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Posts by tom

Total # Posts: 1,421

maths
one number multiplied by three less than itself equals 18. If that number is positive, what is it? Please show working.

Algebra
Write an absolute value inequality to fit the graph below: There is a Number line with 14 on the left and 26 on the right with solid dots on both.

Physics (Mirror Rays)
Lol, thanks.

Physics (Mirror Rays)
3. When an object is located very far away from a convex mirror, the image of the object is 18 cm behind the mirror. Using a ray diagram drawn to scale, determine where the image is located when the object is placed 9.0 cm in front of the mirror. Note that the mirror must be ...

Physics
A 3-kg mass has a speed of 5.0m/s at the bottom of a 37 degree incline. How far up the incline does the mass slide before it stops if the friction force acting upon its motion is 20N? Thanks.

Math
In a middle school computer club, 3/8 of the members are girls. Of the girls in the club, 2/5 are 6 graders. Write and solve an equation to find the fraction of the members of the club that are 6 grade girls

chem
i got 12.5g am i right?

chem
if 4.1g of Cr is heateed with 9.3g of cl, what mass of crcl3 will be produce

math
given cot theta = 11/12, find tan of theta and sin of theta

Statistics
The correlation coefficient between X and Y is the same as the correlation coefficient between Y and X: True or False - I believe it is True because calculating the correlation coefficient for X and Y and Y and X will give you the same answer.

Chemistry
Identify the acid-base pairs in the following reactions HSO4^1-(aq) + OH^1- <==>SO4^2-(aq) + H2)(I)

English
A similie , metaphor (etc) for relief??

math
if logb C= A, explain why logb 1/c = -a

chemistry
60.0 g of iron that has an initial temperature of 250 degrees C and 60.0 g of gold that has an initial temperature of 45.0 degrees C are brought into contact with one another. Assuming no heat is lost to the surroundings, what will be the temperature when two metals reach ...

chemistry
Suppose a balloon is filled so that its volume is 2.00 L when the pressure is 1.10 atm and the temperature is 300k. What volume will it occupy if it rises to an elevation where the pressure is 418mm Hg and the temperature is 200k?

Chemistry
A gas occupies 56.44 L at 2.00 atm and 310 K. If the gas is compressed to 23,520 mL and the temperature is lowered to 281 K, what is the new pressure in torr?

economics
the elasticity

economics
Explain why we can’t predict tax revenues by using the amount of the tax and the previous time period’s consumption.

economics
cost effectiveness means you are not reaching the efficiency

algebra 2
what is the inverse of the function f(x) = 6+x ----- 2x

computer programming
Create the psuedocode for an application class named Monogram. Its main() method holds three variables that hold your first, middle, and last initials, respectively. Create a method to which you pass the three initials and that displays the initials twice—once in the ...

World history
Why are you cheating on this test?

American Government
Tahahahaha Literally

physical science
Newton's second law. The heavier object has more mass, and acceleration is direc tly proportional to force and inversely proportional to mass.

physical science
Newton's second law. The heavier object has more mass, and acceleration is direc tly proportional to force and inversely proportional to mass.

Physics
the graph is not shown.

Physics
the graph is not shown.

science physics solar
. 6 x 72 because the voltages are additive in series.

Calculus
I = A/s^2 + 8A/(600-s^2) where I = illumination, s = distance from A, A is a constant Take the derivative of I relative to s, set to zero, and solve for s, the distance

Math
your question is not readable

math: counting techniques
Six problems (numbered 1 to 6) are set for a math test. A student can score 0, 1, 2, 3 points for each problem. Find the number of ways to score a total of 15 points for the six problems.

Science
work is defined as force (parallel to the motion) x distance The force in this case is the weight. Calculate the weight of the object, multiply x the distance. The force is up as is the distance, so they are both parallel.

Science
work is defined as force (parallel to the motion) x distance The force in this case is the weight. Calculate the weight of the object, multiply x the distance. The force is up as is the distance, so they are both parallel.

Science
work is defined as force (parallel to the motion) x distance The force in this case is the weight. Calculate the weight of the object, multiply x the distance. The force is up as is the distance, so they are both parallel.

history
Definitely B

math
Along the length there will be 7 posts on each side. The width will only need one post each. 7x2 + 1x2 = 16 posts total The length of the fence is the perimeter of the rectangle.

math
6L + 6B = 45 3L + 2B = 19 Solve the two equations for L and B, which are the price of leashes and brushes, respectively.

physical science
They are in opposite directions, so subtract to find the resultant force.

science
distance = 1/2 at^ a= 9.8 m/s/s. and t=2s plug in and find the distance it has dropped. subtract that distance from 80m to find the new height. PE = mgh, where h is the height. Plug in and find PE KE = 1/2 mv^2, so we need v after 2s The equation is v= vo + at, and vo=0 So, v...

Physics
We are given C1 and C2. V is the same across each capacitor, 300 V since they are in parallel. Q = CV for each capacitor. W = KE = 1/2 CV^2 for each capacitor

PLEASE ANSWER!!
If some of the vibrational waves of the earthquake have the same frequency or are a factor of the natural frequency of the buildings, then the buildings can start swaying in "tune" with the waves. It's like someone pushing a swing. The frequency of the push has ...

Physics
A great white shark of mass m1, coasting through the water in a nearly frictionless way at speed v1 engulfs a tuna of mass m2=0.10 m1 traveling in the same direction at speed v2 swallowing it in one bite. a) What is the speed of the shark after its meal? b) Did the shark gain...

Physics
A model rocket has a mass of 0.435 kg. It is mounted vertically and launches directly up with a thrust force of 13.1 N. a) What is the weight of the rocket? b) Determine the net force on the rocket as it is launched. c) What is the acceleration of the rocket at lift-off?

math algebra
At a college, records show that the average persons grade point average, G, is a function of the number of hours he or she studies and does homework per week h. The grade point average can be estimated by the equation : G=0.01h^2 +0.2h+1.2 To obtain a 3.2 GPA how many hours ...

American Government
LIFE SAVER

math algebra
A tax free municipal bond pays 4.75% compounded continuously. What is the value of a $2,000 bond after 30 years? Round your answer to the nearest cent. [Hint- A=P e^rt where P= present(initial) value, A= future value, r= annual rate, and t= number of years] P.S.The rt is an ...

Math
write 2 equations 30+25m and 300-20m set them equal to each other and solve for m

MATLAB
trying to make this program work, but it only works for the number 12.. % this program will determine if an integer is prime and determine % its prime factors function MAIN clear; clc; % define number(s) to be checked, call function, and print output N = 12; [answer,...

anatomy
false, it is a short term stress hormone. It deals with flight/fight response.

math
common denominator should be 12

math
just add 5/3 + 3/4 +1/2 = answer

Chemistry
To find total pressure since you have such a high pressure you have to treat the gases as non-ideal. this means that you have to find the pseudocritical temperature and pressure of the gas mixture which is T'c= Ya(Tca)+Yb(Tcb) and P'c= Ya(Pca)+Yb(Pcb) where Y is the ...

matlab
Im trying to figure out how to write a program that finds prime factors of a number. I have the following but it only works for the number 12 for some reason. % this program will determine if an integer is prime and determine % its prime factors function MAIN clear; clc; % ...

algebra
So this is what I got: (b+9)+b+c=82 that means that c= 82-((b+9)+b) putting it all together we have (b+9)+b+82-((b+9)+b)= 82

science
P= densityofwater*g*h + atmospheric pressure If you look at the units : m/s^2 * kg/m^3 * m this gives you kg/m*s^2 which is pressure in Pa

algebra 2
what do you mean it comes last

algebra 2
What is the sqaure root of -180x^8 I got 6x^4 i radical 5

Math
How do I find a value for k that will make the expression factorable. 36x^2 + 8x + k?

math
My average in AP world history is a 90, The weight on the class is 1.10% with the weight, whats my average?

chem
The noble has configuration for Ta is [Xe] 6s2 4f14 5d3 does the order in which i arrange the principle energy levels matter when i write the configuration? Like should it be [Xe] 5d3 6s2 4f14

chem
how is it 4s1?

chem
whats the noble has configuration for chromium? is it [Ar] 4s^2 3d^4

Quick Physics Question
Are both linear and angular momentum conserved in static equilibrium ?

Computer Science
Write a program that Will prompt a user to enter his/her name and number.use a while loop that will display the user name times the entered number

math
A certain number was increased 5 times, then decreased by 3, then halved. The result was 0.3 less than the original number. What was the original number?

Physics
A 1.11 kg toy train rolls around a circular horizontal track. If the train has an angular acceleration of -2.2 rads/s2 and is released with an angular speed of 17.0 rpm, what time is required for the train to come to a complete stop?

Physics
A 51.6 g box is left 17.8 cm from the centre of a merry-go-round. If the box has coefficients of friction of μs = 0.790 and μk = 0.480 with the merry-go-round, what is the maximum speed of the merry-go-round without having the box slide off of the merry-go-round?

honors chem
10.00amu

honors chem
naturally occurring boron is 80.20% boron 11 (atomic mass= 11.01amu) and 19.80% of some other isoptopic form of boron. what must the atmoci mass be be in order to account for the 10.81 amu averafe atomic mass of boron? round to two decimal places i got 9.999 and rounded to 10.00

Algebra
A plane can fly 500 miles against the wind in the same amount of time that it can fly 775 miles with the wind. If the wind speed is 55mph, find the speed of the plane in still air.

art
this image was created by using basic math concepts that include all of the following except A)knowing how to create a pattern B)using understanding the angles of the shapes C) a basic understanding of different geometric shapes. D) applying appropriate formulas to determine ...

Physics
A man walks the distance of 8km in a direction of 20degrees east the walks another 6km in a direction 50degrees south east. Using vector diagrams find the magnitude and direction of the final displacement relative to the starting point.

chemistry
WHAT does it mean for a phase of matter to have a definite shape and volume

Physics
What happens to centripetal force when speed decreases, in the special case that the object continues moving in a circle of the same radius? A) The radius cannot stay the same. B) The force also decreases. C) The force increases. D) Speed does not affect centripetal force. E) ...

Physics
Why does "banking" or (tilting) a turning road create centripetal force? A) Because banking the corner keeps car from going too fast. B) Because the angle of the roadway creates a centripetal force. C) Because the angle of the roadway helps cars counteract friction. ...

algebra 2
rationalize 7/ (cube root of 3) + 2

algebra 2
wait it tis, nevermind. im right ,

algebra 2
is that the same as 3 times the cube root of 25 divded by 5 ?

algebra 2
how do you rationalize 3 divided by the cube root of 5 3/ cube root of 5

english
what is the speaker saying about her marriage vows in the fourth stanza in the wifes lament

Physics
Ximena stands near the edge of a cliff 20 ma bove her friend Javier. If she throws a ball to Javier at an angle = 30 below the horizontal and it reaches him in 1.0 s, ignoring air resistance, what was the magnitude of the sandwich's initial velocity? (use g = 10 m/s2)

Physics
Two kittens are running toward each other, one is named Chloe and the other is named Luna. Chloe runs at a speed of 2.80 m/s and Luna runs at a speed of 1.60 m/s. If Chloe jumps at an angle of 17.0° while still running toward Luna, at what distance from Luna should Chloe ...

Physics
You are walking a dog when the dog sees a cat and runs away from you. You immediately run after the dog at 4.90 m/s. You jump at an angle of 30.0° to try and catch the dog. While you are in the air the dog is able to move an extra 1.72 m away from you. If you are able to ...

Physics
A box of mass m slides down an inclined plane that makes an angle of φ with the horizontal. If the coefficient of kinetic friction is μk, find an expression for the acceleration of the box down the slope. The acceleration due to gravity is g. a. g ( cosφ + μ...

Physics
If C⃗ = -5 i^ - 3 j^ - 4 k^, what is C⃗ × j^?

chemistry
wait my answer is 0.8053mph

chemistry
36cm not 6

chemistry
6 cm/sec to mph i got 9.664mph

math
it is 5 digit even number, the digit 3 is in the hundreds place. The value of the digit 4 is 40.the digit 6 stands for 6 ones. The digit in the ten thousands place is twice the digit in the ten place. the value of the digit in the thousands place is 30 time the value of the ...

spanish
which neighborhood in chicago did cisneros live in from the house on mango street

8th grade math
How do you figure the height of a cube is the cubic inches if 750?

math
At the medal presentation, each person shook hands with every other person. If 10 handshakes took place, how many people were present?

Chemistry
Should've phrased it differently. I meant, why is CuSO4 and Ba(OH)2 given as aqueous solutions in the beginning? That's the problem I was given. I'm not sure why they're soluble when they're not "supposed" to be, according to my solubility rules.

Chemistry
Why is it that copper (II) sulfate with barium hydroxide --> copper hydroxide (solid) + barium sulfate (solid)? According to the solubility rules given to me by my professor, both are insoluble, and therefore should be labeled as solids. Is there something I'm missing ...

Chemistry
Why is it that copper (II) sulfate with barium hydroxide --> copper hydroxide (solid) + barium sulfate (solid)? According to the solubility rules given to me by my professor, both are insoluble, and therefore should be labeled as solids. Is there something I'm missing ...

Physics
If a 12v battery is in a circuit with two resistors. r1 and r2. R2 is 60ohms. A voltmeter measuring on either side of r2 gives a reading of 8v. Calculate the current in the circuit and the resistance of r1. Am I right in thinking the v = i/r 8 = 7.5 / 60 so the current is 7....

computer science
QUESTION 1 When using the OR logical operator to connect 2 conditions to create a complex Boolean expression, neither the first condition nor the second condition has to be true for the complex Boolean expression to be true. True False QUESTION 2 String comparisons are ...

INT 1111
1.True 2.False 3.False 4.True 5.False 6.True 7.True 8.False 9.True 10.True

INT 1111
QUESTION 1 When using the OR logical operator to connect 2 conditions to create a complex Boolean expression, neither the first condition nor the second condition has to be true for the complex Boolean expression to be true. True False QUESTION 2 String comparisons are ...

English
rose asked katie do you know how to change a flat tire

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