Thursday
April 24, 2014

Posts by jessica


Total # Posts: 2,569

mathematics
Given that log5 3=0.683 and log5 7=1.209.without using calculator,evaluate (a) log5 1.4 b)log7 75 c) log3 125

math
log4(2x+4)-3 =log4 3

Math
Some fleet car license plates contain 4 numbers followed by 3 letters and then another 3 numbers. If this were the standard fleet car license plate and there are no other constraints, the number of plates that could be manufactured is

Physics multiple choice questions
1. Which of the following energy transformations best describes the operation of a solar powered battery charger? (a) electrical energy --> thermal energy --> kinetic energy (b) nuclear energy --> potential energy --> chemical energy (c) thermal energy --> elast...

Physics multiple choice questions
1. Which of the following energy transformations best describes the operation of a solar powered battery charger? (a) electrical energy --> thermal energy --> kinetic energy (b) nuclear energy --> potential energy --> chemical energy (c) thermal energy --> elast...

Maths, Biology, Business Economics
Hi I want to study Psychotherapy and be a Dance therapist but cannot find any courses for Dance Therapy in South Africa.

Physics -- check answers please
1. Which of the following energy transformations best describes the operation of a solar powered battery charger? (a) electrical energy --> thermal energy --> kinetic energy (b) nuclear energy --> potential energy --> chemical energy (c) thermal energy --> elast...

math
If a 1,000 unit vitamin D is equal to 10 glasses of milk how many glasses are in a 50,000 unit vitamin D?

optimization
Farmer taylor wants to fence a rectangular area of 1800 square feet and divided into 3 parts by fencing parallel to the shorter side. What is the minimum amount of fencing for this job?

Physics -- check answers please
1. A boy pushes a car to slow it down while the car is rolling horizontally down the road. If the boy pushes backwards on the car with 10N of force as the car rolls forward 3.0m, the amount of work done by the boy is: a)-30 b)0 c)3.3 J d)30 N•m e)300J my answer: a 2. what...

Accounting
When common stock has a par value of $2 and a market value of $15: 1.) the liability of the stockholders is $13 per share 2.) there will be additional paid-in capital of $13 per share 3.) common stock will be credited for $15 per share 4.) the paid-in capital will equal the $2...

Accounting
An estimated liability: 1. Is an unknown liability of a certain amount. 2. Is a known obligation of an uncertain amount that can be reasonably estimated. 3. Is a liability that may occur if a future event occurs. 4. Is not recorded until the amount is known for certain. (PLEAS...

Accounting
Internal control devices for banking activities include signature cards, deposit tickets, checks, and bank statements. 01.) True 02.) False True or False?

Accounting
An asset's cost includes all normal and reasonable expenditures necessary to get the asset in place and ready for its intended use. 01.) True 02.) False True or False?

Accounting
Problems: Please show all calculations. Claudette, Inc., provides warranties for many of its products. The January 1, 2014, balance of the Estimated Warranty Liability account was $38,500. Based on an analysis of warranty claims during the past several years, this year’s ...

Math
solve for y 2y = 18x y - 6 = 2x trying to help with homework and at a loss here.

Math
solve for y 3x + y = 2 Trying to help out my daughter, if you could show me steps that would be wonderful. Thank You

Chemistry
10.1g of potassium nitrate were dissolved in 50cm^3 of water. the temperature fell by 16 degrees celsius. Determine (a) the number of moles of potassium nitrate dissolve in 50cm^3 of water. (b) heat change that would be produced if one mole of potassium Nitrate dissolve comple...

Chemistry
3.25g of zinc was added to 50cm^3 of a 4.0 molar dm^-3 HCl. When the reaction was completed the temperature rose by 28 degrees celcius. (a) Is the reaction exothermic or endothermic? (b)All the zinc dissolve in this reaction. How many moles of zinc reacted? (c) How many moles ...

statistics
help i do not understand how to solve this question: assume that blood pressure readings are normally distributed with a mean of 111 and standard deviation of 7. A researcher wishes to select people for a study but wants to exclude the top and bottom 10 percent. What would be ...

statistics
assume that blood pressure readings are normally distributed with a mean of 111 and standard deviation of 7. A researcher wishes to select people for a study but wants to exclude the top and bottom 10 percent. What would be the upper and lower readings to qualify people to par...

language of medicine medical billing and coding
How does the musculoskeletal system change from birth to adulthood and what are the steps that the system goes through from childhood to adulthood to reach 206 bones?

Help pleasssseee!!!
1. Which of the following describes an example of land reclamation? A. After an area is mined for copper, the soil is replaced and new plants are planted B. After a forest is clear-cut, desertification occurs C. After a forest is clear-cut, it is mined for copper D. After an a...

America history
6. In Mesoamerica, the shift to basic crops, including corn, beans, and squash, is referred to as the _______ revolution.

algebra 1
The sum of three consecutive integers is -204 . What is the largest integer?

Business Calc
We deposit $19000 into an account earning 3% interest compounded semiannually. How many years will it take for the account to grow to $47500 ? Round to 2 decimal places.

Pre-Algebra
How do you find the surface area of a cylinder and a cone?

Chemistry
Many portable gas heaters and grills use propane, C3H8(g). Using enthalpies of formation, calculate the quantity of heat produced when 17.0g of propane is completely combusted in air under standard conditions. Assume that liquid water is forming.

Science -CHECK MY WORK-

world history
Your Welcome! :)

world history
Why was it built? Answer..... Shortcuts, Land transportation the entire way. Ship through the Mediterranean and off load the ship, move the goods by land to the Red Sea or Arabian Gulf and reload on a ship.

math
A sweater that reg. sold for $48 was put onsale for 33 1/3% off. what is the sale price?

math
Dylan's Bicycle Shop offers a new bicycle on sale for $259.92 after a 10% markdown. What was the cost of the bicycle to Dylan if the markup was 30% based on the cost? (Round to the nearest cent.)

college busines math
The Mills Lunch Shop prepares fresh take-out entrees each day. On Tuesday, 40 baked chicken dinners were prepared at a cost of $3.20 each. A 20% spoilage rate is anticipated. Mills Lunch Shop sells the dinners at an 80% markup based on cost. They decided to offer a $1.00-off c...

Help please!!
Oh so third?

Help please!!
Read the sentence below. Harry didn't know that his actions would affect so many people. He now regretted his choice. This is an example of ____________. A. first-person point of view<--- B. second-person point of view C. third-person point of view

Help Pleasee!!
1.Select the community activity that is a healthy choice to promote fitness for all ages A.annual 5K fun run for charity<--- B.annual state fair C.monthly movie in the park D.monthly laser light show at the planetarium 2.Mollie is well respected by her teammates even though...

English
Where can I search poverty in my community and its poverty statics for their respective areas? For instance, MN. Thank you.

Social studies
ok thanks :)

Social studies
C A D D B C D I don't think any of them are right I did the best I could.

Social studies
I have tried to answer these im just not sure help plz. 1. Which word best describes modern life for Japanese teenagers such as Asuka? relaxed crowded isolated traditional 2. Tropical storms often hit Japan during the ________. summer winter spring fall 3. Which of Japan's...

history
If you were one of the new immigrants who arrived in America in the 1880s, it's most likely that you would have been A. Italian and Catholic. B. Irish and Protestant. C. German and Lutheran. D. Swedish and Protestant. I think it's b.

Math-- Check My Answers Please
Thanks!

Math-- Check My Answers Please
Bonnie has a rectangular photographic print that is 5 inches wide and 7 inches long. If she multiplies both the length and width by 1.5, how will the perimeter of the print increase? a.) It will be 1.5 times the original size. b.) It will be 1.75 times the original size. *****...

Ap chem-Bases
Calculate the pH of a 0.2M solution of Triethylamine, (C2H5)3N, with a Kb of 4.0x10^-4

Ap chem-Bases
Calculate the pH of a 0.2M solution of Triethylamine, (C2H5)3N, with a Kb of 4.0x10^-4

Chemistry- acids/bases
Find the concentration of OH- of a solution of 45.0mL of 0.0921 M Ba(OH)2 diluted with enough water to make 350.0 mL of solution.

Chemistry- acids/bases
Find the concentration of OH- of a solution of 45.0mL of 0.0921 M Ba(OH)2 diluted with enough water to make 350.0 mL of solution.

Statistics in Psychology
19. You measure how much people are initially attracted to a person of the opposite sex and how anxious they become during their first date. For the following ratio data, answer the questions below. Participant Attraction X Anxiety Y 1 2 8 2 6 14 3 1 5 4 3 8 5 6 10 6 9 15 7 6 ...

Statistics
A researcher measures how positive a person’s mood is and how creative he or she is, obtaining the following interval scores: Participant Mood X Creativity Y 1 10 7 2 8 6 3 9 11 4 6 4 5 5 5 6 3 7 7 7 4 8 2 5 9 4 6 10 1 4 (a) Compute the statistic that summarizes this rela...

Statistics
(a) For the relationship in question 19, what is the proportion of variance accounted for? (b) What is the proportion of variance not accounted for? (c) Why or why not is this a valuable relationship?

Math
Kyle had 5/7 lb of birdseeds. Each bird feeder holds 1/5 lb of seed. Can kyle fill 5 bird feeders?

Chemistry
That makes sense! Thank you so much for your help! You really have no idea how much I appreciate it!

Chemistry
That makes sense! Thank you so much for your help! You really have no idea how much I appreciate it!

Chemistry
The question about the percent error and the reason for recovering more than the original mass is not asked in my lab questions. Being a math wiz, I know I did my calculations right and I even asked a fellow classmate and they too had a similar outcome. I am really just curious!

Chemistry
NaCl 36.4% SiO2 36.4% CaCO3 40.9% Percent recovery 113.7% Percent error 13.7% Original mass sample is 2.2g recovered masses NaCl 0.8g SiO2 0.8g CaCO3 0.9g total mass recovered 2.5g

Chemistry
Dr. Bob, I think youre right. I think I am over thinking this!

Chemistry
The CaCo3 and SiO2 are both solids so they remain in the filter. From there transfer it to a preweighed evaporation dish and add 3M HCl. From there we have a solid SiO2 and the supernatant liquid that we pour into a beaker and heat off to boiling and add 1M K2CO3. From there w...

Chemistry
I think I understand the SiO2 having a smaller amount present because the SiO2 most will absorb into the atmosphere due to the amounts of oxygen in the mixture to the oxygen level present in the atmosphere. I think the NaCl mass changes due to the heating process and alters th...

Chemistry
Beaker with the mixture, add distilled water, stir, pour through filered funnel= residue and filtrate filrate is boiled over a hot plate and the water boils off leaving just the NaCl

Chemistry
I did a lab the other day where we separated a mixture of NaCl, SiO2, and CaCO3. The Mixture was made by my professor and we did not know the original amounts of each compound. After recovering all of the compounds we found that there was.. 36.4% NaCl 36.4% SiO2 40.9% CaCO3 th...

Math
John has 18 coins worth $1.25. Some are nickels and dimes. How many of each does he have?

Physics
A 1.40 kg skateboard is coasting along the pavement at a speed of 5.5 m/s when a 0.800 kg cat drops from a tree vertically downward onto the skateboard. What is the speed of the skateboard-cat combination.

Chemistry
What mass in grams of a 0.500 m(molal) solution of sodium acetate, CH3CO2Na, in water would you use to obtain 0.200mol of sodium acetate?

Calculus
Find an equation of the plane. The plane that passes through (8, 0, −2)and contains the line x = 6 − 2t, y = 3 + 5t, z = 3 + 2t

maths
1 curry and 1 tea cost £4. 2 curries and 2 puddings cost £9. 1 pudding and 2 teas cost £2. What do you have to pay in total for 1 curry, 1 pudding and 1 tea? What does each item cost on its own?

math
1 curry and 1 tea cost £4. 2 curries and 2 puddings cost £9. 1 pudding and 2 teas cost £2. What do you have to pay in total for 1 curry, 1 pudding and 1 tea? What does each item cost on its own?

Science ~CHECK MY WORK PLEASE~
A scientist is trying to determine the identity of an element. It is highly reactive in water and forms an ionic bond with chlorine. It is also very shiny. The element is likely A. From Group 17 ********** B. From Group 1 C. From Group 15 D. A Noble Gas Which is most likely to...

Science -CHECK MY WORK-
Subject: The Periodic Table

Science -CHECK MY WORK-
a.) How can you describe the location of vanadium (V, atomic number 23) on the periodic table? Choose all that apply. 1. period 5, group 4 <<<My choices>>> 2. period 4, group 5 3. lanthanum series <<<My choices>>> 4. nonmetals 5. transition ...

Algebra
Systems of equation 1. +2y=5 8 -6y=3x-15 2).p-2q=4 2q=p+2 Solve the equations? I am stuck on how to do these last to problems thanks for the help

Physic II
Explain how objects can get charged by Friction.

Physic II
Explain how objects can get charged by Friction.

Equation solving
Perpendicular. To x-3y=2 and contains ( 2,4) 2). That is parallel to 2x+5y=4 I don't get how to solve and use y=Mx+b

Eng
I have to do an assignment on Ecosystems perspective and social work. I'm asked to write how they would apply the in ecosystems working with a community issue. How should I start my essay? I need ideas and issues to write and what exactly is ecosystem perspectives? Thank you!

Accounting
it is c do you need any help on anything else and my name is Jessica

Math
1. Marissa is a photographer. She sells framed photographs for $100 each and greeting cards for $5 each. The materials for each framed photograph cost $30, and the materials for each greeting card cost $2. Marissa can sell up to 8 framed photographs and 40 greeting cards each ...

Chemistry
Which of the following must be the same before and after a chemical reaction? Answer: The sum of the masses of all substances involved and the number of atoms of each type involved. WHY?

Chemistry
Assume a baker of pure water has been boiling for 30 minutes. What is in the bubbles in the boiling water? Answer: water vapor. WHY?

Chemistry
Heat is given off when hydrogen burns in air according to the equation: 2H2 + O2 ---> 2H2) What is responsible for the heat? I know the answer is froming hydrogen-oxygen bonds gives off energy, but why?

Chemistry
Iron combines with oxygen and water from the air to form rust. If an iron nail were allowed to rust completely, one should find that the rust weighs: I know the answer is the rust should way more than the nail it came from but can someone explain why please!

business math
What would be the compound amount after 19 years an investment of 42,000 with an 11% interest rate compounded annually?

Pre-Algebra
How do you solve 4x+4=9x-36? I understand that you need to get the variables alone but to I add or subtract 9x to both sides?

Chemistry/Math
so is my answer correct?

Chemistry/Math
The density of water is 1 g/cm^3. What is the mass of 7.500 liters of water reported in kilograms? I got 7.5kg. Is this correct?

Health
Pulmonary circulation transports oxygen-poor blood from the right ventricle to the ________, where blood picks up a new blood supply. A. Heart B. Lungs C. Brain D. Extremities I said A but it was wrong. I want to say B

health
Neurons carry out the functions of the nervous system by conducting ________. A. Nerve stimulation B. Nerve tissue development C. Nerve impulses D. All of the above I wanna say C, but I want to make sure I am right.

math
i need help on properties of arithmetic

math
Fran Molley is married, claims five withholding allowances, and earned 3,500 gross per month in edition to federal income tax, social security, and Medicare withholding , Fran pay 2.1% state income tax, and 1/2% for state disability insurance ( both based on her gross income),...

math
Arturo Muina is the captain of a charter fishing boat. He is paid salary of 140 per day He also averages tips amounting to 12% of 475 daily charter rate. Last month during a fishing tournament, Arturo worked 22 days. What were his total gross earnings for the month?

Government
What issues do liberals and conservatives support and what constituency do they serve?

I NEED HELP TOO!!!
how did you get part a and b???

Geometry
Kelly drew four points A, B, C, and D in her notebook. A straight line joins points A and C. Another straight line joins A and B. A point D is located on the left of the line AB Kelly made the following statements about the points. Statement 1: There is at least one more point...

Biology
Can someone provide an example of positive and negative control in a very easy and simple example?

Math
the area of a yard is 420 ft. what is the probability that any leaf landing in the yard will land ina circular wading pool that has a diameter of 14 ft?

Calculus
The first boat is sailing towards the North at the speed of 6 km per hour and sees that another boat is heading east at the speed of 5 km per hour. The second boat is to the northwest of the first boat. what is the minimum distance between two boats, assuming that they do not ...

Math
2/5 is 0.4. Multiply by 100, you get 40% -> 40% of the figure is shaded. so the percentage of the figure that is not shaded is 100% - 40% = 60%

health
what does hiv stand for

maths probability
Consider an experiment with four possible outcomes which we denote by Wi for i = 1,2,3,4. Sample space is Omega = {w1,w2,w3,w4}. Consider events A= {w1}, B = {w1,w2}, C = {w1,w2,w3} and D = {w2,w4}. Given that P(A) = 1/10, P(B) = 1/2, P(C) = 7/10, compute P(D)

Chemistry
At a certain temperature, the Kp for the decomposition of H2S is 0.774. H2S(g) <---> H2(g)+S(g) Initially, only H2S is present at a pressure of 0.120 atm in a closed container. What is the total pressure in the container at equilibrium?

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