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Posts by Sam

Total # Posts: 5,197

Math
Thanks so much

Math
If 4.5 inches on a map convers 270 miles, what is the scale of inches to miles?

Math
chris cuts boards that are 2/3 feet long. He has a 7/9 foot long board of wood. How many yards can he cut?

Physics
Two point charges each have a value of 3 ?C and are 10 cm apart. What is the electric field at the midpoint between the two charges?

Precalculus
Yeah, that is the real solution. I also need to find the complex solution as well.

Precalculus
The question latex was messed up, it is: Find all $x$ such that \[x^6 = (x+1)^6.\]

Precalculus
Find all xx such that [x6x6 = (x+1)6(x+1)6]. So far, I have found the real solution x= -1212, and the complex solution x = -?1????3?13. Are there more, and if so what/how would be the most efficient find all the solutions to this problem? I am struggling to find the rest of ...

Math
What is the value of x if 36x=4 ?

Math
36x=4

Precalculus
What are all the complex and real solutions for x? Where: (x+1)^6 = x^6 and x is complex? The real solution is -1/2 and, the only other solution I could find was x = -(-1)^(1/3)

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=?

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

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 ...

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?

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...

micro economics I
show the MRS for Cobb Douglass preference is ax2/bx1

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.

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?

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

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?

Algebra 1
GCF*

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?

Management
can you tell me the reason

Management
planning about the companys goal

Management
Is pressure of work barrier for planning

Management
Is pressure of work a barrier for planning?

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

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

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.

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

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

Chemistry
Thank you!

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)

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

precalculus
convert r sin? = 2 to rectangular form

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

precalculus
Find the eccentricity of the function r = 4/-2-6sintheta

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" ...

LA Help!
we need help coming up with an idea.

Language Arts
Your answers are correct!

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.

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

Environmental Science
All is correct except for 9 which is false

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

Spanish
Ok, thank you. (=

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 ...

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?

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

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!

Spanish
Please help, I would really appreciate it!

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!?

Social Studies
Come on Janelle, you could have googled it

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,...

math
can somebody check this problem thank you.

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

Spanish
Writeacher?

Spanish
Ok. #1 ser and #2 is estar?

Spanish
So it would be ser?

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

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?

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?

physics
thank you

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. ...

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.

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?

Georgia State History
Thank you. That's very helpful...(=

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.

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

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 ...

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

Science
Ok, thanks. (=

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?

Language Arts
Please help!!!

Language Arts
Can someone please help me? I would really appreciate it.

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 ...

Spanish
Am I correct?

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

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?

Teas 6
I'm taking teas 6 soon can semeone help plz

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?

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) |

History
Ok, thanks.

History
Am I correct?

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 ...

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.

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?

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) ...

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.

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....

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?

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.

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.

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 ...

Social Studies
He didn't try hard enough.

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

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 ...

All of math
What are all the answers to unit 4 lesson 11

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.

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.

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 ...

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