Sunday
February 14, 2016

Posts by betty

Total # Posts: 345

Math
1. f(x)=x^2(e^x) find a point where the tangent is horizontal. The answer is apparently (-2, 4/e^2). But I got 0 when I solved for the derivative. I don't get this. 2. What value of x does the function f(x)=(x^3+27)^(1/2) have vertical tangents? My approach was to find ...
February 11, 2016

math help please
if the pre image of a figure is located at (4,2) (-3,-3)(0,8) and it is reflected in the y-axis followed by a translation of 3 units left and 6 units down where is the new image locate give vertex coordinates
February 10, 2016

math
if the pre image of a figure is located at (4,2) (-3,-3)(0,8) and it is reflected in the y-axis followed by a translation of 3 units left and 6 units down where is the new image locate give vertex coordinates
February 10, 2016

math
write a single translation in algebraic notation for the following (x,y) (x-6,y+2) followed by (x,y) (x+3,y+1)
February 10, 2016

math
describe a single translation that would result from moving a figure,2 units left and 1 unit down then 5 units right and six units up
February 10, 2016

math
describe the single transformation that would be equivalent to a reflection over the y-axis followed by a reflection over the x-axis
February 10, 2016

Math
Find quadratic regressive equation for the following f' points; (x, f'(x)): (-4,74); (-3,39); -2,10; -1,-6; 0,-14; 1,-12; 2,0; 3,22; 4,55 It's something really complicated, and I'm later asked to find the original equation, which is a cubic function. Any idea ...
February 9, 2016

Math
1. 1. A police cruiser approaching a right-angled intersection from the north, is chasing a speeding car that has turned the corner and is now moving due east. When the cruiser is 0:6 miles north of the intersection and the car is 0:8 miles to the east, the police determine ...
February 7, 2016

Math
Use Newtons Method to find 13^(1/4) correct to four decimal places. I know the formula X_(n+1)= X_n - [f(X_n)]/[f'(X_n)]. I am not sure how to go on from there. I made the equation into y=X^(1/4), but I can't seem to figure out how to go on. Please help? Thanks in ...
February 5, 2016

science
which of the following is the function of live
December 11, 2015

chem
solution of 0.148 M sodium iodide for an experiment in lab, using a 500 mL volumetric flask. How much solid sodium iodide should you add
November 16, 2015

Physics
A 100g piece of ice at 0 degrees celcius is placed into a container holding 200g of water, initially at temperature 25 degrees celcius. Heat flows from the water to the ice, cooling the water and melting the ice. Calculate a) how many moles of ice and how many moles of water ...
November 4, 2015

Math
Solve the equation 2/3 O= n-3m
October 24, 2015

Algebra
paint express charge $30 per gallon of paint plus $1.10 per square foot of wall space. color creations charges $24 per gallon of paint plus $1.20 per square foot of wall space. robert estimates he will need four gallons of paint for the rooms he'd like painted. how much ...
October 23, 2015

Science
I am writing a mock biotechnology research proposal for class and I don't know what I should make this research plan about. What are some of the most breaking scientific news, or diseases and issues in this field(biology preferred, or chemistry) that are currently having ...
September 30, 2015

Math
A function has zeros of 5 and -1. If a horizontal translation is implemented, what is the least amount of transformation for both of the zeros to be positive integers? Is zero a positive integer?
September 24, 2015

math homework
Michael went into a comic book store to pick up a few of his “much wanted” comics. There are 4 different Batman issues, 5 different Star Wars issues, and 2 different Superman issues to choose from. How many combinations are possible for Michael to pick up one issue ...
April 30, 2015

math homework
Michael went into a comic book store to pick up a few of his “much wanted” comics. There are about 4 different Batman issues, about 5 different Star Wars issues, and about 2 different Superman issues to choose from. Exactly how many combinations are possible for ...
April 30, 2015

math
Would the solution be just 40?
April 30, 2015

math
59280?
April 30, 2015

Math
What is the ninth term of the following geometric sequence? a4=27 a7=64 a9=
April 21, 2015

Physics
At a given instant three electrons, in vacuum, happen to lie on a straight line. The first and second are separated by 3.00x 10-6 m, while the second and third are 8.00 10-6 m apart. What is the magnitude of the net electrostatic force on the middle electron, the second one?
April 20, 2015

math
Standard soft drink cans hold 12 ounce or 355 milliliters of soda. Assume that soda can must be right circular cylinders. Through trial and error with cans of different sizes, find the dimensions of a 12-ounce can that has the lowest cost for materials.
April 19, 2015

Physics
An unstable nucleus with a mass of 18.0 ✕ 10-27 kg initially at rest disintegrates into three particles. One of the particles, of mass 4.1 ✕ 10-27 kg, moves along the positive y-axis with a speed of 8.0 ✕ 106 m/s. Another particle, of mass 7.7 ✕ 10-...
March 1, 2015

Physics
A 4.1 g dart is fired into a block of wood with a mass of 20.2 g. The wood block is initially at rest on a 1.2 m tall post. After the collision, the wood block and dart land 2.6 m from the base of the post. Find the initial speed of the dart.
February 28, 2015

saftet
I have 5 words theres 25 letters. About saftey. Etadprlbaselsspsfnniltria
February 11, 2015

math
if a car passes mile marker 2 in 4 hours and a mile marker 125 in 6 hours, how many miles per hour is the car traveling?
February 2, 2015

trigonometry
a surveyor 1standing on a highway observed the angle of elevation of the airplain as 22.5°. at the same time, a surveyor 2 observed the angle of elevation of the same airplane to be 30°. if the airplane was 850m directly above a point on the highway, find the distance ...
January 12, 2015

math
If a plant grew 1 1/4 inches in one month. If the plant grows at the same rate, how many inches will it have grown at the end of 3 1/2 months?
December 27, 2014

finance
the joseph company has a stock issue that pays a fixed dividend of 3.00 per share annually. Investors believe the normal rik-free rate is 4 percent and that this stock is 14 percent,and that this stock should have a risk premium of 6 percent
November 14, 2014

math
4.5 by 6.12 original drawing want to increase size to 18 by 24. How do I do it?
October 21, 2014

7th grade LA
I don't understand why sentence #7 is correct. Shouldn't it be a compound -complex. " Although it was cold and the rain was getting heavier, we decided to go fishing as planned. Dependent: Although it was cold. Independent: the rain was getting heavier indepdent: ...
October 15, 2014

English
measurable
September 24, 2014

Math
Solve the equation: 4/3y+5/2y = 1
August 23, 2014

algebra
Simplify and show steps: 5x^2/x^3-x^2
August 23, 2014

Math
How do I simplify -4(-5x-u)-2(3u-2x)
July 13, 2014

Math
what is -4 (-w+4x-2)?
July 13, 2014

Math
what is 5 - / 8 6
July 13, 2014

Kirr
$1200.00
June 1, 2014

statistics
in a positive skewed distrubtion with a mean (average) of 100 and median of 90 is What?
May 29, 2014

Stats
Need help finding the area under the normal curve between z = -1.0 and z = -2.0?
April 16, 2014

chemistry
I don't know I copied the question word for word. He wants to know what was produced and percentage changes. I'm sorry
April 15, 2014

chemistry
There are two different oxides of copper produced as a result of this reaction. They are copper(I) and copper(II) oxide. If copper is changed to copper(I) oxide the percentage changed in mass is 12%. If copper is changed to copper(II) oxide the percentage change in mass is 25...
April 15, 2014

math
3/8 of a box contains 18 crackers how many crackers are in a box
April 10, 2014

Statistics
If a company’s total fixed costs increased by $20,000 and its contribution margin decreased by $12,000, net income would be?
April 10, 2014

Science
a d a a
March 3, 2014

math
3x+2x+y+2y
February 17, 2014

physics
A 45.4 kg sign is hanging in two wires as illustrated below. If angle A is 53.5 degrees and angle B is 29.6 degrees, what is the tension in the left wire? Give your answer in newtons
February 16, 2014

Math
is zero
January 29, 2014

math
A die is tossed twice. What is the probability of obtaining 6 dots both times?
January 18, 2014

statistics
A lottery uses 4 urns containing chips 0 to 9. One chip is selected at random from each urn. How many sample points are in the sample space?
January 18, 2014

algebra 2
if a system of equations has no solution then it is what?
December 19, 2013

fin
As part of a new labor contract, Acme has agreed to make a one-time contribution of Euros 1,000,000 to the construction of a new physical fitness facility for its employees. This amount will be placed in an account earning E% (E = the fifth digit of SUN). When the account ...
December 12, 2013

business
Access: When importing and linking data, what program is used to store data and what program is used to analyze it?
December 4, 2013

geometry
A flagpole has a height of 10 yards. It will be supported by three cables, each of which is attached to the flagpole at a point 4 yards below the top and attached to the ground at a point that is 8 yards from the base of the pole. Find the total number of feet of cable that ...
November 26, 2013

math
How do I factor non-traditional math problems that contain symbols? The examples given were: $q + $8 - $~ and 7* - x* + 2*.
November 8, 2013

anatomy
the lungs are lateral to the heart?
September 23, 2013

algebra
A parallelogram is 22 inches long and 14 inches wide. How do you find the height of the parallelogram? How do you find the area of the parallelogram ?
September 21, 2013

Algebra, HELP!
SOLVE FOR p: 5T = 6D + 6pm
September 3, 2013

Algebra
Got it! Y= x(x-2)
August 21, 2013

Algebra
What is the rule for the function x= 4, 5, 6, 7, 8 y= 8, 15, 24, 35, 48
August 21, 2013

Math
Sam is making 3 picture frames with dimensions seven and seven-eights and five and three quarters. What length of wood does he need for all 3 picture frames? Please answer as soon as possible; need it for tomorrow. Thanks
May 22, 2013

life orientation
recommendations on how to address pollution
April 26, 2013

Algebra
X^2(y-7)-14x(y-7)+45(y-7)
April 3, 2013

Statistics and Probability
Why is a normal distribution called "normal"?
March 19, 2013

Statistics and Probability
Why is a normal distribution called "normal"?
March 19, 2013

english
c
March 13, 2013

biology
−C−H−− −N−−−H −O−H−−
March 12, 2013

Math Word Problem
Tristen mixes nuts that cost $2.00 per pond with nuts that cost $4.00 per pound. He buys triple as much of the $2.00 per pound nut than he buys of the $4.00 per pound nut. If he spent a total of $32.00, how many pounds of the $2.00 per pound nut did he buy?
February 11, 2013

MATH
A camping store put in an order for flashlights and sleeping bags. The number of flashlights ordered was 3 times the number of sleeping bags. The flashlights cost $12.00 each, and the sleeping bags cost $45.00 each. If the total cost for the flashlights and the sleeping bags ...
February 11, 2013

Statistics- HELP!
2. The Rathburn Manufacturing Company makes electric wiring, which it sells to contractors in the construction industry. Approximately 900 electric contractors purchase wire from Rathburn annually. Rathburn's director of marketing wants to determine electric contractors&#...
February 11, 2013

mATH
First graders who misbehave in school may be more likely to be regular smokers as young adults according to a new study presented in the July 2004 issue of the American Journal of Epidemiology. After following a group of U.S. first graders for 15 years, it was found that among...
February 11, 2013

Probability Help!!!
5 selected from batch of 50 produced, if one is found defective, than each is tested individually. Find the probability that the entire batch will need testing if the batch contains: 8 defective phones 2 defective phones
February 10, 2013

Math-Statistics
An advisor offers 8 mutual funds in the high risk category, 7 moderate, 10 in low risk. The investor decides to invest in 3 high risk, 4 moderate risk, and 10 low risk. How many ways can he do this?
February 10, 2013

Math Probability
5 selected from batch of 50 produced, if one is found defective, than each is tested individually. Find the probability that the entire batch will need testing if the batch contains: 8 defective phones 2 defective phones
February 10, 2013

Statistics
An advisor offers 8 mutual funds in the high risk category, 7 moderate, 10 in low risk. The investor decides to invest in 3 high risk, 4 moderate risk, and 10 low risk. How many ways can he do this?
February 9, 2013

Statistics
5 selected from batch of 50 produced, if one is found defective, than each is tested individually. Find the probability that the entire batch will need testing if the batch contains: 8 defective phones 2 defective phones
February 9, 2013

Probability
5 selected from batch of 50 produced, if one is found defective, than each is tested individually. Find the probability that the entire batch will need testing if the batch contains: 8 defective phones 2 defective phones
February 9, 2013

Probability
An advisor offers 8 mutual funds in the high risk category, 7 moderate, 10 in low risk. The investor decides to invest in 3 high risk, 4 moderate risk, and 10 low risk. How many ways can he do this?
February 9, 2013

Probability
An Adviser has 9 products he wants to tell a client about, but only has time to tell him about 4. How many different ways can he give the details on 4 different products to the customer?
February 9, 2013

Probability
A woman at the mall sees flats, 2’heels, and 3’ heels. The shoes come in two shades of beige(light and dark) and black. What is the probability that she will pick the following combinations? shoe has a heel and black- no heal and beige shoe has a heel and is beige
February 8, 2013

Venn Diagrams
P(Z)= .40, P(Y)=.30, P(Z ⋃Y)=.58 Find the following: P(Z’ ⋂Z’) P(Z’⋃ Y’) P(Z’⋃ Y) P(Z⋂ Y’)
February 8, 2013

Statistics
An Adviser has 9 products he wants to tell a client about, but only has time to tell him about 4. How many different ways can he give the details on 4 different products to the customer?
February 8, 2013

Math
An advisor offers 8 mutual funds in the high risk category, 7 moderate, 10 in low risk. The investor decides to invest in 3 high risk, 4 moderate risk, and 10 low risk. How many ways can he do this?
February 8, 2013

Trigonometry
What is the period and asymptote in y= tan(2x-pi)
February 3, 2013

trigonometry
what is the graph of y= arccos(x-2)
February 2, 2013

trigonometry
what is the graph of y=sec(x+pi/2)
February 2, 2013

trigonometry
what is the graph of y= tan(2x-pi)
February 2, 2013

trigonometry
what is the graph of y= cos2(x-pi)+2
February 2, 2013

trigonometry
What is the graph of y= 5sin1/2(x+pi)-1
February 1, 2013

sociology cultural
What is a particular passion or talent that you possess which was never truly appreciated by teachers in your education?
February 1, 2013

Physics
A +2 uC and a +10 uC are 3cm apart a) Find the electrostatic force between the charges b) If the charges are brought together and touched, what would be the charge on each one? c) These spheres are then moved 3 cm apart. What would be the force between them?
January 26, 2013

Earlychilodhood education
a) Say that again slowly.
January 20, 2013

Science
Carbon
December 2, 2012

algebra 1
Transitive
November 27, 2012

math
please graph 4x^2/(x^3-1) and show asymptotes
November 13, 2012

physics
A flexible metal sheet of length 6.0cm, breadth 5.00cm and the average thickness of 0.883cm has a mass of 23.00g. calculate the density of the metal
October 18, 2012

Math
zoe is 110 cm tall Claire is 10 cm taller how tall is claire
October 17, 2012

Statistic
The amount of time it takes to take your order at the local Whaters restaurant has a population mean m of 3.1 minutes and a standard deviation s of 0.40 minutes. If you select a random sample of 16 customers: Q-3a: What is the probability that the mean time spent per customer ...
August 12, 2012

Math
How much tolnaftate powder is in 7% Eucerin cream 85g? _______________
July 30, 2012

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