# Posts by Ali

Total # Posts: 836

**Statistics**

Assume a population of any 4 numbers(suppose: 4,8,15,19). Select a random sample of size 2 with replacement from the population. List all the possible samples and their corresponding values of x̄ “x-bar” and then find the probability distribution of “X-bar...

**chemistry**

A sample of carboxylic acid is added to 50.0 mL of 2.27 M NaOH and the excess NaOH required 28.7 mL of 1.86 M HCl for neutralization. How many moles of NaOH reacted with the carboxylic acid?

**12 Math**

Graph the results of a coin toss: Toss Coins 0 20 1 12 2 5 3 1 4 0 State an equation that best fits the results (use n to represent the number of the toss). What physical phenomenon does this model? I was able to graph this, I just do not understand how to write the equation, ...

**language arts**

ill try

**language arts**

i just remembered it was main idea, purpose, and intent

**language arts**

thank you

**language arts**

what are three major parts of a summary?

**Math**

collect like terms and substitute 0for y? i think im just now doing this in my senior year in middle school algebra1

**pre algebra**

try to set up an equation im in algebra 2 so i may be able to help you

**geometry**

are the sides decimal?

**pscyhology**

technolly no one can tell you becuase its a test but lets just say its not a test they all look right

**math**

Hint: set up an equatoin

**Graph help!**

Sketch y= -(1/4) (2)^(x-4)+5 I know that the basic equation is y=2^x so is the graph translated 4 units right, vertically stretched by a factor of (1/4), reflected on the x-axis and translated up 5?

**check math question**

Thank you!

**check math question**

Given y=2^x Predict the equation for the graph that has been reflected in the y-axis, given a vertical stretch by a factor of 5, translated 2 units right and 5 units down. I have: y= -5 (2) ^ (x-2) - 5 Is this correct?

**Graphing**

Sketch y= -(1/4)(2)^(x-4)+5 by first including a table describing its major features.

**Math Graph**

Sketch y= -(1/4)(2)^(x-4)+5 by first including a table describing its major features.

**math**

In a Geometric progression the sum of its first 4 term is equal 15, and the sum of the next term is equal to 15/16. find its first term and its common ratio

**math**

in an arithmetic progression the 50th term is equal to 3, and the sum of the first 8th is equal to 23. find the first term and the common difference

**math**

a rubber ball fell from a high of 16 feet and then its rebounded until it rested, such that each time it rebounded to a high =1/2 the high rebounded to previouslly a) find the high rebounded to after the 10th term b)find the distance cover by the ball before it rested

**math**

If the sum of the first and the second terms of an infinite Geometric progression is equal to 3/8, and the sum of its term is equal to 1/2. find the common ratio of the first term of the progression

**math**

in a Geometric progression the sum of the first and the second terms is 90 and the sum of the second and the fourth terms is equal to 30.find the sum of the first 8th term in the progression

**math**

find the sum of the first 8th term of the Geometric progression, 1,3,9,27

**math**

find the sum of the 20th term a=6 and r=2/3

**Math**

27

**Math**

My ones digit is 5 more than the tens digit. i am greater than 25 and less than 35.

**Calculus - integration**

integration1-e integration 0-lnx y dy dx

**graphing**

How do you graph y= -log (base 5)(-x)? The written question is: Sketch above equation by first describing the transformations performed on the equation y= log (base 5)(x) And what is the inverse function? x=log (base 5)(y)?

**Chemistry**

and the Ksp as well im so lost! :(

**Chemistry**

what is the solubility of Pb(NO3)2, PbCl2, PbCrO4, and PbS from highest to lowest

**log equation graph**

How do you graph y= -log (base 5)(-x)? The written question is: Sketch above equation by first describing the transformations performed on the equation y= log (base 5)(x) And what is the inverse function? x=log (base 5)(y)?

**Simplify exponents**

(x^ a+b) ^ (a-b) / (x^a-2b) ^ (a+2b)

**log graph**

How do you graph y= -log (base 5)(-x)? The written question is: Sketch above equation by first describing the transformations performed on the equation y= log (base 5)(x) And what is the inverse function? x=log (base 5)(y)?

**equation of exp function**

What equation has the following features: It has the x-axis as an asymptote and it passes through (0, -1), (-1,-3) and (-2,-9)?

**Simplify exponents**

Sorry! (x^ a+b) ^ (a-b) / (x^a-2b) ^ (a+2b)

**Simplify exponents**

How do you simplify this equation: (x^a+b)^a-b / (x^a-2b) ^ a+2b

**neg exponents**

How do you write: -1/9 x^-1 with a positive exponent? also, -5 x^-2 ??

**inverse equation**

The same equation, just simply switched: if you have x+y= b, the inverse is y+x=b, which is the same thing and therefore its own inverse? Thank you!

**inverse equation**

How is any equation of the form y= -x + b its own inverse?

**logs 3**

How do you create a table to graph log (3/2) x ???

**Richter scale question**

I'm sorry, I'm still confused. Is it something like log(2) 6.1??

**Richter scale question**

I was not given any information regarding these factors, I wrote out the question I was given

**Richter scale question**

An earthquake registers 6.1 on the richter scale. What is the rating on an earthquake twice as powerful? I know: M=I/Io Then what do you do?

**logs 2**

How do you solve log(5) 20 + log (5) 10 - 3log(5) 2?

**logs**

How do you solve: log (1/3) 1 ?

**Advanced Functions 2**

I'm sorry for not using grouping symbols! You are correct, the exponents are (a-b) and (a-2b)

**Advanced Functions 2**

How do you simplify (x^a+b)^a-b / (x^a-2b) ^ a+2b

**Advanced Functions**

How do you write -1/9 x^-1 with a positive exponent? also, -5 x^-2 ??

**physics**

A cart starts from position one with a velocity of 17.0 m/s. Find the speed of the cart at positions 2 and 3 ignoring friction. will the cart reach position four? position 2= 12.0 m high position 3= 2.0 m high 4= 20.m high

**College Physics**

A 75.0 kg ladder that is 3.00 m in length is placed against a wall at an angle theta. The center of gravity of the ladder is at a point 1.20 m from the base of the ladder. The coefficient of static friction at the base of the ladder is 0.800. There is no friction between the ...

**cuyamaca**

Eddings Company had a beginning inventory of 400 units of Product XNA at a cost of $8.00 per unit. During the year, purchases were: Feb. 20 600 units at $9 Aug. 12 300 units at $11 May 5 500 units at $10 Dec. 8 200 units at $12 Eddings Company uses a periodic inventory system...

**chemistry please help**

-10.4

**calculus, please help**

0.056

**math**

another way is to prime factorize each number and take the highest power of each prime and multiply them together. For 8= 2^3 or 2x2x2 for 12=2^2x3 or 2x2x2 for 15=3x5 by taking the highest power of each prime and multiplying together we get our solution: 2^3x3x5 or 2x2x2x3x5 ...

**math**

how do you find the answer for 5/16 +3/35=

**science**

A 4.0 kg box is raised from rest a distance of 6.0 m by a vertical force of 110 N. (a) Find the work done by the force. (b) Find the work done by gravity. (c) Find the final kinetic energy of the box.

**science**

A 4.0 kg box is raised from rest a distance of 6.0 m by a vertical force of 110 N.

**space science**

false

**Statistics**

B IS SMALLEST C IS GREATER VARIATION

**Physics**

A 6.0 kg block,starting from rest, slides down a frictionless incline of length 2.0 m. When it arrives at the bottom of the incline its speed is vf. At what distance from the top of the incline is the speed of the block .5 vf

**Physics**

A 6.0 kg block,starting from rest, slides down a frictionless incline of length 2.0 m. When it arrives at the bottom of the incline its speed is vf. At what distance from the top of the incline is the speed of the block .5 vf

**math**

312

**Physics**

A boat that can travel at 4.0 km/hr in still water crosses a river with a current of 1.8 km/h. at what angle must the boat be pointed upstream to travel straight across the river? Confused on how to even set it up!

**11th grade**

The base of a pyramid is 10 cm high is the triangle shown. Find the volume of the pyramid. The hieght/leg of the traingle is 4 the base/leg is 6 and the hypothnues is 7.21

**Algebra**

10-foot ladder leans against an 8-foot wall. How far from the wall should the foot of the ladder be placed so that the top of the ladder will be exactly at the top of the wall?

**College physics**

A thin glass rod is submerged in oil. What is the critical angle for light traveling inside the rod?

**College physics**

A student has built a 20-cm-long pinhole camera for a science fair project. She wants to photograph the Washington Monument, which is 167 m (550 ft) tall, and to have the image on the film be 5.0 cm high.

**stats**

A financial institution wishes to estimate the mean balances owed by its credit card customers. The population standard deviation is estimated to be $300. If a 98 percent confidence interval is used and an interval of ±$75 is desired, how many cardholders should be ...

**marketing opportunity cost**

....

**marketing opportunity cost**

Maurice receives $100 as a birthday gift. In deciding how to spend the money, he narrows his options down to four choices: Option A, Option B, Option C, and Option D. Each option costs $100. Finally he decides on Option B. The opportunity cost of this decision is __________. A...

**stats**

Hess, Inc. sells a single product with a contribution margin of $12 per unit and fixed costs of $74,400 and sales for the current year of $100,000. How much is Hess’s break even point?

**career**

i think i would do the same thanks

**career**

If two jobs are upon you which one do you take the more sucessful one which you do not like the actions taking place or the less sucessful one which you kinda like.

**world history**

thank you you're awesome

**world history**

Who was the Columbian Exchange named after and why?

**AED 204**

rayna,try something that you think is a problem in your school that can relate to this.

**math 7th grade**

A(-3,4) ---> A'(3,4) B(-5,2) ---> B'(5,2) im a seventh grade math teachers daughter i should know

**Statistics**

an experiment consists of 4 tosses of a coin.denoting the outcomes HHTH,THTT,..and assuming that all 16 outcomes are equally likely, find the probability distribution for the total number of heads.

**Literature**

give 5 differences and 3 similarities between plays and novels

**Physics**

Two charged smoke particles exert a force of 4.2x10^-2 N on each other. What will be the force if they are moved so they are only one eighth as far apart? F= 4.2x10^-2 N K= 8.99x10^9 e= 1.6x10^-19 Do I solve for r even though they're asking me to find the force?

**Intermediate Accounting**

I had a problem with this question too, do a search for Ch6 since they won't let me post websites here. Look at the bottom of the examples and I think it will make it a little more clear.

**maths**

consider the quadratic functon y=-3(x-1)(x+2)

**Physics 100**

A bat flying in a cave emits a sound and receives its echo 0.25 s later. How far away is the cave wall?

**fc college**

Suppose you took loan from a bank of amount 800£ at 8% interest compounded semi-annually for three years. Find the compound interest.

**trig**

Verify the identity sin 3x cos 3x = 1/2 sin 6x can you show step by step please

**Langusge Arts**

Can you find 3 metaphors and 10 alliterations in this poem? THE Witch 1.She comes back night, in fearsome flight, 2. In garments black as pitch, 3.The queen of doom upon her broom, 4.The wild and wicked witch, 5.A cackling crone with brittle bones 6.And desiccated limbs, 7.Two...

**--------**

Using the following letters once, what word can you make: A,E,M,R,S,S,T.

**language arts/research paper topic**

i myself need a third idea to do a research project on as a 7th grade advanced english student so far i have abusive teenage relationships , and anastasia romanov

**math**

A weight attached to a spring is pulled down 4 inches below the equilibrium position. Assuming that the frequency of the system is 8/pi cycles per second, determine a trigonometric model that gives the position of the weight at time t seconds.

**world literature**

How does world literature effect the U.s society?

**Probability/Stas**

There are 20 red yellow and green tiles in a bag. 1/2 of the tiles are not yellow. 1/5 of the tiles are red. What is the probability of randomly selecting a colored tile from the bag that is NOT green?

**accounting**

B) Membership on the budgeting committee is restricted most often to accountants because the budget involves numbers. Master budget preparation is normally supervised by a committee. The budget committee is responsible for settling disputes among various departments over ...

**chemistry**

the answer is 11.17 or not

**chemistry**

How many grams of iron(III) nitrate.9H2O could be formed from the reaction of 3.676 g of iron with excess HNO3? Please can u explain? i try balance the question i couldnt.

**college**

Explain why, in terms of job performance and efficiency, knowing medical billing terms is critical for working in the health care field. Respond in at least 150 words and provide specific examples.

**Math**

No

**math please help!!!!!!!!!!!!!!!!!!!!!**

$42

**math**

What is the probability of drawing a red checker from a bag of 9 black checkers and 6 red checkers, replacing it, and drawing it again?

**Math**

So Hannah wakes up at 7:56 , Beth wakes up at 7:03. Hannah has breakfast at 8:36 and Beth has Breakfast at 7:50. Problem 1 : How many minutes more did Hannah wake up from Beth. 7:56 -7:03 0:53 Problem 2 : Is 8 : 36 to 7 : 56 I'm not understanding!

**math**

HOW DO i SET THIS UP AS A PROPORTION? 2,640 FT=X MILES