

**Msth**

Please check my work: Label the dependent and independent vstiablr. 1. Time spent studying and Score on a test 2. If a scientist conducts an experiment to test the theory that a vitamin could extend a person's life expectancy. What are the dependent and independent ...

*October 10, 2015*

**Study Skills Practice**

1. B 2.d 3. A 100% correct

*October 5, 2015*

**Mental & Emotional Health**

1. true 2. time magement 3. true 100% correct these are the correct answers 3/3 100%

*October 2, 2015*

**Math**

Okay, thank you.

*October 1, 2015*

**Math**

How did you get that 1 cubic centimeter = 0.0610237 cubic inch ?

*October 1, 2015*

**Math**

Convert 630 cubic centimeters to cubic inches. I know that 1 inch = 2.54cm I tried 630/2.54 but I didn't get the answer in my book, which is 38.44. What am I doing wrong please?

*October 1, 2015*

**Tech**

1.B hurricane, earthquakes, volcanoes. 2.d action button 3. A cite a source Here are the correct answers. Trust me I got a 100% 3/3 100%

*October 1, 2015*

**Tech**

1.which of the following choice names are three natural disasters 1. B hurricanes earthquakes and volcanoes 2. D action button 3. A cite a source Here are the real answers first.trust me you will past the test! 100%! I got a 100%

*October 1, 2015*

**Language arts**

Yea thanks I got 100% correct

*October 1, 2015*

**Math**

That's what I did and I got .45. I was just doubting myself because I thought I had to set it up differently. It seemed too easy. Thank you.

*September 30, 2015*

**Math**

A basketball player attempted 1789 free throws. He made 801 of of them. What is the probability that the player will make the next shot he attempts? Write the probability as a decimal rounded to the nearest hundredth.

*September 30, 2015*

**science**

1. B 2. A 3.b 4. A 5. D 100% correct I got 5/5

*September 30, 2015*

**Algebra 1**

What are the two quantities that should be measured to find the rate at which water flows out of a shower head? Explain how the rate can be determined. Thanks!

*September 28, 2015*

**Math**

1. B -9 2. C y^19 3. D w^ -6 4. B 1 5. C 5^3 ThESe are a 100% correct True me will pass it.

*September 28, 2015*

**Science PLEASE HELP**

Okay, so yes a mixture can be made up of only elements. Why? Because mixtures can be made up of compounds and/or elements. Right?

*September 27, 2015*

**Science PLEASE HELP**

Could a mixture be made up of only elements and no compounds? Explain why or why not.

*September 27, 2015*

**Science**

Could a mixture be made up of only elements and no compounds? Explain why or why not.

*September 27, 2015*

**Math**

See what 12 and 9 go into (3) 3 goes into 12 4 times 3 goes into 9 3 times take the biggest number and times both of them by that number. 9x4 = 36 12x4 = 48 Take the number 3 goes into and add that number to 9:15am Glad i could help xx

*September 27, 2015*

**algebra**

If a=2 what is -a^2? -4 or 4? Why?

*September 22, 2015*

**Algebra**

ten-pin bowling ball has a volume of about 5274 cm3. A candlepin (8) bowling ball has a volume of about 48 in3. About how much greater is the volume of a ten-pin bowling ball than the volume of a candlepin bowling ball?

*September 20, 2015*

**Chemistry**

Lead has a density of 11 g/ml. Mercury has a density of 13.6 g/ml. How much more volume would 1 pound of lead occupy the one pound of mercury?

*September 19, 2015*

**statistics**

The cholesterol levels of adult American women has a mound-shaped and symmetric distribution with a mean of 188mg/dL and a standard deviation of 24 mg/dL. In what interval would you expect most American women’s cholesterol levels to be? Explain.

*September 19, 2015*

**physics**

Light from the Sun reaches Earth in 8.3 min. The speed of light is 3.00 x 10^8 m/s. How far is Earth from the Sun?

*September 15, 2015*

**science**

Study skills 1. A maitaining a postive attitude 2. D trying studying at the libary instead of at home 3. C look at headings and subheadings of the lesson to get a idea of what the lesson is about 4. B questing keeps your brain actively trying to find the answers while you are ...

*September 14, 2015*

**Health**

1. C 2. C 3. A 4. A and c 5. C 6. B 7. D 8. A 9.a 10.d 11.true 12. C 13. True 14. A 15. C 8, 16 These are a 100% correct TRUST ME WILL PASS IT!

*September 11, 2015*

**Chemistry**

If 5ml of 10M HCl was added to 1 litre of 0.4M 3-(N-morpholino) propane sulfonic acid what would be the resulting pH?

*September 5, 2015*

**Health**

1. C 2. C 3. True 4. A and c 5. C 6. B 7. D 8. A 9. A 10. D 11. True 12. C 13. True 14.a 15. C 8,16 100% correct I pass it

*September 4, 2015*

**English 10**

Correct :) 100%

*August 24, 2015*

**Health and physical education**

1. C devolopment of ovaries in girls and testes in boys. 2. C hormonal changes 3. True 4. A and d 5. C your friends have recently started smoking 6.C Action plan 7. D continue searching for a reliable resources on the topic 8. A continuum 9. A physical health 10. D isolating ...

*August 17, 2015*

**Math**

Internal rate of return What is the internal rate of return for the following project. An initial outlay of $9500 resulting in a single cash inflow of $16,281 in 7 years. Internal rate of return for the project is ___%

*June 15, 2015*

**Chemistry**

What is the total internal energy change (∆E), in J, of a system that releases 202.90 J of heat and absorbs 315.7 J of work from the surroundings?

*June 10, 2015*

**Civics ASAP PLZ =:)**

I had this question on a test of mine. I hope this is correct! Thx

*May 30, 2015*

**Geometry**

Find the approximate surface-area-to-volume ratio of a bowling ball with a radius of 5 inches. A. 0.6 B. 0.67 C. 1.67 D. 25

*May 29, 2015*

**math**

Yay! Thank you so much. Very much helps! :D

*May 14, 2015*

**MATH**

Awesome thanks so much!

*May 14, 2015*

**Math Help**

With the given information below, write the standard form equation for the parabola. 1.) Vertex: (-1,2) Focus(-1,0) 2.) Vertex: (-2,1) Directrix x=1

*May 6, 2015*

**Physics**

A weather balloon is released at an altitude of 500m. The force of gravity on the balloon is 21.1n. The lift force provided by the atmosphere is 18.7n. Which of the following is true about the balloon? a. The balloon rises at constant velocity. b. the net force on the balloon...

*May 6, 2015*

**Physics**

Update: Planets are not uniform inside. Normally, they are densest at the center and have decreasing density outward toward the surface. Model a spherically symmetric planet, with the same radius as the earth, as having a density that decreases linearly with distance from the ...

*April 30, 2015*

**Physics**

A small block is attached to an ideal spring and is moving in SHM on a horizontal, frictionless surface. When the amplitude of the motion is 0.090m , it takes the block 2.68s to travel from x= 0.090m to x= -0.090m . If the amplitude is doubled, to 0.180m , how long does it ...

*April 26, 2015*

**Language Arts**

Lee IS right!!! 100% Ohhhh yeah!

*April 23, 2015*

**Language Arts**

Is Lee right or wrong?? -.- I need to know

*April 23, 2015*

**Math**

you have four $1 bills, two $5 bills, five $10 bills, and five $ 20 bills in your wallet. You select a bill at random. Without replacing the bill, you choose a second bill. What is P($1, then$ 10)?

*April 22, 2015*

**Art**

Yep Anon was right! Thanks sooooo much!! :D

*April 22, 2015*

**Art**

The answer was D XD And btw if you go to connections 1 was c and 2 was b Just saying ;)

*April 18, 2015*