Saturday

April 30, 2016
Total # Posts: 95,930

**Math**

a man drives 30 miles in 2 hours. how many miles he will drive in 8 hours?
*March 8, 2016*

**Math**

i dont no
*March 8, 2016*

**Chemistry**

What is the maximum kinetic energy of an ejected electron if silver metal is irradiated with 228-nm light? The threshold wavelength for a silver metal surface is 267 nm.
*March 8, 2016*

**Chemistry**

What is the shortest wavelength of light that can be emitted by a hydrogen atom that has an initial configuration of 7p1?
*March 8, 2016*

**math**

Jennifer runs a restaurant that offers a children's menu. This past week, 24 children ate at her restaurant, and 8 of them ordered macaroni and cheese. What is the experimental probability that the next child to eat in Jennifer's restaurant will order macaroni and ...
*March 7, 2016*

**math**

How long does the Number 18 train take to get from Los Angeles to Oakland?
*March 7, 2016*

**math**

ennifer runs a restaurant that offers a children's menu. This past week, 24 children ate at her restaurant, and 8 of them ordered macaroni and cheese. What is the experimental probability that the next child to eat in Jennifer's restaurant will order macaroni and ...
*March 7, 2016*

**Math**

so it goes (5c - c) upstream and (5c + c) downstream t = d / r 5 = (48 / 4c) + (48 / 6c) 5c = 12 + 8
*March 7, 2016*

**math**

19/70 cannot be simplified 19+51 = 70
*March 7, 2016*

**math**

A jewelry store recently sold 19 pins and 51 other pieces of jewelry. What is the experimental probability that the next piece of jewelry sold will be a pin? Simplify your answer and write it as a fraction or whole number.
*March 7, 2016*

**Math**

Ariel scored a goal on 3 out of her last 12 shots. What is the experimental probability that Ariel will score a goal on her next shot? Simplify your answer and write it as a fraction or whole number.
*March 7, 2016*

**Math**

which of what ways> I dont see choices. if the dice are fair, one would expect a frequency of 1/12 (2*1/36+1/36) so in 500 trials, the best guess is 500/12=40.7 times. SO one should bet on 41, 42, 40, or 39 as being the most frequent, with 41 being the highest frequency.
*March 7, 2016*

**math**

ok....
*March 7, 2016*

**math**

yes but if it's both reasonable answers.. how would you know if it's 1/2 or 1/3? why isn't it 1/3?
*March 7, 2016*

**math**

It certainly can't be both.
*March 7, 2016*

**math**

how am I supposed to know whether 1/2 or 1/3 is the answer?
*March 7, 2016*

**math**

well 10/30 simplified would be 1/3 and 10/20 would be 1/2 I don't know what you mean by a reasonable fraction like how do you know if it's a reasonable fraction?
*March 7, 2016*

**math**

it's different for each problem apparently for some you add the total example: 20+10 = 30 put 10/30 and simplify it and on some you just for example for this problem simplify 10/20.. The thing is I don't know which rule to do when I get a question like the ones I asked
*March 7, 2016*

**math**

I don't know for each question whether we should for example: simplify 10/20 or add 20+30 = 50 and so simplify 10/50......
*March 7, 2016*

**math**

During 20 spins, a spinner landed on blue 10 times. If you spin the spinner once, what is the experimental probability that it will land on blue?
*March 7, 2016*

**math**

The Columbia County Fair has a prize wheel. So far, 3 people have won a prize and 15 people have not. What is the experimental probability that the next person to spin the wheel will win a prize? Simplify your answer and write it as a fraction or whole number.
*March 7, 2016*

**math**

Avery is playing darts. So far, she has hit the bullseye 5 times and missed the bullseye 45 times. What is the experimental probability that Avery will hit the bullseye on her next toss? Simplify your answer and write it as a fraction or whole number.
*March 7, 2016*

**Math**

I don't know
*March 7, 2016*

**math**

Miki's Pie Shop recently sold 20 pies, of which 8 were blueberry pies. What is the experimental probability that the next pie sold will be a blueberry pie? Simplify your answer and write it as a fraction or whole number.
*March 7, 2016*

**math**

Of the recent customers at East Coast Dogs, 9 wanted mustard on their hot dogs and 3 did not. What is the experimental probability that the next customer will want mustard? Simplify your answer and write it as a fraction or whole number.
*March 7, 2016*

**math**

What is the resulting ordered pair if the value of the independent variable is –2?
*March 7, 2016*

**math**

Thank you
*March 7, 2016*

**math**

Have $15.00,spend $13.00 what fraction is spent?
*March 7, 2016*

**Physics**

Find the electric field at a point midway between two charges of +39.5 ✕ 10-9 C and +72.0 ✕ 10-9 C separated by a distance of 31.8 cm.
*March 7, 2016*

**Geometry**

2. If m 1= 53 what is m<4. 53 43 *** 37 27 3. If m 1= 55 what is m<5 55 40 *** 35 25 Please check my answers.
*March 7, 2016*

**Language Arts**

can one of you help me with my qustion
*March 7, 2016*

**Language Arts**

she was helping
*March 7, 2016*

**Geometry**

@XenaGonzalez
*March 7, 2016*

**Geometry**

@ThatGirl
*March 7, 2016*

**Geometry**

2. If m 1= 53 what is m<4. 53 43 37 27 3. If m 1= 55 what is m<5 55 40 35 25
*March 7, 2016*

**Algebra**

the answer is b y=19x-10
*March 7, 2016*

**Art**

The towers of St. Balsil's Cathedral in Russia are symbolic of what events? Please Help!!!
*March 7, 2016*

**life orientation **

State two options of studies offered in higher education in the extra above
*March 7, 2016*

**Language Art's**

I have to agree with Anonymous @Memes.
*March 7, 2016*

**Language Art's**

can't*
*March 7, 2016*

**Language Art's**

^ You're rather hypocritical considering you can even spell.
*March 7, 2016*

**science**

A machine raises a load of 600N through a height of 1.5m when an effort of 100N moves a total distance of 20m.(a) calculate the work done in raising the load.(b) what is the mechanical advantage of the machine?(c) calculate the efficiency of the machine.
*March 7, 2016*

**histoy please help**

Carrie Is right 100% I just got an A
*March 7, 2016*

**Social Studies**

@Writeteacher
*March 7, 2016*

**Social Studies**

A?
*March 7, 2016*

**Social Studies**

Which describes a belief of the progressive movement? (1 point) the belief that government could correct the ills of society the belief that individual citizens could work to improve social problems the belief that business and the free enterprise system could best improve ...
*March 7, 2016*

**Math**

A three- digit number between 600 and 700 is one less than 30 times ths sum of the digits. If the tens digits is one less than the units digit, What is the number?
*March 7, 2016*

**math**

Find a single matrix that defines a rotation of the plane through an angle of π/6 about the origin, while at the same time moves points to five times their original distance from the origin.
*March 7, 2016*

**trig**

Solve for sin4x=sin2x?
*March 7, 2016*

**maths**

Pr(getting a head) =100/200 = 1/2 pr(of getting a head odd number) =17/200
*March 7, 2016*

**maths**

Two poles having a height of 5m and 13m are 6m apart from each other. Find their distance between top of the two poles.
*March 7, 2016*

**Statistics Please help me :(**

I have no idea where to even start. Suppose heights of men are normally distributed with a mean 69.0 inches and standard deviation 2.8 inches. How many of a group of 1000 men would you expect to be between 70 and 72 inches tall? Round to the nearest whole number. Suppose ...
*March 7, 2016*

**Linear Algebra**

Determine the projection of the vector v = (−1, 6, 4) onto the vector u = (−1, 2, 4).
*March 6, 2016*

**Math**

Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 15. Find the probability that a randomly selected adult has an IQ that is less than 115. Round to the nearest thousandth. Answer precisely. Do not use the Empirical ...
*March 6, 2016*

**MATH**

How do you find the z score of a percentile? For ex.: Find the z score of P88
*March 6, 2016*

**Finance**

Fill out the missing items on the Kim, Inc.’s balance sheet based on the ratios given below: Cash and marketable securities 800 current liabilities ? Accounts Receivables ? Long term Debt ? Inventory ? Equity ? Fixed Assets ? TOTAL ASSETS $8800 TOTAL LIABILITIES AND ...
*March 6, 2016*

**Math**

I assume charts. It's an online class and I'm basically teaching myself. z = (x -mean)/ sd z = (72-68)/2 z= 4/2= 2 1-.9772 = .0228 2.28% I saw this example (I found the same question with different numbers) and it made sense to me until the 1-.9772 = .0228 Where is ...
*March 6, 2016*

**Math**

Suppose heights of men are normally distributed with a mean 69.0 inches and standard deviation 2.8 inches. What percent of men are over 6 feet tall? Round to the nearest tenth of a percent. I understand finding the z score but I'm not sure how to find the percent part. Help?
*March 6, 2016*

**Statistics**

Suppose heights of men are normally distributed with a mean 69.0 inches and standard deviation 2.8 inches. What percent of men are over 6 feet tall? Round to the nearest tenth of a percent. I understanf finding the z score, but I'm not sure how to find the percent.
*March 6, 2016*

**physics**

lmao UH's physics test am i right
*March 6, 2016*

**physics**

A 910kg object is released from rest at an altitude of 1200 km above the north pole of the earth. If we ignore atmospheric friction, with what speed does the object strike the surface of the earth?
*March 6, 2016*

**mat**

f(x)=5sin^2x-8cos^5x [0,5 1.5]
*March 6, 2016*

**history**

the answer is B
*March 6, 2016*

**history**

8.)How did westward expansion affect Native American tribes? A.)Railroad expansion allowed Native American hunters to sell bison meat & hides at higher rates than before B.)Railroad expansion brought U.S settlers in contact with bison, drastically reducing the population of ...
*March 6, 2016*

**algebra**

A tourist sailed against the current on a river for 6 km, and then he sailed in a lake for 15 km. In the lake he sailed for 1 hour longer than he sailed in the river. Knowing that the current of the river is 2 km/hour, find the speed of the boat while it is traveling in the ...
*March 6, 2016*

**physics**

at 10 V the current is 5 mA so the total resistance is ... 10 / .005 = 2 kohm so a (2000 - 60) ohm resistor is used in series
*March 6, 2016*

**Biology**

Ralph chromosomes X(h)Y Beatrice chromosomes XX Maureen chromosomes X(h)X George chromosomes XY Nick chromosomes X(h)Y
*March 6, 2016*

**Life orientation**

Practical action that you can take to address human right violatin in your community
*March 6, 2016*

**stats**

Suppose x has a normal distribution with sigma = 1.2. Find the minimal sample size required so that for a 95% confidence interval, the maximal margin of error E = 0.5.
*March 6, 2016*

**English**

The nurse, who was late for work, put the manual into a large blue tote bag getting out of the car. Which of the following is misplaced in the sentence above? A. who was late for work B. getting out of the car C. into a large blue tote bag D. put the manual. I think b
*March 6, 2016*

**English**

Thanks!
*March 6, 2016*

**English**

Which of the following options best demonstrates sentence fluency? A. The city looked beautiful in that it was lit by the sun which I was walking down the street. B. Walking down the street in the sunshine, the city looked beautiful. C. The city looked beautiful as I was ...
*March 6, 2016*

**science**

Gold(at weight 197gmol-1) crystallizes in a cubic closest packed structures ( the face centred cubic ) and its density is 19.3 gcm-3 .calculate its atomic radius.?
*March 6, 2016*

**maths**

The sum of two consecutive counting numbers divided by their positive difference is 9. Find the larger numbers.
*March 6, 2016*

**Life orientation**

Three courses or study field i can study after grade 12
*March 6, 2016*

**Science**

What is the balanced chemical equation for "solid calcium hydrogen carbonate reacts with hydrochloric acid solution producing carbon dioxide,water and calcium ions in solution?"
*March 6, 2016*

**Pre calc quadratic stuff**

But question is how to find a
*March 6, 2016*

**Pre calc quadratic stuff**

No u can use any point of origin u want. i would reccommend using 0
*March 6, 2016*

**Pre-Calc**

How do I write the partial fraction decomposition of 7/(x^2+13x+40)?
*March 6, 2016*

**L.O**

Propose 6 practical that you can take to adress human right violations of xenophobia in your community
*March 6, 2016*

**Physics**

A 910kg object is released from rest at an altitude of 1200 km above the north pole of the earth. If we ignore atmospheric friction, with what speed does the object strike the surface of the earth? (the polar radius of the earth is 6357 km)
*March 6, 2016*

**Biology**

When Inorganic phosphate ions, that usually repel are required to be bonded to form ADP or ATP, a lot of energy has to be given. So the bonds formed have high energy. ATP Pi-Pi-Pi When one of these bonds break to form ADP, they release huge amounts of energy. ADP Pi-Pi + Pi + ...
*March 5, 2016*

**political science**

The former Soviet Union cannot be considered a democracy because A. it did not regularly hold elections B. it permitted no acts of conventional participation C. it had no legislature D. there was only one political party
*March 5, 2016*

**political science**

i thought it was d
*March 5, 2016*

**political science **

Which of the following conditions was NOT a part of the Lemon Test, as established by the Supreme Court? A. They must not entangle the government exclusively with religion B. The primary effect must not be to advance or inhibit religion C. There must be a secular purpose D. ...
*March 5, 2016*

**political science**

so A? just to double check
*March 5, 2016*

**political science **

According to Justice William O. Douglas, where can zones of privacy (the right to privacy) be found in the Constitution? A. throughout the Constitution B. in the penumbras of the Bill of Rights C. in the First Amendment D. in the writings of the Founders
*March 5, 2016*

**Math**

Michele wanted to measure the height of her school’s flagpole. She placed a mirror on the ground 48 feet from the flagpole, then walked backwards until she was able to see the top of the pole in the mirror. Her eyes were 5 feet above the ground and she was 12 feet from ...
*March 5, 2016*

**8th grade language arts**

Not correct. Looking through the answer choices and no
*March 5, 2016*

**Climate Physics**

Hi, Hour angle= 15 degrees*(time-12) 15 degrees*(12-12)=0 H=cos(0)=1 Z=cos^-1(sin(65 degrees)*sin(22 degrees)+cos(65 degrees)*cos(22 degrees)*cos(0) Z=0.7504915 I=ScosZ S=1368 Wm^-2 I=1368*cos(0.7504915) I=1000.492 Wm^-2 Is this correct in your opinion?
*March 5, 2016*

**Climate Physics**

Thanks Bob. I neglected to give the latitude of 65 degrees North. I also looked at the reference material. From what I can see, you need an hour variable. The question does not indicate a time. This is why I find the question difficult.
*March 5, 2016*

**History**

Describe the functions of the three different branches of the United States government. In your description, be sure to identify the purpose of each branch and provide examples of how each branch can check the power of the other two branches of government.
*March 5, 2016*

**science**

Calculate the wavelength of a wave of frequency 40 MHz propagating in a medium Speed of light-(3*10to the power 5. )
*March 5, 2016*

**trigonometry**

verify sinx/secx = 1/tanx+cotx
*March 5, 2016*

**Math**

Two numbers are in the ratio of 3 to 4. If the smaller number is increased by 10 and the bigger number is decreased by 10, the results are equal. Find the numbers?
*March 5, 2016*

**Chemistry**

When perturbing the equilibrium with heating and cooling, how many times do you think the equilibrium can be shifted before it stops working? Why? How about modification of the equilibrium through changes in concentration?
*March 5, 2016*

**LA**

thank you bye
*March 4, 2016*

**LA**

okay i got to go so just say if i am right and i don't understand 6 still but just write the right answers please and i will see it tomorrow morning
*March 4, 2016*

**LA**

1 is b and 2. is a
*March 4, 2016*