Posts by ALEXIS

Total # Posts: 990

chemistry
A student mixed 75.0 mL of water containing 0.75 mol HCl at 25�C with 75.0 mL of water containing 0.75 mol of NaOH at 25�C in a foam cup calorimeter. The temperature of the resulting solution increased to 35�C. How much heat in kilojoules was released by ...

Social Studies
Ok, so in many ways the relation between China and Japan reflect what we've already seen between Russia and Byzantium. What were the most important things that Japan borrowed from China? Chinese influence in Japan reached its height during the time of Prince Shotoku. What ...

Global History
This concerns the feudal powers in Japan: Ok, so in many ways the relation between China and Japan reflect what we've already seen between Russia and Byzantium. What were the most important things that Japan borrowed from China? Chinese influence in Japan reached its ...

Physics
A car travels 105 km to the north at 65km/hr and then turns around and travels 25km at 80km/hr. What is the difference between the average speed and the average velocity on this trip?

Math
A person invests a total of 22,00 in 2 accounts. 1 investment earned 7% while the other earned 5.5%. The amount of investments earned for one year was $1312. How much was invested in each account?

MATH
DESCRIBE THE ANGLE SUM THEORY AND HOW THE FORMULA WORKS. HELP ME PLEASE I NEED TO STUDY FOR A TEST

Math
frame= 15x * 15x = 225x^2 mirror= pi(r)^2 = pi(25x)^2 area of metal(answer in factored form)=225x^2-(25)pi x2 = 25x^2(25-pi)

chemistry
What is the balanced equation for 0.60M Phosphoric acid and 1.85M NaOH?

math
The area of a rectangle is 24 m2. The length of this rectangle is 6 m. Which equation could be used to determine the width, w?

lac english 1 a
short stories memoirs by ernesto gaarza and rusell baker

lac english 1 a
how are bario boy and no gumtion alike different In what ways are the authors’ choices and depictions related to the subject matter of their stories?

Physics
When jumping straight down, you can be seriously injured if you land stiff-legged. One way to avoid injury is to bend your knees upon landing to reduce the force of the impact. A 75 kg man just before contact with the ground has a speed of 6.1 m/s. (a) In a stiff-legged ...

shurley grammar
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math
Suppose t teachers and s students visit the museum for a field trip. The price of a ticket for a teacher is a dollars and the price of a ticket for a student is b dollars. Which of the following expressions represents the cost, in dollars, of 2 teacher tickets and 28 student ...

MATH
Juan makes $6.50 an hour plus an extra $15.25 per week. Last week he earned $47.75. Look at this equation that represents Juan's earnings ;ast week. 6.50h+15.25=$47.75 How many hours did Juan work?

math
Juan makes $6.50 an hour plus an extra $15.25 per week. Last week he earned $47.75. Look at this equation that represents Juan's earnings ;ast week. 6.50h+15.25=$47.75 How many hours did Juan work?

Math
Given the hyperbola[(x+3)^2/4]-[(y-1)^2/9]=1,find the equations of the asymptotes.

4t Grade Math
Please help me write a multiplication sentence for 3X9=

physics
An ice skater glides around a rink at a constant speed of 2 m/s. Is the skater accelerating?

science
music

Math
How do you find the total earnings when given the salary, commission rate, and sales? EX question: $1,ooo plus 6% on sales of 2,000

math
24

English
What is the meaning of this stanza? Money maketh festival, Wine she buys, and beds can strow; Round the necks of captains tall, Money wins them chains to throw, Marches soldiers to and fro, Gaineth ladies with sweet eyes: These alone can ne'er bestow Youth, and health, and...

4th grade Math
I need help it the same as what Zack's problem is please and thank you.

math - algebra
f(t) is an exponential function with f(0) = 200 and f(3) = 2000. a) Use the form f(t) = Pe^rt to find the equation of this exponential function. b) In the form f(x) = Pa^x, a is the growth factor. find the growth factor. c)What input value gives an output value of 5,000?

math
CAN YOU HELP ME ? WHAT ARE THE TWO HAND ON THE CLOCK CALLED. THE LONG ONE AND THE SHORT ONE. THANK YOU ALEXIS LAANG

math - algebra
f(t) is an exponential function with f(0) = 200 and f(3) = 2000. a) Use the form f(t) = Pe^rt to find the equation of this exponential function. b) In the form f(x) = Pa^x, a is the growth factor. find the growth factor. c)What input value gives an output value of 5,000?

math - algebra
f(t) is an exponential function with f(0) = 200 and f(3) = 2000. a) Use the form f(t) = Pe^rt to find the equation of this exponential function. b) In the form f(x) = Pa^x, a is the growth factor. find the growth factor. c)What input value gives an output value of 5,000?

science
procedure

Calculus
What is the derivative of -3x((x+1)^1/2)

Calculus
what is the derivative of -3x((x+1)^1/2)?

Calculus
Find the value of the derivative at each indicated extremum.

Calculus
An air traffic controller spots 2 planes at the same altitude converging on a point as they fly at right angles to each other. One plane is 150 miles from the point moving at 450 miles per hour. The other plane is 200 miles from the point moving at 600 miles per hour. At what ...

Physics
You need to divide the diameter by two because the equation requires the radius not the diameter.

Algebra
What is the 20th term in the following arithmetic sequence? 1/2, 1, 3/2, 2

Algebra
In how many ways can a teacher arrange 10 students in the front row if there are 25 total students?

Algebra
Given the hyperbola (x2/4) – (y2/9) = 1, find the equations for its asymptotes A. x = (1/3)y, x = (–1/3)y B. y = (3/2)x, y = (–3/2)x C. y = (1/3)x, y = (–1/3)x D. x = (3/2)y, x = (–3/2)y

Math
3ã20(2ã5-7)

Math-Ellipses
What is the equation of the ellipse with co-vertices (0, 2), (0, -2) and vertices (3, 0), (-3, 0)

Math
Find the focus of the parabola x = –2(y – 3)2 - 2

Math
What is the equation for the parabola with vertex (0, 0) and focus (5, 0)

Algebra
What isthe focus of the parabola y = (1/8)(x – 5)^2 - 3

Math
It goes to the left? Idk.

Math
What is the opening direction of the parabola x = –2y2. A.left B.right C.up D.down

chemistry
how many carbon-hydrogen bonds does ethane have? how many carbon-carbon bonds does ethane have? is it 6 for the 1st and 1 for the 2nd?

English
How does Shakespeare work loyalty and betrayal into the play King Lear. Context of order vs. chaos?

history
These lawyers, and men of learning, and moneyed men, that talk so finely, and gloss over matters so smoothly, to make us poor illiterate people swallow down the pill, expect to get into Congress themselves...and then they will swallow up all us little folks, like the great ...

English
What are some examples of Loyalty in King Lear?

math
Given that AC and AE are common external tangents of circle G and circle D, FE = 15, GF = 3, and AG = 5, which is the length of AC?

English
It's Act IV; Scene VI; Lines 26- 28

English
I have actually done it like that, and I still don't understand the importance of the quote.

English
What is the meaning of this quote and how does it relate to the King Lear play? Give me your hand. You are now within a foot Of th' extreme verge. For all beneath the moon Would I not leap upright.

Alg/2 Trig
Given the functions f(x)=-x^2+7 and g(x)=3x+4 find f(g(-5)) Write the composition above using an alternative notation.

physics
A ball is thrown horizontally from the roof of a building 59.0 tall and lands 27.4 from the base. What was the ball's initial speed?

Math
Mickey lives 35 miles away from his grandparents'home.His aunt Roz lives 24 miles farther than his grandparents.How far does Mickey live from his aunt Roz?

Physics
A ball is thrown upward from the edge of a platform 15 m above the ground. The ball rises 12 m then falls to the ground. What is the vertical displacement of the ball?

physical science
A 65 kilogram person stands on a diving board 15 meters above the water. figure the GPE. show formula and work

4th grade math
Thank you so much Ms. Sue

4th grade math
1,800 = eighteen hundred 1,800 = one thousand, eight hundred 91,000 = ninety one thousand 91,000 = ????

4th grade math
name each number in two different ways 2,700 6,300 1,800 91,000 Thanks

Geometry
Point C is the center of the circle. Angle ACB measures56 degrees What is the measure of arc AB? How do you work this out?

algebra
B=3 A=9 B2+5a-20

math 5th grade
What is the longest multiplication problem for 180

Geometry
ABCD is a rectangle. Find x and y using the following information: AB = -2x DC = 7y + 1 AD = -x BC = 2y + 2

Geometry
ABCD is a parallelogram. Find x and y using the following information: AB = 5x - 2y DC = 4 AD = y BC = 5 - x

Math
you learn geometry,long division, fractions, adding fractions, subtracting fractions, multiplying fractions, dividing fractions, and a whole bunch of other stuff i can't even think of.

Geometry
ABCD is a parallelogram. If angle B is equal to 2x and angle A is equal to x + 30, find x.

Geometry
ABCD is a parallelogram. If AB = 2x - y, CD = 7, BC = x + y , AD = 2 find x and y.

geometry
Triangle ABC is congruent to triangle DEF. If the length of AB is 12 feet and the length of AC is 10 feet. Find the length of DE. can someone please help me on this question please and thank youu :)

physics
A plastic tube allows a flow of 15.5 cm3 /s of water through it. How long will it take to fill a 206 cm 3 bottle with water

math
Evaluate the expression n+(-5) for each value of n. n=312

Maths
What is the estimate quotient of the following: 48.3 divided by 7

Maths
What is the estimate of the following quotient: 48.3 divide by 7

Substitution Method
4x+5y=12 2y=6x+8

3rd gr math - Tenths
Question reads....Explain how to find the mix number and decimal for nine and one tenth. Please help.

Algebra 2
Find the sum of the infinite series 1/3+1/9+1/27+... if it exists

biology
do mutations form new or old genes????

science
While doing a scinece project with my daughter we attempted to melt two sugar cubes. We poured alcohol on one sugar cube and vinegar on the other. The sugar cube with the alcohol melted at a faster speed. Why was this?

math
a ladder rests against the top of a wall. The head of a person 3.5 feet tall just touches the ladder. The person is 3 feet from the wall and 7 feet from the foot of the ladder. What is the height of the wall?

AP US History Exam
Is it worth it to study for the AP US HIstory or AP European history exams the night before, or should I just get a lot of sleep and eat breakfast?

biology
could you put the following into order from smallest to largest?? DNA GENE CHROMOSOME

math
1.8

biology
To ensure that the mother will have mature egg cells available for in vitro fertiliazation, she must be treated with chemicals that regulate her reproductive cycle. identify these chemicals tha tregulate the female reproductive cycle. Please help me

geometry
how do you find the area of an equilateral triangle with the perimeter of 30ft.

help me in math!
is -5 a real #? rational #? irrational #? whole #? integer? counting (natural) #?

math help me plz!!
i recievbed 200.00$ for a gradution gift. i spent 50% on clothing. 20%on cds. 25% on movies. and 5% on savings. how much money did i spent on each catergory?

math help me!!
is square root of 56 a rational number? explain uranswer using what you know about rational and irrational numbers. thnx alot!

chemistry
A 3.0−L sample of a 6.2M NaCl solution is diluted to 75L .

7th grade math
how to put 26,000 in a notation

geometry
The perimeter of the rectangle is 19 inches. The perimeter of the inscribed triangle is also 19 inches. What is the width of the rectangle? What is the lengths of the rectangle? sides of isosceles triangle = leng of rectangle + 2 base = width of rectangle

Chemistry
which equation represents an oxidation-reduction reaction? 1.HCl+KOH-->KCl+H2O 2.4HCl+MnO2-->MnCl2+2H2O+Cl2 3.2HCl+CaCO3-->CaCl2+H2O+CO2 4.2HCl+FeS-->FeCl2+H2S

Chemistry
Zn(s)+Cu2+(aq)-->Zn2+(aq)+Cu(s) which particles must be transferred from one reactant to the other reactant ? 1.ions 2.neutrons 3.protons 4.electrons 4?

Chemistry
a redox reaction is a reaction in which 1.only reduction occurs 2.only oxidation occurs 3.reduction&oxidation occur at the same time 4.reduction occurs first and then oxidation occurs i think its 3 or 4.

Chemistry
In the reaction: Cu(s) + 2 Ag+(aq) ---> Cu2+(aq) + 2 Ag(s, the oxidizing agent is ? 1.Cu 2.Cu2+ 3.Ag+ 4.Ag i know its Ag but is it Ag+ or just Ag? what does that extra plus mean?

Chemistry
in the reaction:Ni+SN4+-->Ni2+ (+)Sn2+ which species has been reduced? 1.Ni 2.Sn4+ 3.Ni2+ 4.Sn2+ i know its def Sn but im not sure which one.

Chemistry
In the reaction: Cu(s) + 2 Ag+(aq) ---> Cu2+(aq) + 2 Ag(s) 1.Cu 2.Cu2+ 3.Ag+ 4.Ag i know its Ag but is it Ag+ or just Ag? what does that extra plus mean?

Chemistry
In the reaction 2H2S + 3O2 -> 2SO2 +2H2O, the oxidizing agent is 1.oxygen 2.water 3.sulfur dioxide 4.hydrogen sulfide oxygen?

Chemistry
all redox reactions involve 1.the gain of electrons only 2.the loss of electrons only 3.both the gain and the loss of electrons 4.neither the gain nor the loss of electrons 3, right?

Chemistry
human blood contains dissolved carbonc acid in equilibrium with carbon dioxide and water according to the reaction: h2CO3(aq)<-->CO2(aq)+H2O(l) explain why decreasing the concentration of Co2 will ultimately decrease the concentration of H2CO3.

Math
The Table shows some common scales used in a model railroading.For each scale,find the length of a model of an 82-foot long boxcar.Give the length of each model in inches. Scale Name/Scale N 1:160, S 1:64, O 1:48

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