# Posts by eric

Total # Posts: 801

**Math**

Kayla has 3 yards of ribbon. She wants to cut the ribbon into pieces that are 1/4 yard long. How many pieces of ribbon will Kayla have

*March 9, 2017*

**Chemistry**

Suppose a student diluted and titrated a bleach unknown exactly as described in the experimental procedure, except only a single titration was performed which required 16.22 mL of 0.100 M Na2S2O3. The density of the original, undiluted bleach unknown was g/mL. If the number of...

*March 1, 2017*

**Chemistry**

Suppose a student diluted and titrated a bleach unknown exactly as described in the experimental procedure, except only a single titration was performed which required 16.22 mL of 0.100 M Na2S2O3. The density of the original, undiluted bleach unknown was g/mL. If the number of...

*March 1, 2017*

**algebra**

Thank you for your help.

*February 14, 2017*

**algebra**

Want to make sure I am doing this correctly. Use the Intermediate Value Theorem for polynomials to show that the polynomial function f(x)has zero between the numbers given. f(x)=3x^2-x-4 ; 1 and 2 3(1)^2-1-4= - 2 below zero 3(2)^2-1-4= 6 above zero Am I doing this problem correct

*February 14, 2017*

**Chemistry 2**

The molar heat of solution of ammonia is ?30.50 kJ/mol. What happens to the temperature of water when ammonia is added to it? I simply don't know how to answer this and wouldn't ask otherwise. I would be very grateful for assistance.

*February 12, 2017*

**Algebra**

I have that but it tells me to check for extraneous solutions and that is where I am lost for this problem

*February 8, 2017*

**Algebra**

X=-6/7 This was answer to the problem

*February 8, 2017*

**Algebra**

I have answered the question but not sure how to check for extraneous solution. x/(5x+4)=3 The answer is -6/7

*February 8, 2017*

**Physics**

A circus cat has been trained to leap off a 12-m-high platform and land on a pillow. The cat leaps off at v0 = 3.6 m/s and an angle ? = 37°

*February 6, 2017*

**Algebra**

Need help figuring this problem out. The following points are on the graph of: y=f(x) (-5,0),(-2,2),(0,0),(2,-4) and (4,0) Use theorem to identify the corresponding points on the transformed functions. y = 2f(x-3)-2

*February 4, 2017*

**statistics**

The closing price of Schnur Sporting Goods Incv. common stock is uniformly distributed between $20 and $30 per share. Draw the uniform distribution. What are the height and base?

*February 4, 2017*

**Pre Cal**

Write an expanded polynomial equation based on the following information. A cubic function with a zero at x=3 (with multiplicity 2), a zero at x=2, and a constance term of 18.

*January 28, 2017*

**Math**

Sam is hoisting an engine form a pickup truck he is fixing. He hands hoist using 3 rafters on ceiling. Measures the angle the hoist makes at the baseto be 85 degrees and the length across the of chain across rafters to be 80 inches. One length of chain hanging down from ...

*January 17, 2017*

**Science**

why does all the information available state that the maximum amount of table salt that can dissolve in water is: 36-39 g/100 ml @ 20 degrees Celsius. i put 35.7 g in 100 ml over a week ago, check it 3 times daily and a lot of it never dissolved. the water remained cloudy and ...

*January 11, 2017*

**statistics**

Scores on the GRE? (Graduate Record? Examination) are normally distributed with a mean of 541 and a standard deviation of 101. Use the 68-95-99.7 Rule to find the percentage of people taking the test who score between 238 and 844 The percentage of people taking the test who ...

*December 8, 2016*

**Math**

How many inches represent 1 mile. Help 3/10 in = 7/8 mile

*December 8, 2016*

**Math**

I have to find the Unit Price of 64 fl oz = $2.00 I have concluded that 2 / 64 is the answer but I think there is an easier way to show it please help

*December 8, 2016*

**Math**

What is the result of converting 1500 yards into miles?

*November 22, 2016*

**Calculus**

Evaluate the definite integral (low) (high) -?/6 ? ?/6 2sec(x)tan(x) dx

*November 16, 2016*

**Calculus**

Find the value(s) of c guaranteed by the Mean Value Theorem for Integrals for the function over the given interval. f(x) = 4?x [4, 9]

*November 15, 2016*

**Calc**

0 = theta

*November 15, 2016*

**Calc**

Find the critical numbers of the functions. f(0) = 2sec0 +tan0 on the interval [0,2pi]

*November 15, 2016*

**Math**

Simplify (Log75+log9+log5)÷(log5+log45)

*November 10, 2016*

**math**

The ratio of two numbers is 3:5, the smallest number is 45 what is the larger number?

*October 18, 2016*

**social studis**

In this lesson, you learned that government officials represent citizens at the state and local levels as well as at the national level.

*October 7, 2016*

**math**

in which stem do most of the data fall 1 ,2 3, or 4

*October 6, 2016*

**Math**

in which system do most of the data fall 1 ,2 3, or 4. plzzzzz help me

*October 6, 2016*

**math**

C 15

*October 6, 2016*

**art**

this piece of art primarily represents art that

*October 6, 2016*

**What is the probability that a randomly**

what grade are you I go to connexus i am in 6th grade

*October 6, 2016*

**PE**

How does esteem affect the way you behave?

*October 4, 2016*

**Physics**

A batted baseball leaves the bat with a velocity of 41.4 m/s at an angle of 51.2°. If the ball just barely clears the 3.05 m (10 ft) center field wall, a. How long was the ball in the air? ___s b. What must the range be from home plate to the center field wall? ___m c. How...

*September 25, 2016*

**Physics**

Physics teacher has this question for hw. 38. An electric powered model car starts from rest and moves in a straight-line for 4.0 s. The relationship between time and position is x^2+ 2 t^2 = 32, t in seconds and x in cm. Find the velocity at t= 1 s & t = 3 s. he gave us the ...

*September 17, 2016*

**Chemistry**

When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 26.4 g of carbon were burned in the presence of 82.1 g of oxygen, 11.7 g of oxygen remained unreacted. What mass of carbon dioxide was produced? Express your answer to one decimal place and ...

*September 14, 2016*

**Educational Technology and Online Learning**

what is the purpose of the introduction in an expository essay

*September 14, 2016*

**Math**

Whats the function rule when inputs 2,3,4,5 and outputs 2,5,8,11?

*September 7, 2016*

**Maths**

Ruby has 20 oranges. she eats 3/5 of the oranges. How many oranges did she eat

*June 6, 2016*

**Maths**

how to solve 150 pupils went to concert.3/4 of the number of boys was equal to 1/7 of the number of girls. how many boys went to the concert?

*May 4, 2016*

**Geometry**

A vertical pole 24ft. high is to be braced securely by four wires attached 8ft. from the top. If the wires are fastened to stakes in the level ground at the vertices of square with its center at the foot of the pole and sides 20ft., what should be the length of each wire?.

*April 30, 2016*

**Chemisty**

Will Cd(OH)2 precipitate if 10.00 g of Cd(NO3)2(s) (MM = 236.42 g/mol) is added to 0.500 L of a 0.800 M NH3 solution?

*April 13, 2016*

**Math**

The large rectangle shown, is composed of five congruent smaller rectangles, each with whole number dimensions. If the perimeter of each smaller rectangle is 20 com, find the are of the entire large rectangle in sq cm.

*March 17, 2016*

**Physic**

A large concave mirror has radius of 6.32m. To magnify an object 1.25m tall by a factor of +2.5 Must the object be placed Will the image appear to be Describe the image 3 things What is the image height

*March 1, 2016*

**Physic**

A large concave mirror has radius of 6.32m. To magnify an object 1.25m tall by a factor of +2.5

*March 1, 2016*

**Chemistry**

Using the equation: 2C2H6 + 7O2--> 4CO2 + 6H20 How many moles of CO2 are produced by the reaction of 21.0 mol O2? Again, not sure how to write it correctly, but if I multiply 7O2 by 3, then I should do the same to the other side of the equation to make it 12CO2?

*February 19, 2016*

**Chemistry**

From the same equation as above, how many moles of CO2 are produced by the reaction of 21.0 mole of O2? 21 moles of O2 means that you would need to multiply 7O2 in the quay ion by 3, so 3 x 4CO2= 12CO2?

*February 18, 2016*

**Chemistry**

Using the equation: 2C2H6 + 7O2--> 4CO2 + 6H20 How may moles of 02 are needed to react with 4.0 mol of C2H6? I think the answer is 14, because if you double the C2H6 to make 4.0 mol, then in the equation you will need to double the O2 to 14. Is this correct?

*February 18, 2016*

**math**

x= -13

*February 17, 2016*

**math**

A number plus itself, plus twice itself, plus 4 times itself, is equal to -104. What is the number?

*February 17, 2016*

**math**

A pair of dice is rolled.What is the probability that the sum of the pips is either an even number on a multiple of 3? total number of space is 36.

*February 4, 2016*

**Math**

An enclosed rectangular garden is 6 meters by 15 meters. Additional fencing within the garden can divide it into three smaller plots, two of them square and one rectangular. What is the least number of meters of additional fencing that is needed?

*January 28, 2016*

**Algebra**

Tell whether the lines for each pair of equations are parallel perpendicular of neither y=-3x+7 -2x+6y=3 Tell whether the lines for each pair of equations are parallel perpendicular of neither y=(-1/5)x=6 -2x+10y=5

*January 18, 2016*

**Algebra (Urgent)**

There should be three answers:) Thanks for your help LadyPhantomhive

*January 18, 2016*

**Algebra (Urgent)**

Which of the following lines are perpendicular to the line y=-1/4x+6 (you may choose more than one answer) 4x-y=2 y=4x 4x+y=6 1/4x-y=6 -4x+y=3

*January 18, 2016*

**Physics**

Three positive point charges are located at the corners of a rectangle. Find the electric field at the fourth corner if q1 = 5 nC, q2 = 6 nC, and q3 = 7 nC. The distances are d1 = 0.6 m and d2 = 0.2 m. (Let the positive x-direction be to the right, and the positive y-direction...

*January 18, 2016*

**Physics**

In the bloodstream, an erythrocyte (red blood cell) of mass m moves with velocity v to the right. Ir collides head-on with a leukocyte (white blood cell) of twice its mass moving to the left with three times its speed. After the collision, the became stuck together. What would...

*December 14, 2015*

**Physics**

A spring with k=1400N/m is firmly anchored to the bottom of a swimming pool. A diver in full SCUBA gear with total mass of 100kg and density of 0.65g/cm3 holds on to the top of the spring. The system reaches a new static equilibrium. After the print is elongated by a length ...

*December 14, 2015*

**Physics**

Imagine a horizontal spring with an elastic constant of 26.5 N/m, held in place just above an air table. If a 2.00 kg mass traveling at 1.50 m/s slams axially into the end of the spring, by how much will it be compressed in bringing the mass to rest?

*November 17, 2015*

**Science**

25.6g

*November 11, 2015*

**Introduction to computers**

You call the help desk to report a problem you are having on your computer. The technician asks you what operation system you are running. You know it is windows 7 but you forgot which version . How can you find out.

*November 10, 2015*

**Introduction to computers**

Which Microsoft operating system started the process of authenticating users with a username and password

*November 10, 2015*

**Introduction to computers**

The command prompt found on Windows 7 and Windows 8 is very similar to the interface of what past operation system.

*November 10, 2015*

**Chemistry**

Is nickel 2 chloride an anion or cation ?? Is sodium chloride an anion or cation ?

*October 25, 2015*

**physics 11**

A swimmer swims perpendicular to the bank of a 20.0 m wide river at a velocity of 1.3 m/s. Suppose the river has a current of 2.7 m/s [W]. (a) How long does it take the swimmer to reach the other shore? (b) How far downstream does the swimmer land from his intended location?

*October 20, 2015*

**math**

From cape to home is 500km I drive from Home at a 100km/h how long will it take in hours

*October 20, 2015*

**Algebra 2**

Solve the following sequence systems algebraic ally x+2y=17 x-y=2

*October 13, 2015*

**Algebra 2**

Create an explicit equation for each recursively defined sequence below a1=17,an+1=an-7

*October 13, 2015*

**Algebra 2**

x-3/x=3/5

*October 13, 2015*

**physics**

While John is traveling along a straight interstate highway, he notices that the mile marker reads 256 km. John travels until he reaches the 144 km marker and then retraces his path to the 173 km marker. What is John’s resultant displacement from the 256 km marker? How ...

*October 13, 2015*

**Algebra 2**

Solve each system 3x-9y=3 and 2x=16-y

*October 11, 2015*

**Algebra 2**

Solve each system 6x-2y=10 and 3x-2=y

*October 11, 2015*

**Algebra 2**

For the function f(x)=square root 3x-2 find the value of the expression below. What value of x makes f(x)=6

*October 11, 2015*

**Social Studies**

These are totally wrong I got 50% 2/4

*October 8, 2015*

**Kitondo boys**

A triangle has vertices X(2,2) ,Y(4,2)and Z(3,4).The triangle is enlarged by a scale factor 2 through the origin.What are the coordinates of the image?

*September 28, 2015*

**Physics**

Basically... distance is 4 km Takes 4 min to go down river Takes 6 min to come up How fast is the river?

*September 22, 2015*

**Statistics/probability**

You are considering two mutual funds for your investment. The possible returns for the funds are dependent on the state of the economy and are given in the accompanying table. State of the Economy Fund A Fund B Good 20% 40% Fair 10% 20% Poor -10% -40% You believe that the ...

*September 13, 2015*

**Physics-Trajectory**

A particle's trajectory is described by x =(12t3−2t2)m and y =(12t2−2t)m, where t is in s. What is the particle's speed at t=0s ? What is the particle's speed at t=5.0s ? Express your answer using two significant figures. What is the particle's ...

*September 11, 2015*

**Physics**

Three forces are exerted on an object placed on a tilted floor. Forces are vectors. The three forces are directed as shown in the figure. If the forces have magnitudes F1 = 2.0 N, F2 = 17.0 N and F3 = 15.0 N, where N is the standard unit of force, what is the component of the ...

*September 11, 2015*

**Physics**

The components of vector A⃗ are Ax = + 3.90 and Ay = -4.00. What is the angle measured counterclockwise from the +x-axis to vector A⃗ ?

*September 11, 2015*

**Physics-VECTORS**

Find the vector's magnitude and direction. Part A A⃗ = 4 i^− 8 j^ A =? θA =?

*September 11, 2015*

**Physics**

A rocket-powered hockey puck moves on a horizontal frictionless table. The figure below shows the graphs of vx and vy, the x- and y-components of the puck’s velocity. The puck starts at the origin. The graph of the X-velocity is v=8t cm/s and the Y-velocity is V=30cm/s ...

*September 11, 2015*

**Chemistry**

a) Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6. At 25 degrees Celcius, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 13.8 g of biphenyl in 32 g of benzene? b) Express...

*August 29, 2015*

**Math**

Interval it exists on: (5-x)y"+3xy'-y=1 y(0)=2

*August 8, 2015*

**english**

How can animated jungle animals, sea creatures, fairies, cars and other non-human characters can be used to represent race?

*August 3, 2015*

**biology**

lymphocyte

*July 9, 2015*

**nutrition**

Which of the following is one of the ways that the endocrine system interacts with the digestive system? a) Eliminates wastes generated in the body b) Transports nutrient to cells c) Controls the passage of food in the blood stream d) Secretes hormones that regulate how much ...

*July 9, 2015*

**nutrition**

Which is the best way to balance your dietary choices? a) If you overeat at lunch, you should skip dinner. b) If you eat two slices of pizza at lunch, you should walk an extra mile after dinner. c) If your dinner has no vegetables, you should eat a cereal containing fiber at ...

*July 9, 2015*

**nutrition**

I say it is D

*July 8, 2015*

**nutrition**

Which is the best way to balance your dietary choices? a) If you overeat at lunch, you should skip dinner. b) If you eat two slices of pizza at lunch, you should walk an extra mile after dinner. c) If your dinner has no vegetables, you should eat a cereal containing fiber at ...

*July 8, 2015*

**nutrition**

Which of the following is one of the ways that the endocrine system interacts with the digestive system? a) Eliminates wastes generated in the body b) Transports nutrient to cells c) Controls the passage of food in the blood stream d) Secretes hormones that regulate how much ...

*July 8, 2015*

**Math**

there is a swimming pool, 3 meters in width and 4 meters in length. the owner wants to built a uniform deck around the swimming pool which is 3 times of the area of the pool. what's the width of the deck?

*June 16, 2015*

**Differentail Equations**

I cant figure out how to do this type of problem! Consider the first order differential equation y′+(x/(x^2−4))y=(e^x)/(x−9) For each of the initial conditions below, determine the largest interval a<x<b on which the existence and uniqueness theorem for...

*June 6, 2015*

**History**

How did the success of the civil rights movement and abolishment of slavery open doors to the election of the first Black American President of the United States, Barack Obama? Can I have some examples?

*June 3, 2015*

**Physics**

A massive steel cable drags a 20kg block across a horizontal, frictionless surface. A 100N force applied to the cable causes the block to reach a speed of 4.2m/s in a distance of 2.1m . What is the mass of the cable?

*May 30, 2015*

**english**

Cuba is one of the few remaining communist countries in the world. Since the collapse of the Soviet Bloc in 1990, however, the country has promoted capitalism in the form of tourism in order to stimulate the economy.

*April 28, 2015*

**pre - CALCULUS**

the solution would be: ( det 8 1 det 2 8 24 3 6 24 _____ ______ det 2 1 2 1 6 3 , 6 3 ) which is (0/0, 0/0) The zero in the denominator indicates that the system can not be solved using cramer's rule and is therefore not consistent and independent. I have not read this but...

*April 11, 2015*

**math**

a swimming pool has an area of 40 square metres and a perimeter of 26 metres what is the length and width of the swimming pool and is it possible for a pool to have the same area but a larger perimeter?

*April 11, 2015*

**geometry**

Given: AC perpendicular BD and AB congruent CB. Prove AD congruent CD. It is a kite figure. I need statements and reasons. Problem states Plan: prove triangle ABE congruent CBE. The use congruent corresponding parts AE and CE to show right triangle AED congruent CED. AD and CD...

*April 10, 2015*

**Math**

Yes because the point where the 2 lines meet to make a angle is the end point of a ray and an angle can go forever.

*April 8, 2015*

**geometry**

if m<1 = 60 degrees, then m<3 + m<5 = what? | \2| 1 \| 3 ------- | ------ 6 |\ 4 |5\ | what is the transitive property of angle congruence?

*April 6, 2015*