Math.. please helpp!

180,394 results

urgent alg 1

add or subtract 2 2 (2t -8t)+ (8t + 9t) second question 3 2 3 (t +8t ) + (-3t ) please helpp its urgent i have the answer butt im not suree pleasee helpp

math helpp please!!!

2Y-1 p-1 ----- - ---- 2y+5 p+3

Math

Math - Tyler, Wednesday, May 14, 2014 at 2:51pm Solve (z +2)^ 4/3 = 4 where z is a real number please helpp

pre-algebra-math

two fractions equivalent to the given factor 18/21 and the other 3/27:) please helpp

MATH Is there no one who can helpp???????

how do i simplify -9/2x^-3/2??? please help i dun need a answer necessary just an explanation is fine :)

MATH

HELP? Exam in 20 mins -dont' have any idea how to do this question; please helpp.. anyone! PLEAZE A.S.A.P. minimize p= 15x +18y subject to x+2y<=20 3x + 2y>= 36 x>=0 y>=0

I HAVE A MATH TEST TOMORROW HELPPP PLEASE!

im not sure how to find the first four terms of each arithmetic sequence tn=4+(n-1)(3) helpp me pleasee!

I HAVE A MATH TEST TOMORROW HELPPP PLEASE!

im not sure how to find the first four terms of each arithmetic sequence tn=4+(n-1)(3) helpp me pleasee!

math log PLEAseee helpp pretty please!!!

determine the point of intersection y=logbase 10(x-2) and y=1-logbase 10(x+1)

math

37 is what percent of 144, to the nearest percent? please helpp

algebra

evaluate the expression n + (-5) for each value of n. n=312 i don't know how to do this..please helpp..

calculus--please helpp

if the line 3x-4y=0 is tangent in the first quadrant to the curve y=x^3+k, find k. all i know is that its related to finding a derivative and i m basically completely lost....can please someone provide me some help?????

Ms Sue please helpp

Find a fraction equivalent to the recurring decimal 0.435643564356....

please help!

How do you believe computer mediated communications may affect the future of human communications? PLEASE HELPP !!!!

please help!

How do you believe computer mediated communications may affect the future of human communications? PLEASE HELPP !!!!

Literature

I still havn't figured out where the exposition of The Miracle Worker is. Please helpp! Thanks -MC

Pre-Calc/Trig

Helpp please State the domain and range of each of the following functions: 1. f(x)=1/(x+3) 2. g(x)=√x+6 3. h(x)=x^3+2x+5

physics need urgent helpp

i have tried everything, please helpp A snowmobile, with a mass of 530 kg, applied a force of 410 N backwards on the snow. What force is responsible for the snowmobile’s resulting forward motion? (Hint: Think action–reaction force pairs.) If the force of friction on the ...

Math

Find sec θ and csc θ. If tan θ =3 and cos θ>0. Please helpp, i don't get identities

trig. identities

sin2x+sin2y=2sin(x+y)cos(x-y) Please helpp mee!! thank you sooo much really!!

science

the making of polymers is an example of the category of work done by chemists calledd ________ fill in the answerr. please helpp!

math

definition of area ??? helpp :/

math!

how do you do lcm i know i did it in like 1st grade but i need helpp!!

math again helpp

0.6x + 0.8 = 1.4 Explain each step and identify the property

Stupid Algebra

13a squared times b(-4a cubed b cubed c) and no, I am not making this up. PLEASE HELPP POOPOO

urgenttttttttttttttttt please helpp??

how did the involvement of the u.s in the politics of southeast asia,korea, and vietnam impact the u.s political climate of the 1950's? any help is appriciated history is my worst subject

chemistry... HELPP

Place charges and electron dots as needed on each ion. As Se Br K Ca Ga. I answered: As3+ Se2- Br- K+ Ca2+ Ga2+ but i got it wrong so please helppp!!!

physics please helpp

Find the minimum diameter of a 51.5-m-long nylon string that will stretch no more than 1.01 cm when a load of 68.9 kg is suspended from its lower end. Assume that Ynylon = 3.51·108 N/m2

Probability Please helpp

For each integer n ≥ 4, let an denote the base-n number 0:133n. The product a4a5 : : : a99 can be expressed as m/n! where m and n are positive integers and n is as small as possible. What is the value of m?

physics to Elena please reply

A scuba diver has an air tank with a volume of 0.010 m^3. The air in the tank is initially at a pressure of 1.0x10^7 Pa. Assume that the diver breathes 0.400 L/s of air. Find how long the tank will last at a depth of each of the following. (a) 1.0 m min (b) 10.0 m min Please ...

simple easy math question PLEASEEE HELPP!!!

is this true? log^2 x = (logx)^2

physics

A scuba diver has an air tank with a volume of 0.010 m^3. The air in the tank is initially at a pressure of 1.0x10^7 Pa. Assume that the diver breathes 0.400 L/s of air. Find how long the tank will last at a depth of each of the following. (a) 1.0 m min (b) 10.0 m min Please ...

physics

A scuba diver has an air tank with a volume of 0.010 m^3. The air in the tank is initially at a pressure of 1.0x10^7 Pa. Assume that the diver breathes 0.400 L/s of air. Find how long the tank will last at a depth of each of the following. (a) 1.0 m min (b) 10.0 m min Please ...

Math

Find all x, -4pi < x < 6pi, such that [cos(x/3)]^4 + [sin(x/3)]^4 = 1 PLEASEEE HELPP! :(

Physics please someone help me

A scuba diver has an air tank with a volume of 0.010 m^3. The air in the tank is initially at a pressure of 1.0x10^7 Pa. Assume that the diver breathes 0.400 L/s of air. Find how long the tank will last at a depth of each of the following. (a) 1.0 m min (b) 10.0 m min Please ...

Help!!!

Caring,Responsibility,Effort, Respect,Honesty,and Choices..............What are they? Please Helpp!!!!!!!!!!! Could it be character traits? Political slogans? Abstract nouns? =) Words we can expect to be bombarded with every day from now until Nov 7th??

physics PLEASE helpp

Find the net change in entropy when 213 g of water at 0.0°C is added to 213 g of water at 96.9°C.

Math

For math, I have to find the area of a hexagon when all I know is that each side equals x. I also know that I have to use 3 thereoms. HELPP!

algebra pleassee helpp

(a+6/2) - 1/4= (2a-2)/3

physics please helpp

A 1.67-kg block of aluminum at 21.7°C is to be melted and reshaped. How much heat must flow into the block in order to melt it? use the following values: For copper: c_copper=0.386 kJ/kg.K T_fusion=1359 K L_fusion=205 kg/K

chemistry

The reversible reaction n2(g) + 3h2(g)<-> produces ammonia, which is a fertilizer. At quilibrium, a 1-L flask contains 0.15 mol H2, 0.25 mol N2, and 0.10 mol NH3. Calculate K eq for a reverse reaction? Please HELPP!

math,,,,helpp

describe strategies you have found for deciding whether a fraction is between 0 ans 1/2 or between 1/2 and 1???????????????????

PreCalculus

Write an equation to construct a function whose graph is like that of y=x^2, except for pieces removed for values between 3 and 5, and 8 and 9. I am not sure how to approach this question. Would I make a piece wise function? PLease helpp brains about to explode!

social studies

what did freedom to former slaves and how did their lives change in the aftermath of the civil war? also could the federal government have done more to helpp southern africa americans after the civil war? please explain

physics someone please helpp

A scuba diver has an air tank with a volume of 0.010 m^3. The air in the tank is initially at a pressure of 1.0x10^7 Pa. Assume that the diver breathes 0.400 L/s of air. Find how long the tank will last at a depth of each of the following. (a) 1.0 m min (b) 10.0 m min Please ...

Chemistry

An unknown salt AS x XH2O was analyzed and found to contain 16.4 percent water. If the anhydrous salt has a formula mass of 183 amu, find the water of crystallization (X) for the hydrate. I have no idea how to figure this out! HELPP PLEASE!!

Ap english

I have to write an essay that compares and contrasts the rhetorical strategies of tone, lexicon, and syntax from two sermons given by the same person. How do i do this??? Helpp please!! (the sermons are called "Beauty of the World" and "Sinners in the Hands of an Angry God" by...

ratio and proportions

a fruit punch recipe calls for 3 parts of apple juice to 4 parts of cranberry juice . how many liters would be added to 4.5 L of apple juice?????? please helpp

Math.. please helpp!

A female moth lays nearly 150 eggs. In on year there may live up to five generations. Each larva eats about 20mg of wool. Assume that 2/3 of the eggs die and that 50% of the remaining moths are females. Estimate the amount of wool that may be destroyed b the descendants of one...

physics please helpp

A sinusoidal wave on a string is described by the equation y = (0.169 m) sin (0.713 x - 41.9 t), where x and y are in meters and t is in seconds. If the linear mass density of the string is 10.1 g/m ... a) ... the phase of the wave at x = 2.27 cm and t = 0.175 s. ? b)... the ...

9th grade

find the unit rate 3 tablespoons for 1.5 serving how do u do it??? helpp thanks

geo HELP!!

what are examples of formal economic activities? helpp plz and thanku :)

Algebra2

Helpp? Graphs of functions !! I need to determine if these are odd or even? 1. f(x)=x^5-x 2. f(x)=5 3.f(x)=x^4+2x^3

chemistry... HELPP

What is the cell potential for the reaction Mg(s) + Fe^2+(aq) -----> Mg^2+(aq) + Fe (s) at 63 degrees celsius when [Fe^2+]= 3.30 M and [Mg^2+]= 0.110 M

Math. Due in 4 hours. Please helpp!

A female moth lays nearly 150 eggs. In on year there may live up to five generations. Each larva eats about 20mg of wool. Assume that 2/3 of the eggs die and that 50% of the remaining moths are females. Estimate the amount of wool that may be destroyed b the descendants of one...

your preciouss helpp please

how can you condense these cos^3x* cos2x^2 cos^3x+ cos2x^2 cos^3x- cos2x^2 Thank you soo much

MATH HELPP!!

FRANCIS PACKED A BAG FOR HER VACATION.SHE TOOK 4 T SHIRTS,2 SWEATERS, 3 PAIRS OF JEANS, HOW MANY COMBINATIONS OF 3 COULD SHE MAKE USING EACH ITEM ONCE.MAKE A TREE DIAGRAM ---->>> THNX!!

math~ helpp pplease

(3,5) is a point on the graph of y = f(x). Find the corresponding point on the graph of each of the following relations a) y=3f(-x + 1) + 2 what do I do with the negative sign before the x (-x)?

math helpp

8. Convert the scale to a unit rate. Show your work. Interpret the meaning of the unit rate.

Biology

Sponge bob notices that his pal Gary is suffering form slimotosis , which occurs when the shell develops a nasty slime and gives off a horrible odor. His friend Patrick tells him that rubbing seaweed on the shell is the perfect cure, while Sandy says that drinking Dr.Kelp will...

math helpp

kathy will babysit six cats. she charges $75 for the week for supplies and $8 for each hour,h,she works. write an expression for the total amount kathy charges. -->> THNX!!!

SCIENCE. I NEED HELPP

How do trees change the environment, making it less favorable for grass to grow?

math

A certain brand of cereal costs $3.25 per box before sales tax is added. When you buy 5 or more boxes of this cereal you receive 1 additional box for free. What is the average cost per box of cereal for 6 boxes before sales tax are added ? Please helpp

Math HELPP!!!!

as a part of a geometry assignment john drew an equilateral triangle. which of the following dimensions could reprent the side length of the triangle john drew? 10,11,12 13,15,17 16,18,21 17,17,17•• Correct me!!

Science

Cannabis tricks nerves in the brain into sending distorted messages. Which of the drugs effects on the body could this explain??? Helpp!

Math HELPP

After increasing the price by 15%, the price of the book becomes 45. What was the original price of the book?

chemistry... HELPP

Chemistry Equilibrium Constant PLEASE Help!? In an experiment, equal volumes of 0.00150 M FeCl3 and 0.00150 M NaSCN were mixed together and reacted according to the equation: Fe3+ (aq) + SCN– (aq) <--> Fe(SCN)2+ (aq) The equilibrium concentration of FeSCN 2+(aq) was 2....

science

i need help with these questions because i need to write a report on it helpp please What are the implications of stem cell reasearch for today and future generations What are stem cells? What are they capable of? How are they used in science/ medicine presently? What ...

algebra

Find the x-intercept and the y-intercept of the graph of: 4x-2y=8 a. (2, -4) b. -4;2 c. (4, -2) d. 2;-4 I'm stuck between a and d. anyone helpp?

algebra 2

Find the x-intercept and the y-intercept of the graph of: 4x-2y=8 a. (2, -4) b. -4;2 c. (4, -2) d. 2;-4 I'm stuck between a and d. anyone helpp?

Sciencee

Whoopss! Okayy, So does a change in direction change acceleration? I think it does, But i'm not suree. Helpp! :))

Algebra helpp i am going to fail

The length of a side of a square is 3x+2 . What is the area of this square in terms of x ?

economics PLEASE HELP

According to the permanent hypothesis, households will tend to react to a temporary tax cut by: A. assuming the new tax level will be permanent. B. saving most of the additional disposable income. C. increasing consumption sharply in response to the higher disposable income. D...

vocabulary

i need to put 20 vocabulary words in a story helpp!!

Chemistryy....PLEASE HELPP HAVE MIDTERMMM

A 2.00 ml sample of an aqueous solution of hydrogen peroxide, H2O2 (aq) is treated with an excess of Kl (aq). The liberated I2 requires 12.40 mL of 0.1025 M Na2S2O3, for its titration. Is the H2O2 up to the full strength (3% H2O2 by mass) as an antiseptic solution? Assume the ...

sara

which of the following is an example of capital? A. money in a Swiss bank account. B. a bulldozer C. a CD by Metallica D. a Dracula costume for Halloween not sure which one to choose? helpp

Physics

A tennis ball is thrown horizontally from an elevation of 20.60 m above the ground with a speed of 21.0 m/s? Where is the ball after 2.00 s? vertical m from the ground? If the ball is still in the air, how long before it hits the ground? (If the ball is not in the air, enter 0...

physics PLEASE helpp

Suppose 0.0210 kg of steam (at 100.00°C) is added to 0.210 kg of water (initially at 19.5°C.). The water is inside a copper cup of mass 48.9 g. The cup is inside a perfectly insulated calorimetry container that prevents heat flow with the outside environment. Find the final ...

Chemistry

Calculate the percent yield of iron if 950 g of Fe3O4 underwent the reaction shown in the chemical equation below and 533 g of Fe was isolated from the reaction mixture. Fe3O4 (s) + 2 C(s) ----> 2 CO2 (g) + 3 Fe(s) 1). 25.9% 2). 77.5% 3). 56.1% 4). None of the above. Based ...

HELPP math

13,14,29,26,41,53,60,7,89,14 Based on the numbers above what is the variance and the standard deviation of the data set. I think 616.2 is the variance I think 24.83 is the standard deviation Am I correct????

math

Mary's father is three times as old as Mary. If the sum of their ages is 56 years, what are their ages. pleaseee helpp in steps i am 12 years old

Probability Pþease helpp

Select numbers a and b between 0 and 1 independently and at random, and let c be their sum. Let A, B, and C be the results when a, b, and c, respectively, are rounded to the nearest integer. What is the probability that A + B = C?

Science chemistry

It takes 1 hour and 17 min. for a 1.000gsample of a certain isotope to decay to 0.121g. What is the half-life of this isotope? plssss helpp

chemistry

It takes 1 hour and 17 min. for a 1.000g sample of a certain isotope to decay to 0.121g. What is the half-life of this isotope? plssss helpp

social studies

Between 1850 and 1950 the productivity of the average American farm worker: A. declined B. remained about the same C. doubled D. quadrupled I'm unsure which choice to choose? helpp

calculus

limit as x approaches 2 where f(x)=5x-5 Find a δ such that | f (x) - 5 | < 0.01 if | x - 2 | < δ. (Give your answer correct to 4 decimal places.) Need helpp!!! I have no idea how to do it. and nobody that can help!!

Physics helpp

Newtons 2nd law The force of earths gravity is about 10 N downward. Whats the acceleration of a 15kg backpack if lifted with a 15N force??

physics please helpp

A copper sheet of thickness 2.09 mm is bonded to a steel sheet of thickness 1.35 mm. The outside surface of the copper sheet is held at a temperature of 100.0°C and the steel sheet at 26.3°C. a) Determine the temperature (in °C) of the copper-steel interface? b) How much ...

Math Please help

Find the next number in the sequence -2,4,-8,16,____ 243,-81,27,-9,____ 34,-68,136,-272,____ on the first, the sequence alternates signs, and is 2^n. Next term is -32 On the second, divide by three, alternate signs. Third, alternate signs, double... thankkss i need helpp on ...

english

In the memoirs, “Barrio Boy” and “No Gumption”, how are these two memoirs similar? How are they different? In what ways are the authors’ choices and depictions related to the subject matter of their stories? pleeeaaaasssseee helpp.

math helpp! :|

in a bag of coloured cubes, the ratio of red cubes to total number of cubes is 5:7. If there are 105 cubes in the bag, how many cubes are red? i don't get this :|

Geometry helpp!!

Can anyone graph this please!!! 5. Perform these transformations on ∆TRL and compute the perimeter of the pre-image and final image. a. Rotate ∆TRL 180° about the origin and label the resulting image ∆T’ R’ L’. b. Reflect ∆T’ R’ L’ across ...

Geometry helpp!!

Can anyone graph this please!!! 5. Perform these transformations on ∆TRL and compute the perimeter of the pre-image and final image. a. Rotate ∆TRL 180° about the origin and label the resulting image ∆T’ R’ L’. b. Reflect ∆T’ R’ L’ across ...

U.S.History

In the Declaration of Independence what reference is there to Native Americans? What attitude toward Native Americans does this express? pleease helpp!!!

CHEMISTRY HELPP!!!!

which of the following is not highly ionic? BeO, BaO, CaO, SrO, MgO BeO has the least ionic character of those listed.

maths

Helpp mee!!! I'm really stuck so I need help. Teresa has three times as much money as Rita. Between them they have €10. How much has Teresa?

maths

Helpp mee!!! I'm really stuck so I need help. Teresa has three times as much money as Rita. Between them they have €10. How much has Teresa?

social studies 9

make five observations about life in the backwoods of upper Canada. what jobs did pioneers do for themselves that we would never think of doing for ourselves today? PLLEZZZ HELPP CAN YOU ANSWER IT I DON'T NO WAT TO WRITE FOR THIS QUESTION

MATH HELPP!!!

The graph below was drawn with output on the vertical axis and input on the horizontal axis. What does this graph indicate about the relationship between the input and the output? (There is a line line that is straight on the +7 on the graph)

chemistry

The concentration of NaOH in a solution is 7.00 10-6 M. What is the [H3O+] in the solution? _______________M What is the [OH-] in the solution? __________M What is the pH of the solution? What is the pOH of the solution? HELPP?? i don't understand any of this...

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