# Posts by ED

Total # Posts: 287

math 7/8 grd
d+s ? -3 d ? -7 find s it says the answer is 4 (s=4) but it seems not ok because depending on d the number can be pretty much anything

math 7/8 grd
I left spaces but did not show, sorry.. d+s ? -3 d?-7 find s

math 7/8 grd
d+s ? -3 d?-7 find s the answer supposed to be 4, but I think it is not correct, because depending on d it might be pretty much anything.. any thoughts?

wile catching fireflies, you and your friend decide to have a competition. after m minutes, you have (3m +13) fireflies and your friend has (4m+6) fireflies. a. how many fireflies are caught per minute? b. ow many fireflies caught before the competition? for a. we tried (3m+13...

Math 2
Rui is a professional deep water free diver. His altitude (in meters relative to sea level), xxx seconds after diving, is modeled by: d(x)=1/2x^2 -10x What is the lowest altitude Rui will reach? I actually don't understand this problem if its asking for like the vertex or ...

Math 2
Thanks Scott!

Math 2
Graph g(x)=?6(x?2)(x) Ok so I don't know how to do this because it isent two binomials but if you can help me this is what I got Vertex:1,6 X-intercpts: x=2 Is that right if not explain it to me please!

Math 2
The rectangle below has an area of 30k^3+6k^2 The width of the rectangle (in meters) is equal to the greatest common monomial factor of 30k^3 and 6k^2 What is the width and length of the rectangle? Width:6k^2 Length: I couldn't find the length I need to be explained of how...

Math
Thx Steve. Are there any handheld graphic calculators (eg TI-84 Plus CE) that can graph this?

Math
How can I graph this equation: (x-squared + y-squared - 1)cubed = x-squared times y-cubed ? Is there a polar form of the equation?

algebra
Miranda worked two part-time jobs last week. The first job paid \$8 an hour, and the second job paid \$11 an hour. She worked a total of 23 hours last week and earned \$208. How many hours did Miranda work at the first job?

math
Time Height (Weeks) (CM) 1 1 2 4 3 6 4 9 5 11 ~Ok i have this problem and its a correlation coefficient, There is a lot of questions but how would you find if its linear or exponential.

algebra
Delaney needs to rent a car while on vacation. The rental company charges \$17.95, plus 16 cents for each mile driven. If Delaney only has \$50 to spend on the car rental, what is the maximum number of miles she can drive?

Chemistry
Identify the chemical reactants in ZnCl2(aq)+H2(g)?

Algebra
manuella likes pepperoni, mushroom, and extra cheese on her pizza. how many different pizzas can she order with one, two, or all three of these toppings?

Maths
A ball is thrown vertically upwards at 3 m s-1 from 1m above ground level (I) write down the equation for the height of the ball above the ground after t seconds (while the ball is in the air). (II) use your answer to find the time it takes the ball to reach the ground. (iii) ...

Maths
a circus artist drops a ball from a high wire. The ball takes 1.5 seconds to reach the ground. (i) Find the height of the high wire above the ground (ii) write an expression for the speed of the ball t seconds after it's dropped where 0<t<1.5 (iii) how fast is the ...

math
the gas tank in jocko's car hold 12 gallons when it's full. the car gets 18 mi/ gal. How far can he travel on two full tanks

Physics
The sun is 30 ∘ above the horizon. It makes a 54 m -long shadow of a tall tree.

math age problem
I am 10 less than four times my age six years ago how old am I now

Calculus
Solve the following equation on the interval [0,2pi) if sin = -0.29?

Calculate y' and y'' at the point (1,1)
Calculate y' and y'' at the point (1,1) on the curve 5 xy^2+9 y-14 = 0 I got the first part (-5/19) but I can't get the answer for the second

Math
Calculate y' and y'' at the point (1,1) on the curve 5 xy^2+9 y-14 = 0 I got the first part (-5/19) but I can't get the answer for the second

algebra
2(2)+4y-6=0 4+4y-6=0 4y-2=0 4y=2 y=1/2

physical science
you are riding in a car traveling at 60mi/hr in a 50 mi/hr zone. you spot a policeman 10 feet ahead. you slow down with an acceleration of -2ft/sec2 for 3 seconds. Do you get a ticket

Chemistry
The gas phase reaction X+Y⇄ Z is first order in Y and second order in X. If the concentration of X is double and concentration of Y is tripled. The reaction rate would be increase by a factor of: then, Rate= k [x]^2[y] --> k[x]^4[y}^3 is this the correct line of ...

Chemistry
Methyl amine is a weak base with a pKb=3.35. Consider the titration of 30.0mL of .030M of Methyl amine with 0.025M HCl. a) Write the appropriate equation for the reaction. b) Calculate K for the reaction in part (a). c) Calculate pH of the initial methyl amine solution (0mL ...

University physics
"Consider a long charged straight wire that lies fixed and a particle of charge +2e and mass 6.70×10-27 kg. When the particle is at a distance 1.61 cm from the wire it has a speed 2.70×105 m/s, going away from the wire. When it is at a new distance of 2.71 cm...

University physics
"A droplet of oil carries an extra charge of one electron and is held motionless between parallel plates separated by 1.80 cm across which there is a potential difference of 55.5 kV. What is the mass of the droplet?" I assumed that this whole thing was actually a ...

Definition
Ahem, did you look at the time on both?

Definition
Is it A?

Definition
In which sentence is the word SPUTTERS used correctly? a.The engine SPUTTERS when it is started in the cold. b.The ball SPUTTERS as it bounces across the court. c.That tree SPUTTERS when it drops its leaves. d.The wave SPUTTERS as it breaks over the beach ***

Algebra 2
Mario took a 17 day trip around the U.S. He visited Boston, Miami, Philadelphia and New York. In Boston he spent \$200 per day, in Miami \$225 per day, in Philadelphia \$175 per day and in New York he spent \$150 a day for a total of \$3400. The number of days he spent in Miami was...

Math
p=3q q = r-110 r = p-130 q = p-130-110 q = 3q-240 240+q = 3q 240 = 2q 120 = q

math
x+4x =60 x boys 4x girls 5x=60 x=12 12 boys, 48 girls

World history
What was the biggest change? Where? Why? Japan China Europe Africa

there are 4 possible scoring plays in an NFL football game (T) touch down -6 points (A) point after touchdown can only be earn with a touch down) - 1 point (F) field goal - 3 points (S) safety - 2 points 1. how many different ways could the team score 11 points? I think it is ...

World history
What development produced the greatest instability? Where? Why? Japan China Africa Europe

World history
Thank you

World history
Who benefited the least from the development of feudal systems? Explain why Japan China Africa Europe

World history
Who benefitted the least from the development of feudal system? Explain why Japan China Africa Europe

Electrical theory
a series RL circuit contains two resistors and two inductors. the resistors are 33 ohms and 47 ohms. inductors have inductive reactances of 60 ohms and 30 ohms. the applied voltage is 120 volts. what is the voltage drop on the 33 ohm resistor?

math
A brownie cake recipe requires 2 1/2 cup of sugar. The amount of flour needed is 1/2 cup more than twice the amount of sugar. How much flour is required?

Math
Twice the square of a positive number increased by three times the number is 14. Find the number.

Math
It's 2 M :)))))))))))

Math
Thanks :)

Math
5408.6538

Physic
0.00043

math
80 boys used 60 loaves in 12 days. 120 boys needs loaves for 18 days. How many loaves will be needed?

math
A mass on the end of a spring which is hanging vertically is raised up and let go. It then oscillates between 2m and 1.5m above the floor and completes 32 cycles in one minute. The height, h metres, of the mass above the floor after t seconds can be modelled by the function h...

word problem
suppose a car rental charges 94 dollars for the first day and 44 dollars for each additional or partial day.let S(x) represent the cost of renting a car for x days .find the value of S(5.5)

Can some one check my finance answers please
Which of the following best states the difference between seed capital and startup capital? Seed capital is for research and planning while startup capital is for operating expenses. Seed capital is provided by venture capitalists while startup capital is provided by banks. ...

Finance
Which of the following best states the difference between seed capital and startup capital? Seed capital is for research and planning while startup capital is for operating expenses. Seed capital is provided by venture capitalists while startup capital is provided by banks. ...

Physic
Work is done when.

AP Calculus BC
Blah

Math
Thank you!

Math
yes, \$450

Math
Jason is a salesperson in the electronics department store. He is 38% short of his goal for the week. His goal is to earn %450. For each CD player he sells, he earns \$57. How many CD players does he need to sell in order to meet his goal?

physics
A truck driver slams on the brakes and the momentum of the truck changes from ‹ 53000, 0, 0 › kg · m/s to ‹ 27000, 0, 0 › kg · m/s in 3.3 seconds due to a constant force of the road on the wheels of car. As a vector, write the net force ...

math
a dog starts chasing a cat when they are 12 meters. for every 7 meters that the dog runs, the cat runs 4 meters. how far does the dog have to run to catch up with the cat?

Economics
increase the money supply and encourage economic growth.

economics
What would be the present value of an item that has a salvage value of \$25,000 at the end of four years? Assume a discount rate of 3.8% for an end-of-year factor. Carry calculations to four decimal places. \$25,950 \$24,085 \$20,747 \$21,535

statistics
A researcher is testing the effect of a new cold and flu medication on mental alertness. A sample of n=9 college students is obtained and each student is given the normal dose of the medicine. Thirty minutes later, each students performance is measured on a video game that ...

College Math
In a group of 200 high school students, 36 are taking biology, 52 are taking Spanish, and 126 are taking neither biology nor Spanish. If one of these 200 students is to be chosen at random, what is the probability that the student chosen is taking biology but not Spanish?

Pre-Algebra
You have \$60 in your wallet and want to buy some new CDs. If the CDs are \$11 each, what number of CDs, x, can you buy? Write and solve an inequality. Then explain your answer.

Math ~CHECK MY WORK~
oh ok...... wow thnx

basic electronics
What would happen if the two pith balls shown in Figure A-1 were held together for a few moments, then released? A. The charge would leak off and the pith balls would hang straight down. B. The pith balls would each receive a negative charge and they would move apart. C. The ...

programming
#include <iostream.h> #include <conio.h> void main() { clrscr(); int x = 10; int y = 2; int sum, difference, product, quotient; sum = x + y; difference = x - y; product = x * y; quotient = x / y; cout << "The sum of " << x << " & &...

math
Kristy read 40 pages of a book on Saturday. She read Test Image as many pages on Sunday. Which numerical expression could be used to calculate the number of pages Kristy read on Sunday?

physics
The maximum gauge pressure in a hydraulic lift is 18 atm. What is the largest size vehicle (kg) it can lift if the diameter of the output line is 22 cm?

Physics
6.37

Draw a representation of the resulting equilibrium mixture when ammonia is added to water. The equilibrium constant,K, is a small number for this reaction so represent that in your drawing.

Microtomy
I need to infiltrate a sample block of wood for sectioning on a microtome. The formula for the infiltrating media is 70% Ethylene Glycol 1500 and 30% Lauric acid. Both components are in a powder form. The instructions don't indicate whether this is supposed to be a weight/...

math
a musical triangle has a perimeter of 180 mm. the side of middle length is 2 times as long as the shortest side. the longest side is 3 times as long as the middle side. how long is each side

math
I am not all those people

math
I am supposed to find the area of a segment of a circle. The circle is cut with two radi with an angle of 90 degrees. Then where the radi touch the circle another line is drawn to connect them. The triangle and the small section between the triangle and the edge of the circle ...

Physics
A car with engine trouble slides 85 meters up along a 14 degree ramp before coming to a stop. If the coefficient of friction between the tires and the road is 0.9, what was the velocity of the car at the bottom of the ramp? I'm not looking for a solution which includes ...

Physics101
1. 20.0

Physical Science
Predict how each of the following changes will affect the following reaction involving gaseous reactants and products: 2NO2 = N2O4 + heat a. the temperature is increased. b. the pressure is increase. c. N2O4 is removed from the equilibrium mixtur. d. NO2 is added to the ...

Physical Science
Predict the shift of equilibrium for each of the following conditions in the following reaction involving gaseous reactants and products: N2 + 3H2 = 2NH3 + heat A. the pressure is increased. b. the temperature is decreased.

Physical Science
Predict the shift of equilibrium for each of the following conditions in the following reaction involving gaseous reactants and products: N2 + 3H2 = 2NH3 + heat

math
a frame with a 19"permitter and 2"wide what is the length of this frame and what is the area.

math
a frame with a 19"permitter and 2"wide what is the length of this frame and what is the area.

programming
#include <iostream.h> #include <conio.h> void main() { clrscr(); int x = 10; int y = 2; int sum, difference, product, quotient; sum = x + y; difference = x - y; product = x * y; quotient = x / y; cout << "The sum of " << x << " & &...

A agrees to buy such fruits and vegetables as it "might desire" from B. Does this promise to buy obligate B in anyway?

Physics
Ted Williams hits a baseball with an initial velocity of 120 miles per hour (176 ft/s) at an angle of θ = 35 degrees to the horizontal. The ball is struck 3 feet above home plate. You watch as the ball goes over the outfield wall 420 feet away and lands in the bleachers...

math
A random group of seniors was selected from a university and asked about their plans for the following year. The school advising office claims that 60% of the students plan to work, 30% of the students plan to continue in school, and 10% of the students plan to take some time ...

math
A right-tailed test is used when .

math
Are the following statements and valid null and alternative hypotheses? (

Math/statistics
Are the following statements and valid null and alternative hypotheses? (

math
If two dice are rolled one time, find the probability of getting a sum less than 5.

math
Construct a frequency polygon distribution using the class limits shown below. 80, 99, 77, 67, 93, 70, 76, 86, 79, 71

physics
Initially, a particle is moving at 5.30 m/s at an angle of 35.0° above the horizontal (+x axis). Two seconds later, its velocity is 5.97 m/s at an angle of 50.0° below the horizontal. What was the particle's average acceleration during this time interval? ________m...

direct an inverse variation
Since the number of books checked out varies directly with the number of book reports assigned we have the following relationship: Let B be the number of books checked out and R be the number of reports due. Then because R and B vary directly there is a constant K so that B = ...

statistics
The following is the tabulated data of the monthly commissions of the sales employees at La Verne Inc. Establish the frequency distribution. Present the data in a histogram format, draw the frequency polygon and the ogive (or cumulative polygon)

statistics
The following is the tabulated data of the monthly commissions of the sales employees at La Verne Inc. Establish the frequency distribution. Present the data in a histogram format, draw the frequency polygon and the ogive (or cumulative polygon)

math
16

math
15 ft

math
how fast are 13 inch trailer tires going when my truck is going 55mph with 15" tires

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