Wednesday

July 29, 2015

July 29, 2015

Total # Posts: 3,146

**math**

or does the braces union each other so it would be {2,4,6,7,8,10}?
*October 9, 2013*

**Physics**

In proton-beam therapy, a high-energy beam of protons is fired at a tumor. The protons come to rest in the tumor, depositing their kinetic energy and breaking apart the tumor’s DNA, thus killing its cells. For one patient, it is desired that 0.10 J of proton energy be ...
*October 6, 2013*

**Statistics**

How do I find the deviation of each x-value from the expected value of 0.97? The chart looks like this... x P(x) x-u 0 0.24 ? 1 0.55 ? 2 0.21 ?
*October 6, 2013*

**Psychology**

Please check my answers... 1. Asthma is associated with environmental conditions. True 2. Only one-half of U.S. children with asthma follow their doctor's advice about medication. False 3. The percentage of overweight children has increased only marginally in the past 20 ...
*October 6, 2013*

**Alegbra**

A baseball team has home games on Thursday and Saturday. The two games together earn $4571.50 for team. Thursdays games generates $68.50 less than Saturday's game. How many was taken in each games? How much did Thursday's game generate?
*October 6, 2013*

**Alegbra**

In actor inveseted in some money at 8% and 27,000.00 more than 3 times the amount of 12%, The annual interest is $56480. How much did he invest at each amount? Use the six-step He invested $ _ at 8% and $_ at 12%
*October 6, 2013*

**Alegbra**

A mother wants to invest $ 12,000.00 for her sons education. She invests a portion of the money in a bank certificate of deposit (CD Account) which earns 4% and the remain saving bond that earns 7%. If the total interest earned after a year is 720.00, How much invested in the ...
*October 6, 2013*

**Alegbra**

The blood alcohol concentration (BAC) of a person who has been drinking is given by the following expression. Number of ounce % alcohol x 0.075 divide body weight in pounds minus hour of drinking x 0.015 In 4 hours a 220lb person has drunk 5 12 ounce beer (60z) each have 5.5% ...
*October 6, 2013*

**Alegbra**

(vx0.5403-5450)divide by 1000x34.04 use the expression calculate the property tax paid with the home value of $170,000
*October 6, 2013*

**Math**

A yard measures a x b feet the swingset space is a x c feet how much lawn is left after swing set
*October 1, 2013*

**aLGEBRA 2 help please would appreciate **

X over X+3 subtract X over X-3 = X^2 + 9 over X^2 -9 solve for x. show all work thank you
*October 1, 2013*

**Statistics**

In an Intro Stats class, 57% of students eat breakfast in the morning and 80% of students floss their teeth. Forty-six percent of students eat breakfast and also floss their teeth. What is the probability that a student from this class flosses his/her teeth given they eat ...
*October 1, 2013*

**Chemistry- moles**

How do I determine the number of hydrogen atoms in .0885 mol Tetracarbon decahydrogen?
*October 1, 2013*

**aLGEBRA 2 help please would appreciate **

X over X+3 subtract X over X-3 = X^2 + 9 over X^2 -9 solve for x. show all work thank you
*October 1, 2013*

**ALGEBRA 2 help please would appreciate **

x x _____ - _____ = x^2+9 ________ x+3 x-3 X^2-9 solve for x. and check answer thank you show work please
*October 1, 2013*

**alGEBRA 2 help please would appreciate **

x over (x+3) -x over(x-3)=x^2+9 over X^2-9 solve for x and check answer
*October 1, 2013*

**aLGEBRA 2 help please would appreciate **

x/x+3 -x/x+3=x^2+9/x^2-9 solve for x and check your answers
*October 1, 2013*

**aLGEBRA 2 help please would appreciate **

x+x/4=25/6 find x please show all the step thank you
*October 1, 2013*

**math **

The cost of a telephone call is $0.75 + $0.25 times the number of minutes. Write an algebraic expression that models the cost of a telephone call that lasts t minutes. i got C= 0.75 + 0.25t am i correct? pls help if im not :( and show me how u got the answer thanks in advance
*October 1, 2013*

**Chemistry**

* at 790 torr not 70
*October 1, 2013*

**Chemistry **

Determine the molecular formula of phosphorus. phosphorus gas has a density of 0.617 g/L at 70 and 200 Celsius ...
*October 1, 2013*

**Statistics (Reiny)**

1. A consumer organization estimates that 30% of the households in a particular community have one television set, 39% have two sets, and 20% have three or more sets. What is the probability that a household chosen at random does not have two sets? A) 0.39 B) 0.80 C) 0.61 D) 0...
*September 30, 2013*

**Statistics **

1. A human gene carries a certain disease from a mother to her child with a probability rate of 0.58. That is, there is a 58% chance that the child becomes infected with the disease. Suppose a female carrier of the gene has five children. Assume that the infections, or lack ...
*September 29, 2013*

**Statistics**

Thank you!
*September 29, 2013*

**Statistics**

1. In a certain game, the probability of getting a red outcome is 0.03. Find the probability of getting an outcome that is not red? The answer must be in a decimal. I put 0.97 as the answer ( 1-0.03=0.97) 2. The instructor in a Humanities class says that students have a 15% ...
*September 29, 2013*

**ALGEBRA 2 help please would appreciate **

3x-8 over 3x subtract 8 over 7y please show all work help needed. I have no idea how to do it
*September 29, 2013*

**math**

convert from decimal to the indicated base. 56 to base 5. i know theres long division involved but i have no idea what to do after. i did 5\56 & got 11 then 5/11 & got 2 & then 5/2 to finally get a remainder of 0 what do i do now!?
*September 28, 2013*

**Psychology (Ms. Sue)**

Ms. Sue would you please check my answers? 1. To begin to regulate their emotions, children must first start to learn impulse control? True 2. Young children typically have low self esteem since they compare their abilities with their peers? False 3. Guilt is an emotion of ...
*September 27, 2013*

**Chemistry**

If 4.41 moles of C5H12 react with excess O2, how many moles of CO2 will be produced in the following combustion reaction? C5H12+8O2 --> 6H2O+5CO2
*September 25, 2013*

**Psychology**

Preschoolers do not use private speech to A) communicate with those around them B) decide what to do C) explain events to themselves D) review what they know Is the answer A?
*September 22, 2013*

**organic chem**

name all the isomers for c5h10br2
*September 22, 2013*

**english**

While shopping for garden gnome Myrtle noticed some new ceramic herb pot but she though they were considerably more expensive than the sturdy green plastic ones.
*September 19, 2013*

**marketing**

• What challenges do specialized magazines such as Mother Earth News face hen trying to entice advertisers? Create a pitch to a potential green-product advertiser stating the benefits of advertising in Mother Earth News.
*September 17, 2013*

**marketing**

Suppose you are the advertising manager for a new line of adult fragrances. Which form of media would you use for this new product? Please explain.
*September 17, 2013*

**math**

Workers who manufacture shirts are sometimes paid based on the number of shirts they produce. Compute Lyle's gross pay if she made 380 shirts. The rate per shirt is given by the differential piecework schedule below: Pay Level Pay Level Items Produced Rate per Item 1 1-187...
*September 17, 2013*

**math**

if thr mechanic says that it will take seven days to repair your car, then it will actually take ten days. The mechanic says, "I figure it'll take a week to fix it." Then you can expect it to be ready ten days from now. I don't understand how this would be ...
*September 16, 2013*

**Psychology**

1.Do axons and dendrites meet at synapses? True 2. Does perception take place in the corpus callosum? False 3. One of the drawbacks of breast feeding is that the quantity of breast milk produced is not adjustable. for example it may be difficult for a mother to keep up with ...
*September 6, 2013*

**algebra**

Select the x-coordinate of the vertex of the parabola defined by the function f(x)=-3x^2+7x+8
*September 6, 2013*

**chemistry**

Convert 34.5 in2 to cm2. Report the answer to the correct number of significant figures. (1 inch = 2.54 cm is an exact or defined conversion.)
*September 6, 2013*

**Organic Chemistry**

Is ethyl cyclohexane optically active?
*September 5, 2013*

**Organic Chemistry**

How many stereoisomers are possible for each of the following structures? Draw them, and name each by the R-S and E-Z conventions a) 4-methyl-2,5-heptadiene b) 1,2,5-trichloro-3-hexene
*September 5, 2013*

**Organic Chemistry**

How many stereoisomers are possible for each of the following structures? Draw them, and name each by the R-S and E-Z conventions
*September 5, 2013*

**Organic Chemistry**

Place these in order of decreasing priority according to the R-S convention a) H, CL, Br, CH3 B) OH, CH3, CH2CL, CH3CH2 C) CH3, CH2CH3, CL, c6H5
*September 5, 2013*

**Organic Chemistry**

Which of the following substances can exist in an optically active form a) 1,3 dibromopropane b) ethyl cyclohexane c) 3 ethylpentane
*September 5, 2013*

**Acc. Algebra 2**

Yeah I realized that!!! Thank you very much!!!
*September 3, 2013*

**Acc. Algebra 2**

Jan invested $1200 at a certain simple interest rate and $2200 at 3%higher. Her annual earnings were $253. Find the two interests rate if she earned $121 more on the larger investment than on the smaller.
*September 3, 2013*

**Acc. Algebra 2**

A jar contains 40 coins consisting of dimes and quarters and having a total value of $4.90. How many of each kind if coins are there?
*September 3, 2013*

**Acc. Algebra 2**

At 10:30 am two planes leave to Houston, one flying east 560km/h and the other flying west at 640 km/h. At what time will they both ne 2100km apart.
*September 3, 2013*

**College Geometry**

In this assignment, you examine a process that links polygons and circles. You will reach some quantitative conclusions about their respective areas and the relationship between the two. As you know, a regular polygon has sides of equal length and angles that are the same. ...
*September 3, 2013*

**health**

What should you do if you are still awake after staying in bed for more than 20 minutes? A. Get stressed out B. Have one serving of alcohol C. Count sheep in bed D. Get up and do something relaxing until you feel sleepy is it d?
*September 3, 2013*

**Statistics**

A study in England attempted to determine the "right" method for teaching mathematics. A random sample of 248 students was chosen from the school at large. The students were randomly assigned to one of two classes. At the beginning of the research, the students had ...
*August 28, 2013*

**Geometry / Proofs**

Given: Triangle ABC with AD bisecting angle BAC, and AE is congruent to ED (both line segments). Prove: AE/AC = BD/BC. Statements Reasons
*August 27, 2013*

**Statistics**

I am respectfully requesting help with the following assignment. I am struggling in this chapter of statistics... Define the term sample? A) A sample is a numeric characteristic of a sample B) A sample is a numeric characteristic of a population C) A sample is the entire ...
*August 26, 2013*

**Psychology**

Wow! That was fast! Thank you again! Also, one more question... Social constructions often vary by: A. cohort B. physical health status C. intelligence D. Family I'm stuck between family and cohort, but leaning towards cohort...
*August 24, 2013*

**Psychology**

Thank you, Ma'am! Are you able to check these for me? 1. Many assumptions about how things should be such as that the husband should be the major wage earner in a married relatinship are: A. social constructions (i chose this one) B. universally accepted C. objective ...
*August 24, 2013*

**Psychology**

1.Which of the following is an example of something that remains stable across the lifespan? A. Gender (I chose this) B. Physical size C. Language D. all over above 2. Which of the following is true of the life-span perspective? A. It is primarily concerned with ...
*August 24, 2013*

**psy**

Understanding accepted standards of behavior when you enter a new classroom demonstrates the process of
*August 21, 2013*

**Business **

Hello, I hope someone can help me with the question below, since I am completely stuck. One day, a bank receives $5000 deposit on which they are going to pay 2% per year. Same day, a student wants to take out a loan of $5000. The bank tells them that it costs $100 to process ...
*August 15, 2013*

**Math**

Use the formula for slope of a line tangent to a parametric curve to find dy/dx for the curve c(s) = (s^-1-6s, -7s^3) at the point with s=-4
*August 4, 2013*

**Math**

Express x=e^(-2t), y=4e^(3t) in the form y = f(x) by eliminating the parameter.
*August 4, 2013*

**Organic Chem**

adding one equivalent of sulfuric acid to 2,4-hexadiene gives 2 possible products. Give the structure and write all steps in the reaction mechanism that explains how each product is formed
*August 4, 2013*

**POL 201**

The federal system can be thought of as a marble cake because
*August 2, 2013*

**American history**

The overlap of state and national functions resembles the interweaving of flavors in the cake.
*August 2, 2013*

**American history**

The overlap of state and national functions resembles the interweaving of flavors in the cake. state and national functions are very distinct. it is clear where state authority ends and national authority begins. federalism is really a mushy system.
*August 2, 2013*

**American history**

The federal system can be thought of as a marble cake because
*August 2, 2013*

**American Government**

Lock's use of the term "property"
*July 29, 2013*

**Calculus-Series**

Sigma with n=1 to n= positive infinity (x^3)* (e^(-x^4)) Does it converge or diverge and use the integral test to show how. I got that it diverges, but this isn't correct. Can someone please explain? Thanks.
*July 29, 2013*

**Trig**

Find all solutions in the interval 0 degrees<θ<360 degrees. If rounding necessary, round to the nearest tenth of a degree. 17sec2 θ − 15tanθsecθ − 15 = 0
*July 22, 2013*

**socialology**

According to Lips (2008), Plato “described women and men as having the same nature and worth and deserving the same education and legal treatment” (p. 57). These ideas of having the same nature have changed over the centuries. Most theories regarding gender have ...
*July 16, 2013*

**physic PLEASE I REALLY NEED HELP WITH THIS PROBLEM**

The formula y=square root 64h can be used to find the velocity v in feet per second of an object that has fallen h feet. Find the velocity of an object that has fallen 25 feet. Round your answer to the nearest tenth.
*July 12, 2013*

**algebra1 HELP PLEASE Thanks you!!**

The formula y=square root 64h can be used to find the velocity v in feet per second of an object that has fallen h feet. Find the velocity of an object that has fallen 25 feet. Round your answer to the nearest tenth.
*July 12, 2013*

**algebra1 HELP PLEASE Thanks you!!**

The function f(x)=5 square root of x gives the speed in feet per second (ft/s) of a free-falling object after it has fallen x feet (ignoring air resistance). FInd the speed of the object after it has fallen 25 feet. If necessary, round your answer to the nearest tenth.
*July 12, 2013*

**algebra1 HELP PLEASE Thanks you!!**

The function gives the speed in feet per second (ft/s) of a free-falling object after it has fallen x feet (ignoring air resistance). FInd the speed of the object after it has fallen 25 feet. If necessary, round your answer to the nearest tenth.
*July 12, 2013*

**Medical Transcription**

I need to find someone who knows how to do Electronic Medical Records so I can proceed with my lessons. Thank you.
*July 11, 2013*

**algebra1 HELP PLEASE Thanks you!!**

Write a polynomial function in standard form with zeros at 6, -4, and 1
*July 10, 2013*

**algebra1 HELP PLEASE Thanks you!!**

Find the relative minimum of y = 3x^3 + 14x^2 - 10x - 43 Round your answers to the nearest hundredth.
*July 10, 2013*

**algebra1 HELP PLEASE Thanks you!!**

wo identical rubber balls are dropped from different heights. Ball 1 is dropped from a height of 100 feet, and ball 2 is dropped from a height of 210 feet. Write a function for the height of each ball. h1(t) = h2(t) = When does ball 1 reach the ground? Round to the nearest ...
*July 8, 2013*

**physic PLEASE I REALLY NEED HELP WITH THIS PROBLEM**

Two identical rubber balls are dropped from different heights. Ball 1 is dropped from a height of 100 feet, and ball 2 is dropped from a height of 210 feet. Write a function for the height of each ball. h1(t) = h2(t) = When does ball 1 reach the ground? Round to the nearest ...
*July 8, 2013*

**algeba 1 please I REALY NEED HELP THANK YOU :D**

Two identical rubber balls are dropped from different heights. Ball 1 is dropped from a height of 100 feet, and ball 2 is dropped from a height of 210 feet. Write a function for the height of each ball. h1(t) = h2(t) = When does ball 1 reach the ground? Round to the nearest ...
*July 8, 2013*

**algebra1 HELP PLEASE**

The length of a rectangle is 4 m less than the diagonal and the width is 7 m less than the diagonal. If the area is 76 m2, how long is the diagonal? Round your answer to the nearest tenth.
*July 8, 2013*

**algebra1 HELP PLEASE**

The height in feet of a rocket after t seconds is given by h(t) = 160t - 16t2. Find the maximum height the rocket attains: After how many seconds does it reach this height?
*July 8, 2013*

**math**

The height in feet of a rocket after t seconds is given by h(t) = 160t - 16t2. Find the maximum height the rocket attains: After how many seconds does it reach this height?
*July 8, 2013*

**algebra1 HELP PLEASE**

y = x2 - 7 what are the x intercepts
*July 8, 2013*

**algebra1 HELP PLEASE**

Two identical rubber balls are dropped from different heights. Ball 1 is dropped from a height of 100 feet, and ball 2 is dropped from a height of 210 feet. Write a function for the height of each ball. h1(t) = h2(t) = When does ball 1 reach the ground? Round to the nearest ...
*July 8, 2013*

**algebra 1 please help**

Solve the inequality. Round your answer to the nearest tenth. x2 + 5⋅x - 7 > 5
*July 6, 2013*

**algebra1please look over THANK YOU**

The point (2, 15) is in the shaded region of which of the following inequalities? A) y<-x^2-4x+1 B) y>-2x^2-4x ---(slash under the >) C) Y<2x^2+3x+1 D) Y>2x^2+3x+1 i got B. :)
*July 6, 2013*

**algebra1 HELP PLEASE**

Simplify the expression: (2 + 6⋅i)(-1 + 6⋅i)
*July 6, 2013*

**algebra1 HELP PLEASE**

Solve the inequality. Round your answer to the nearest tenth. x2 + 5⋅x - 7 > 5
*July 6, 2013*

**algebra1please look over THANK YOU**

Simplify the expression. (-4*i)(-4*i) I got 16 is that right
*July 6, 2013*

**algebra1please look over THANK YOU**

Write the number in the form a + bi: square root -9 + 16 i got 16 +3i is that right
*July 6, 2013*

**algebra1 HELP PLEASE**

find the value of x and y that make each equation true -4+(y)^i=-12x-i+8 please show the steps thanks
*July 5, 2013*

**Algebra1 HELP PLEASE**

Solve 7⋅x = x2 - 6 by using the Quadratic Formula. Round to the nearest tenth.
*July 5, 2013*

**algebra1 Help pleASE**

A gardener wants to create a rectangular vegetable garden in a backyard. She wants to have a total area of 13 square feet, and it should be 12 feet longer than it is wide. What dimensions should she use for the vegetable garden? width = feet length = feet
*July 4, 2013*

**algebra1please look over THANK YOU**

The solutions to a quadratic equation are -1 and 7. What is the equation of its axis of symmetry? I GOT 3 is that right
*July 3, 2013*

**algebra1please look over THANK YOU**

Mary is making a pinata that has a ball-like shape. The pinata has a surface area of 50 square feet. Use the formula for the surface area of a sphere: s=4(pi)^2 to find the radius of the pinata. Round your answer to the nearest hundredth. _____ feet i got 50=39.4 but dont know...
*July 3, 2013*

**algebra1 HELP PLEASE**

Mary is making a pinata that has a ball-like shape. The pinata has a surface area of 50 square feet. Use the formula for the surface area of a sphere: s=4(pi)^2 to find the radius of the pinata. Round your answer to the nearest hundredth. _____ feet
*July 3, 2013*

**Algebra1 HELP PLEASE**

please look over is it suppose to be 3 if i do -1+7 =6 then divied it by 2 i get 3
*July 3, 2013*

**Algebra1 HELP PLEASE**

The solutions to a quadratic equation are -1 and 7. What is the equation of its axis of symmetry?
*July 3, 2013*

**Algebra1 HELP PLEASE**

(x + 4)(x - 3) = -10?
*July 3, 2013*

**algebra1 HELP PLEASE**

Mary is making a pinata that has a ball-like shape. The pinata has a surface area of 50 square feet. Use the formula for the surface area of a sphere: to find the radius of the pinata. Round your answer to the nearest hundredth. _____ feet
*July 3, 2013*