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Posts by Kiki

Total # Posts: 564

math
can you please help me 8+7r^3/2t^4r

ALGERBRA,PLEASE HELP!!!!!!
noooooooooooooooooooooooooooo Its actually C,B,D,C 100% it's this ^^

DBU
The mean time to complete a psychology exam is 34 minutes with a standard deviation of 8 minutes. Assume the distribution is normal. Find the probability of a student taking less than 28 minutes.

math
Suppose f is a linear function such that f(1) = -1 and f(3)=2. Then f(4)=?

math
when 3a squared minus 7a plus 6 is subtracted from 4 a squared minus 3a plus 4 is? please help

math
please help me if x over 4 minus a over b is equal to 0 b is not equal to 0, then x equals what? thanks

math
no it is not zero, but thanks

math
if x over 4 minus a over b is equal to 0 b is not equal to 0, then x equals what? thanks

math
please help me if x over 4 minus a over b is equal to 0 b is not equal to 0, then x equals what? thanks

math
2 over x minus 3 is equal to 26 over x what is x? can u please help me

math
can u please help me 7r-(6r-5)= 7 thank u

math
cn you please help me a problem states that the sum of two numbers is 27. The numbers can be represented by x and 27-x. Is it possible to determine which is the larger number and which is the smller number. explain Thank u

math
what is the difference between the two expressions below: -4squared (-4)squared can you please help, thank u

math
Allison says that every interger is a counting number. is she correct and explain Please help, thank u

math
the ratio is the ratio of the length of red ribbon too blue ribbon

math
can u please help me a printig shop charges a 75-cent minimum for the first 8 photocopies of a flyer. additional copies cost 6 cents each. represent the cost of c copies if c is greater than 8. thank u

math
can you please help me represent the total nummber of calories in x peanuts and y potato chips if each peanut contains 6 calories and each potato chip contain 14 calories. thank u

math
can u please help me. represent the total number of days in w weeks and 5 days represent the total number of days in w weeks and d days thank you

math
can you please help. If a plane travels 550 kilometers per hour, represent the distance it will travel in h hours. thank you

math
Can u please help. The width of a rectangle is represented by w meters. Represent the length of the rectangle if it exceeds the width by 8 meters. Thank you

math
a hot air balloon leaves the ground to 170 feet. if it then climbs an additional 80 feet. How far above the ground is the balloon?

Physics
In a scene in an action movie, a stuntman jumps from the topof one building to the top of another building 4.0m away. After arunning start, he leaps at a velocity of 5.0m/s at an angle of 15degrees with respect to the flat roof. Will he make it to the otherroof, which is 2.5m ...

algebra
Parking in a student lot costs$1 for the first half hour and $1.75 for each hour thereafter. A partial hour is charged the same as full hour. What is the longest time that a student can park in this lot for $8?

Geometry
Find the geometric mean between 6x and 24x. A.)4 B.)12 C.)12x

Geometry
x/(x + 9)=5/8. Find x. A.)12 B.)9 C.)15

Geometry
To find the height of a tree, a man stands at point T. His height RT=6 ft. He stands 15 feet from point S and 25 feet from point U. What is the height of the tree, QU? A.)12 ft B.)15 ft C.)16 ft

Geometry
Triangle I has sides with lengths 2 2/3 cm, 4 1/2 cm and 3 cm. Triangle II has sides with lengths 8 cm, 13 1/2 cm and 9 cm. Are these triangles similar? If yes, what is the ratio of correspondence? A.)Yes;1/3 B.)No C.)Yes;2/3

Geometry
What is the equation for the circle with its center at C(5,-2), and a radius with length 7? A.)(x - 5)2 + (y + 2)2 = 49 B.)(x - 1) - (y + 4) = 36 C.)y = 7x - 2

Geometry
What is the center and radius of the circle with the following equation: (x - 4)2 + (y + 3)2 = 100 A.)c=(2,0),r=1 B.)c=(4,-3),r=10 C.)c=(2,2),r=5

Geometry
Earth has a radius of about 12,500 km. If the volume of the earth were to remain the same, but the shape of the earth was a cube, what would be the approximate length of one side of the cube? A.)12,500 km B.)15,240 km C.)20,150 km

Finance
a company is offering the US Government's 8.5% 2020 treasury bond for "150.266" . What is the price in dollars of the bond?

English IV
AS a Naive allegory, "Everyman":

math
Frank cut a pie into 10 equal slices. There are only 3slices left. What is the measure of the angle for the 3 slices that are left?

Math
Maria cut a pizza into 8 equal slices. She put a slice of pizza on 3 plates. What is the measure of the angle for the slices that are left?

Child Day Care
10. How would an authoritative caregiver most likely solve the problem between Carlos and Thomas? A. Help Carlos to refill his bucket. B. Ask Carlos if Thomas can play too. C. Ignore the situation and let the boys resolve it. D. Tell Thomas he was bad to knock over the bucket ...

math
i remeber it as Please Excuse My Dear Aunt Sally Please/P = Parenthesis Excuse/E = Exponents My/M = Multiplication Dear/D = divide Aunt/A = addition Sally/S = subtraction

math
but the answer choices on my homework sheet said A)178 B)278 C)290 D)390 there is no 6.953!!!

math
PLEASE

math
may some one please help me with this complicated question???PLEASE

math
solve the equation,(112 - 38) x 14 divided by 7 + 142

math
A seismograph 300 km from the epicenter of an earthquake recorded a maximum amplitude of 5.2 102 µm. Find this earthquake's magnitude on the Richter scale. (Round your answer to the nearest tenth.) M =

math,(fraction)
Girls= 2/5*25= 10 Boys = 3/5*25= 15 All books= 135 books 135÷3= 45÷15= 3*3 = 9 books

Physical Chemistry
Substitute U = uV and P = (1/3)u into the equation (ðU/ðV)T = T(ðP/ðT)V – P to show that it leads to du/u=4(dT/T). *NOTE: u depends only on T*

psychology
What are the effects of type of processing and channel of presentation on recall of words? HELP!!!!!!!!!!!

algebra2
3+√3^2-4*(-1)*7. Divide by 2 after

physics
Two asteroids, each with a mass of 6 million kilograms are attracted gravitationally with a force of 0.75 N. How far apart are their centers?

physics
A 1400kg car starts at rest and rolls down a hill from a height of 12m. (a) how much kinetic energy does the car have at the bottom of the hill?(b) how fast is the car going at the bottom of the hill? Can someone explain how to do it!

physics
can someone explain how to do this step by step i already have the answer but i need to know how to do it!! the answer is (a)6.67m/s (b)111km/s^2 The muzzle velocity of 50g shell leaving a 3kg rifle 400m/s(a)What is the recoil velocity of the rifle?(b)If the bullet travel 72cm...

Computer Club Ideas (please read)
to make animation well there anime studio and you can make your drawing in photo shop there premiere to make videos that's all but idk if there free...

physics
thank you !!:)

physics
can someone explain how to do this? The muzzle velocity of 60g bullet leaving 4kg rifle is 500 m/s towards the east. What is recoil velocity of the rifle?

Algebra 2
x-7

algebra/trig help please
yes

algebra
4/3*4^3 85.3

math
suppose a bag contains three orange marbles and two blue marbles. you are to choose a marble, return it to the bag, and then choose again and suppose you do this 50 times what is chance of getting 2 marbles of the same color.

CHEMISTRY
Explain, in terms of particles, concentration, and reaction rate, what you expect to happen when methane gas (CH4) and hydrogen sulfide gas (H2S) are sealed in a flask and reach a state of equilibrium. CH4 (g) +2 H2S (g) --><--- CS2 (g) + 4 H2 (g)

Calculus
thank you! but how did you go from......(1/u)*2sinx*cosx....to......sin(2x)/[sin^2x+3].............? i was just confused by this..thanks

Calculus
Hi! I am having trouble figuring out the derivative of ln[sin^2(x)+3]........... If it weren't for the "3" I know I could just "move" the exponent of 2 from sin^2 to in front of the ln,....but because of the 3 I can't do this....So what should I do...

Composition and Communication
Identify three key strategies to ensure you will choose words correctly in the future to improve your writing.

physics
Work is done when: a force is applied or an object OR a force causes an object to move

science
Work is done when a force is applied or an object OR a force causes an object to move I think the second one.

grammar
is living room a noun?

french
Does this make sense? Is there anything I should change to make it betetr, or sentences to add to it? Thank-you very much! Bonjour! Je m’appelle Kiki et je suis la fille de votre cousine, Viv! J’habite en Nouvelle Zélande et j’apprends le français...

5th grade math
46.93

5th grade math
65427.900

social studies
in what way do natural resources help to provide jobs?

geometry
in what way do natural resources help to provide jobs?

9th grade
how are you suppose to respond to ¿quién es ella? the formal way in spanish?

Math
Make up a set of at least 12 numbers that have the following landmarks maximum 18 range 13 mode 7 and median 12

math
subtract -5x-2X+8 FROM -2X+9X

art
find a image for near east and the date/time of the image and material used and used for and symbolism

math
the lowest temperature on a winter morning was -9f later that same day the temperature reached a high of 24 by how many degrees fahrenheit did the temperature increase

math
thank u

4th grade
=180,000,000,000

immig.
after i got the citizenship ,how long will it take to get my wife parmanent residence,

Immigration
i have a permanent residence ,i want to apply for my wife,how long will it take?

Physical Science, ipc
b

college
The results from an independent-measures research study are being used to estimate how much difference there is between two treatments. If the study used a total of n = 10 participants, then the t values for a 90% confidence interval would be __________.

algrbra/trigonometry
this is wrong.

math
A polyhedron has 15 vertices and 31 edges. How many faces does it have?

math-PLEASE HELP
Answer the following questions to determine why Euler’s formula continues to hold for the polyhedron formed by cutting corners off of an octahedron, : a. For an octahedron V = , ____,F = ____, and E = _____. b. When you slice off one corner of the octahedron, you (gain or...

apchemistry
thank you for your help before---also, what can i react with BaO to get some noticable consequence---how can i show that what MgO was involved in the reaction?

APChemistry
Thank you for your help! I just had a question.. is BaO barium oxide a precipitate? or if I combine MgO with Ba(NO3), will I get BaO and is this a solid?

APCHemistry
Hi these are the posts from earlier---i just had a quetsion about your response: ""Apchemistry - DrBob222, Monday, April 26, 2010 at 7:10pm Your thinking is ok. All ionic solids, although composed of ions, are locked into place by the crystal lattice structure of the...

Apchemistry
ohh so conductivity has more to do with ions that carry charge, rather than electrons carrying charge???

Apchemistry
Thank you for your help Why is solid copper (I) nitrate a poor conductor? I know that CuNO3 is an ionic solid, so maybe (please check me on this) the electrons in CuNO3 are exchanged in the formation of electrostatic attractions found within ionic solids, so the electrons ...

math-please help!
The number of complaints received by a business bureau can be represented by the following probability distribution. Find the expected number of complaints per day. complaints per day -0,1,2,3,4,5 probability-0.01,0.11,0.26,0.28,0.19,0.12 can someone please help me figure out ...

math-help
what is the formula to find the distance of a cube with three sides that are measured at 6 each.....

math-please help!
Use the properties of lines to parallel solve the problem. If p ðF q and mÚ8 = 52‹, what are the measures of the other angles?

math-please help!
Determine whether the situation calls for a discrete or continuous random variable. The number of freshmen in the required course, English 101 The braking time of a car I think the first one discrete and the second is continous is this correct?

math
Determine whether the situation calls for a discrete or continuous random variable. The number of freshmen in the required course, English 101 The braking time of a car I think the first one discrete and the second is continous is this correct?

math-please help
If a two-card hand is dealt from a well-shuffled deck of 52 cards, what is the probability that the hand contains two kings?

math
When a single card is drawn from an ordinary 52-card deck, find the odds in favor of getting a red 10 or a black 6. I think the answer is 1:12. Is that correct?

apchemistry
thank you but i do not see the post you posted to my answer...

apchemistry
How do you seprate a homogenous mixtre of 2 volatile liquids?

apchem PLease Answer
What is the equation for HOCl dissolves in HOH? I don't get it...

APChemistry
So if I can't assume that, then how can I calclate pH? I don't know K value, so I can't use Henderson Hasselbalc...

APChemistry
If you have CL2 + H2o ---> H+ + Cl- + HOCl and you are given [HOCl] = 0.06 M and you have to find pH.... can you assume that [HOCl] =[H+] = 0.06 M since H+ and HOCl both have a coefficient of 1? Thank you

APChemistry
If you have CL2 + H2o ---> H+ + Cl- + HOCl and you are given [HOCl] = 0.06 M and you have to find pH.... can you assume that [HOCl] =[H+] = 0.06 M since H+ and HOCl both have a coefficient of 1? Thank you

APChemistry
So if I can't assume that, then how can I calclate pH? I don't know K value, so I can't use Henderson Hasselbalc...

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