Questions Asked on
October 30, 2016

Statistics
you roll two fair dice, a green one and a red one? (a) are the outcomes on the dice independent? (b)Find P(1 on green die and 2 on red die) (c)Find P(2 on green die and 1 on red die) (d)Find P(1 on green die and 2 on red die) or (2 on green die and 1 on
asked by John 
Physics
A pile driver lifts a 450 kg weight and then lets it fall onto the end of a steel pipe that needs to be driven into the ground. A fall of 1.5 m drives the pipe in 45 cm. What is the average force exerted on the pipe?
asked by Alex 
Math
Find the value of x if line QS bisects angle PQR and measure of angle PQR equals 82 degrees. angle PQS=10x+1
asked by Lindsay 
Geometry Help
Triangles DEF and D'E'F' are shown on the coordinate plane below: Triangle DEF and triangle D prime E prime F prime with ordered pairs at D negative 1, 6, at E 1, 3, at F 6, 3, at D prime 6, 1, at E prime 3, negative 1, at F prime 3, negative 6. What
asked by Oscar 
Math
The 6th Term Of A Gp Is2/27 And Its First Term Is 18.What Is The Common Ratio
asked by Schoolboy 
science
HOW MANY ATOMS OF OXYGEN ARE PRESENT IN 8.8G OF CARBON(IV)OXIDE
asked by Vicky 
university physics
An object at rest explodes into three fragments. The figure shows the momentum vectors of two of the fragments: vector P1 is directed along the px axis and has a magnitude of 74.0 kg m/s. vector P2 is at an angle of 300.° measured counterclockwise from
asked by katarina 
Physics
You throw a 5.5 g coin straight down at 4.0 m/s from a 25mhigh bridge. A) How much work does gravity do as the coin falls to the water below? B)What is the speed of the coin just as it hits the water?
asked by Nathan 
Math
Agyapong Is Three Time As Old As Musah.Three Years Ago,he Was Four Times As Old As Musah.How Old Is Each Boy Now?
asked by Bis 
chemistry
Calculate the heats of combustion for the following reactions from the standard enthalpies of formation listed in Appendix 2. (ΔH°f (HgO(s)) = 90.7 kJ/mol and ΔH°f (FeO(s)) = 272 kJ/mol.) (a) 2 Fe(s) + O2(g) 2 FeO(s) kJ (b) 2 CH3OH(l) + 3 O2(g) 2
asked by Dani 
Math
**=answer To adopt a dog from an animal shelter, you must pay $80 for vaccinations, $65 to spay or neuter the dog, and $50 for a wellness exam by a veterinarian. a. Write an expression in simplest form that represents the amount (in dollars) it costs to
asked by Madeline 
maths physics
A particle P, starting from rest at A, moves in a straight line ABCD. It accelerates uniformly at 5ms2 from A to B. From B to C it travels at constant velocity, and from C to D it slows down uniformly at 4ms2, coming to rest at D. Given that AB=10m and
asked by nadun 
Permutations
A 3member executive committee is to be formed from a 11member board of directors. In how many ways can it be formed? 6 170 165 33 990 Please explain this to me. thank you
asked by Kal Jay 
Math
What is the smallest number that can round to 2,000,000 when rounded to the nearest 10,000
asked by Ciara 
math
2 water tanks are being set up.Each one starts with 100 liters of water.The first tank fills at the rate of 15 liters per min.The second tank fills at the rate of 20 liters per min.When will the first tank contain 7/3 as much as the second tank?
asked by iselle 
Englishhelp!
As used in the poem, the phrase "parlor generals" suggests those who (1)lead naturally (2)ignore advice (3)follow carefully (4)avoid participation I chose 4. Am I right?
asked by Ashley 
math
how do you express the side length of a square as a radical, in simplist form, if the area is 252 ft. squared?
asked by natasha 
MS.SUE PLEASE HELP!!!
1.Factor 3/4 out of 3/4z+6. 2.Factor 18x+6y using the GCF. 3.Factor −5 out of −10a−25
asked by Madeline 
Physics
William Tell must split the apple atop his son’s head from a distance of 45.1m. When William aims directly at the apple, the arrow is horizontal. At what angle must he aim it to hit the apple if the arrow travels at a speed of 45.956m/s
asked by Rose 
Algebra One
Find the 20th term for 5,5,15,25
asked by Anonymous 
Calculus AB
Um I don't really understand these word problems so could someone help me please? 1) An object is thrown upward with an initial velocity of 5 m/s from an initial height of 40 m. Find the velocity of the object when it hits the ground. Assume that the
asked by Annie 
Applied chem
What is the molality of a 30.0% by mass hydrochloric acid solution ? The density of the solution is 1.0980g/mol.
asked by Trish 
math
Traffic signs are regulated by the Manual on Uniform Traffic Control Devices (MUTCD). The perimeter of a rectangular traffic sign is 106 inches. Also, its length is 11 inches longer than its width. Find the dimensions of this sign.
asked by nat 
Lang Arts
STORIES OF USEFUL INVENTIONS, excerpt By S. E. Forman 1911 THE MATCH There never was a time when the world was without fire, but there was a time when men did not know how to kindle fire; and after they learned how to kindle one, it was a long, long time
asked by Anonymous 
algebra
The doubling period of a baterial population is 20 20 minutes. At time t = 80 t=80 minutes, the baterial population was 50000. What was the initial population at time t = 0 t=0 ?
asked by tami 
physics
a block B (m2 = 14 kg) is at rest on top of a table. Block B is connected to block A (m1 = 4.8 kg) and block C (m3 = 17 kg) by two strings that each pass over a frictionless pulley installed at the either end of the table. The horizontal surface of the
asked by Amy 
Business mathematics
A sum of money when invested for a definite period at r% simple interest will yield an interest of rm80 .using the same interest rate, find the interest earned if the sum is tripled and the investment period is doubled
asked by Muhammad nur ikhwan 
chemistry
Calculate the heat of decomposition for this process at constant pressure and 25°C. (Look up the standard enthalpy of formation of the reactant and products in the table; ΔH°f(BaCO3(s)) = 1218.8 kJ/mol, ΔH°f (BaO(s)) = 558.2 kJ/mol and ΔH°f
asked by Dani 
physics
The ice skate of a 210pound hockey player is in contact with the ice over a 2.5mm x 15cm area. Determine the freezing point of the ice under the blade of the skate?
asked by Joseph 
Math
A rocket is launched at t=0 seconds. It's height, in feet, above sealevel, as a function of time, t, is given by h(t)=16t2+64t+192 When does the rocket hit the ground after it is launched?
asked by Anthony 
Maths
a bottle is 1/4 full of drink. If 500 ml of drink is added to it the bottle is 2/3 full. How many milliliters does the bottle hold when it's full?
asked by Anonymous 
Science
25cm3 of 0.1mol/dm3 Na2CO3 solution was titrated against 23.45cm3 of H2SO4 acid using phenolphthalein indicator. Calculate the concentration of the acid.
asked by Zainab 
Physics 11 steve or any physics teacher helpURGENT
A 30kg student pushes a 20kg box on a frictionless surface. If student accelerates at 0.80 m/s^2, what is acceleration of the box. My question is why does the box accelerate in opposite direction of the boy, and how does the frictionless surface affect
asked by Brayden Hugo 
Maths
Tamin bought a ticket in a raffle in which 500 tickets were sold. If there are 5 prizes, what is the probability that Tamin does not win a prize?
asked by Stewart 
PHYSICS
A uniform ladder of length 20.0m and weight 750 N is propped up against a smooth vertical wall with its lower end on a rough horizontal surface. The coefficient of friction between the ladder and this horizontal surface is 0.40. (a) Draw a diagram for the
asked by Saphina AlMatary 
Chemistry
Consider the following reaction. 2Fe2O3 > 4Fe+3O2 Hrxn=+824.2 The Formation of 21.0 of Fe results in 1)the release of 77.5 kJ of heat. 2)the absorption of 3.10 × 102 kJ of heat. 3)the release of 4330 kJ of heat. 4)the absorption of 77.5 kJ of heat.
asked by Danny 
Math
Find The Term Of An Ap Whose First Term Is 2 And The Common Difference Is 0.5
asked by Chukwuma 
Physics
A tennis ball, starting from rest at a height h = 2.10 m, rolls down the hill. At the end of the hill the ball becomes airborne, leaving at an angle of 27.0° with respect to the ground. Treat the ball as a thinwalled spherical shell (I = ⅔mr²), and
asked by Bex 
chemistry
Oxygen gas and aqueous benzoic acid react to form carbon dioxide gas and water gas. Determine the mass of water in grams if 5.43×104 milligrams of oxygen reacts with an excess of benzoic acid. I balanced the equation to 2C7H6O2+15O2=14CO2+6H2O
asked by paige 
math bus 105
Calculate (a) interest and maturity value, (b) discount period, (c) bank discount, and (d) proceeds. Assume ordinary interest. (Round answers to nearest hundredths) Date of note Face value Length of note Interest rate Bank discount rate Date of discount
asked by christina 
Chemistry
how many grams of pure uranium can theoretically be extracted from 10.0kg sample of pitchblende which is 92.0%uo2
asked by Tamo 
math
if the of musician in a fanfare is between 21 and 49. which way does the musician have to stand to form the biggest number of rectangle
asked by bob 
Math
Solve each inequality and express the solution set in interval notation. a. 3 < (x3)/2 < 5 b. 5 ≥ (x+2)/3 > 1 ans.: (a)(9,3) (7,13) (b) [17,13] (1,5)
asked by NR 
chemistry
what is the name of this coordination compound [CoSO4(NH3)5]Br? my attempt: cobaltsulfatepentaamine Bromine
asked by chemi 
math
We are learning about the empirical rule  is that the same thing as the bell curve?
asked by Carly 
Chemistry
How can I draw a lewis dot structure of XeF2O?
asked by Joseoh 
PHYSICS URGENT URGENT URGENT URGENT HELP NEEDED!!!
A uniform ladder of length 20.0m and weight 750 N is propped up against a smooth vertical wall with its lower end on a rough horizontal surface. The coefficient of friction between the ladder and this horizontal surface is 0.40. (b) Work out and add the
asked by Valentina 
PreCalc
What is the average rate of change of the function f, given by f(x) = x2 + 1, on the interval [2,5]?
asked by cool 
math
Toya has 40 tens write how many hundreds
asked by toy 
Science
What is the difference between xylem and phloem?
asked by Radiah 
PHYICS URGENT URGENT PLEASE PLEASE PLEASE HELP ME!
A uniform ladder of length 20.0m and weight 750 N is propped up against a smooth vertical wall with its lower end on a rough horizontal surface. The coefficient of friction between the ladder and this horizontal surface is 0.40. (b) Work out and add the
asked by Valentina 
math
An elementary school is offering 3 language classes: one in Spanish, one in French, and one in German. These classes are open to any of the 93 students in the school. There are 35 in the Spanish class, 31 in the French class, and 22 in the German class.
asked by Amber 
Statistics
Three final candidates (Alex, Bo, and Chris) for a position happen to take different versions of the aptitude test. You are supposed to choose the one who performed best out of these three final candidates and the test results are as follows: Alex received
asked by Lacy 
acct
The Supplies account had a balance of $4,800 at the beginning of the month and $6,400 at the end of the month. The cost of supplies purchased during the month was $15,600. Calculate the cost of supplies used during the month. The cost of supplies is
asked by chantel 
Math
Write a realworld problem where you would have to multiply 120 and 75
asked by Shahrizoda 
English
What is one of the strongest literary images in "Spring is like a perhaps hand" by E.E. Cummings?
asked by Just a confused person... 
Math
7×5
asked by Lana 
Chemistry
Suppose a student diluted and titrated a bleach unknown exactly as described in the experimental procedure, except only a single titration was performed which required 12.62 mL of 0.100 M Na_{2}S_{2}O_{3} Calculate the number of moles of ClO in the sample
asked by Linda 
engineering
During drilling of a deep oil well, the drill pipe got rigidly stuck. It was necessary to determine the depth at which the jamming occurred. The engineer ordered the pipe subjected to a large upwards tensile force, i.e., she pulled on it. As a result, the
asked by Anonymous 
Math
1. Solve each inequality and express the solution set in interval notation. a. 3 < (x3)/2 < 5 b. 5 ≥ (x+2)/3 > 1 2. 4 < 2x8 ≤ 10 ans.: (a)(9,3) (7,13) (b) [17,13] (1,5) 2. (6,9]
asked by NR 
math
gas tank is 1/6 full. after pumping 9 gallons gas it is 5/6 full. how much gas does tank hold? How many gallons were first in the tank?
asked by ellie 
Math (Continuous/Differentiable)
goo.gl/photos/2RPU1dAWoKzUn4Pf8 1. Which of the above functions are not continuous where they are defined? Why? 2. Which of the above functions are not differentiable where they are defined? Why? For the first question, I said that graph F is not
asked by Ray 
Calculus AB
Sorry but I've got a lot of problems that I don't understand. 1) Let f(x)= (3x1)e^x. For which value of x is the slope of the tangent line to f positive? Negative? Zero? 2) Find an equation of the tangent line to the oven curve at the specified point.
asked by Annie 
Math
A restaurant can seat 100 people. It has booths that can seat 4 people and tables that can seat 6 people. So far, 5 of the booths are full. What expression matches the situation?
asked by FM 
English
What is one of the strongest literary images in "Orphans Give Indian Couple Will to Live; 2004 Tsunami Killed Their Son, Two Daughters" by Shaikh Azizur Rahman?
asked by Just a confused person... 
Math
Solve the system by the addition method. −5x+7y=4 4x−y=−17
asked by Gabby 
Algebra
Cindy bought a car for $14000. The car is depreciating every year at a rate of 2%. Write an equation and what is the value of her car after 5 years.
asked by Sam 
Social studies
What are the causes of contemporary social problems
asked by Anonymous 
physics
quarterback throws a pass to a receiver, who catches it at the same height as the pass us thrown, The initial velocity of the ball is 15.0 m/s, at an angle of 25.0 degrees above the horizontal. How long is the ball in the air?
asked by matt 
Math
What is 5.6 x 10 to third power?
asked by Lu 
Chemistry
A 2.35 g sample of a substance suspected of being pure gold is warmed to 72.2 ∘C and submerged into 15.5 g of water initially at 24.1 ∘C. The final temperature of the mixture is 26.5 ∘C. Part A What is the heat capacity of the unknown substance? Part
asked by Jo n 
History
I'm doing a project for the Republic of Congo (Not the Democratic) and I have to find a holiday celebrated there and explain and name one food eaten on that holiday I chose National Youth Day but I cant find a specific food they eat on that day. Can anyone
asked by Anonymous 
chemistry
Ethanol (C2H5OH) and gasoline (assumed to be all octane, C8H18) are both used as automobile fuel. If gasoline is selling for $1.45/gal, what would the price of ethanol have to be in order to provide the same amount of heat per dollar? The density and
asked by Dani 
Physics
Person sits on a frictionless stool that is free to try ate but is initially at rest. The person is holding a bicycle wheel (I = 3 kg*m2) that is rotating at 8 Ree/s in a clockwise direction as viewed from above, and the moment of inertia of the
asked by Lester 
chemistry
When performing an extraction, is it better to have a higher or lower K (distribution coeffictient/ partition coefficient) value? Explain.
asked by Chem 
maths
4/9 of a group of students are girls , if there are 17 more boys than girls . how many students are there alltogther
asked by priyanka 
Accounting
AJNB Company purchased equipment costing 500,000 paying 20% down payment with the balance paid by the issuance of promissory note
asked by Normie Escalante 
Math 107
A right circular cylinder with height 25 and base radius 8 solve for A=
asked by Lonzie 
chemistry
Calculate the work done (in joules) when 5.0 mole of water is frozen at 0°C and 1.0 atm. The volumes of five moles of water and ice at 0°C are 0.0900 L and 0.0980 L, respectively.
asked by Dani 
Accounting
On December 1,2016, AJNB Company commences its operation. The following transactions occured for the month of December 2016. a.) Dec.1 The owner invests 1,000,000 to start the operation of the business b.) Dec.1 Paid rent in advance for 180,000 c.) Dec.1
asked by Normie Escalante 
math
The marked price of a T.V set is sh 20000. A 20% discount is allowed when buying the T.V. on cash. On hire purchase terms, only 12 monthly installments of sh 2000 each is paid. How much more does it cost to buy the T.V. set on hire purchase terms than
asked by kgk 
math
Given A={1,2,3} and B={2,{3}}. Determine whether each of the following statements is TRUE or FALSE. a) ∅ C B b) B C A c) {3} C A d) {2,3} C A e) {2,{3}} ∈ P(B) f)  P(B)  = 4 g) {0,1} c A
asked by roze 
chemistry
The ice skate of a 210pound hockey player is in contact with the ice over a 2.5mm x 15cm area. Determine the freezing point of the ice under the blade of the skate?
asked by Joseph 
ECONOMICS
A REPORT ON WHY THE GOVERNMENT OWNS AND CONTROLS ONLY 30% OF THE RESOURCES IN MIXED ECONOMIC SYSTEM
asked by NELSON 
math Set
Given A={1,2,3} and B={2,{3}}. Determine whether each of the following statements is TRUE or FALSE. a) ∅ C B b) B C A c) {3} C A d) {2,3} C A e) {2,{3}} ∈ P(B) f)  P(B)=4 g) {0,1} c A
asked by roze 
Quick Physics Question
Are both linear and angular momentum conserved in static equilibrium ?
asked by Tom 
Finance 300
Suppose a stock had an initial price of $94 per share, paid a dividend of $2.50 per share during the year, and had an ending share price of $76.50.
asked by Anonymous 
Physics
Which are in static equilibrium? 1. A box sliding down a ramp. 2. A baseball after being hit. 3. A box sliding along a horizontal surface. 4. A perfectly upright freely spinning top 5. A freely swinging simple pendulum 6. A spinning astronaut floating out
asked by Jerry 
Algebra
Henry's mother is three times as old as he is. His grandmother is 35 years older than his mother. If Henry's grandmother was 7 years younger, she would be 5 times as old as Henry. How old is Henry's grandmother?
asked by Kloe 
math
it took you 30 minutes to read 5 pages of a book if you continued reading at the same rate how long will it take you to read 22 pages
asked by czv dfdg 
DISCRETE MATH
Determine whether the following is a recursive or explicit. Then, find the first four terms of the following sequence. a) a_n = 〖na〗_(n1) where a_0 =5 b) a_n = a_(n1) + 3a_(n2) where a_0 = 1 and a_1 =2 c) a_n = 2^n + 5•3^n for n=0,1,2,3
asked by roze 
Calculus AB
Could someone please help me with this? Calculate the instantaneous rate of change of f at x=6.
asked by Annie 
algebra 2
Reuben deposited $2000 into an account with a 3.8% annual interest rate, compounded semiannually. Assuming that no withdrawals are made, how long will it take for the investment to grow to $3000?
asked by . 
3rd grade Math
Allie was making a cookie recipe that called for 30 chocolate chips. She wants to make 2 batches of cookies. How many chocolate chips does she need? 1 group = 30 30+30=60 or 2x30=60 ?
asked by Shay 
Physics
A uniform ladder of length 20.0m and weight 750 N is propped up against a smooth vertical wall with its lower end on a rough horizontal surface. The coefficient of friction between the ladder and this horizontal surface is 0.40. (a) Draw a diagram for the
asked by urgent help needed 
Math
A teacher tallies up the grades on a math test in a class of 34 students, the results are A1, B11, C16, D3, F1. What is the empirical probability of a student getting a C? Express as a fraction.
asked by Veronica 
Maths
A swimming pool is being emptied and the amount of water remaining in the pool after t minutes after emoting commences is given by: Time t (min) Volume V (L) 0 30000 20 28800 40 25200 60 19200 80 10800 Find the equation describing the volume of water
asked by Amelia 
US History
If you have a map of 19th century US and the names of the states are changed to Irish names, ie: Irish Sea , Mulligan, etc. And the question was to compare the map to a typical US map, would you answer with just explaining the obvious changes, or is there
asked by lulu 
Physics
A soccer play kicks the ball toward a goal that is 29m in front of him. The ball leaves his foot at a speed of 19m/s and at an angle of 32degrees above the ground. Find the speed of the ball when the goalie catches it in front of the net. my work: vxi=16.1
asked by Morgan 
math
Daniel is now six times as old as Mabel in twelve years time Daniel will be two times as old as Mabel .how old are they
asked by Daniel 
math
Given A={1,2,3} and B={2,{3}}. Determine whether each of the following statements is TRUE or FALSE. a) ∅ C B b) B C A c) {3} C A d) {2,3} C A e) {2,{3}} ∈ P(B) f)  P(B)  = 4 g) {0,1} c A
asked by roze 
Math
What do you double and subtract 4 to get 24
asked by Iestyn 
physics
A uniform ladder of length 20.0m and weight 750 N is propped up against a smooth vertical wall with its lower end on a rough horizontal surface. The coefficient of friction between the ladder and this horizontal surface is 0.40. (b) Work out and add the
asked by Michael 
math
when one third of a number is subtracted from 2 times the number then the answer is 15? what is teh number
asked by I suck at math 
maths
Awoman walks 4km east and then 8km north use the polygon method to find her resultant fisplacement
asked by abdirahman 
physics
Find the x and y components of A displacement 200km at 34
asked by abdirahman 
Physics
A uniform ladder of length 20.0m and weight 750 N is propped up against a smooth vertical wall with its lower end on a rough horizontal surface. The coefficient of friction between the ladder and this horizontal surface is 0.40. (a) Draw a diagram for the
asked by still don't understand; please help 
physics
An object is projected vertically in "V" velocity.After "T" time, another object is projected at the same place in same velocity("V").Find the velocities of stones when they meets.
asked by MAS 
Math
The first number is the price of 1 ounce of soda if 64 ounces cost $1.92
asked by Grace 
Soail STuddies
Why was agriculture important and lifechanging for Ancient Egyptians?
asked by Anonymous 
Algebra
Amy bought 18 stamps. Some were for postcards and cost 35 cents. The others were for regular mail and cost 49 cents. She spent $7.28 on the stamps. How many of each did she buy?
asked by Maggie 
computer
the physical comonents of a computer are called software
asked by khadija 
Calc.
A rectangular plot of land is to be fenced in using two kinds of fencing. Two opposite sides will use heavyduty fencing selling for $7 a foot, while the remaining two sides will use standard fencing selling for $2 a foot. What are the dimensions of the
asked by kayso 
computer
the computer system grade 6
asked by khadija 
English
1. I ought to go by plane, shouldn't I? 2. I ought to go by plane, oughtn't I?  Which tag question is right?
asked by rfvv 
Gaussian Elimination Method
zdb=200 z +2b=250 b=150
asked by lAURIE 
Calculus differentiable and continous identify
1. Which of the above functions are not continuous where they are defined? Why? 2. Which of the above functions are not differentiable where they are defined? Why? Photo Link: goo.gl/photos/2RPU1dAWoKzUn4Pf8 For the first question, I said that graph F is
asked by Ray 
calculus
indefinite integral : (sqrt(V^2sin^2(2pi/T*t))) dt
asked by byu 
PHYSICS
A perfect gas at 415 degree centigrade. The volume remains constant at 20 cubic meters and pressure of 1750 Gauge. Calculate the final value of V2 AND T2
asked by Muhammad 
Math
BOOKBINDING Two square sheets of cardboard used for making book covers differ in area by 44 inches. An edge of the larger square is 2 inches greater than an edge of the smaller square. Find the length of an edge of the smaller square. My answer: Let x be
asked by Trina 
HCC
A manufacturer of hospital supplies has a uniform annual demand for 80,000 boxes of bandages. It costs $10 to store one box of bandages for one year and $160 to set up the plant for prduction. Haw many times a year should the company produce boxes of
asked by alex 
math
the symbols that stands for amounts are called what? numbers, digits, numerals, shapes
asked by Britt 
chemistry
Calculate the freezing point of water at a depth of 10.0 cm below the surface of the water. The density of the water is 0.9998 g/cm3.
asked by Joseph 
Physics 11 urgent Steve, bob, damon pls
A 30 kg student pushes a 20kg box on frictionless surface. If student accelerates at 0.8m/s^2(N),what is acceleration of bix. now why does the box acceerate towards south, if it is being pushed north should it not move north.
asked by IZAAK SiDney Dunkan 
physics
Calculate the freezing point of water at a depth of 10.0 cm below the surface of the water. The density of the water is 0.9998 g/cm3.
asked by Joseph 
Statistics
Please help me with this homework you roll two fair dice, a green one and a red one? (a) are the outcomes on the dice independent? (b)Find P(1 on green die and 2 on red die) (c)Find P(2 on green die and 1 on red die) (d)Find P(1 on green die and 2 on red
asked by Mary 
Physics
A concave, spherical mirror and a thin, converging lens are both measured in air (n=1.0) to have the same focal length, ff. Both the mirror and the lens are then placed under water (n=1.33) and their focal lengths are measured again. For both the mirror
asked by Urgent Help Needed Please!!! 
Physics (for Damon)
Given the following about a spring: mass = 20.0 kg height initial = 5.25 m (above the ground) height final = 2.17 m (above the ground with the mass attached) delta y initial = 0.00 m I have found the following: Spring constant: 63.7N It would take 576J to
asked by George 
PreCalculus
Why do we need to use the sum/difference formulas to find exact values? Please explain.
asked by KW 
Math
Solve each equation. (y1)(y+6)=(y3)(y2)+8
asked by shea 
math
1. ¨C9x ¨C 5 = ¨C95 a. 17 b. 11 c. 10 *** d. ¨C10 2. w over four ¨C 4 = 3 a. ¨C4 b. 28 *** c. 3 d. 11 3. d over three + 10 = 7 a. 51 b. 20 c. 0 d. ¨C9 *** 4. 2(2 ¨C 2x) = ¨C3x a.¨C4 b. 4 *** c. 6 d. 0 5. 2.9n + 1.7 = 3.5 + 2.3n a. 3 *** b. ¨C3
asked by EmberShy 
Mathematics
Yumi's grandparents presented her with a gift of $12,000 when she was 10 yr old to be used for her college education. Over the next 7 yr, until she turned 17, Yumi's parents had invested her money in a taxfree account that had yielded interest at the rate
asked by Dominique 
Social studies
Compare the tactics used by the french troops in the French and Indian War with those of the American patriots during the revolution.
asked by Please help 
Chemistry
Does group 18 elements like He, Ne, Ar, Kr soluble in organic solvents?
asked by Husler 
English
When buck joins the wolfpack after thornton's death, it is part of which plot element in the call of the wild? A. conflict B. exposition C. resolution D. rising action A. is my best answer
asked by Leslie 
Algebra II
(34yi)(6+7i)[(23yi)3(1+7i)] Express it in a+bi form I got 19+42i21yi+28y but I do not know how to express it in a+bi form, can you please help me with it?
asked by Kris 
Social Studies
Why did Thomas Paine write the pamphlet, common sense?
asked by Please help 
Math
Solve: 6i/i
asked by Aria 
physics
a point charge placed at the origin. Calculate eletric field at a point 2.0m from the Z axis.
asked by alisha ahmed 
Physics
Six dogs pull a twoperson sled with a total mass of 280 kg. The coefficient of kinetic friction between the sled and the snow is 0.080. The sled accelerates at 0.65 m/s2 until it reaches a cruising speed of 15 km/h. What is the team's maximum power output
asked by Alex 
Physics
A uniform ladder of length 20.0m and weight 750 N is propped up against a smooth vertical wall with its lower end on a rough horizontal surface. The coefficient of friction between the ladder and this horizontal surface is 0.40. (b) Work out and add the
asked by Michael 
Mathematics
Yumi's grandparents presented her with a gift of $12,000 when she was 10 yr old to be used for her college education. Over the next 7 yr, until she turned 17, Yumi's parents had invested her money in a taxfree account that had yielded interest at the rate
asked by Dominique 
Physics
You must arrange three mystical stones in a line. They have masses 10.0 kg, 7.00 kg,and 3.00 kg. You place the 7.00 kg and 3.00 kg stones 5.00 m apart. Where do you need to place the 10.0 kg stone for the center of mass of the three stones to be 2.25 m
asked by Rick 
World history
Which of the following is one of the notable achievements of early China ? How did the Zhou dynasty come to rule a large part of China ? In what way did China isolated geography contribute to it's development as a country In both the shang & Zhou societies
asked by Tyrone gattis 
Chemistry
Which one of the following is NOT a physical process? A. Dry ice subliming B. Steam condensing C. Alcohol evaporating D. Melting ice E. Gold plating jewelry
asked by Anjali 
Physics
a bullet fired at a wooden block of thickness 0.15m manages to penetrate the block. if the mass of the bullet is 0.025kg and average resisting force of the wood is 7x 10^3 N , Calculate the sppeed of the bullet just before it hits the wood block
asked by busola 
Math
Find The 19th Term Of The Ap 5/6,8/6,11/6
asked by King 
math
Equation: x^2+y^2 =2x +4y. Given that dy/dt =6, ﬁnd dx/dt when (x,y) = (1+√2,2+√3).
asked by tish 
Chemistry
What ionic compound, is the primary source of a chicken's egg? I think it is calcium carbonate? If it is thought what is the logical/ explanation behind it can someone please explain this to me. Btw what would be the chemical equations for an egg being
asked by Holfbrincl PLEASE HELP 
MATH PLEASE HELP!!!
1.Factor 3/4 out of 3/4z+6. 2.Factor 18x+6y using the GCF. 3.Factor −5 out of −10a−25.
asked by Madeline 
Math
Write an algebraic expression for 4 less than the product of 2 and a number. 4(2a)
asked by Hayden 
Math
The point C(4 , 2 ) , D(2,1) and E(1,1) are translated onto C' and D' and E' by the vector find the coordinates of C' D' and E'
asked by Karla 
Physics
An Olympic long jumper is capable of jumping 8.44m. Assuming his horizontal speed is 5.644m/s as he leaves the ground, how high does he go?
asked by Liv 
Math Grade 9
A rectangular yard with an area of 50m squared is to be fenced on three sides. Minimizing the perimeter will minimize the cost of the fence. Conduct an investigation to determine the shape 0f the yard with the minium perimeter. I sqaure rooted the 50m and
asked by I need help please! 
Chemistry
Consider an ionic compound, MX2, composed of generic metal M and generic, gaseous halogen X. The enthalpy of formation of MX2 is ΔHf° = –799 kJ/mol. The enthalpy of sublimation of M is ΔHsub = 157 kJ/mol. The first and second ionization energies of M
asked by Joseoh