Saturday
December 10, 2016

# Posts by tay

Total # Posts: 106

Math
Use Stokes' Theorem to evaluate S curl F · dS. F(x, y, z) = 2y cos z i + ex sin z j + xey k, S is the hemisphere x2 + y2 + z2 = 49, z ? 0, oriented upward.
November 22, 2016

physical science
Step by step how would i solve this. A baseball is thrown at a distance of 20 meters from the outfield to the third base. What is the baseball's velocity if it takes 2.3 seconds to get to the third one.
October 12, 2016

physical science
A baseball is thrown a distance of 20 meters from the outfield to 3rd base. What is the baseball's velocity if it takes2.3 seconds to get to the third basemen? How would I solve this?
October 11, 2016

accounting
At the end of the current year, \$19,900 of fees have been earned but not billed to clients. a.What is the adjustment to record the accrued fees? Indicate each account affected, whether the account is increased or decreased, and the amount of the increase or decrease. b.If the ...
August 2, 2016

Math
Solve the following system of equations: −2x + y = 1 −4x + y = −1 (3, 1) (−1, 3) (−1, −3) (1, 3) ***
July 7, 2016

science
okay, thanks for your help! (:
April 13, 2016

science
Are you sure it's not one of those? Creating a family plan would have to be before, not after. And to invite friends to see the damage would not make sense either because there's a chance they cant leave their house.
April 13, 2016

science
Would it be stay away from windows?
April 13, 2016

science
Which of the following is something you should do after severe weather occurs? - clean up flood waters *** - stay away from windows - create a family safety plan - invite friends to see the damage
April 13, 2016

Math
Leila's bookshelf has 4 shelves. Each shelf has 9 books. Write a multiplication sentence to tell about the books. Explain what each number in the multiplication sentence means.
December 2, 2015

Chemistry
If I have 4.53*10^-15 moles of tantalum atoms, how many tantalum atoms do I have?
November 12, 2015

Math
Juan's company spent \$2350 on an event. They spent about \$1500 on food and about \$900 on entertainment. What could the actual cost of the food and entertainment be?
November 5, 2015

Pre-Calculus
Write the standard form of the equation of the line that passes through the point (-4, -2) and is perpendicular to the graph of 3x - 2y + 9 = 0.
November 5, 2015

Statistics
the heights of young women are approximately Normal with 65 inches and standard deviation 2.5 inches. The heights of men in the same age group have mean 70 inches standard deviation 2 inches. What percentage of women are taller than a man of average (mean) height?
October 21, 2015

Math
How do I simplify this expression : -12 / 3 * (-8 + (-4)^2 - 6 ) + 2 the answer is -6.
October 5, 2015

I think it is b
September 18, 2015

which of the following factors most contributed to the flourishing of great civilization in Africa between 400-1600 a) the spread of Christianity to sub- Saharan nations b)extensive trade with north Africa, Arabic, and Portuguese trading partners c) the growth of wheat and ...
September 18, 2015

Math Pre Algebra
evaluate 5(14-2^3)+ 8/2 =
September 12, 2015

Algebra
A whole number is added to a number with two didgets after the decimal point. To make sure the answer is reasonable, how many didgets should the sum have after the decimal point ? A - none B - 1 C- 2 D- infinitely many
September 11, 2015

math
IT took me a while to learn how to flip flapjacks. In fact, a+1/a=6, then the value of a^2 + 1/a^2 is the number of attempts it took me. How many attempts did it take me? A. 34 B. 35 C. 36 D. 38 I don't know how to do it, I'm assuming that 1 1/a =6, but I'm wrong I...
August 6, 2015

math
IT took me a while to learn how to flip flapjacks. In fact, a+1/a=6, then the value of a^2 + 1/a^2 is the number of attempts it took me. How many attempts did it take me? A. 34 B. 35 C. 36 D. 38 I don't know how to do it, I'm assuming that 1 1/a =6, but I'm wrong I...
August 6, 2015

Math
A bank offers two interest account plans. Plan A gives you 6% interest compound annually. Plan B gives you 13% annual simple interest. You plan to invest \$2,000 for the next 4 years. Which account earns you the most interest (in dollars) after 4 years? How much will you have ...
June 10, 2015

Probability
There are 9 marbles if 3 different colors where 2 marbles are selected at random without replacement and the probability is 1/6
May 5, 2015

math
The distance to the nearest 100,000 km from the earth to the moon is given as 400,000 km. The average speed to the Nearest 500km/h is 3500km/h. Calculate the least and greatest time it takes the rocket to reach the moon I figured out the formula speed = distance / time but ...
March 31, 2015

PHYSICS (VECTOR)
A plane is flying due South (270º) at 474.8 km/h. A wind blows from West to East (0°) at 46 km/h. Find the direction of the plane's travel. Report your answer in degrees from 0° as a reference.
October 26, 2014

trig
what is the angle of elevation of a 15 foot ladder leaning 12 feet up a building?
October 3, 2014

MATH
Explain why the digits in a place value system with base, b, are 0,1,... b-1 and why no digits for numbers greater than b-1 are needed
September 12, 2014

physics
A child is pushing a shopping cart at a speed of 0.7 m/s. How long will it take the child to push the cart down an aisle with a length of 17.3 m? (Answer in seconds)
August 27, 2014

Multiple Choice
All correct... Except #5. It's 10kw. 6. Battery & copper wire.
May 8, 2014

-towards negative charge -point inward -??
April 21, 2014

math
what is tan(A-B) if SinA=1/2, cosA>0, tanB=3/4 and sinB<0
April 13, 2014

physics
A solid block of mass m2 = 1.0 \$kg\$, at rest on a horizontal frictionless surface, is connected to a relaxed spring (with spring constant k = 260 N/m whose other end is fixed. Another solid block of mass m1 = 2.4 kg and speed v1 = 3.3 m/s collides with the 1.00 kg block. If ...
March 21, 2014

algebra
the answers 60 just took it
February 22, 2014

humanties
200 years after slavery
November 5, 2013

math
Find the sum of the squares of the deviations from the mean of a series of ACT scores: 24,17,27,25,22
October 20, 2013

english
In " At the Tourist Center in Boston," the speakers tone can best be identified as?
September 6, 2013

english
In " At the Tourist Center in Boston," the speakers tone can best be identified as?
September 6, 2013

Chemistry
A solution of an unknown base has a concentration of 0.250M, and a pH of 12.72. Calculate Kb for this base.
September 5, 2013

math
Video games are on sale for 25% off. If a particular game regularly sells for \$59.50, what is the sale price?
June 10, 2013

life orientation
Ways in which one can take responsibility to provide safe and healthy living environment?
April 30, 2013

science
HOw would you attempt to isolate and identify a bacterial infection acquired on another planet
April 29, 2013

Trig
Sin^2 b(1 +cot^2 b) =1
April 3, 2013

Calculus
For the following demand equation compute the elasticity of demand and determine whether the demand is elastic, unitary, or inelastic at the indicated price. (Round your answer to three decimal places.) x + (1/9)p - 27 =0 ; p=23
March 11, 2013

Math
For the following demand equation compute the elasticity of demand and determine whether the demand is elastic, unitary, or inelastic at the indicated price. (Round your answer to three decimal places.) x + (1/9)p - 27 =0 ; p=23
March 10, 2013

health
February 13, 2013

statistics
Question 11 Assume that a procedure yields a binomial distribution with a trial repeated n times. Use the binomial probability formula to find the probability of x successes given the probability p of success on a single trial. Round to three decimal places. n = 5, x = 2, p = ...
December 6, 2012

Chemistry
X= 5.9089
September 8, 2012

physics
The drawing shows a person looking at a building on top of which an antenna is mounted. The horizontal distance between the person's eyes and the building is d = 83.0 m. In part a the person is looking at the base of the antenna, and his line of sight makes an angle of &#...
August 23, 2012

algebra 2
You and your friend are both knitting scarves for charity. You knit 8 rows each minute and already have knitted 10 rows.Your friend knits 5 rows each minute and has already knitted 19 rows. When will you both have knitted the same number of rows?
May 18, 2012

math
hey thanks we are checking it now:)
January 17, 2012

math
a particle moves along the curve y= sqrt 1+x cubed. As it reaches the point (2,3) the y-corrdinate is increasing at a rate of 4cm/s. How fast is the x-coordinate of the point changing at that instant?
January 17, 2012

chemistry
Pressure cooker is 1.3atm what is the temperature of water that boils
October 25, 2011

AP US History
I am writing an APUSH DBQ and I have what I think is a pretty winning thesis but I am having problems coming up with a good, interesting opening sentence. I figure once I have the first paragraph figured out the rest will flow rather easily. I also need to figure out a ...
October 22, 2011

physics
A vector representing 140 N is oriented at 42◦ with the horizontal. What is the magnitude of its horizontal component?
October 10, 2011

college chem
How many moles of O are needed to combine with 0.223 mole of C to form the following compounds? CO CO2
September 15, 2011

chemistry
How many moles of O are needed to combine with 0.223 mole of C to form the following compounds? CO CO2
September 15, 2011

Chemistry
if 130 g of KNO3 are added to 100 g of water at 40 degrees Celsius.How many grams do not dissolve?
April 13, 2011

chemistry
Glycerin, C3H8O3, is a nonvolatile liquid. What is the vapor pressure of a solution made by adding 164 g of glycerin to 325 mL of H2O at 39.8°C? The vapor pressure of pure water at 39.8°C is 54.74 torr and its density is 0.992 g/cm3.
February 12, 2011

Chemistry
2.311023x
November 16, 2010

physics
if i throw a 2kg glob of clay and hit a wall at 3 m/s, how much momentum do i impact to the clay/wall? why?
November 7, 2010

science
Which cavity consists of the cranial cavity and vertebral canal? the dorsal or the ventral?
August 27, 2010

Number Theory
BTW 1 and 10 = 1 BTW 1 and 100 =10 BTW 1 and 1000= 100 BTW 1 and 10000 = 1000 Am I following this correctly
May 2, 2010

Number Theory
Can someone help me with this question How many integers from 1 to 10000 inclusive, are multiples of 2 and 5?
May 2, 2010

Number Theory
How Do you expand (4x+3y+3z)^6?
May 2, 2010

matt/116
two angles are complementary. The sum of the measure of the first and the one-fourth of the second angle is 62.25 degrees find the measures of the angle.
April 11, 2010

chemistry
Which would produce greater number of moles of product: a certain amount of hydrogen gas reacting with oxygen gas to make water, or the same amount of hydrogen gas reacting with nitrogen gas to make ammonia? Why?
April 11, 2010

Physics
The displacement of a standing wave on a string is given by D=3.6sin(.54x)cos(37t), where x and D are in centimeters and t is in seconds. What is the distance in cm between the nodes in centimeters? Give the amplitude of each of the component waves, meaning that there two, in ...
November 17, 2009

math
Helppp me! Need this in about 10 min. earlier the better!!!! pleaseee:) anyways... neg. 9/10 plus neg. 1/6 =?
November 5, 2009

Math
What is neg. 9/10 + neg. 1/6? Pleaseee help im stuck:/
November 5, 2009

physics
so the answer to a should be -14.9 m/s and c should be -.08?
October 26, 2009

physics
okay i got the answer to b. now is a v(2)= vo+(9.8)(2) or v(2)= vo -(9.8)(2)?
October 26, 2009

physics
i still cant do it
October 26, 2009

physics
A helicopter is rising at 4.7 m/s when a bag is dropped from it. (Assume that the positive direction is upward.) (a) After 2.0 s, what is the bag's velocity? (b) How far has the bag fallen? (c) How far below the helicopter is the bag?
October 26, 2009

science
A rectangular brick measures 6cm by 9cm by 20cm and has a mass of 2.563 kilograms. Calculate the bricks volume in cubic centimeters, and cubic milimeters
September 16, 2009

math
4-(-h)=68
September 2, 2009

English
Here is my thesis can you please help: Even thought childhood obesity is not only the parents' fault but the child's as well, having a strong parent who help promote healthy eating and exercise can help with the health problems that will occur during there lifetime. ...
July 29, 2009

English
I need help on formulating this into a paper that has to be 1500 words: I.Being a strong supportive parent can become tough especially if you’re a single parent. A.Some parents may have to work long late hours. 1.The obese children will eat whatever they like since they ...
July 28, 2009

math
1 is tillien datime 2 is gordon bluddy
March 30, 2009

Physics
29cm at 59 degress North of East
February 4, 2009

pre alg
How do u find the GCF with exponets in a 7th gr. pre alg. class?
January 11, 2009

trig
how do i do this? give the signs of the six trig functions for each angle: 74 degrees?
December 3, 2008

english 1
i have to do a paragraph and i have to write bout if i can change one thing wat wood it be and three reason ill take anything
October 20, 2008

algebra
how to do unit rate \$60 for 8 h there is more like 3/4lb and 861bagels/3d and 850cal/1.25h
October 20, 2008

chemistry
What does the statement" The properties of salt are different from the properties of the elements that go into making them" mean?
October 13, 2008

language arts
retribution means the opposite of distribution or collection.
September 15, 2008

algebra 1
what is the area of the largest circle that will fit in a square with area 64cm squared? EXPLAIN. please help this stumped me
September 9, 2008

Science
umm what is photosynthesis correct me if im wrong they use it as food combining sun and water to create a sugary substance they use as food.
September 9, 2008

science
I don't know but i have the same question on my homework and i cant find it anywhere.
February 10, 2008

Architecture
When you draw an elevation from a floorplan, how do you determine the vertical height of windows and doors?
December 11, 2007

chemistry
i have this same homework problem
October 23, 2007

chemistry
thank you but the set up for the total valance electrons is confusing?
October 23, 2007

chem
also what does it mean when they say write the abbreviated notation (based on noble gas) for s? how do i begin to do this
September 27, 2007

chem
thanks
September 27, 2007

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