Wednesday
January 18, 2017

Posts by SAM

Total # Posts: 5,088

Physical Science
A step-up transformer has primary coil with 15 turns. How many turns would be required in the secondary coil to increase the voltage from 60 v to 160 v? 15 x=160/80 x=80/15 x=?
January 12, 2017

Math
Convert $e^{-\pi i}$ to rectangular form. Not sure how to start this problem, should I use Euler's formula? Can anyone help provide the steps please? Thanks
January 11, 2017

IPC
The value of acceleration due to gravity (g) on a point 10,000 kilometers above sea level is about 1.49 meters/second2. How much will an object, which weighs 98 newtons on the surface of Earth, weigh on this point? The value of acceleration due to gravity on Earth is 9.8 ...
January 11, 2017

Math
Suppose that 32 feet of fencing is available to enclose a rectangular garden., one side of which will be against the side of a house. What dimensions of the garden will guarantee a maximum area?
January 9, 2017

Math
A shop owner blends three types of coffee,A,B,C.in the ratio 3:5:7 a) calculate the weight of each type of coffee in 45kg of three blended mixture. b) given that type A coffee cost $7 per kg, type B coffee costs $10 kg and type C coffee costs $13 per kg, calculate the cost per...
December 31, 2016

micro economics I
show the MRS for Cobb Douglass preference is ax2/bx1
December 28, 2016

maths
The line segment connecting A(-18,8) and B(-10,-8) is divided in the ratio 1:3 by point C. The coordinates of C are... Please show your working and thx for taking your time to answer this question.
December 23, 2016

Algebra 1
A square painting is surrounded by a frame. the outside edges of the frame are x inches in length, and the frame is 3 inches thick. What is the total area of the frame? A)-12x+36 B)12x-36 C)x^2+12x+36 D)x^2-12x-36 Is it C or D?
December 22, 2016

Algebra
Wait, nevermind my previous answer...is it B?
December 22, 2016

Algebra
What type of polynomial is this? 2 - 5x^3 + 6x A)not a polynomial B)cubic trinomial C)quadric trinomial D)fourth-degree trinomial Since the degree is 4, I think the answer is D. Is this correct?
December 22, 2016

Algebra 1
GCF*
December 20, 2016

Algebra 1
Find the GFC of the terms of the polynomial. 14z^5-70z^4+10z^3 Is the answer 14? I'm not really sure. Can someone please help?
December 20, 2016

Management
can you tell me the reason
December 17, 2016

Management
planning about the companys goal
December 17, 2016

Management
Is pressure of work barrier for planning
December 17, 2016

Management
Is pressure of work a barrier for planning?
December 17, 2016

algerbra
an object is projected upward at a rate of 96 feet per second. find the time when it is 144 feet above the ground
December 15, 2016

algebra
1/b(2b-10)=17 1/b*2b=2 1/b*10=10/b 2-10/b=17 -10/b=15 The answer is -2/3
December 14, 2016

pre-calculus
A rectangular box has a perimeter of 50 inches. Find the length and width of the box that would give the maximum area. Find the maximum possible area of the box.
December 12, 2016

pre-calculus
A rectangular box has a perimeter of 36 inches. Find the length and width of the box that would give the maximum area. e. l = 9, w = 9 f. l = 81, w = 9 g. l = 27, w = 9 h. l = 18, w = 18
December 12, 2016

pre-calculus
A rectangular box has a perimeter of 36 inches. Which of the following equations represents the area of the rectangular box in terms of its width, w? a. A = 36w - w2 b. A = 18w - w2 c. A = 36 - w2 d. A = 18 - w2
December 12, 2016

Chemistry
Thank you!
December 12, 2016

Chemistry
What is the concentration of Pb in mg/L , if you have 25 mg Pb in 5kg of seawater? (note: density of seawater is 1.025 kg/L)
December 12, 2016

Chemistry
Using the fact that fresh water has a density of 1000 kg/m3 , show that 5ppm Pb = 5 mg/L Pb .
December 12, 2016

precalculus
convert r sin? = 2 to rectangular form
December 9, 2016

pre calculus
what is the distance between the pole and the directrix of r = 4/-2-6sintheta
December 9, 2016

precalculus
Find the eccentricity of the function r = 4/-2-6sintheta
December 9, 2016

LA
How is Barrio Boy characteristic of nonfiction and "A Day's Wait" characteristic of fiction? Ernesto in Barrio Boy is a believable character, while the boy in "A Day's Wait" ...
December 8, 2016

LA Help!
we need help coming up with an idea.
December 6, 2016

Language Arts
Your answers are correct!
December 5, 2016

English
How do the themes like the will to live, the importance of storytelling, and the nature of religious belief help drive the plot forward? I don't really know how to answer this.
December 4, 2016

Math
Elena has 15 more dimes than nickels. If she has $2.55, how many nickels does she have?
November 30, 2016

Environmental Science
All is correct except for 9 which is false
November 25, 2016

math
(x+4)(x-3) x=-4 x=3
November 24, 2016

Spanish
Ok, thank you. (=
November 22, 2016

Spanish
Thanks! Can you answer another question? What is the difference between a plaza in a Spanish speaking country and one in Los Estados Unidos? A)in Los Estados Unidos, a plaza does not serve a social purpose*** B)in Los Estados Unidos, only small towns have plazas C)in Los ...
November 22, 2016

Spanish
**Image of girls at a cafe.** Donde estan las chicas? A)en el cafe*** B)a la cafe C)en la cafe D)en al cafe Am I correct?
November 22, 2016

math
Water is being pumped at a rate of 100L/H. How long will it take to pump 550L
November 20, 2016

Spanish
Which of the following best describes what a movie theater in a small Honduras town might be like? a) it would host an international festival b) it would show one movie per week c) it would be on the outskirts of town d) it would only open on weekends*** Pls, help!
November 17, 2016

Spanish
Please help, I would really appreciate it!
November 17, 2016

Spanish
Which word best completes the following sentence? The standard variety of Spanish is considered _______. a. natural b. colorful c. easy*** d. neutral I'm not really sure about this one, someone pls help!?
November 17, 2016

Social Studies
Come on Janelle, you could have googled it
November 17, 2016

ALGEBRA
A baseball team has 13 players; how many possible batting orders can the coach make if there are 9 players in the batting lineup?Hello can you help with this problem i try different ways to solve it but it is not match with my answers A. 235,368 B. 1,235,520 C. 879,523 D. 514,...
November 16, 2016

math
can somebody check this problem thank you.
November 15, 2016

algebra
4b/2 + 3 = 11 + b i know the answer is b=8 but i want to know how
November 14, 2016

Spanish
Writeacher?
November 14, 2016

Spanish
Ok. #1 ser and #2 is estar?
November 14, 2016

Spanish
So it would be ser?
November 14, 2016

Spanish
Sorry, just saw your reply, ok. The verb is "is", therefore in Spanish that would be estar or ser?
November 14, 2016

Spanish
Also, Which verb would you use to explain that the movie is being shown in the theater? A)deber B)estar C)ser*** D)hacer Am I correct on this one?
November 14, 2016

Spanish
Which Spanish verb would you use to ask the following question? "What is your name?" A)estar B)ser C)hacer D)tener Is it D? I'm not sure, can someone pls help?
November 14, 2016

physics
thank you
November 13, 2016

physics
What is the direction and magnitude of the net force acting on the hot air balloon? It has an arrow up with 6300, an arrow down with 3200, an arrow to the right of 1350 and an arrow left with 745. Is this how to do it and if so, how do I convert the sin of theta into degrees. ...
November 13, 2016

physics
vf2-vi2 /2deltaX (0-48)2( (103 m/km)2 (1 h/3600 s)2/2(14.9m) -4.8x103m/s2 is what I had so far. It didn't save when I posted.
November 13, 2016

physics
During a crash, a race car driver decelerates from 48.0 m/s to 0 m/s in a distance of 14.9 m. If the drivers mass is 70.0 kg, what is the average force acting on the driver during the crash? This is what I have so far. Am I starting right?
November 13, 2016

Georgia State History
Thank you. That's very helpful...(=
November 10, 2016

Georgia State History
I have to write an essay about MLK Jr. and I need to have a speech he made in Georgia. Can someone please help me and give me any suggestion of speeches made by MLK Jr. in Georgia.
November 10, 2016

Maths
A length of timber is to be cut into 7 pieces using a hand saw. How many cuts will need to be made
November 9, 2016

phisics
a car starts from rest and is accelerated uniformly and the rest of 2m/s2 for 6seconds it then maintaining a constant speed for half a minutes.The brake are then applied and then vehicles unifomly restarted to rest in 5seconds.find maxmum speed in km/h and the total distance ...
November 8, 2016

math
Ellie and Sara see 8 birds in the tree. Ellie see 2 fewer birds than Sara .sara sees 5 birds how many birds does Ellie see
November 7, 2016

Science
Ok, thanks. (=
November 7, 2016

Science
A metal from group 1 and a nonmetal from group 17 are? A. Not likely to bond. B. Likely to form a covalent bond. C. Likely to form an ionic bond.*** D. Likely to form a metalloid. Is this correct?
November 7, 2016

Language Arts
Please help!!!
November 6, 2016

Language Arts
Can someone please help me? I would really appreciate it.
November 6, 2016

Language Arts
Which of the following excerpts from the selection use the active voice in the first sentence and the passive voice in the second? A)There is little, if any, "storm" in the new movie Storm Fever. Aren't actors supposed to act, and aren't directors suppose to ...
November 6, 2016

Spanish
Am I correct?
November 5, 2016

Spanish
What is the correct way to say "I prefer milk" in Spanish? A. Yo prefero leche B. Yo prefiero leche*** C. Yo preferir leche D. Yo priefero leche
November 5, 2016

Calculus
A particle is moving with acceleration a(t) = 24 t + 4. Its position at time t =0 is s(0) = 15 and its velocity at time t =0 is v(0) = 11. What is its position at time t = 9?
November 4, 2016

Teas 6
I'm taking teas 6 soon can semeone help plz
November 2, 2016

piedad elementary school
Which of the given fractions is NOT equal to 1/3? a.) 100/300 b.) 10/30 c.) 3/10 d.) 2/6?
November 2, 2016

Algebra
here's the table: Number of | Perimeter | Ordered | Pentagons | (y) | Pair | (x) | | (x,y) | 1 | 15 | (1, 15) | 2 | 24 | (2, 24) | 3 | 33 | (3, 33) |
November 1, 2016

History
Ok, thanks.
October 31, 2016

History
Am I correct?
October 31, 2016

History
Which statement best explains the reason the Americans were never able to capture St. Augustine in Florida. A) A lack of cooperation among commanders led to poor execution.*** B) Poor planning and incompetent leaders led to disastrous outcomes. C) The Americans were not as ...
October 31, 2016

Algebra
Cindy bought a car for $14000. The car is depreciating every year at a rate of 2%. Write an equation and what is the value of her car after 5 years.
October 30, 2016

chemistry
An 80.0-gram sample of a gas was heated from 25 °C to 225 °C. During this process, 346 J of work was done by the system and its internal energy increased by 8305 J. What is the specific heat of the gas?
October 27, 2016

chemistry
Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 7.00 MJ of energy (in the form of heat) if the temperature of the sodium is not to increase by more than 10.0 °C? Use CP= 30.8 J/(K·mol) for Na(l) ...
October 27, 2016

chemistry
When 1367 J of heat energy is added to 44.1 g of hexane, C6H14, the temperature increases by 13.7 °C. Calculate the molar heat capacity of C6H14.
October 27, 2016

chemistry
In a constant-pressure calorimeter, 60.0 mL of 0.300 M Ba(OH)2 was added to 60.0 mL of 0.600 M HCl. The reaction caused the temperature of the solution to rise from 21.75 °C to 25.84 °C. If the solution has the same density and specific heat as water (1.00 g/mL and 4....
October 27, 2016

chemistry
An 80.0-gram sample of a gas was heated from 25 °C to 225 °C. During this process, 346 J of work was done by the system and its internal energy increased by 8305 J. What is the specific heat of the gas?
October 27, 2016

chemistry
If you combine 360.0 mL of water at 25.00 °C and 120.0 mL of water at 95.00 °C, what is the final temperature of the mixture? Use 1.00 g/mL as the density of water.
October 27, 2016

Math
A hemispherical tank has a diameter 10cm is fixed by water issuing from a pipe of radius 20cm at 2m per second. Calculate currently to 3.s.f the time in mind Tessa it take to fixed the tank.
October 27, 2016

Calculus
The measurement of the radius of a circle is 16 inches, with a possible error of .25 inches. Use differentials to approximate the possible propagated error in computing the area of the circle and find the percent error. I've gotten to 2Pi*16*.25 but don't know what to ...
October 25, 2016

Social Studies
He didn't try hard enough.
October 24, 2016

algebra/AP physcis
how do i solve for v in the equation: v^2/.6=1.2v^2/.6 +9.8
October 20, 2016

Physics
A stone is tied to a string (length = 0.600 m) and whirled in a circle at the same constant speed in two different ways. First, the circle is horizontal and the string is nearly parallel to the ground. Next, the circle is vertical. In the vertical case the maximum tension in ...
October 20, 2016

All of math
What are all the answers to unit 4 lesson 11
October 20, 2016

Chemistry
I have a 0.6573g mixture of NaHCO3 and Na2CO3. Calculate the mass of NaHCO3 and Na2CO3 in the unknown mixture.Also calculate the mass of NaCl formed in the reaction of the mixture and HCl.
October 20, 2016

PHYSICS- PROJECTILE MOTION
Crickets Chirpy and Milada jump from the top of a vertical cliff. Chirpy just drops and reaches the ground in 3.10 s , while Milada jumps horizontally with an initial speed of 89.0 cm/s. How far from the base of the cliff will Milada hit the ground? Ignore air resistance.
October 20, 2016

PHYSICS- PROJECTILE MOTION
A physics book slides off a horizontal table top with a speed of 1.90 m/s. It strikes the floor after a time of 0.410 s. Ignore air resistance. a) Find the magnitude of the horizontal component of the book's velocity just before the book reaches the floor. b) Find the ...
October 20, 2016

chemistry
what is the skeleton chemical equation of this? And Balanced equation. Copper (ii) chloride + Lithium --> Lithium Chloride + Copper
October 18, 2016

chemistry
what is the skeleton chemical equation of this? And Balanced equation. Copper (ii) chloride + Lithium --> Lithium Chloride + Copper
October 18, 2016

Math
nothing
October 17, 2016

Math
thank you and sorry damon
October 17, 2016

Math
Jean Claude equally shared a box of chocolates with two of his friends. The box weighed 9/5 pounds. How many pounds of chocolate did each person receive?
October 17, 2016

Statistics
A science teacher gives a test with 15 questions. This teacher is a hard grader. The teacher assigns points in the following manner: a correct answer = +1 point, an incorrect answer = -1 point, no answer = 0 points. So scores on the test could range from +15 to -15. The ...
October 14, 2016

Statistics
Suppose that 40 students take a quiz and everyone in the class scores an 80. The standard deviation of scores for this quiz is: 80 2 0
October 14, 2016

Statistics
A college statistics class conducted a survey of how students spend their money. They asked 25 students to estimate how much money they typically spend each week on fast food. They determined that the mean amount spent on fast food is $31.52 with a standard deviation of $21.60...
October 14, 2016

maths
A man buys lemon at 6 for rs 10 and sells at 8 for rs.15 find his gain percent
October 10, 2016

chemistry
Consider the following reaction. 4Fe + 3O2 2Fe2O3 a. How many moles of O2 are required to react completely with 46.7 mg of Fe? How many grams Fe2O3, are produced from the complete reaction of 20.1 g of Fe?
October 9, 2016

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