Wednesday
October 22, 2014

Posts by help please


Total # Posts: 217

another math equation
do i multiply 4, 5 , and 3? and 2?
October 11, 2014

another math equation
I don't know what to multiply
October 11, 2014

another math equation
PLEASE HELP!!!
October 11, 2014

another math equation
a b 2 - =- =-, find ab 4 5 3 i'm gonna need supporting onthis
October 11, 2014

math equation
PLEASE HELP! IT'S DUE IN A LITTLE WHILE!
October 11, 2014

math equation
a b - = - = 3, Find a + b 4 5
October 11, 2014

Conversion again (3 question finish-up)
Mr.Bob, Ms.Sue, can you change it to a common fraction though?
October 10, 2014

Conversion again (3 question finish-up)
Hello, Ms.Sue helped me with the last question, but I did not get it. I have 3 questions and I would like to solve it step by step to the answer. Can you help me? 1. ) .85 meters/minute = _____ kilometers/second 2.) 80 ft/s = ____ mile/hour 3.) 12 meters/hour = _____ ...
October 10, 2014

math
I'm sorry: It'S 4.25 + 4.58(3)
October 10, 2014

math
4.25 : .58(3) _______________ Try this
October 10, 2014

Conversion
I simplified the whole thing when I converted it to a fraction. I got 57/500 but it didn't work. .114 = 57/500 right? I didn't get it right though.
October 10, 2014

Conversion
10 ft/min ____ mi/hour
October 10, 2014

algebra
I was thinking the second one too, and yes I think i'll ask my teacher about it. Thanks for your help :) Can you help with this? Write two integers with different signs that have the sum of -25
October 6, 2014

algebra
i have no idea, that is what i was confused about.
October 6, 2014

algebra
evaluate the expression when a = 4 b = -5 and c = -8 -b + c =
October 6, 2014

ALGEBRA
The table below shows two equations: Equation 1 |3x - 1| + 7 = 2 Equation 2 |2x + 1| + 4 = 3 Which statement is true about the solution to the two equations? Equation 1 and equation 2 have no solutions. Equation 1 has no solution and equation 2 has solutions x = 0, 1. The ...
October 5, 2014

english
has anyone read of beetles and angels
October 5, 2014

ordering decimals from least to greatest
also -1.45... is a repeating decimal
September 26, 2014

ordering decimals from least to greatest
from the least value to the greatest value
September 26, 2014

ordering decimals from least to greatest
what is the order of these decimals from least to greatest? -1.4 -1.45 -1.45... -1.455
September 26, 2014

SCIENCE
If we decrease the distance an object moves we will decrease the amount of force applied. Decrease the amount of work done. increase the amount of force applied. increase the amount of work done.
September 23, 2014

Math
Brian gave 20% of his baseball cards to Scott and 15% to Adam. If he still had 520 cards, how many did he have originally?
July 30, 2014

Math terminal zeroes
Scratch that. Never mind.
July 25, 2014

Math terminal zeroes
If a number ends in zeroes, the zeroes are called terminal zeroes. For example, 520,000 has four terminal zeroes, but 502,000 has just 3. Let X equal the product of all natural numbers from 1 to 20. N = 1 * 2 * 3... *20. How many terminal zeroes will N have when it is written ...
July 25, 2014

Physics
A 69.5kg football player is gliding across very smooth ice at 2.15m/s . He throws a 0.470kg football straight forward. A) What is the player's speed afterward if the ball is thrown at 16.0m/s relative to the ground? B) What is the player's speed afterward if the ball ...
May 27, 2014

math
what would the graph of y=x^2+1 look like A. a straight line B. a parabola C. a dotted line D. none of the above
May 26, 2014

science
Which of the following is the most effective way to preserve biodiversity? (1 point) captive breeding habitat destruction habitat preservation habitat fragmentation
May 15, 2014

math
CD sales at corner music increased 145% last year. which number is equivalent to 145%? A. 14,500 B. 145 C. 1.45 D. O.O145 i think C but im not sure
May 14, 2014

english
if you read the giver can you please check my answers and see if they are correct? . What is the jonas apprehensive about at the beginning of the novel? A. a plane flying over the community B. a dream that he had recently C. the upcoming ceremony and his assingment I think C 2...
May 13, 2014

english
Jane Goodall, a primatologist, studies the social and family lives of chimpanzees.
May 13, 2014

LA
1. What is the jonas apprehensive about at the beginning of the novel? A. a plane flying over the community B. a dream that he had recently C. the upcoming ceremony and his assingment I think C 2. In Jonas's community, members are released from the community under which ...
May 13, 2014

LA
Can you check my answers?
May 13, 2014

LA
has anyone read the giver?
May 13, 2014

history
1 C and 2 D?
May 12, 2014

history
1. Which factor contributed most to the beginning of the women's rights movement in the United States during the mid-1800s? A. A dramatic increase in women's participation in the workforce *** B. A shift in social attitudes brought on by increased sectional tensions C...
May 12, 2014

science
the current atomic model would be revised if A. better microscopes were being used to study its structure. B.better microscopes are invented in the future. C. new information about an atom's structure is discovered. D. a new element is discovered in the future
May 8, 2014

math
simplify 10p4 A. 210 B. 360 C. 5,040 D. 151,200 simplify 9c4 A. 126 B. 15,120 C. 5 D. 3,024
May 7, 2014

math
a basket contains the following pieces of fruit: 3 apples, 2 oranges, 2 bananas, 2 pears, and 5 peaches. Jameson picks a fruit at random and does not replace it. Then Brittany pricks a fruit at random. What is the probability that Jameson gets a banana and Brittany gets a pear...
May 7, 2014

math
each of two urns contains green balls and red balls. urn I contains 8 green balls and 12 red balls. Urn II contains 5 green balls and 8 red balls. if a ball is drawn from each urn, what is P(red and red)? A. 79/65 B. 24/65 C. 20/33 D. 2/13
May 7, 2014

math
i meant red
May 7, 2014

math
a bag contains 7 green marbles, 9 red marbles, 10 orange marbles, 5 brown marbles, and 10 blue marbles. you choose a marble, replace it, and choose again. what is P(read, then blue)? A. 77/164 B. 19/41 C. 90/1681 D. 45/41
May 7, 2014

math
Food Express is running a special promotion in which customers can win a free gallon of milk with their food purchase if there is a star on their receipt. So far, 129 of the first 138 customers have not received a star on their receipts. What is the experimental probability of...
May 7, 2014

math
thank you!!
May 7, 2014

math
a number cube is rolled 150 times. the number 3 comes up 43 times. hat is the experimental probability of rolling a 3? what is the theoretical probability of rolling a 3? A. 43/150 ; 1/6 B. 43/150 ; 1/50 C. 1/6 ; 43/150 D. 3/43 ; 1/6
May 7, 2014

chemistry
The generic metal A forms an insoluble salt ABsolid and a complex AC5aqueous. The equilibrium concentrations in a solution of AC5 were found to be A is 0.100 M, C is 0.0320 M, and AC5 is 0.100 M. Determine the formation constant Kf of AC5
May 7, 2014

chemistry
The solubility of AB(s) in a 1.000-M solution of C(aq) is found to be 0.121 M. What is the Ksp of AB?
May 7, 2014

Algebra 1 math
Deborah rolls two fair dice. What is the probability that the sum of the numbers rolled is 7?
April 29, 2014

urgent (physics)
A certain planet is located 3.54 x 10^11 m from its sun. If its orbital period is 4.9 x 10^7 s, find the mass of its sun.
April 24, 2014

math
Thank you so much
April 14, 2014

math
The sales goal for your store this week is $22,682. The sales goal for your store this week last year was $20,128. Your store has averaged 1775 transactions per week for the last four weeks. Assuming the number of transactions is consistent, what is the average basket size (...
April 14, 2014

Physics
A baby whale gets lost from his mother while swimming through a large underwater canyon. Frantically the baby whale yells for his mommy. 1.5 seconds later, the whale hears his yell's ECHO from the canyon wall. How far is it to the canyon wall? The speed of sound in water ...
April 3, 2014

I need help (Physics)
A 28 kg ball initially at rest rolls down a 159 m hill. When the ball reaches the bottom it is traveling at 31.3 m/s. How much energy is dissipated by friction on the ball?
March 14, 2014

Math
For what value of a, would the system have an infinite number of solutions? 2x-y=5 8x-47=2a A) 2 B) 4 C)5 D)10 E)20
March 14, 2014

geometry
THANK STEVE i HAVE THE ASNWER
March 1, 2014

geometry
IT DOESNT SAY STEVE
March 1, 2014

geometry
If A point K is the reflection of L (2,5) IN THE Y AXIS WHAT IS THE LENGTH OF KL
March 1, 2014

bus-math
Oakwood Plowing company purchased two new plows. In 170 days they must make a payment of $24,330.00 to pay for them. As of today they have $23,600 what rate of interest will be needed.
February 23, 2014

Physics
Three moles of an ideal monatomic gas are at a temperature of 396 K. Then 2438 J of heat is added to the gas, and 897 J of work is done on it. What is the final temperature of the gas?
November 20, 2013

Physics
A container holds 1.3 mol of gas. The total average kinetic energy of the gas molecules in the container is equal to the kinetic energy of a 6.6x10-3 kg bullet with a speed of 670 m/s. What is the Kelvin temperature of the gas?
November 20, 2013

biology
Imagine that you collected your data above, threw away the gel, and re-ran PCR again on the same samples, but using a different set of primers. How will the 2nd gel differ from the first since you're using a different set of primers?
October 28, 2013

MATH
(a) Transform the expression (x − a)^2 + y^2 = a^2 into polar coordinates. (b) Sketch the region R bounded by the curve given in part (a). (c) Use a double integral in polar coordinates to find the area of the region R.
October 26, 2013

physics
The drawing shows a 25.1-kg crate that is initially at rest. Note that the view is one looking down on the top of the crate. Two forces, 1 and 2, are applied to the crate, and it begins to move. The coefficient of kinetic friction between the crate and the floor is μk = 0...
October 1, 2013

algebra
15. To travel a fixed distance, the number of gallons needed is inversely proportional to the miles per gallon rating P of the car that gets 42 miles per gallon (mpg) needs 33 gallons to travel the distance. a. Find an equation of variation N= b. A car that gets 77 mpg needs ...
September 27, 2013

algebra
((5w^2-16w+3)/(5w^2+24w-5))/((15w^2-8w+1)/(3w^2+14w-5))
September 27, 2013

physics
Two cars, A and B, are traveling in the same direction, although car A is 204 m behind car B. The speed of A is 22.9 m/s, and the speed of B is 18.6 m/s. How much time does it take for A to catch B?
September 22, 2013

Physics
A rifle that has been "sighted in" for a 94.6-meter target. If the muzzle speed of the bullet is v0 = 429 m/s, what are the two possible angles è1 and è2 between the rifle barrel and the horizontal such that the bullet will hit the target? One of these ...
September 22, 2013

maths
thank you
September 15, 2013

maths
A truck rolls down a hill subject to acceleration due to gravity and resistance (including air resistance, rolling friction, etc) and the distance si (metres) travelled after ti seconds is observed. Classical mechanics predicts that the distance travelled by the truck should ...
September 15, 2013

math
For every prime p consider all polynomials f(x) with integer coefficients from 1 to p and degree at most p−1, such that for all integers x the number f(2x)−f(x) is divisible by p. Find the sum of all primes p<1000 such that the number of such polynomials is ...
June 23, 2013

MATH hard problem...HELLPPPPPP
Let S={1,2,3,…11} and T1,T2…,TN be distinct subsets of S such that |Ti∩Tj|≤2 for all values i≠j. What is the maximum possible value of N? clue: The empty set is a subset of every set. Thanks
May 21, 2013

MATH Help please.....
Let S={1,2,3,…11} and T1,T2…,TN be distinct subsets of S such that |Ti∩Tj|≤2 for all values i≠j. What is the maximum possible value of N? (The empty set is a subset of every set.)
May 21, 2013

Physics
i input your formula and false
May 21, 2013

Physics..Elena or anybody please help
0.881
May 20, 2013

Physics..Elena or anybody please help
I(mass=80 kg) sit down in the center of a trampoline and the surface sinks down by a distance of 10 cm when I reach equilibrium. How far above the ground in m must the trampoline be placed so that if I jump onto the trampoline from a height of 3 m above the surface of the ...
May 20, 2013

Math
Thank you Steve.
May 8, 2013

Math
Having a problem writing an expanded number in notation in descending order. Ex. 92,563,174. I know the placements and the number but have a problem when it comes to write it. Can you please help. I would appreciate an example so much.
May 8, 2013

Elements of Calculus
I cant seem to figure this one out, please help. A company is manufacturing kayaks and can sell all that it manufactures. The revenue (in dollars) is given by R=750-(X^2/30) where the production output in 1 day is x kayaks. If production is increasing at 3 kayaks per day when ...
May 3, 2013

Phyics
In a solar water heater, energy from the Sun is gathered by water that circulates through tubes in a rooftop collector. The solar radiation enters the collector through a transparent cover and warms the water in the tubes; this water is pumped into a holding tank. Assume that ...
April 12, 2013

Statistics
Given a study of 9804 overweight or obese subjects with preexisting cardiovascular disease and/or type 2 diabetes. Subjects randomly assigned to subitramine (4906 subjects) or a placebo (4898 subjects) in a double-blind fashion. Primary outcome was observed in 561 subjects in ...
April 9, 2013

math
x+2/3x-6*x^2-3+2/x^2-x-6
March 4, 2013

math
75% of teenagers own cell phones and ofthose who own cell phones, 87% use text messaging. 1. What % of teens own cell phones AND text? 2. Among those who own cell phones and text, 15% send more than 200 texts a day, or more than 6,000 texts a month. What % of all teens own a ...
February 21, 2013

physics
A ray of light is incident at an angle of 20degrees to the normal on one face of an equilateral prism made in glass of refractive index 1.523. Find the total deviation produced.
November 1, 2012

Chemistry
Why did you need to know the density of the bleach solution? Why didn't you measure the density of h2o2 solution as well? Stoichiometry lab problem
October 28, 2012

Physics
To move a large crate across a rough floor, you push on it with a force F at an angle of 21° below the horizontal, as shown in the figure. Find the force necessary to start the crate moving, given that the mass of the crate is m = 29 kg and the coefficient of static ...
October 27, 2012

Physics
Thank you very much Elena for that and also for promptly answering my question on a timely manner!!!
October 25, 2012

Physics
You are pulling your little sister on her sled across an icy (frictionless) surface. When you exert a constant horizontal force of 114 N, the sled has an acceleration of 2.3 m/s2 If the sled has a mass of 7.6 kg, what is the mass of your little sister? I don't need the ...
October 25, 2012

physics
Thank you!
October 24, 2012

physics
A light of ray is incident at an angle of 58degrees on the plane surface of a block of glass of refractive index 1.60. Some light is reflected on the other side of the normal at the same angle as the angle of incidence. Find: a.the angle between the light reflected from the ...
October 24, 2012

physics/light reflection
A light of ray is incident at an angle of 58degrees on the plane surface of a block of glass of refractive index 1.60. Some light is reflected on the other side of the normal at the same angle as the angle of incidence. Find: a.the angle between the light reflected from the ...
October 24, 2012

algebra
=12+24*6*2-17 =283
October 24, 2012

Physics
thank you!
October 23, 2012

Physics
The following four lenses are placed together in close contact. Find the focal length of the combination. Lens 1- F'= +200mm Lens 2- F'= -125mm Lens 3- F'= -400mm Lens 4- F'= +142.9mm
October 23, 2012

Physics
You are riding on a jet ski directed at an angle upstream on a river flowing with a speed of 2.8 m/s. If your velocity relative to the ground is 8.9 m/s at an angle of 26.0° upstream, what is the speed of the jet ski relative to the water? (Note: Angles are measured ...
October 14, 2012

Stats
I ran this an an independent samples t-test. It is a t rest according to the professor, just want to make sure I have the right one. A researcher wanted to answer the following question: What is the difference in students' computer anxiety based on whether or not they own ...
July 14, 2012

Physics
1. A bullet of 0.0500 kg is fired into a block of wood. Knowing that the bullet left the gun with a muzzle velocity of 350. m/s, and the bullet penetrates .15 m into the block of wood, determine: a) The average force required to stop the bullet. b) The impulse exerted by the ...
July 14, 2012

stsats
A researcher wanted to answer the following question: What is the difference in students' computer anxiety based on whether or not they own computers? The researcher surveyed 92 undergraduate education students via an online survey. In the survey, the researcher asked a ...
July 9, 2012

Statistics
I bemieve the t test is paired , want to make usre beofre I run the stats. A researcher wanted to answer the following question: What is the difference in students' computer anxiety based on whether or not they own computers? The researcher surveyed 92 undergraduate ...
June 24, 2012

math
The sales goal for your store this week is $22,682. The sales goal for your store this week last year was $20,128. Your store has averaged 1775 transactions per week for the last four weeks. Assuming the number of transactions is consistent, what is the average basket size (...
May 8, 2012

physics
A proton that has a mass m and is moving at 250 m/s in the + direction undergoes a head-on elastic collision with a stationary oxygen nucleus of mass 16m. Find the velocities of the proton and the oxygen nucleus after the collision
May 7, 2012

physics
A proton that has a mass m and is moving at 250 m/s in the + direction undergoes a head-on elastic collision with a stationary oxygen nucleus of mass 16m. Find the velocities of the proton and the carbon nucleus after the collision
May 6, 2012

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