# Posts by ALLI

Total # Posts: 92

math
Yesterday, the price of a car Andy wanted to buy was \$20,000. Today the car is on sale for \$15,000.00. What is the percent decrease in the price of the car?

science
Take 1mL of 1M NaCl solution, and add 9mL of water. Then take 10microL of the diluted solution and add 40microL of water. What is the dilution? And what is the final concentration of NaCl? So I see how this is a 2:1 dilution, but I am having a hard time figuring out the final ...

Science
Take 1mL of 1M NaCl solution, and add 9mL of water. Then take 10microL of the diluted solution and add 40microL of water. What is the dilution? And what is the final concentration of NaCl? So I see how this is a 2:1 dilution, but I am having a hard time figuring out the final ...

Physics
Thanks for your help! I see my mistake!

Physics
A 4.65-μF and an 9.30-μF capacitor are connected in series to a 60.0-Hz generator operating with an rms voltage of 111 V. What is the rms current supplied by the generator? The capacitors are in series so I used C = C1*C2/(C1 + C2) and got C = 3.1*10^-6 Xc = 1/wC...

Physics
A parallel-plate capacitor is constructed with circular plates of radius 5.6×10−2 m . The plates are separated by 0.27 mm , and the space between the plates is filled with a dielectric with dielectric constant κ. When the charge on the capacitor is 1.9 μC...

French
what word is E L A É S L unscrambled.

finite
.5457811129

chemistry
The limiting reagent is P

chemistry
How many moles of P4O10 can be produced with 9.544 x 10^-1 moles of the limiting reagent?

Chem
Given the following reaction: 4 KO2 + 2 H2O + 4 CO2 ==> 4 KHCO3 + 3 O2 How many moles of O2 will be produced if 3.27 moles of CO2 react completely?

trig
How do I verify this? Cos^4x-Sin^4x=1-tan^2x/sec^2x

Statistics
Bender Electronics buys keyboards for its computers from another company. The keyboards are received in shipments of 75 boxes, each box containing 30 keyboards. The quality control department at Bender Electronics first randomly selects one box from each shipment and then ...

Math fractions
Nata spent \$28 on 2 DVDs. At this rate, how much would 5 DVDs cost? At what rate did she spend her money?

social studies
I came here for question 12 so if there could be an answer for it, that would be great.

Math
Solve the differential equation. Let C represent an arbitrary constant. (Note: In this case, WebAssign expects your answer to have a negative sign in front of the arbitrary C.) (dz)/(dt) + e^(t+z) = 0

physics
Consider the system shown, with m1 = 2.0 kg, m2 = 3.0 kg, and α = 30o. The force F acts horizontally to the left and the kinetic coefficient of friction between m1 and the incline is μk = 0.40. The mass m2 is moving up at a constant speed. (a) What is the magnitude ...

Math
A carpenter has a wooden stick that is 84 centimeters long. She cuts off 25% from the end of the stick. Then she cuts the remaining stick into 6 equal pieces. What is the length of each piece?

finance mortgage payment
your mortgage payment is \$1,500 per month. Of this amount, insurance is %50, property taxes are \$200, and interest averages about \$1,100. Assuming you have other itemized deductions that already exceed your standard deduction and that you are in the 31% marginal tax bracket, ...

algebra
consider the function f(x)=9/x and g(x)=9/x find f(g)x))and any values that may be excluded what is g(f(x)) and any values that may be excluded and functions f and g inverse of eachother please show work

algebra
if f(x)=lnx, g(x)=e^3x, and h(x)=x^4 find following A)(f of g)(x)and the domain of f of g B) (g of f)(x) and the domain of g of f C) (f of h)(x) and the domain of f of h please show work

algebra
use the given zero to find the remaining zeros of the function h(x)=x^4-15x^3+60x^2+70x-816 zero: 5 show work

college algebra
use the given zero to find the remaining zeros of the function h(x)=x^4-15x^3+60x^2+70x-816 zero: 5-3i

college alg :(
if f(x)=lnx, g(x)=e^3x, and h(x)=x^4 find following A)(f of g)(x)and the domain of f of g B) (g of f)(x) and the domain of g of f C) (f of h)(x) and the domain of f of h

college alg
consider the function f(x)=9/x and g(x)=9/x find f(g)x))and any values that may be excluded what is g(f(x)) and any values that may be excluded and functions f and g inverse of eachother

college Alg
graph the parabola, then determine the domain and range. f(x)=x^2x-4x-4

college alg
the function f(x)=6x+9/3x-7 find the inverse and check answer f^-1(x)=? please show work

college algebra
solve the following exponential equation. (e^x-e^-x)/2=6 what is the exact answer? x=? what is the answer approx to 3 decimal places? x=?

college algebra
solve the following logarithm equation log (4x+7)=1+log(x-6) x=? please show work

college algebra
so do i write the domain as (-infinity,infinity) not sure how to write the range you showed. It has to be in interval notation would it be (infinity,-8)?

college algebra
graph the parabola, then determine the domain and range. f(x)=x^2x-4x-4

college alg
for the given functions f and g find the following and state the domain of each result f(x)=3x+1/8x-9; g(x)=5x/8x-9 (they look like fractions) A) (f+g)(x)=? B)domain of (f+g) c) (f/g)(x)=? d) domain of f/g? please show work

college alg
find the equation of a line that is perpendicular to line y=1/6x+6 and contains point (-7,0) y=? please show work so i can see how its done

college alg
find the equation of a line that is parallel to the line x=6 and contains the point (-8,9) please show work, it also wants me to show the answer in an equation

alg
find the domain of the composite function f of g. f(x)=x^2+9;g(x)=sqrtx-7 please show work

algebra
find the functions f and g so that f of g =H. H(x)=(6x+9)^4 please show work so i understand this better. thank you

alg
change the logarithmic expression to an equivalent expression involving an exponent. 4^16=x log (base4)16=x is it x=e^2?

algebra
change the logarithmic expression to an equivalent expression involving an exponent. 4^16=x log (base4)16=x is it x=e^2?

algebra
find the functions f and g so that f of g =H. H(x)=(6x+9)^4 please show work so i understand this better. thank you

algebra
find the domain of the composite function f of g. f(x)=x^2+9;g(x)=ãx-7

college algebra
analyze the graph of the following function. r(x)= x^2+x-6 -------- x^2-x-2 there are 8 steps but they don't make sense to me... please show work!! thanks

college algebra
solve the following inequality. write the answer in interval notation x^3-4x^2-21x<0 please show work so i can understand this problem better! thanks

college algebra
determine the quadratic function f whose graph is given. the vertex is (1,-3) y intercept is -2 please show work so i can see how this is done, thank you!

college algebra
graph the function and state the vertex axis of symmetry, the intercepts, if any: f(x)=x^2-8x+15 Please show work so i can understand this. thank you

algebra
find the following for the function f(x)= (x+5)^2(x-1)^2 a) find the x and y intercepts for the polynomial function f b) determine whether the graph of f crosses or touches the x axis at each x intercept C) put all information together to obtain the graph of f

College algebra
graph the function using transformations, show and state , a) the domain, B) range c) the asymptotes F(x)= 1 ----- -4 x^2 please show work!

college algebra
find the vertical, horizontal, oblique asymptotes, if any, for the given rational function. R(x)=10x^2+19x-15 -------------- 2x+5 please show how you arrived with the answer! thank you

college algebra
graph the function using transformations, show and state , a) the domain, B) range c) the asymptotes F(x)= 1/x^2-4 please show work!

science
A solution has a density of 1.50 g/mL. How many grams are needed to obtain 10.0 mL of solution?

science equation
I don't think I have enough information to answer this question but my teacher says i do. The question is, If I drop a ball off of the AUL building and it take 8 seconds to hit the ground what is the velocity of the ball? I know that v=d/t so I have v=d/8 so there is ...

School
What happens if dams are too big

Physics Lab
a.) 1/4

MATH
the price f an item in a store is reduced by 50%. what is the total percent change as a result of the 2 discounts

Math
An airline has a plan in which a spouse can travel for 75% of the base cost of a ticket, and a child under 12 can travel for 50% of the base cost. a. Using the plan, what will it cost a married couple with three children under 12 to fly if the base cost is 280? b. what percent...

Math
i think your answer is 28% because if you do .35 and times it by 80 you get 28.

geometry
if a regular shaped object has a length of 6 cm, a height of 6cm, and a width of 6 cm, what will the volume?

Algebra 2
simplify ^3√32 not in decimal form?

Algebra 2
simplify ^3√32 not in decimal form?

math
9x0+5-3=42

Math
if x^13 = j and x^12 = 4/9, which of the following is an expression for x in terms of j? a. 9/4 j b. 4/9 j c. 4j d. 9j e. 13j

Math
In a line with slope of 3/2 that passes through the point (4,3), what is the y-intercept? a (-3,0) b (0,-3) c (0,0) d (0,3) e (3,0)

physics
Consider a ball that picks up a speed of 3 m/s each second when its rolls from rest down an inclined plane. If the ball takes 4 seconds to reach the bottom, its speed at the bottom will be?

chemistry
three compounds A,B and C all have the formula C5H8. All three compounds will decolorize bromine in CCl4. Compound A reacts with NaNH2. Compounds A and B both yield pentane when they are treated with excess H2 with the pt catalyst. Under the same conditions C absorbs only 1 ...

sociology
What are some examples of emerging mores related to dating

world cultures

linear equations
What is the solution to the linear system –4x + 2y = –56 and –3x – 6y = 33?Question 3 options: (–9, 10) (–9, –10) (9, 10) (9, –10)

solving systems by elimination
What is the solution to the linear system –4x + 2y = –56 and –3x – 6y = 33?Question 3 options: (–9, 10) (–9, –10) (9, 10) (9, –10)

chemistry
what number of joules needed to turn 325g of water at 100 degree c to steam at 100 degree c

Chemistry
the concentraion is .900 g/L. I'm stuck on the same problem!!

My little brother needs some help on his make up homework. We cant get help until we get back home from visiting family...so all the help we get means a lot! all the paper says : What are the family facts for 3,5, and 8? I don't get it either... thanks

what are the facts of 3,5,8

physics
a kicker kicks a football from the 5 yard line to the 45 yd line ( on the same half of the field). Ignoring air resistance, where along the trajectory is the speed of the football a minimum. what formuls is used and show work a) at the 5 yd line, just after the football leaves...

US History (AP/CC)

US History (AP/CC)
How did the Congress first respond to the unexpected fall of France in 1940? a-revoke to all neutrality laws b-pass a conscription law c-enact a new neutrality law enabling the Allies to buy american war material on a cash and carry basis d-call for the wuaranting of agressor ...

US History (AP/CC)
WWII What caused the Japanese to bomb Pearl Harbor? Like what was their maine reason to get America involved in the war? confused on this question...all the help is appreciated =] thanks!

science
help!!!! leggoosss my hw says - after learning about rocks at joshua tree national park, i am now a great (blank)

Trig
Need hellpp!! If a bicycle has 26 inch diameter wheels and the front “chain”drive has a radius of 2.1 inches and the back drive has a radius of 2.5 inches, how far does the bicycle travel for every one rotation of the cranks (pedals)? Carry out all calculations ...

English
i need to Make up a sentence using the nonsense word fretish as a noun. what does fretish mean???

writing
Sandy called in sick,but she'll be back tomorrow.

Chemistry
I have to draw the compound 3 methyl 1-hexene. This is what I've got: CH CH=CH-CH-CH-CH-CH-CH I know there should be some numbers attached to the CH's, but I dont' know where they should be and what they should be. What are the rules concerning numbers? How do you ...

trig
rules of logarithms: can someone please explain how to do these problems? I understand the rules I just don't understand how they apply 1. e^(3lnx) 2. e^(1+2lnx) thanks!

Trig
Rules of Logarithms: Can someone explain how to do: 1) e^(2(ln)(x)) 2) e^(-lnx) I know the rules I just don't understand how they apply.. thanks!

english
would the verb in this sentence be transitional or intransitional. if transitional, what would be the object? She threw a wonderful celebration.

can you unscramble these letters? ppedoeryre

Science
How much force is there to lift an object?

math
rewrite each pair of fractions using the least common denominator. 20 3 21 7

Science
right, so in other words I would round it . . . . .

Science
Is this correct? work= .01 x mass x distance mass measured in grams distance measured in meters Is this right??

math
one month damien earned \$488 and the next month he earned \$605. estimate the differnce inth amounts damien earned.

math
how do u find probability?

british idioms
are these idioms british? pig in a poke, back to basics, back to square one, to sling one's hook, a baker's dozen, gone for a burton and break one's duck i also have to make some tasks about them..can anyone give my an idea?should i make a quiz or something else ...

british idioms
anything about their origin..eho said them maybe for the first time or something like that.i have the list of ritish idioms but i need some theory http://www.google.com/search?hl=en&sa=X&oi=spell&resnum=0&ct=result&cd=1&q=british+idioms&spell=1 Thank you for using the Jiskha ...

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