Friday

October 9, 2015
Total # Posts: 85,740

**Physics**

At what upstream angle must the swimmer aim, if she is to arrive at a point directly across the stream of a 42-m-wide river whose current is 0.50 m/s? A swimmer is capable of swimming 0.62m/s in still water.
*September 15, 2015*

**bodmas**

7/5 (3%2)+3*6
*September 15, 2015*

**English**

Sally wants a new bicycle,but her mother and father will not buy her one.
*September 15, 2015*

**ap biology**

thanks
*September 15, 2015*

**ap biology**

If you have fluid in the pipet tip and want to expel it all, should you only depress the plunger to the first stop or should you continue on to the second stop? why not choose the other option? what could happen?
*September 15, 2015*

**belle heth**

90+50=140 90+10 100+
*September 15, 2015*

**ap biology**

thanks
*September 15, 2015*

**ap biology**

if you depress the plunger to the first stop, place the tip into a solution and then release the plunger, does it withdraw the sample, expel the sample, or eject the tip?
*September 15, 2015*

**ap biology**

what two things could happen?
*September 15, 2015*

**ap biology**

why should you not rotate the volume adjuster of a micropipettor above or below the range written on the instrument?
*September 15, 2015*

**PLEASE- physics**

@Steve, thank you so much!
*September 15, 2015*

**PLEASE- physics**

You are standing at the top of a cliff that has a stairstep configuration. There is a vertical drop of 6 m at your feet, then a horizontal shelf of 10 m, then another drop of 4 m to the bottom of the canyon, which has a horizontal floor. You kick a 0.76 kg rock, giving it an ...
*September 15, 2015*

**math**

if x and y are real numbers such that 0<x<y^2, then which of the following inequalities must be true? A. x<y B. y>0 C. 3x>y^3 D. x<1 E. x>3y^2
*September 15, 2015*

**english help please!!**

jnbkj
*September 15, 2015*

**Language arts**

It is just the past
*September 15, 2015*

**English help please**

12
*September 15, 2015*

**English help please**

9. The author of "My Brother's Keeper" mainly develops Jamie’s character through his actions *dialogue and thoughts the narrators description other’s reaction to him 10. In "My Brother's Keeper," what does Ted want Jamie to do for him? ...
*September 15, 2015*

**Calculus**

the equation is supposed to be |(6x^2+5x-3)/(2x^2-1) -3 (the negative three is outside of the fraction) |
*September 15, 2015*

**Calculus**

I have done one part of this question. I am, however, unsure as to how to set up the graph. Can someone help me? 1. Use a graph to find a number N such that |(6x^2+5x-3)| | |------------- -3 | < 0.2 whenever x>N |(2x^2-1)| | y=2.8 and y=3.2 My issue is how to find the x...
*September 15, 2015*

**Calculus**

May someone answer this question for me? Thank you! I appreciate it. a.) Use the definition of continuity and the properties of limits to show that the function is continuous on the given interval. f(x)=(2x+3)/(x-2), (2, ∞)
*September 15, 2015*

**intermediate algebra**

Eureka is 16 years younger than Renton. In 13 years Renton will be twice as old as Eureka. How old are they now?
*September 15, 2015*

**algebra**

The freshman class at a major university contains 6438 students. This was a 26% decrease from the size of the freshman class the year before. What was the size of last year's freshman class?
*September 15, 2015*

**Writing**

Please check my rewrites (the ones with a black dot/bullet). Thank you! a. The importance of your family. Thesis: The success of a child depends on the support of his or her family. * I think this is debatable because the other side could argue that the success of a child ...
*September 15, 2015*

**Physics**

6.2
*September 15, 2015*

**social studies**

A
*September 15, 2015*

**Writing**

Please check my rewrites (the ones with a black dot/bullet). Thank you! a. The importance of your family. Thesis: The success of a child depends on the support of his or her family. * I think this is debatable because the other side could argue that the success of a child ...
*September 15, 2015*

**Trigonometry**

In travelling across flat land, you notice a mountain directly in front of you. Its angle of elevation (to the peak) is 4.5°. After you drive 13 miles closer to the mountain, the angle of elevation is 9.5°.
*September 15, 2015*

**algebra l **

-2 = 4r + s for s
*September 15, 2015*

**math**

Dawn Lingua bought three yards of cloth to make some curtains. The cloth was on sale for $2.25 per yard. How much did Dawn pay for the cloth if the sales tax was 5%?
*September 15, 2015*

**ALGEBRA PLS**

yes
*September 15, 2015*

**math**

let ratio 8x:5x area of triangle=1/2 bh 320=1/2*8x*5x 320=20x*x x*x=16 x=4 base=8*4=32 height=5*4=20
*September 15, 2015*

**Writing**

Formulate a workable thesis statement for each of the following general subjects and topics. Please give me some feedbacks on my thesis statements. Thank you! a. The importance of your family. Thesis: The success of a child depends on the support of his or her family. * I ...
*September 15, 2015*

**Math**

Solve the equations and inequalities using algebraice properties for the following: 28x + -6(3x + -5) = 60 3(x-2)-8x<44
*September 15, 2015*

**Writing**

Formulate a workable thesis statement for each of the following general subjects and topics. a. The importance of your family. Thesis: The success of a child depends on the support of his or her family. b. The difficulty of adjusting to college. Thesis: Despite the difficulty ...
*September 15, 2015*

**Algebra 1**

28x-18x+30=60 10x=60-30 10x=30 x=3 3(3-2)-8*3<44 (3*1)-24<44 3-24<44 -21<44
*September 15, 2015*

**Algebra**

How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the remaining solution contains 16% peroxide?
*September 15, 2015*

**Geometry please help!**

haha thank you anyway, I got it right. 100%! :) Have a nice day! @Writeacher
*September 15, 2015*

**Geometry please help!**

@Writeacher, if you can please check my answer, that would be great! :)
*September 15, 2015*

**Geometry please help!**

Which of these is a step in constructing an inscribed square using technology? Construct segment DB, segment CE, segment EG, segment GI, and segment ID. Draw segments BR, RS, and SB Identify the points of intersection between circle A and circle G Mark the points of ...
*September 15, 2015*

**Langauge**

I NEED HELP WITH MY LANGAUGE WORK!!! I need to unscramble "PRLAUGNILIBETLIC"! sOMEONE PLEASE HELP!!!
*September 15, 2015*

**English**

Looked up to would mean she admires the man where looked up at is more literal in meaning she LOOKED UP AT HIM
*September 14, 2015*

**Statistics**

Using the empirical rule, 95% of female heights should be between what two values? Either show work or explain how your answer was calculated
*September 14, 2015*

**Cemistry **

Tom wanted to test his hypothesis that plants grow better at room temperature than in cold temperatures. He placed an ivy plant in the refrigerator, which had no light source.He also placed a spider plant in the window in his room. b. What were Tom's controls? Is it the ...
*September 14, 2015*

**Math**

14 units, x-5/2=y-7/3=z-3/6
*September 14, 2015*

**Math**

Your a 7th grade math teacher and you want to create an experiment for your class with red, yellow and purple marbles in a bag. You want to theoretical probability of drawing a red marble to be 1/2, the theoretical probability of drawing a yellow to be 1/2, and the theoretical...
*September 14, 2015*

**Chemisrty **

Identify the type of question. Is it a literature research question, observation only question, demonstration question, or investigation question? How would you determine the PH of vinegar using cabbage juice as an indicator? (investigation) Do germaniting seeds produce heat...
*September 14, 2015*

**Algebra**

Katie has a strip of paper 39 inches long. She wants to cut the paper so that one piece is 9 inches shorter than the other. How long should each of the 2 pieces be?
*September 14, 2015*

**math 208**

parking in a student lot cost 3.00 for the first half hour and 1.25 for each hour there after a partial hour is change the same as a full hour what is the longesr time that student can park
*September 14, 2015*

**physics**

Suppose a soccer player kicks the ball from a distance 28 m toward the goal. Find the initial speed of the ball if it just passes over the goal, 2.4 m above the ground, given the initial direction to be 55° above the horizontal.
*September 14, 2015*

**inglesh**

In “The Raven and the First Men: The Beginnings of the Haida,” which evidence best helps the reader infer that the Haida might find it acceptable behavior to play tricks on one another? The story presents Raven’s trick against the Sky Chief in a matter-of-fact ...
*September 14, 2015*

**Maths **

Write this as a single fraction in its simplest possible form. x/yz . y^2x/z . z^2/y please note that the dot "." is equilvalent to a multiplication sign. Remember it needs to be in a single fraction. And can you please tell me step by step so i know for future ...
*September 14, 2015*

**MATHS - please help**

Thankyou so much both ♡
*September 14, 2015*

**MATHS - please help**

The first one you wrote Sorry i should've made it clear
*September 14, 2015*

**MATHS - please help**

Rearrange in the form ax+by+c=0 1) y+4 = 3/5(x-1) Thank you
*September 14, 2015*

**Maths**

Do i multiply everything by 5 first or do I expand?
*September 14, 2015*

**Maths**

Rearrange in the form ax+by+c=0 1) y+4 = 3/5(x-1) Thank you 😘
*September 14, 2015*

**health**

Smooth muscle cannot be controlled consciously and thus acts ________.
*September 14, 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 I just too the quiz and these are all of the correct answers
*September 14, 2015*

**Physics **

A boat traveling at 9.50 m/s relative to the water aims to go straight across a river. If the river is 106.0 m wide and the current in the river is 3.50 m/s, how far downstream will the boat land on the other side of the river? Calculate the answer in meters (m) and rounded to...
*September 14, 2015*

**Algebra**

Answer to page 204
*September 14, 2015*

**math**

3 1/9;2 5/6;-21/4;1 1/5
*September 13, 2015*

**Chemistry**

Determine the Energy and n(i) for the spectral line at 121.6 nm (orange). Given: spectral line: 121.6 nm n(f) = 1 Find Energy and n(i)
*September 13, 2015*

**Calculus**

How can I show that the function F (x)= the integral from 2x to 5x of 1/ t dt is constant on the interval (0, +∞).
*September 13, 2015*

**calculus**

A rock is thrown upward with a speed of 48 feet per second from the edge of a cliff 400 feet above the ground. What is the speed of the rock when it hits the ground? Use acceleration due to gravity as –32 feet per second squared and approximate your answer to 3 decimal ...
*September 13, 2015*

**physics**

A person travels by car from one city to another. She drives for 21.8 min at 67.1 km/h, 13.1 min at 84.6 km/h, 51.4 min at 33.5 km/h, and spends 11.5 min along the way eating lunch and buying gas. Determine the distance between the cities along this route.
*September 13, 2015*

**Chemistry**

a 7.83g sample of hydrocyanic acid contains 0.290g and 4.06g of nitrogen. Find the mass of carbonin a sample of HCN with a mass of 3.37g.
*September 13, 2015*

**math**

what does scale mean
*September 13, 2015*

**government**

I'm not sure
*September 13, 2015*

**government**

why does a nation's economic status affect its attainment of democracy?
*September 13, 2015*

**Physics**

A 0.0500 kg ice cube at -30.0◦C is placed in 0.400 kg of 35.0◦C water in a very well insulated container. What is the final temperature? (Note: how can you check if all the ice melts at equilibrium temperature?)
*September 13, 2015*

**Physics**

A 0.0500 kg ice cube at -30.0◦C is placed in 0.400 kg of 35.0◦C water in a very well insulated container. What is the final temperature? (Note: how can you check if all the ice melts at equilibrium temperature?)
*September 13, 2015*

**Chemistry (Check)**

Q: Number of unpaired electrons in the nitrogen atom. A: 1s^2 2s^2 2p^6. 3 unpaired electrons in the p orbital Q: Number of 4d orbitals. A: 10 Q: Maximum number of electrons that can have n=3 and l=1. A: 1s^2 2s^2 2p^6 3s^2 3p^6. 2 electrons
*September 13, 2015*

**Chemistry (Check)**

Q: Identify all that is incorrect about the set of four quantum numbers and explain why. {-3, 2, 1, 1/2} A. -3 because there can't be a negative orbital. Q: Identify all that is incorrect about the set of four quantum numbers and explain why. { 3, 2, 1/2, 1/2} A. m(l) = 1/...
*September 13, 2015*

**Chemistry (Check)**

Q: Name the group that has a general electron configuration of ns^2 and provide an example of an atom with this general configuration. A: Alkaline Earth Metals and Beryllium [He] 2s^2 Q: Name the group that has a general electron configuration of ns^2np^6 and provide an ...
*September 13, 2015*

**Physics **

6) A school bus moves at 2.2 m/s as it pulls away from the bus stop what is the speed of the bus 20 s later after its speed has increased by 5.225 m/s? 7) The height of a computer screen is 31.25 cm and its width is 47 cm. a) is the area of the screen known to one, two, three...
*September 13, 2015*

**Chemistry**

Determine the energy and n(i) for the spectral line at 121.6 nm (orange). Hint: R(H)=2.18x10^-18 J, c=3.0x10^8, and 1x10^9 nm - 1 m. Line, nm 121.6 E, J ___ n(f) 1 n(i) ___
*September 13, 2015*

**government**

Are state governments unicameral or bicameral?
*September 13, 2015*

**Chemistry (Check)**

The Lyman series. Of the four lines, 91.2nm, 97.2nm, 102.6 nm, and 121.6nm, which one has the A. Highest wavelength? _____ B. Highest energy? ______ C. Highest frequency?_(1)____ which equals__(2)____ My answers A. 91.2 B. 121.6 C. (1) 121.6 C. (2) energy
*September 13, 2015*

**Maths **

Rearrange in the form ax+by+c=0 1) y=-2x/7 - 6 2) y+4 = 3/5(x-1) Please help Thankyou 😘
*September 13, 2015*

**Physics**

What does the prefix kilo means - kilo meand one thousand or 10^3 How can this prefix be used to modify the description of an obstacle course that is 1450 m long??
*September 13, 2015*

**Physics **

how are the fundamental laws and principles of physics related to the complexity that we see in nature? 2) How do the laws of physics apply to other sciences such ad biology, chemistry, and earth science? Give a specific example to show the connection - is it because there ...
*September 13, 2015*

**Maths**

I just worked out the second answer. I got (X-1)(x+6) Is this also correct?
*September 13, 2015*

**Maths **

Factorise as far as possible: 1) 2a^2b + 8a^2b^2 The answer i got for this is 2ab(a+4ab). I'm not entirely sure if this is fully factorised or not. Can you please correct me if i am wrong. 2) x^2 + 5x - 6 I'm not sure how i can do this. Can someone please explain how ...
*September 13, 2015*

**Difficult algebriac word problem**

The banana
*September 13, 2015*

**mathematics**

find orthogonal trajectory of family of circles x^2+y^2+2fy+1=0.
*September 13, 2015*

**Physics**

A 4000 kg trailer is towed up a hill with a 5% grade. If the towing truck starts from rest at the bottom of the hill and reaches a speed of 12 m/s at the top of the hill, how much is the towing force. The road from the bottom to the top of the hill is straight with a length of...
*September 12, 2015*

**college algebra**

Income=.12*Sales + 11500 m is the slope, in this case .12, x is the amount of sales in dollars
*September 12, 2015*

**pre algebra**

31+0+(-2)
*September 12, 2015*

**Math**

Thanks Damon!! :)
*September 12, 2015*

**Math**

Four members of a club decide to buy shares in a company. They will divide the cost equally. Two new members join the club and agree to contribute to the shares. Their contribution results in a savings of $200 for each of the original four members. How much do the shares cost?
*September 12, 2015*

**science**

mcakcancsajlcnasl
*September 12, 2015*

**science**

lll
*September 12, 2015*

**Duck Ponds High School**

Water pollution
*September 12, 2015*

**accounting**

bought goods on credit from Tom with a list price of 2000, less 10% trade discount
*September 12, 2015*

**music and movement**

It's B.
*September 11, 2015*