# Posts by Mike

Total # Posts: 3,786

math
u to

math
ohhh okay

math

math
dont u have a calculator or are u not allowed to use it anyway ithink its this 38/100 simplified it to 19/50 35/100 simplified it to 7/20

math
probably 55.371 work: for mixed fraction you 6and4/5 multiply5&6 and add 4 and divide it by 5 8 and 1/7 multiply7&8 and add 1and divide it by 7 you shuld get improper fractions and then turn them to decimals and multiply both of them it wuld be much easier to use a calculator

math
use long division for 7/8 and you probably shuld get .875 and then multiply it by 39 and get 34.125

math
probably: 506/27 OR in decimals 18.7407

math
is it (32/3)*(51/9)

Math
welcome

Math
so i think its x=0 then solver y 2(0)-3y=6 y=-2

Algebra
Ithink its this Let d = number of days then cost of west trip: 450d + 1075 cost of south trip: 375d + 1500 375d + 1500 < 450d + 1075 1500 < 75d + 1075 425 < 75d 5.67 < d answer: 6 days or greater

math
welcome

math
its sometimes true

Spanish
!____!

Spanish

Math
multiply 12 by both sides

Math
probably 33.6

math:logarithms
put it in your calculator and see if it works

Mathe
is it(4m/9)+(13-1m/3)=4 ?????

Math, geometry
perimeter of a rectangle = 2width + 2length 30= 2w+2(4) 30= 2w+8 22= 2w w= 11 millimeters

Pre- Algebra
subtract 7n to the other side AND subtract 13 to the other side and also divide 3 to the other side,so 7n-5=10n+13 -5=10n-7n +13 -5-13=10n-7n -18=3n n=-6

AP CHEMISTRY
why pKa2??

math
In math, an array refers to a set of numbers or objects that will follow a specific pattern. An array is an orderly arrangement, often in rows, columns or a matrix. Arrays are used in multiplication and division as it shows a great visual to show how multiplication can be ...

math: elapsed time
Do u want to calculate elapse time?

math: elapsed time
go on gooogle and type in elapsed time in math. And check: Math:Elapsed Time-eThemes

Maths
are u serious? anyway 5cm*10mm/1cm Ans=50mm

help in math
1) x^2 - 6x =0 x(x-6)=0 x=o OR x=+6 check: plug these 2 numbers in the first equation (The One I Gave) and see if it equals 0. 2) x^2 -3x=0 x(x-3)=0 x=0 OR x=+3 3) try this one by yourself

Algebra 1
Are u sure its direct variation or is that an incomplete question?

physics
A. From F=ma i'd say it would be the hummer as its got greater mass, and as Force is constant

chemistry
how many moles of oxygen are required for the combustion of 25.5 g of magnesium

Math

Math
One angle of a triangle measures 120 degrees. The other two angles are congruent. Write and solve an equation to find the measure of the congruent angles.

chemistry
oh no i messed up ! i wrote the wrong elements -_-'' im sorry.And thanks for the website!

chemistry
In a particular redox reaction, Cr is oxidized to CrO4^2– and Cu2^+ is reduced to Cu^+ . Complete and balance the equation for this reaction in acidic solution. Cr + Cu^2+ ---> CrO4^2-+ Cu^+ i started off by doing this 2 x SO3^2- ---> SO4^2- + 2e 2 x Cu^2+ +2e ---&...

Physics
A sprinter of mass 63.7 kg runs at a constant speed of 10.2 m/s in a straight line. Find the extra force the sprinter must exert on the ground to round a curve of radius 10.8 m.

Physics
You are holding a bulletin board weighing 6.46 N in place against a wall while your friend secures it to the wall. To keep it from slipping, you apply a force perpendicular to the bulletin board, pressing it directly into the wall. How large must this force be if the ...

chemistry
Assume the density of aqueous HCl is the same as water (1.0 g/mL) and use the densities of ethanol (0.789 g/mL) and water as well as the actual amount of recrystallization solvent used to calculate the mass of recrystallization solvent.

Math

physics
Four charges with equal magnitudes of 6.50 x 10-15 C are placed at the corners of a rectangle. The lengths of the sides of the rectangles are 4.07 cm and 5.28 cm. Find the magnitude of the electric field at the center of the rectangle, assuming that three charges have the same...

english
wednesday

Chemistry
A sample of 50.0 mL if sulfuric acid that has a density of 1.84 g/mL would have a mass of how many grams?

Chemistry
Calculate the mass of a quart (946 mL) of mercury. The density of mercury us 13.6 g/mL?

Math
A box contains 3 red marbles, 6 blue marbles, and 1 white marble. The marbles are selected at random, one at a time, and are not replaced. Find the probability. P(red and blue and blue) Please help me

physics
A moving particle encounters an external electric field that decreases its kinetic energy from 9530 eV to 7800 eV as the particle moves from position A to position B. The electric potential at A is -69.0 V, and that at B is +39.0 V. Determine the charge of the particle. ...

physics
An electric car accelerates for 7.2 s by drawing energy from its 430-V battery pack. During this time, 1700 C of charge pass through the battery pack. Find the minimum power rating of the car.

Sammons
how to find the product of 38 and 75?

College Algebra
WHAT WOULD THE SCORE BE AFTER 4 MONTHS

language
idk

intro law enforcement
date 9-22-08 fire in a lawyers office main st, ridgefield ct art work was smashed chairs, papers, and curtains started a fire ( match started it) building is empty over night .5 miles from downtown district 1st fire in a chain from arsonist left a law book on the porch what ...

chemistry
The energy levels the electron can occupy in the Be3+ ion can be calculated using the energy level equation. A Be3+ ion with an electron in the n= 3.00 level emitted a photon with a frequency of 7.30 × 1015 Hz. What is the value of the level n for the new energy?

chemistry
yeah sorry hehe thanks!

chemistry
so it would be 0.96 ?is that right? (8x-393.5)+9(-241.8)+x=5113.3 -5324.2+x=5113.3 x=0.96

chemistry
For a particular isomer of C8H18, the following reaction produces 5113.3 kJ of heat per mole of C8H18(g) consumed, under standard conditions. C8H18(g) + 25/2(O2)(g) -> 8CO2(g) + 9H2O(g) DeltaH= -5113.3 kJ What is the standard enthalpy of formation of this isomer of C8H18(g)?

Center
How is the efficiency of pushing a concrete block up a wooden ramp increased

Science
Job Issues related to overdrawing surface water?

prealgebra
Two consective number of square root of 3

math
A rectangular parking lot is to be constructed on land bordered on one side by an alley. There is 360 ft of fencing to use along the other three sides. What should be the dimensions of the lot if the enclosed area is to be maximum?

Physics
What is the magnitude of the electric field at a point midway between a -5.1 microC and a +6.1 microC charge 10cm apart? Assume no other charges are nearby. What is the direction of the electric field?

Physics
87

Social studies
To write a paragraph explaining Lincoln's vision of the united states. Make at least 2 references to specific details of the Gettysburg address.

math
How do u find the area of a shape size 7 1/4 square

pre-algerbra
A farmer is building a square pen 21 feet on each side. He puts one post at each corner and one post every three feet in between. how many posts will he use. please give equation

Physics
A person lifts a 5.2 kg cement block a vertical distance 1.2 m and then carries the block horizontally a distance 7.3 m. Determine the work done by the person and by the force of gravity in this process.

pre calculus
how to figure out: sec squared x = 1/10

Rational Zeros
DERRRR

trigonometry
find v +u if vector =<6,8>and vector for u + <2,1>

math
i don't know how to calculate

math
James travels 624 miles in 8 hours ona train at a constant rate of speed. How many miles does he travel in 3 hours?

Physics
The scale in Fig. P12 is being pulled on via three ropes. (The force on each rope is F = 180 N.) What net force does the scale read? F 30 Degrees

Physics
The two ropes attached to the hook in the figure below are pulled on with forces of F1 = 150 N and F2 = 300 N. What size single force acting in what direction would produce the same effect? F1 45 Degrees F2 30 Degrees

algebra
use the graph of the function f to find f(-4), f(-3), and f(-2)

math
Five employees at the Wild Fowl Publishing Company each come to work by a different one of five means: car, railroad, subway, and walking. They hold these positions at the company: art director, editor, publisher, receptionist, and secretary. Two of them are men named Finch ...

mth
A popular new secretary at the law firm of Farnsworth, Newman, O’Malley, Price, and Reynolds, is taken to lunch by a different one of those five men on each of her first week on the job. Each man took her to eat at a different one of these five types of food: Chinese, ...

Math
Five employees at the Wild Fowl Publishing Company each come to work by a different one of five means: car, railroad, subway, and walking. They hold these positions at the company: art director, editor, publisher, receptionist, and secretary. Two of them are men named Finch ...

MATH
Cereal can be good source of protein.how many quarters cups of cereal are there in 6 1/4

Geomtry
Five fences meet at a point to form angles with measures x, 2x, 3x, 4x, and 5x around the point. Find the measure of each angle.

world history
What helped unite Charlemagne's empire? answer A strong efficient government helped unite Charlemangne's empire

world history
what helped unite charlemagne's empire? Viking attacks

US History
What goes in the first box?

calculus
given f(x)=sqrt(x). find the distance of the point P(2,5) from the line tangent to the functions at x=4.

world history
Who won the battle between the English and the Welsh ? the English right?

calculus
given f(x)=ã(x). find the distance of the point P(2,5) from the line tangent to the functions at x=4.

Physics
Thank you again DRWLS but ref my post "site not working correctly". Still cannot read the answer. Most frustrating. Can I close the adverts? Mike

Physics
I understand there is a relationship between pressure & temperature in a sealed rigid container. An open container is placed in a freezer at -15 degrees C then the door is opened and the cap replaced with the freezer at 1000mb what will the pressure be within the container if ...

Site not working correctly/Physics
I posted a question a couple of days ago which was answered by DRWLS - thank you. Unfortunately I am unable to read the guidance provided as the typing is obscured by the adverts down the right hand side of the page. Look forward to replies. Thanks Mike

Answer: is statement random or discreet? a. Temperature of the coffee served to a randomly chosen customer.

algebra
what is two different word phrases for the expression t-30

Physics

Physics
I understand there is a relationship between temperature & pressure. If a rigid open container was placed in a freezer at -15 degrees C. Removed and its airtight cover replaced simultaneously at 1000mb. What would the pressure be within the container if it was kept in a room ...

Physics
The internal energy of a gas is 900 J. The gas is compressed adiabatically, and its volume decreases by 100 cm3. If the pressure applied on the gas during compression is 1 atm, what is the internal energy of the gas after the adiabatic compression? The answer is 890 J, but I ...

HTML
How do I change the color of the button after a button is pressed in html.

calculus
An object moves in such a manner that its velocity at time t is given by v(t) = t3 - 4t2 +3t At t = 0, it starts at position x = 0. During the interval [0, 4] what is the absolute distance moved?

arithmetic
the sum of the first 8 term of an arithmetic progresion is 220,if the third term is 17.Find the sum of the first 6 items

math
sam chovell is a private detective working in the Bay area. One month he helped the police to solve five mysteries