Wednesday

May 6, 2015

May 6, 2015

Total # Posts: 2,613

**science**

thx Ms. Sue :)
*May 5, 2015*

**science**

Earth's energy sources include both nonrenewable and renewable resources. Name at least three sources of energy that could be used in your house. The describe the ideal energy source for generating most of your home's electricity, and explain why you chose that source...
*May 5, 2015*

**chemistry**

what is a mole
*May 5, 2015*

**Chemistry**

250.0 mg solid magnesium placed in 9.1 g aqueous zinc nitrate... What is the limiting reagent? I balanced the equation: Mg (s) + 2HNO3 (aq) -> Mg(NO3)2 (aq) + H2 (g) 250 mg 9.1 g
*May 1, 2015*

**math**

jamie is joining a music club as part of her 4-cd introductory package she can choose from 12 rock selection, 10 alternative selection 7 country selections and 5 classical selection if jamie chooses on selection from each category how many ways can she choose her introductory ...
*April 29, 2015*

**math**

A study of two types of weed killers was done on two identical weed plots. One weed killer killed 15% more weeds than the other. This difference was significant at the 0.05 level. What does this mean? A. The improvement was due to the fact that there were more weeds in one ...
*April 17, 2015*

**math**

If you have a twelve gallon bucket, a seven gallon bucket, and a six gallon bucket, how can you get exactly nine gallons into one bucket
*April 16, 2015*

**algebra**

the isotope has a very short life of 13 half-life days. estimate the percentage of the original amount of the isotope released by the explosion that remains 3 days after the explosion?
*April 16, 2015*

**statistics**

The distribution of B.A. degrees conferred by a local college is listed below, by major. Major Frequency English 2073 Mathematics 2164 Chemistry 318 Physics 856 Liberal Arts 1358 Business 1676 Engineering 868 9313 What is the probability that a randomly selected degree is not ...
*April 16, 2015*

**biology**

Ms. Sue, woyls it be B?
*April 13, 2015*

**geometry**

have 2 || lines C and d. lines intersect lines are a and b. On a, has 2 alternate interior <s 95 and x; 2 al. exterior <s 95 and 85 degrees. On b, consecutive interior <s 72 and y. What is x and y. Please explain reasoning in paragraph proof.
*April 12, 2015*

**Integration**

Integrate: ∫ x^2(x^2+1)sqrt(4-2x^3-x^4) dx
*April 11, 2015*

**physics**

A cat usually lands on its feet regardless of the position from which it is dropped. A slow-motion film of a cat falling shows that the upper half of its body twists in one direction while the lower half twists in the opposite direction. (See figure below.) Why does this type ...
*April 10, 2015*

**Calculus**

List x1, x2, x3, x4 where xi is the right endpoint of the four equal intervals used to estimate the area under the curve of f(x) between x = 3 and x = 5. 3, 3.5, 4, 4.5 3, 3.2, 4.6, 5 3.5, 4, 4.5, 5 3.25, 3.75, 4.25, 4.75 my answer was a because i kept getting numbers like 3, ...
*April 3, 2015*

**math**

1/4 of henry sticker is equal to 2/3 of daisy. difference in number of sticker each of them has is 135. how many stickers do they have in all?
*April 2, 2015*

**math**

Sam and Jill had 576 stamps in all. Sam gave 1/7 of his stamps to Jill. Then Jill gave 1/4 of the total number of stamps she now had to Sam. In the end, both of them had the same number of stamps. What was the difference in the number of stamps they each had at first?
*April 2, 2015*

**math**

Esth had five times as many cards as Rich. Esth gave 1/4 of her cards to Rich. Rich. gave 1/6 of his cards to Esth in return. In the end, Esth had 90 cards more than Rich. How many cards did Esth have at first?
*April 2, 2015*

**Algebra 2**

Use trigonometric identities to solve each equation for the given domain. sin 2θ = -cos θ for 0 ≤ θ < 2π *Anyone who has any idea which identity to use is welcome to help
*April 1, 2015*

**Math / Algebra 2**

Use trigonometric identities to solve each equation for the given domain. sin 2θ = -cos θ for 0 ≤ θ < 2π *Anyone who has any idea which identity to use is welcome to help.
*April 1, 2015*

**algebra**

The angle of elevation from the tip of the shadow to the top of the tree is 36°. Find the distance from the top of the tree to the tip of the shadow. Round the answer to the nearest tenth.
*March 30, 2015*

**math**

it doe snot say
*March 30, 2015*

**math**

An office supply company is shipping a case of wooden pencils to a store. there are 64 boxes of pencils in the case. If each of pencils weighs 2.5 ounces, what is the weight, in pounds, of the case of wooden pencils?
*March 30, 2015*

**math**

Please show your work. Tutors will not do your homework for you. Please show your work for any question that you are posting.
*March 29, 2015*

**chemistry**

dissolving 4.022 g of a salt in 100 mL of water changes temperature by -1.2^oC: what is the heat absorbed? The specific heat of water is 4.184 J/(g*C)
*March 28, 2015*

**Science**

thx reed :)
*March 19, 2015*

**Science**

Ok I will go back through my lesson and check #3 thx :)
*March 19, 2015*

**Science**

1. Which type of weather technology often carries cameras that can make images of Earth's surface, clouds, and snow cover? A. weather balloon B. weather satellite**** C. computer D. automated weather station 2. Why are weather forecasts more reliable now compared to ...
*March 19, 2015*

**math**

How many square yards of carpeting are needed to cover the floor of a rectangular room that is 21 ft. long and 12 ft. wide?
*March 17, 2015*

**Accounting **

E13 Selected account balances of the Lakeside Grocery Store for the year ended December 31, 20xx, follow. Beginning merchandise inventory was $ 26,000, and ending merchandise inventory is $ 22,000. Prepare closing entries, assuming that the owner of Lakeside Grocery, John ...
*March 16, 2015*

**Statistics**

Okay, but what if the maximum that each box can hold is 2?
*March 14, 2015*

**Statistics**

How many different ways can you put 3 distinguishable things in 10 boxes?
*March 14, 2015*

**SOCIAL STDIES HELP! 8th**

Connetions
*March 11, 2015*

**Chemistry**

What is the pH of a solution made by mixing equal vlumes of .10 M HC2H3O2, .1 M NaOH, and .05 M HCl?
*March 10, 2015*

**physics**

incorrect
*March 10, 2015*

**physics**

A plastic rod is rubbed against a wool shirt, thereby acquiring a charge of −4.9 µC. How many electrons are transferred from the wool shirt to the plastic rod? The elemental charge is 1.6 × 10−19 C.
*March 10, 2015*

**Art**

SORRY NUMBER TWO IS C
*March 9, 2015*

**Art**

THE ANSWER ARE NUMBER ONE IS D AND NUMBER TWO IS B
*March 9, 2015*

**Chemistry**

A .2688-g sample of a monoprotic acid neutralizes 16.4 mL of .08133 M kOH solution, calculate the molar mass of the solution? First of all how can I calculate the molar mass?
*March 5, 2015*

**math**

A rectangular tank measures 30cm by 15 cm by 20 cm. It contains water to a depth of 15 cm. How many metal cubes of edge 5 cm need to be placed in the water to raise the water level to the brim of the tank?
*March 4, 2015*

**Science**

What is a conducter
*February 26, 2015*

**Physics 1**

192.70
*February 26, 2015*

**Science**

What are insulaters
*February 26, 2015*

**chemistry**

An ice cube weighing 22.7 g at a temperature of 0.0°C is added to 125 mL of water at 27.1°C in an insulated container. What will be the final temperature after the ice has melted?
*February 22, 2015*

**Geometery**

From Pyth thereom,AB =root (35^2+60^2)= 5 root(193) Height CN=AC*CB/ AB= 60*35/ 5 root(193)= 420/root(193) Now find CT Tan40 = CT/ DC But DC= 60 root 2 ( it is hyp of rt triangle ADC) CT= DC tan 40= 60 root 2 * 0.84 Angle of elevation of TN is Arc Tan(CT/CN)= Arc tan (60 root ...
*February 22, 2015*

**Geometery**

A, B, C and D are on horizontal level ground and CT is vertical pole. B is 35 m due east of C, A is 60 m South of C and D is 60 m West of A. Calculate the angle of elevation of T from N. I m really suck...plz help
*February 22, 2015*

**chemistry**

How many grams of water are required to completely hydrolyze 0.54 grams of lidocaine? What type of be equation should be used?
*February 19, 2015*

**Math**

in square meters plz
*February 11, 2015*

**Math**

ok so how do I solve the problem
*February 11, 2015*

**Math**

tiles cost 28 per square meter. How much will it cost to cover the countertop with new tile
*February 11, 2015*

**Math**

what is the area of the countertop in square meters
*February 11, 2015*

**Math**

A countertop is 16 feet long and 3 feet wide
*February 11, 2015*

**Chemistry**

Are you in Mr. Leingang's class?
*February 10, 2015*

**chemistry**

If the intial rate of the reaction produces 2 moles of water vapor, H2O, per second, what is the rate at which oxygen, O2, is consumed initially?
*February 10, 2015*

**Calculus**

Graph the function f(x)=x+4/x Graph the secant line that passes through the points (1,5) and (8,8.5) on the same set of axes Find the number c that satisfies the conclusion of the Mean Value Theorem for f on [1,8] c= Notice that if you graph the tangent line to the point (c,f(...
*February 8, 2015*

**Math**

Hey Daisy. Plot your data points on desmos it'll help. Once plotted, this question is awfully easy.
*February 7, 2015*

**Physics**

A stationary observer hears a sound with a frequency of 450 Hz from an approaching car. If the car emits the sound at a frequency of 360 Hz, what would be the speed of the car? (Speed of sound 340 m/s)
*February 6, 2015*

**CHEM**

what is the mass percentage if you dissolve 0.659 mol of citric acid, C6H8O7, in 1.00 kg of water.
*February 1, 2015*

**physicss**

A 0.145 kg baseball pitched at 44.0 m/s is hit on a horizontal line drive straight back toward the pitcher at 52.0 m/s. If the contact time between bat and ball is 3.00 ✕ 10-3 s, calculate the average force between the ball and bat during contact.
*January 29, 2015*

**Physics **

A spring with an unstrained length of 0.075 m and a spring constant of 2.7 N/m hangs vertically downward from the ceiling. A uniform electric field directed vertically upward fills the region containing the spring. A sphere with a mass of 4.84 10-3 kg and a net charge of +7.0...
*January 28, 2015*

**physics**

SOMEONE HELP ME PLEASE
*January 27, 2015*

**physics**

A boy on a 2.2 kg skateboard initially at rest tosses a(n) 8.4 kg jug of water in the forward direction. If the jug has a speed of 3.0 m/s relative to the ground and the boy and skateboard move in the opposite direction at 0.60 m/s, find the boy’s mass. Answer in units of kg
*January 27, 2015*

**English**

I have to pick a topic for an argumentative research paper, but when I think about different topics I realize that all of my ideas and support on the subjects are from other people's ideas that I have read or heard. So how do I come up with original ideas for a topic ...
*January 27, 2015*

**Math**

Samuel and Jason 3/4 of the combined earnings from Wednesday to buy a gift. how much do they spend? Is there enough left over from Wednesday's earnings to buy a card that costs $3.25?
*January 22, 2015*

**math**

repost find unknown number in the equation 9/10 - x = 1/5
*January 21, 2015*

**math**

find unknown number in the following equation 9/10 - x +1/5 what is x
*January 21, 2015*

**math**

the wheel of a bicycle has a diameterof 72 cm and are rotating with an angular velocity of 12 rad/s. determine how much time the bicycle takes to travel 100m.
*January 21, 2015*

**Math**

First week sells 6 chairs for $80 each. Next week, if chair is not sold, it will sell for 0.85 times previous week's price. Store needs to sell 6 chairs for total of $270 to make a profit. what is the last week in which all 6 chairs could be sold so that the store makes a ...
*January 20, 2015*

**English help**

I think it's hard news article.
*January 7, 2015*

**LANGUAGE ARTS !! 8TH GRADE**

YOU ARE WRONG OMFG WHY WHY WHY WHY WHY WHYW HYW LIESSSSSSSSSSSSSSSSSSSSSSS
*January 6, 2015*

**physics**

By the way, the equation is: Fg = GM/r^2 Where G = Gravitational Constant (6.67 * 10^-11) M = Earth's mass r = Earth's radius The givens are: Earth's mass = 5.98 * 10^24 kg Earth's radius = 6.38 * 10^6 m
*January 5, 2015*

**physics**

What is the distance from the earth's center to a point where your weight would be 1/25 of what you weigh at the surface?
*January 5, 2015*

**Quick Question**

When you have to pay for something weekly, does that mean every end of the week?
*January 3, 2015*

**economics**

Mutual funds are attractive to small investors because (a) the funds offer a guaranteed return on investment (b) the funds are insured by an agency of the US government (c) the funds offer the opportunity to share in an investment in a variety of stocks and bonds (d) investors...
*December 21, 2014*

**math**

t(n)
*December 17, 2014*

**math**

the third term of a geometric sequence is 25 and the eighth term is 25/32. find a, r, and t
*December 17, 2014*

**math**

that's dumb is there a different way to do it? with a formula?
*December 17, 2014*

**math**

an employee is paid $3600 for the first month. she is paid an additional 1% at the end of the second month, which means a total of $3636. she continues to receive a 1% raise each month for a full year. what is her total salary at the end of the year?
*December 17, 2014*

**Stat**

Assume that a procedure yields a binomial distribution with a trial repeated n times. Use a binomial probabilities table to find the probability of x successes given the probability p of the success on a given trial N=9 X=0 p=0.30
*December 17, 2014*

**math help**

thank you !
*December 16, 2014*

**chemistry. please help drboz222**

Calculate the oxygen ppm concentration of a 3.50 kg sample of lake water that comtains 2.34 mg of dissolved oxygen
*December 16, 2014*

**Economics**

What are two reasons why the values of corporations fluctuate? Explain. My answer: Competition and events in the world
*December 15, 2014*

**language arts**

GG, your lack of grammar and intelligence is very amusing.
*December 15, 2014*

**Math **

A fence 12ft high runs parallel to a tall building at a distance of 2ft from the building. What is the length of the shortest ladder that will reach from the ground over the fence to the wall of the building?
*December 13, 2014*

**Algebra**

James, Karen, and Lou are hiking. Lou forgot to bring any water. James brought 2 gallons of water and Karen brought 1 and 3/4 gallons of water. The three of them agree to divide all the water equally among them. Lou gives $2 for the water he receives, which James and Karen ...
*December 11, 2014*

**Algebra**

Our basketball team has finished 80% of its season, during which we won 40% of the games we played. What percent of the remainder of our games must we win in order to finish the season with the same number of wins as losses?
*December 7, 2014*

**ratio and rates**

Gina's art teacher mixes 9 pints of yellow paint with 6 pints of blue paint to create green paint. Gina mixes 4 pints of yellow paint with 3 pints of blue paint.
*December 7, 2014*

**physics**

Three blocks A, B, and C are connected by two massless strings passing over smooth pulleys as shown below, with the 3.4-kg block on a smooth horizontal surface. Calculate the tension in the strings connecting A and B, and, B and C.
*December 5, 2014*

**Chemistry **

Kc is 1.67 × 1020 at 25°C for the formation of iron(III) oxalate complex ion: Fe3+(aq) + 3 C2O42-(aq) [Fe(C2O4)3]3-(aq). If 0.0200 M Fe3+ is initially mixed with 1.00 M oxalate ion, what is the concentration of Fe3+ ion at equilibrium?
*December 2, 2014*

**Chemistry**

The equilibrium constant, Kp, equals 3.40 for the isomerization reaction: cis-2-butene trans-2-butene. If a flask initially contains 0.250 atm of cis-2-butene and 0.145 atm of trans-2-butene, what is the equilibrium pressure of each gas?
*December 2, 2014*

**Science.. Need help ASAP!**

I have the exact same test are u connexus stident
*December 1, 2014*

**Algebra**

(7.8*10 to the 12th power)*800=(7.8*10 to the 10th power)*80,000 Directions:tell whether each equation is true or false. if false, write the inequality in like terms I don't remember how to start multiplying.
*November 30, 2014*

**Math**

ASHLEY BORROWED 3 BOOKS FROM THE LIBRARY. THIS WAS 25% SHE CHECKED OUT. HOW MANY BOOKS DID SHE CHECK OUT
*November 26, 2014*

**Physics **

A 85-Kg firefighter climbs up a ladder at a constant speed of 2.5 m/s. What average power does the firefighter expend to overcome gravity?
*November 25, 2014*

**math**

what are the steps in determining how to maximize the area of a rectangle given a specific perimeter?
*November 23, 2014*

**math**

what is 1/3 divide 5/8
*November 22, 2014*

**physics**

A solid disk rotates in the horizontal plane at an angular velocity of 0.040 rad/s with respect to an axis perpendicular to the disk at its center. The moment of inertia of the disk is 0.13 kg·m2. From above, sand is dropped straight down onto this rotating disk, so ...
*November 16, 2014*

**Chemistry Buffers**

Write reactions showing how each of the following buffers would neutralize added HCl. HF and NaF Express your answer as a balanced chemical equation. Identify all of the phases in your answer. HC2H3O2 and KC2H3O2 Express your answer as a balanced chemical equation. Identify ...
*November 16, 2014*

**physics**

A ball with radius 12cm rolls on a level surface, and the translational speed of the center of mass is 0.35 m/s. What is the angular speed about the center of mass if the ball rolls without slipping?
*November 16, 2014*

**math fractions**

•math - Ms. Sue, Sunday, November 16, 2014 at 12:39pm 12 •math - bob, Sunday, November 16, 2014 at 12:56pm Ms. Sue can you tell me how you got that answer please. •math - Ms. Sue, Sunday, November 16, 2014 at 1:09pm Multiples of 6: 6, 12, 18, 24 Multiples of 4: ...
*November 16, 2014*