Sunday
February 7, 2016

Posts by David

Total # Posts: 1,929

Math
Thank you! I finally understand!
February 6, 2016

Math
Given the equations y=16 and y=3. Determine the slope and y-intercept if any exist. I have determined that the slope is 0 for both equations because it is a horizontal line, but I don't know what the y-intercepts are?
February 6, 2016

Algebra
Given the equations y=16 and y=3. Determine the slope and y-intercept if any exist. I have determined that the slope is 0 for both equations because it is a horizontal line, but I don't know what the y-intercepts are?
February 6, 2016

Economics
The correct answer should be C. Remember, command economies are related to communism where the government controls everything. So, the government controls the economy, all the land, and they decide what job people get.
February 2, 2016

Math
In Super Bowl I, the Green Bay Packers defeated the Kansas City chiefs by a score of 35 to 10. The total points came from 13 different scoring plays, which were a combination of touchdowns, extra point kicks, and field goals, worth 6, 1, and 3 points respectively.The same ...
February 2, 2016

Math
In Super Bowl I, the Green Bay Packers defeated the Kansas City chiefs by a score of 35 to 10. The total points came from 13 different scoring plays, which were a combination of touchdowns, extra point kicks, and field goals, worth 6, 1, and 3 points respectively.The same ...
February 1, 2016

physics2048
A ball is thrown straight up from the ground with an initial velocity of 43.5 m/s; at the same instant, a ball is dropped from the roof of a building 15.4 m high. After how long will the balls be at the same height? The acceleration of gravity is 10 m/s^2 Answer in units of s...
January 30, 2016

math
Alex scores 1\5 of the teams goals in the playoffs. Of those goals, 1/3 of them were scored during a power play. What fraction of the teams playoff goals were scored by Alex on the power play?
January 22, 2016

Math
Suppose you rent apartments in a large apartment complex. Currently there are 90 apartments being rented at a rent of $1300 per month. Evidence shows that for every increase of $25 per month in rent, there will be 1 additional unit unrented. (a) U is the number of units rented...
January 19, 2016

math
a jucket cost £45 in the "15℅ off "sale. how much did it cost before the sale?
January 17, 2016

Math
3/11 eleven up on three.
January 17, 2016

chemistry
1 gm of magnesium is burnt in a closed container which contains 2 l of air at ntp containing 21 percent oxygen by volume find limiting reagent, mass of excess reagent left over, mass of mgo produced, number of mg and oh ion formed by dissolving it with water
January 14, 2016

Math
Thank you so much Reiny! I finally understand it!
January 13, 2016

Math
(2+3i)^6 Using Demoirves Theorem. I tried solving it out, but somehow it didn't work for me. (2+3i)^6 r=|z|=square root of 2^2 + 3^2 = square root of 13 z = square root of 13 * (cos____ + isin_______ ) At this point I am stuck, so can someone help me?
January 13, 2016

physicss
Pls be mathematical
January 10, 2016

physicss
Two point charges experience an attractive force of 5N when they are separated by 1m.what force do they experience when their separation is 2m? What is the value of the charges Using coluomb's law F=KQ1Q2/r^2 5=8.99*10^9*Q1*Q2/1
January 10, 2016

university
As=total distance covered/time taken
January 10, 2016

Physics
A long thin rod lies along the x-axis from the origin to x=L, with L= 0.750 m. The mass per unit length, λ (in kg/m) varies according to the equation λ = λ0 (1+1.410x3). The value of λ0 is 0.600 kg/m and x is in meters. 1) Calculate the total mass of the ...
January 9, 2016

Science
Ice at 0 degree celcuis is added to 200g of water initially at 70 degree celcuis in a vacuum flask.When 50g of ice has been added and has all melted the temperature of the flask and contents is 40 degree celcuis.When a further 80g of ice has been added and has all melted the ...
January 8, 2016

Math
Wrong, the answer is C.
January 5, 2016

Math
answer is A
January 5, 2016

Math
2x+1=4x-5 2x=6 x=3 y=2x+1 7=2(3)+1 7=7 The answer would be D.
January 5, 2016

MATH help ty
2x+1=4x-5 2x=6 x=3 y=2x+1 7=2(3)+1 7=7 The answer would be D.
January 5, 2016

Math (Help) thx!
D. No Solution Through the use of elimination the positive and negative 7x would cancel each other out and the positive and negative 15y would also cancel out. You are then left with 0 value so there would be no solution.
January 5, 2016

Trigonomentry help plz thanks
Really, that is inappropriate. I am sorry Collins that I can't help you with this question. I am currently in Pre-Calc so I haven't learned this topic in great detail yet.
January 4, 2016

science
Thank you!
January 4, 2016

science
I am wondering why H2S has only London Dispersion forces and not Hydrogen Bonding?
January 4, 2016

grammer
The sentence structure seems to be a bit weird. The part "also fattens" makes no sense and it doesn't seem like it would belong in this particular sentence. Could you rephrase it? Is this a homework problem?
January 4, 2016

grammer
Is that another question or is it a statement?
January 4, 2016

grammer
I think the correct option would be number 4. "Finishing quickly is not as important as answering all question correctly". Using this word in the sentence would make the most sense. I also recognized an error: the word question should be plural. So, "Finishing ...
January 4, 2016

chemistry
I am wondering why H2S has only London Dispersion forces and not Hydrogen Bonding?
January 4, 2016

Math -Algebra
Is it one unit down or 5 units down?
January 4, 2016

math
Thank you so much! I get it now!!!
January 4, 2016

math
Evaluate tan (inverse cosine of 2/3). a. square root of 5 divided by 2 b. square root of 5 divided by 3 c. square root of 5 divided by 5 I have a feeling that the answer would be a but what i am confused about is how do we figure out what the value is for inverse cosine of 2/3.
January 4, 2016

Math
Solve the system using substitution: x = y - 6 y = 6 - 3x Answer choices: (0,6) (6,0) (0,-6) (-6,0) (
January 3, 2016

Math
How many triangles exist when the measure of angle B is 100 degrees, a =10 and b=5? a. none b. 1 triangle c. 2 triangles I have already solved this and I have found that there will be no triangle because by using the law of sines I found that the value is bigger than 1. So, I ...
December 27, 2015

sri sri ravishankar
What is the ratio of cups of cereal to cups of chocolate chips? What type of ratio is this?
December 18, 2015

Math Help!
The radius of this circle is one unit. Find the exact lengths of the legs in the right triangle if: Sides a is twice as long as side b. And Sides b is twice as long as side a. Basically the hypotenuse of this triangle is 1 and we are trying to use the pythagorean theorem to ...
December 12, 2015

algedra
y=6x+5 and y=6x-7 These to lines are parallel because they have the same slope. y=6 and y=-8 doesn't even have a slope so they are not related. If it was y=6x+5 and y=-1/6x-7, then the two equations would be perpendicular because they are opposite reciprocals.
December 12, 2015

chemistry
I forgot to tell you that this answer is true. Trust me, I'm in AP chemistry right now.
December 12, 2015

chemistry
this is simple. do 12.04 * 10^23 molecules of oxygen multiplied by 1 mole divided by 6.02 * 10^23 molecules of oxygen 12.04 * 10^23 molec. of Oxygen * (1 mol / 6.02 * 10^23 molec. ) = 2 moles of oxygen
December 12, 2015

Math Help Please
The radius of this circle is one unit. Find the exact lengths of the legs in the right triangle if: Sides a is twice as long as side b. And Sides b is twice as long as side a. Basically the hypotenuse of this triangle is 1 and we are trying to use the pythagorean theorem to ...
December 12, 2015

Math Help
you can make a right triangle with the radius. Basically the hypotenuse of this triangle is 1 and we are trying to use the pythagorean theorem to find the lengths of side a and b according to the terms described above.
December 12, 2015

Math Help
The radius of this circle is one unit. Find the exact lengths of the legs in the right triangle if: Sides a is twice as long as side b. And Sides b is twice as long as side a.
December 12, 2015

Math
The radius of this circle is one unit. Find the exact lengths of the legs in the right triangle if: Sides a is twice as long as side b. And Sides b is twice as long as side a.
December 12, 2015

Math
Michael has $50 to spend at the fair .the admission is $10 and each ride is $3.00 ,write an inequality that expresses the number of rides that Michael can ride
December 12, 2015

Math
Diego's deposit $100 and saves $10 per month .write an equation that represent the total amount in his account for x months
December 12, 2015

PHYSICS
I get V'2 = 1.09 m/s and V'1 = 1.99 m/s Does anyone else concur?
December 11, 2015

PHYSICS
A marble with a mass of 0.5 kg is moving to the right at 1.25 m/s and a second marble with a mass of 0.35 kg is moving to the left at 2.15 m/s. If they collide head on and the collision is elastic find the final velocities of the two marbles
December 11, 2015

pharmacy procedures
how many grams of hydrocortisone are present in 40g of a 2.5 percent hydrocortisone ointment
December 10, 2015

Opinion Question
Give me some ideas please. How technology reveals something deeper and essential about human nature: either our strengths or limitations, or both.
December 4, 2015

chem
How many grams of Na2SO4 are present in 500. mL of a 0.750 M aqueous solution? a.70.9 g b.53.3 g c.0.284 g d.106 g e.2.63 g A serum concentration of Mg2+ of 1.75 mmol/L is equivalent to: a.3.50 mEq/L b.1.75 mEq/L c.17.5 mEq/L d.0.875 mEq/L
November 17, 2015

chem
7.76 g of KBr was dissolved in water. The solution was diluted to a volume of exactly 250 mL. What is the molarity of the solution? 32.2 M a.0.476 M b.0.0652 M c.0.0310 M d.0.261 M
November 17, 2015

chem
A solution is prepared by adding 25.0 g of methanol to water to make a total volume of solution of 95.4 mL. What is the weight/volume percent of this solution? a.26.2% b.3.81% c.20.8% d.25.0%
November 17, 2015

chem
At STP a sample of methane gas occupies a volume of 1250 mL. What is the volume of the methane at 100.°C and 760. torr? a.1710 mL b.1250 mL c.915 mL d.1420 mL
November 17, 2015

chem
I am filing out a study guide and needed coaching on some question. thank you 0.765 g of He is placed in a balloon at 1.15 atm. The balloon expands to volume of 5.00 L. What is the temperature of the balloon? a,3.45 K b,91.6 K c,93.4 K d,366 K
November 17, 2015

Calc
A manufacture has been selling 1150 television sets a week at $510 each. A market survey indicates that for each $13 rebate offered to a buyer, the number of sets sold will increase by 130 per week. a) Find the function representing the demand p(x), where x is the number of ...
November 16, 2015

Calc
An open box is to be made out of a 10-inch by 16-inch piece of cardboard by cutting out squares of equal size from the four corners and bending up the sides. Find the dimensions of the resulting box that has the largest volume. Dimensions of the bottom of the box:
November 16, 2015

Calc
Thank you
November 16, 2015

Calc
A stone dropped into a still pond sends out a circular ripple whose radius increases at a constant rate of 2.6 ft/s. (a) How rapidly is the area enclosed by the ripple increasing when the radius is 4 feet? The area is increasing at
November 16, 2015

Math
The top and bottom margins of a poster are 6 cm and the side margins are each 7 cm. If the area of printed material on the poster is fixed at 384 square centimeters, find the dimensions of the poster with the smallest area.
November 16, 2015

Math
A set costs half as much as a book.A book costs 600$ more than a pen.If the total cost of the three items is 6900$,find the cost of a set.
November 16, 2015

maths
there were 32 boys and 13 girls in a school football team they wanted to play 5 a-side football how many teams can they make?
November 11, 2015

Physics
I am not about to get Vyellow or Vred by itself to solve
November 10, 2015

Physics
Two cars collide as shown in the figure. The yellow car is initially heading east and has a mass of 1000 kg. The red truck is initially heading north and has a mass of 2000 kg. The two vehicles collide, stick together, and veer off at a velocity of 16 m/s at a direction of 24 ...
November 10, 2015

Physics
Thank you so much
November 10, 2015

Physics
A sprinter accelerates at the start of the race at 8.5 m/s^2. After 1.3 seconds the sprinter runs the rest of the 100m race at a constant velocity. What was the sprinter's time at the finish line?
November 3, 2015

Biology Answer Check
In pea plants, the allele for tall (T) is dominant to the allele for short (t). Which of the following is the percent of offspring that will be tall if a heter In pea plants, the allele for tall (T) is dominant to the allele for short (t). Which of the following is the percent...
October 25, 2015

answer check
In pea plants, the allele for tall (T) is dominant to the allele for short (t). Which of the following is the percent of offspring that will be tall if a heter In pea plants, the allele for tall (T) is dominant to the allele for short (t). Which of the following is the percent...
October 25, 2015

microbiology
In pea plants, the allele for tall (T) is dominant to the allele for short (t). Which of the following is the percent of offspring that will be tall if a heter In pea plants, the allele for tall (T) is dominant to the allele for short (t). Which of the following is the percent...
October 25, 2015

geometry
How can I turn 192cubic cm into a triangular prism?
October 25, 2015

Math
A rock is thrown upward from a bridge that is 88 feet above a road. The rock reaches its maximum height above the road 0.67 seconds after it is thrown and contacts the road 3.18 seconds after it was thrown. Define a quadratic function, f, that gives the height of the rock ...
October 23, 2015

MaTH
5+r/14 3x-4=23 4
October 23, 2015

HELP AZAP
-5*x=-35 divide both sides by -5 x=7
October 23, 2015

History
Does anyone know what impact has gothic architecture had on modern architecture?
October 17, 2015

Physics
In a glancing collision between two identical steel spheres, which of the following statements are correct? (Assume this collision is perfectly elastic. Select all that apply.) a) The velocities of the spheres after the collision in the direction perpendicular to the incoming ...
October 15, 2015

Physics
A steel ball rolls off a flat table of height 1.05 m with a velocity of 1.90 m/s a) How long will it take the ball after leaving contact with the table to hit the ground? b) How far from the edge of the table will the ball hit the floor?
October 15, 2015

History
Need help with study guide!! 1. What are two inventions/concepts that Eli Whitney is known for? 2. Why did New England become the center of the American Industrial Revolution? 3. What was a key element in developing a market economy in nineteenth century America? 4. What was ...
October 15, 2015

Math
Building A is 190 feet shorter than Building B. The total height of the two buildings is 1520 feet. Find the height of each building.
October 14, 2015

Math
well you will have 20 dimes and 16 quarters.
October 13, 2015

Math
Consider the equation f(x)= -2 sqrt(X+3). List in order the transformations applied to the parent function.
October 9, 2015

MATH HELP PLEASE
Find the restricted values of x for the following rational expression. x^2 + x + 6/8x^2 − 8x
October 7, 2015

Algebra
y=2-x
October 6, 2015

Math
Find the restricted values of x for the following rational expression. x^2 + x + 6/8x^2 − 8x
October 6, 2015

Physics
In a repair shop a truck engine that has mass 429 kg is held in place by four light cables (Figure 1) . Cable A is horizontal, cables B and D are vertical, and cable C makes an angle of 37.1∘ with a vertical wall. Tension in cable A is 729 N . a.What is the tension in ...
October 2, 2015

school for wildlife conservation
what is the meaning of global warming
October 2, 2015

Physics
A road heading due east passes over a small hill. You drive a car of mass m at constant speed v over the top of the hill, where the shape of the roadway is well approximated as an arc of a circle with radius R. Sensors have been placed on the road surface there to measure the ...
October 1, 2015

Math
Four thousand students at a school were asked to name their favorite pizza topping. The results were 800 Pepperoni, 1,000 Sausage, 1,200 Mushrooms, 560 Peppers, 240 Onions, and 200 Other. Your friend expresses these results in this circle graph. Your friend made a mistake, ...
September 14, 2015

intermediat Algebra
Rachel runs 7 miles in 80 minutes. At the same rate, how many miles would she run in 64 minutes?
September 7, 2015

math(elmntry euclidean geometry)
The sum of the angles of a quadrilateral is 360°. Find the conditional, draw a diagram, and state the given and conclusion. CONDITIONAL FORM: If it is the sum of the angles of a quadrilateral, then it measures 360°. DIAGRAM: Not shown, but pictures a trapezoid with ...
September 6, 2015

ALgebra
what is the maximum speed a car could be traveling in order to stop within 40ft? d=0.05V^2+1.20V
September 4, 2015

Science
Scientific methodology is what distinguishes science from other disciplines. Explain
September 3, 2015

statistics
a golf ball is selected at random from a golf bag. If the golf bag contains 4 brown balls, 9 yellow balls, and 12 orange balls, find the probability of the following event. probability the ball is brown or yellow?
August 25, 2015

Math
simplify the expression (4 square root of x)/(6-square root of x) I need help with this. I've worked it out to the point where i got (2 square root of x)/(3-square root of x), but I'm pretty sure that it can be simplified further. If what I'm thinking is right you ...
August 25, 2015

Math
simplify the expression (4 square root of x)/(6-square root of x) I need help with this. I've worked it out to the point where i got (2 square root of x)/(3-square root of x), but I'm pretty sure that it can be simplified further. If what I'm thinking is right you ...
August 25, 2015

sensitive probability plz help
Lol what a joke of a teacher
August 14, 2015

Physic
A bullet of mass 0.05kg has a speed of 400cm|s. What is its kinectic energy? It hits a wall of which the average resistive force is 1000N, Cal.the distance penestrated by the bullet
August 10, 2015

Maths
Five-eights of the population of a village are men, one-sixth are children and the rest, 500 in number are women. How many children are there?
August 7, 2015

billing and coding
which of the following will you place below the returned address of a business envolope
July 16, 2015

Math
A boy throws a ball with a horizontal speed of 2.5 m/s at a height of 0.8 m above the ground. The Coefficient Of Restitution between ball and ground is 80%. • Calculate the x− and y−components of the ball’s velocity, immediately after its first bounce. ...
July 12, 2015

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