Wednesday
May 6, 2015

Posts by bob


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

math
no
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

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