Questions Asked on
April 1, 2013

Chemistry
Write a chemical equation representing the second ionization energy for lithium. use e as the symbol for an electron.
asked by anonymous 
calculus
Consider a window the shape of which is a rectangle of height h surmounted by a triangle having a height T that is 1.1 times the width w of the rectangle If the crosssectional area is A, determine the dimensions of the window which minimize the perimeter.
asked by sam 
Physicsfriction problem
A 0.170 kg hockey puck is initially moving at 21.2 m/s [W] along the ice. The coefficient of kinetic friction for the puck and the ice is 0.005. (a) What is the speed of the puck after traveling 58.5 m? my solution: Fnet=Fk ma=μk.Fn ma=μk.mg
asked by LG 
Chemistry
Calculate the standard freeenergy change for the following reaction at 25 C degrees. 2Au^3+(aq)+3Ni(s) 2Au(s)+3Ni^2+(aq) Ni2+(aq) + 2e > Ni(s) E=0.26 Au3+(aq) + 3e > Au(s) E=+1.498 G= ? KJ Would it be G=1.758? •Chemistry  DrBob222, Sunday, March
asked by Anon 
Chemistry
Use Coulomb's Law to calculate the energy of a copper ion and an oxide ion at their equilibrium ionpair separation distance. Cu^2+ radius(pm)= 77 O^2 radius (pm)=140 answer in aJ
asked by anonymous 
Chemistry
For a particular redox reaction NO2– is oxidized to NO3– and Cu2 is reduced to Cu . Complete and balance the equation for this reaction in basic solution. Phases are optional.
asked by Connor 
chemistry
Use the molar volume to find the volume, in liters, of 6.40g of O2 at STP.
asked by kate 
math
One ordering of the letters T, U, V and Wfrom left to rightis UTVW. What is the total number of orderings of these letters from left to right, including UTVW?
asked by naomie 
Chemistry
Here are the effective nuclear charges, Zeff, for the valence electrons of four different atoms. 1.30, 1.95, 2.60, 3.25 In order, these values could belong to what list of elements? Sr, Ca, Mg, Be Be, Mg, Ca, Sr C, B, Be, Li (or) Li, Be, B, C Here are the
asked by marie darling 
Chemistry
H2C2O4.2H2O(s) is primary standard substance. 2.3688g of oxalic acid hydrate were completely neutralized by 42.56ml of NaOH solution. Calculate the molar concentration of the NaOH solution. Write the balanced equation for the reaction.
asked by Sean 
PreAlgebra
How many different ways can you choose 3 frozen yogurt toppings from 20? 6,840 1,140 60* 2,260 I think it is 60 because 3*20 however not positive.
asked by Kate 
Chemistry
If 3.21 mol of a gas occupies 56.2 L at 44*C and 793 torr, 5.29 mol of this gas occupies __________ L under these conditions. . How will I solve this using PV= nRT? I tried using PV= nRT. By just plugging in the value and got 131 but the answer is around
asked by Shadow 
Physics
A combination lock has a 1.2 cm diameter knob that is part of the dial you turn to unlock the lock. To turn that knob, you grip it between your thumb and forefinger with a force of 0.62 N as you twist your wrist. Suppose the coefficient of static friction
asked by Leanna 
Urgent Chemistry Problem!!
Calculate Delta G at 298 K for the following reactions. Ca(s) + CO2(g) + 1/2O2(g) > CaCO3(s) 2KClO3(g) > 2KCl(s) + 3O2(g) CH4(g) + 3Cl2(g) > CHCl3(g) + 3HCl(g) Delta G^0f CHCl3 is  70.4 kJ/mol The following reactions are important ones in catalytic
asked by Amy 
Math
A theater group made appearances in two cities. The hotel charge before tax in the second city was $1000 higher than in the first. The tax in the first city was 4% , and the tax in the second city was 7% . The total hotel tax paid for the two cities was
asked by jess 
math
The total fencing around a square field is 80 yards. The field has an area of how many square yards?
asked by mary 
BIOSTATISTICS PLEASE HELP
exercise: The average number of sick days an employee takes per year is believed to be about 10. Members of a personnel department do not believe this figure. They randomly survey 8 employees. The number of sick days they took for the past year are as
asked by yao 
Chemistry
A galvanic (voltaic) cell consists of an electrode composed of magnesium in a 1.0 M magnesium ion solution and another electrode composed of copper in a 1.0 M copper(I) ion solution, connected by a salt bridge. Calculate the standard potential for this
asked by Anon 
chemistry
Would the following procedural errors result in an incorrectly high or low calculated percent NaOCl in commercial bleach solution? A student failed to allow the volumetric pipet to drain completely when transferring the diluted bleaching solution to the
asked by Brooke 
Chenmistry
Fe2O3 + 3C = 2Fe + 3CO How many grams of C are required to react with 2.50 moles of Fe2O3 ?
asked by Marcie 
Math
190 students like the program 135 students think the program is unnecessary 220 students plan on running for student government next year. If a circle graph were made from this data, what would the measure of the central angle be for the group that likes
asked by Katie 
algebra
Which property would allow you to use mental computation to simplify the problem 27 + 15 + 3 + 5?
asked by Candice 
Math
Pythagorean Theorem A rectanglar box is 9 in. wide, 11 in. tall, and 20 in. long. What is the diameter of the smallest circular opening through which the box will fit? If necessary, round to the nearest tenth of a centimeter.
asked by Jane 
Physics
Question 2. 3 Consider a box that explodes into two pieces while moving with Fig. 924 a constant positive velocity along an x axis. If one piece, with mass : m1, ends up with positive velocity v1, then the second piece, with : mass m2, could end up with
asked by Michelle 
Chemistry
How do you differentiate between fluorene and acetanilide? Suggest procedures and steps involved other than melting point and chromatography.
asked by Albert 
trig
An airplane pilot wishes to maintain a true course in the direction 250° with a ground speed of 400 mi/hr when the wind is blowing directly north at 60 mi/hr. Approximate the required airspeed and compass heading
asked by Caroline 
Chemistry
I am so overwhelmed. can somebody please help me? Consider a solution that is 0.022 M in Fe^2+ and 0.014 in Mg^2+ A) if K2CO3 is to selectively precipitate one of the cations while leaving the other cation in solution, which cation will precipitate first?
asked by Jennifer 
Physics 1
A coin rests 12.0 cm from the center of a turntable. The coefficient of static friction between the coin and turntable surface is 0.350. The turntable starts from rest at t = 0 and rotates with a constant angular acceleration of 0.749 rad/s2. After what
asked by Emily 
physics
A test charge of +3.00 106 C experiences a downward electrostatic force of 15 N when placed at a certain point in space. What are the magnitude and direction of the electric field at this point?
asked by Amy 
Chemsitry
For a particular redox reaction NO2– is oxidized to NO3– and Cu2 is reduced to Cu . Complete and balance the equation for this reaction in basic solution. Phases are optional.
asked by Connor 
civil engineering
A stone (on the edge of the roof) thrown from the top of a building is given an initial velocity of 20.0 m/s straight upward. The building is 50.0 m high, as shown in Fig. 4. Using tA = 0 as the time the stone leaves the thrower’s hand at position ○A .
asked by hamze 
physics
a climber with a weight of 590 N is held by a belay rope connected to her climbing harness and belay device; the force of the rope on her has a line of action through her center of mass. The indicated angles are θ = 35˚ and φ = 35˚. If her feet are on
asked by ANS 
Personal Finance
Janice Jacobs is planning for her retirement. She knows what assets and liabilities she has now and expects to have in the future. She knows what her spending patterns are likely to be and adjusted them for inflation. She also has identified all of her
asked by bree 
chemistry
how many moles of aluminum are needed to react completly with 1.2 mol of FeO 2Al(s)+3FeO(s)=3Fe(s)+ Al2O3(s)
asked by carlos 
Math algebra
A motel clerk counts his $1 and $10 bills at the end of a day. He finds that he has atotal of 56 bills having acombined monetary value of $191. Find the number of bills of each denomination that he has
asked by Evelyn 
Physics
A parachutist relies on air resistance (mainly on her parachute) to decrease her downward velocity. She and her parachute have a mass of 55.5kg and air resistance exerts a total upward force of 620N on her and her parachute. What is the combined weight of
asked by Ben 
chemistry
How many electrons in an atom could have these sets of quantum numbers? n=3 n=5, l=2 n=6, l=1 ml=1
asked by anonymous 
Math Statistics
The annual per capita consumption of fresh apples (in pounds) in a nearby state can be approximated by a normal distribution, with a mean of 15.9 pounds and a standard deviation of 4.2 pounds. (a) What is the smallest annual per capita consumption of
asked by Ann 
Chemisty
Calculate the standard enthalpy change for the following reaction at 25 °C. MgCl2(s)+H2O(l)>MgO(s)+2HCl
asked by Orton 
Physics
Suppose that the resistance between the walls of a biological cell is 4.9 × 10^9 ohms (a) What is the current when the potential difference between the walls is 68 mV? (b) If the current is composed of Na+ ions (q = +e), how many such ions flow in 0.45 s?
asked by Drue 
Introductory Chemistry
A sample of 0.255 mole of gas has a volume of 748 mL at 28C. Calculate the pressure of this gas.
asked by Toni 
Physics
The drawing shows a sulfur dioxide molecule. It consists of two oxygen atoms and a sulfur atom. A sulfur atom is twice as massive as an oxygen atom. Using this information and the data provided in the drawing, find (a) the x coordinate and (b) the y
asked by Dee 
AP CHEMISTRY
The molar mass of an unknown organic liquid (M~100) is determined by placing 5 mL of the liquid in a weighed 125mL conical flask fitted with a piece of Al foil with a pin hole in it. The flask is heated in a boiling water bath until the liquid evaporates
asked by Someone 
Physics
When a charged particle moves at an angle of 12° with respect to a magnetic field, it experiences a magnetic force of magnitude F. At what angle (less than 90°) with respect to this field will this particle, moving at the same speed, experience a
asked by Anonymous 
chemistry
How to calculate the molarity of commercial bleach
asked by Brooke 
Physics
A test rocket is fired up from rest. The net acceleration is 20m/s^2 upward and continues for 4.0 seconds, at which time the rocket engines cease firing. What maximum elevation does the rocket reach?
asked by Kim 
NOVACC
A circular loop of wire (radius = 6.0 cm, resistance = 40 miliamps) is placed in a uniform magnetic field that makes and angle of 30 degrees with the plane of the loop. The magnitude of the field changes with time according to B = 30 sin (20t)mT, where t
asked by J 
Combinations
Anna was opening a new restaurant, so she went to the sign store to get letters to make a sign to hang above the storefront. When she got to the sign store, the only letters they had in stock were two copies of the letter 'X,' two copies of the letter 'E,'
asked by Anna 
math: Algebra
Three cylindrical tubes with with a 12 in diameter are strapped together by a plastic band. How long is the band?Suppose that four of the same tubes are strapped together with a snugly fitting plastic band how long is the band?
asked by John 
chemistry
a 23.74 ml volume of .0981 M NaOH was used to titrate 25 mL of a weak monoprotic acid solution to the stoichiometric point. determine the molar concentration of the weak acid solution. Express your answer to the correct number of significant figures.
asked by Joann 
Math
Tonya took out a loan to help pay for her house. She borrowed $50,000 for 15 years at a yearly simple interest rate of 5%. How much interest will she end up paying the bank?
asked by Sanya 
Physics
Suppose you wish to make a vertical leap with the goal of getting your head as high as possible above the ground. At the top of your leap, your arms should be... a. held at your sides. b. raised above your head. c. outstretched, away from your body.
asked by Leanna 
Math
Please help! 1. A taxi cost $2.25 for the first mile plus .15 for each additional tenth of a mile. For a 5.2 mile trip Eric paid $10 and told the driver to keep the change. How much was the drivers tip? 2. 2 trillion is how much more than seven hundred
asked by Erin 
dynamics
a motorcycle traffic police starts from rest at point A two seconds after a car speeding at the constant rate of 120 km/h passes point A (where speed limit is 100 km/h only) if the policeman accelerates at the rate of 6 m/s^2 until he reaches the speed of
asked by mahdi 
Physics
A large spool in an electrician's workshop has 52 m of insulationcoated wire coiled around it. When the electrician connects a battery to the ends of the spooled wire, the resulting current is 2.3 A. Some weeks later, after cutting off various lengths of
asked by Drue 
US History
Which of the following required land to be paid for in gold or silver, instead of paper money?
asked by Anonymous 
chemistry
A 23.4 mL sample of 0.300 M trimethylamine, (CH3)3N, is titrated with 0.399 M perchloric acid. After adding 6.67 mL of perchloric acid, the pH is
asked by Sean 
Economics
The price of cranberry juice suddenly increases. As a result, Glenda begins drinking more grape juice, which is less expensive, but tastes just as good to her. In this case, Glenda’s elastic demand is due to A. availability of substitutes. B. relative
asked by bree 
Physics
A 45m length of wire is stretched horizontally between two vertical posts. The wire carries a current of 67 A and experiences a magnetic force of 0.15 N. Find the magnitude of the earth's magnetic field at the location of the wire, assuming the field
asked by Anonymous 
math
Susan Borrowed $5000. The term of the loan is 12% compouned monthly for 3 years. what is the monthly payments? How much must she pay at the end of of 1 year to pay the balance off? How much did she save in interest by paying the loan off in one year??
asked by Rose 
Math
If you deposit P dollars into a bank account paying an annual interest rate r, with n interest payments each year, the amount A you would have after t years is A=P(1+r/n)^nt. Kevin places $100 in a savings account earning 6% annual interest, compound
asked by Amber 
Statistics Math
The annual per capita consumption of fresh apples (in pounds) in a nearby state can be approximated by a normal distribution, with a mean of 15.4 pounds and a standard deviation of 3.8 pounds. (a) What is the smallest annual per capita consumption of
asked by TJ 
Algebraic
Joan Arlington has twice as much money invested at 5% simple annual interest as she does at 4%. If her yearly income does she have at each rate? At 4%, she has At 5%, she has
asked by Evelyn 
Math
Which of the following could NOT represent the intersection of a plane and a triangular prism? A. a triangular prism B.a triangle C. a rectangle D. a point I had D, a point because if you cut a triangle in half you can not get a point out of it. If this is
asked by B6 
physics
Julie throws a rock vertically upward. From a height of 64.0 meters above thehow ground. The initial velocity of the rock is 31.0 meters per second neglect air resistance How long does it take for the rock to hit the ground? What is the velocity of the
asked by kieshà 
Physics
There are approximately 110 million TVs in the United States. Each uses, on average, 80 W of power and is turned on for 5.9 hours a day. If electrical energy costs 0.11 dollars per kWh, how much money is spent every day in keeping the TVs turned on?
asked by Drue 
Finance
. Suppose the December CBOT Treasury bond futures contract has a quoted price of 8007. If annual interest rates go up by 1.00 percentage point, what is the gain or loss on the futures contract? (Assume a $1,000 par value, and round to the nearest whole
asked by KBrown 
Physics
A stone is thrown from the edge of a cliff into the ocean below. It is thrown somewhat upward, but mostly outward. The stone has a mass of 2.0kg and is thrown with a speed of 10m/s from an initial height of 5.0m above the ocean. A. What is the kinetic
asked by Jay 
physics
A charge of 12 ìC, traveling with a speed of 9.0 x 106 m/s in a direction perpendicular to a magnetic field, experiences a magnetic force of 8.7 x 103 N. What is the magnitude of the field?
asked by adrienne 
Physics
A jogger starting morning run accelerates from a stand still to their jogging pace of 8km/hr. They reach a speed of 8km/hr 5 seconds after starting. How long does it take the jogger to reach the end of their 20m driveway?
asked by Parshu Ram 
S S T
THE LONGEST RIVER IN INDIA IS?
asked by NISHI 
algebra 1 part 2
What are the minimum, first quartile, median, third quartile, and maximum of the data set? As cars passed a checkpoint, the following speeds were clocked and recorded. Speed (mph): 55 62 61 54 68 72 59 61 70
asked by melinda 
Chemistry
Na2SO4 solution is slowly added to a solution which contains .10 M Ba (2+) and .1 M Pb(2+). which of the following statements descrives the result of the addition of Na2SO4
asked by Joe 
Chemistry
Explain clearly which out of the following combinations of solutes would result in the formation of a buffer solution? A) NH3 and HCl in a 2:1 molar ratio B) HCl and NaOH in a 1:2 molar ratio C) NH3 and NH4Cl in a 2:1 molar ratio D) NaOH and CH3COOH in a
asked by Jill 
CHM 1010
Under pressure of 862kPa, a gas has a volume of 752ml. The pressure is increased, without changing the temperature, until the volume is 624ml. What is the new pressure
asked by Jocelyn 
physics
In a solar water heater, energy from the Sun is gathered by water that circulates through tubes in a rooftop collector. The solar radiation enters the collector through a transparent cover and warms the water in the tubes; this water is pumped into a
asked by Ashley 
Chemistry
A ground state hydrogen atom absorbs a photon of light having a wavelength of 93.77 nm. It then gives off a photon having a wavelength of 2630 nm. What is the final state of the hydrogen atom?
asked by marie darling 
advance functions gr 12
use the asymptotes and intercepts to make a quick sketch of the function f(x)= x2 (numerator) x+4(denominator) and its reciprocal f^r = x+4 (numerator) x2 (denominator) on the same set of axes. b) describe the symmetry in the graphs in part a) c)
asked by james 
Physics
The fundamental frequency of the G string of a guitar is f=196Hz. The fundamental vibrational mode of the string is described by the standing wavey(t,x)=acos(2πft)sin(πxL)where L=65cm is the length of the string and a=1mm is the amplitude of the
asked by stranger 
LEATURE
In The Call of the Wild, what valiant, tragic figure among the dogs must finally be put down for the good of the lives of the team? A. Pike B. Spitz C. Dub D. Solleks
asked by Anonymous 
Math/ Calculus Please HELP!!!
The following table gives the velocity v(t) (in feet per sec) at different instances of time t (in sec) of a particle moving along a horizontal axis. t 0 4 8 12 16 20 v(t) 43 42 40 35 25 5 Estimate the distance traveled by the particle between t = 0 sec
asked by Marto 
Physics
A stone is thrown from the edge of a cliff into the ocean below. It is thrown somewhat upward, but mostly outward. The stone has a mass of 2.0kg and is thrown with a speed of 10m/s from an initial height of 5.0m above the ocean. A. What is the kinetic
asked by Jay 
math
The ratio of dimes to nickels is 2/3. He has $.75 innickels. How many dimes does he have?
asked by bella 
Economics
The price of cranberry juice suddenly increases. As a result, Glenda begins drinking more grape juice, which is less expensive, but tastes just as good to her. In this case, Glenda’s elastic demand is due to i think is a but im not sure
asked by bree 
chemistry
determine how many grams of N2 are produced by 9.12 g of H2O2 and 6.90 g of N2H4. 2H2O2+N2H4= 4H2O+N2
asked by lee 
physics
A light beam containing red and violet wavelengths is incident on a slab of quartz at an angle of incidence of 50.0°. The index of refraction of quartz is 1.455 at 660 nm (red light), and its index of refraction is 1.468 at 410 nm (violet light). Find the
asked by Lara 
physics
What mass (in grams) of steam at 100°C must be mixed with 446 g of ice at its melting point, in a thermally insulated container, to produce liquid water at 65.0°C? The specific heat of water is 4186 J/kg·K. The latent heat of fusion is 333 kJ/kg, and
asked by safc 
Math
Sorry but how do you convert 24.375 into a fraction?
asked by Anonymous 
pre calculus
If you are driving down a 10% grade, you will always be 10% below where you would have been if you could have driven on flat ground from where you started. Suppose you descend to where you are 20 feet below your starting point. What concept does the
asked by sharon 
math help
suppose that the functions p and q are defined as p(x)=x^2+3 q(x)= squarex+2 (q*p)(2)= (p*q)(2)=
asked by sw 
Physics
MultipleConcept Example 9 reviews the concepts that are important to this problem. A light bulb is wired in series with a 116Ω resistor, and they are connected across a 120.0V source. The power delivered to the light bulb is 20.7 W. What is the
asked by Drue 
math
two equal sides of an isoscles triangle with fixed based 'a' are decreasing at the rate of 9cm/second how fast is the area of triangle decreasing when the two sides are equal to 'a'
asked by shweta 
math
a boy is walking at dusk and notices his shado from a nearby street light. the boy is 5 feet tall and the street light is 12 feet above the ground. When the boy is 4 feet from the base of the street light how long will his shadow be?
asked by Ro 
physics
block 1 has mass m1 = 480 g, block 2 has mass m2 = 540 g, and the pulley is on a frictionless horizontal axle and has radius R = 5.2 cm. When released from rest, block 2 falls 76 cm in 5.2 s (without the cord slipping on the pulley). What is the pulley's
asked by ANS 
Gen English
Ok im still confused in the poem dreams by langston hughes describe how the poem is structured, or arranged in lines and stanzas.
asked by Shay 
math
n the xy plane, the graph of y = x^2 and the circle with center (0,1) and radius 3 have how many points of intersection?
asked by naomie 
chem
how many calories of heat energy are required to warm 250ml of water from 35 degrees celsius to 64 degrees celsius?
asked by Denise 
physics
If the specific heat of water = 4190 J/kg /°C and a total of 120g of hot water at 95°C is poured into the calorimeter, resulting in a final equilibrium temperature of 73°C, how many joules of heat are lost by the water? 11061.6 If the specific heat of
asked by Shay 
Chem
What will be the temperature of a 3.5 gram sample of carbon dioxide gas in a 2.5 liter container at .955 atm
asked by Ben 
physics
The average rate at which energy is conducted outward through the ground surface in a certain region is 66.8 mW/m2, and the average thermal conductivity of the nearsurface rocks is 2.13 W/m·K. Assuming a surface temperature of 8.01°C, find the
asked by Ashley 
Maths
During the month of January, temperatures can decrease by 18° per week. If this happens, and the temperature on January 12th was 9°, what is the temperature on January 19th?
asked by Sanya 
Gen English
In the poem Dreams by Langston Hughes, Describe how the poem is structerd,or arranged in lines and stannnzas.
asked by Shay 
Chemistry
Can someone please check to see if I am doing this correctly. Thank you :) Q) Calculate the new molarity of a 35mL sample of 0.450 M CaCl2 solution that is diluted with enough water to make 250 mL of solution. A) 0.450 m CaCl2 x 35mL/250mL = 0.063 mL
asked by Kishwa 
Math advance functions gr 12
use the asymptotes and intercepts to make a quick sketch of the function f(x)= x2 (numerator) x+4(denominator) and its reciprocal f^r = x+4 (numerator) x2 (denominator) on the same set of axes. b) describe the symmetry in the graphs in part a) c)
asked by james 
math help
The onetoone functions and are defined as follows. g={(3,6),(2,4),(3,7),(6,9)} h(x)=2x9 find the following g^1(6)= h^1(x)= (h^1 oh)(1)=
asked by sw 
Physics
How much work is done by the horizontal force F = 150 N on the 18 Kg block when the force pushes the block 5.0 M up along the 32 degree frictionless incline?
asked by Anyi 
science
What are 4 examples of physical systems designed by people?
asked by kole 
Algebraic
Salem and Vernon ville are 168 miles apart. A car leaves Salem traveling towards Vernonville, and another car leaves Vernonville at the same time, traveling towards Salem. The car leaving Salem averages 10 miles per hour more than the other and they meet
asked by Evelyn 
health
Why are fad diets considered unhealthy?
asked by melissa 
Physics
Two objects with masses 4.90 and 2.10 hang 0.800 above the floor from the ends of a cord 7.20 long passing over a frictionless pulley. Both objects start from rest. Find the maximum height reached by the 2.10 object. The heavier object will move .8 m down,
asked by Ben 
maths
The probability that Katarina will correctly solve a given Brilliant math problem is 1/8. The probability that Layla will solve the same problem correctly is 1/12. The probability that they will give the same incorrect numerical result is 1/1001. Suppose
asked by rohit 
Algebra
Find the 1st four hexagonal numbers and the formula The difference of two squares a2  b 2 can be found in 16sq2 – 13sq2 = 3(16 + 13) = 3 . 29 = 87
asked by Ernie 
Chemistry
How many moles of H2O are produced when 6 moles of o2 is consumed in burning meyhyl Alchohol
asked by George 
Math
There are about 5 ml in one teaspoon. There are 3 teaspoons in one tablespoon. How many ml are there in 10 tablespoon?
asked by TJ 
chemistry
The heat of solution of potassium acetate in water is 15.3 ,What will be the final temperature when 0.132 is dissolved in 550 water that is initially at 25.1 ?
asked by Anonymous 
math
what is the slope of the graph? what does it mean in the context of the problem? the slope for the problem is 2 i don't understand the second question then it says what is the yintercept and what does the yintersept represent. for the problem the
asked by lily 
MATHS
A SUM OF MONEY IS KEPT IN A BANK AT 8% INTEREST COMPOUNDED ANNUALLY.HAD THE INTEREST BEEN AT 10% COMPOUNDED SEMI ANNUALLY THE AMOUNT AFTER 1 YEAR WOULD HAVE BEEN 225 MORE.WHAT WAS THE PRINCIPAL AMOUNT KEPT IN THE BANK?
asked by NISHI 
math
This is a matrix question. R is the matrix (3r 1) (s 2s) 1. State, in terms of s and r the determinant of R 2. If r=1/3 and s=4 determine the inverse of R 3.State the pair of r and s not including 0, which would make the matrix R a singular matrix
asked by lindsay 
algebra
Solve with fractions. 6x^(2/3)11x^(1/3)+4=0 How do I solve? Thanks
asked by Anonymous 
Maths
For a Chinese New Year celebration, James and Zhou are making a dragon costume similar to the one shown above. In total, the costume requires 58.6 meters of fabric. Zhou already has 11.5 meters of fabric, and James just purchased 20.2 meters of fabric. How
asked by Sanya 
Math
An object at rest begins moving horizontally on the xaxis, starting at position x(t) = 0 feet at time t = 0 seconds.Suppose, after exactly 2 seconds we measure the position of the object to be 3 feet to the right of the origin AND measure the object to be
asked by Chris 
Science Physics
An object weighs 12 N on earth. When it is brought to Mars, it has a weight of 4.8 N. What is the acceleration due to gravity on Mars? (Taking the acceleration due to gravity on earth is 10 m/s²)
asked by Sarah 
Math
1. Number sense. Could the frozen yogurt survey help restaurants choose flavors of frozen yogurt? Explain. 2. Give an example of a topic for a survey question where the results for the answers could be similar.
asked by Mike 
algebra
Consider making a fourdigit I.D. number using the digits 3,5,8, and 0 a. How many I.D. numbers can be formed using each digit once? b. How many can be formed using each digit once and not using 0 first? c. How many can be formed if repetition is allowed
asked by Karina 
math
what is the slope of the graph? what does it mean in the context of the problem? the slope for the problem is 2 i don't understand the second question then it says what is the yintercept and what does the yintersept represent. for the problem the
asked by lily 
physics
A battery with an emf of 14.5 V and internal resistance of 0.83 Ω is connected across a load resistor R. If the current in the circuit is 0.81 A, what is the value of R?
asked by Ray 
maths
Find the largest possible value of x^3+y^3+z^3 for realx, y, z, such that xyz^2=−64y−128x x^2yz=−32y−32z 3xy^2z=128x−64z
asked by stranger 
Math
The gravitational acceleration, g, on the Earth is proportional to the mass, M, of the Earth and inversely proportional to the square of the distance, r, from the Earth's center. If the gravitational acceleration on the center of the Earth is 9.8 m/s^2,
asked by Lorie 
PHYSICS
1kg of fat is equal to 30MJ of energy.the efficiceny of converting fat to energy is 20%. suppose you life a mass of 12kg 2.0m vertically,500 times, how much work do you do? if all the energy used to do the work comes from the burning fat how much fat is
asked by Riana 
Science ASAP
1. Angiosperms have organs such as ______________ and produce seeds. The are described as _________________plants. (1 point) flowers; vascular stems; pollinated rhizoids; vascular leaves; nonvascular 4. Of the following, which is NOT a characteristic of
asked by Delilah 
chemistry
You wish to make ntype silicon. Select all suitable dopant atoms from the following list:P, B, Mg, Ga, As, In, Sb, Al, Tl, H
asked by adex 
MATHS
IF ONE OF THE INTERIOR ANGLES OF A REGULAR POLYGON IS TO BE EQUAL TO (9/8) TIMES OF ONE OF THE INTERIOR ANGLES OF A REGULAR HEXAGON,THEN THE INTERIOR SIDES OF THE POLYGONS IS .......?
asked by NISHI 
math
What is the angle relationship notes for the test i have to take? please help me someone thanks for the help you guys... oh yeah almost forgot this some 7th grade math..
asked by lola 
Chemistry
Can someone please tell me if I am doing this problem correctly. Thank you! Given: 450 mL (0.450L); 0.250 M KNO Need: Mass of KNO Q) What mass of KNO3 (MW=101) is needed to prepare 450mL of 0.250 M KNO3 in water? A) 0.450 L Solution x 0.250 M KNO/1 L
asked by Kishwa 
English
1. What is bibimbap? It is a popular Korean dish. 2. What do we have today? We have a special dessert today. 3. What is today's special dessert? It's chocolate ice cream. 4. Who are they? They are student reporters. 5. What is the opening hours of the
asked by rfvv 
Chemistry
Q) Calculate the new molarity of a 35mL sample of 0.450 M CaCl2 solution that is diluted with enough water to make 250 mL of solution. A) M1V1 = M2V2 M1 = 0.450 M2 = ? V1 = 0.035 L V2 = 0.250 L M2 = M1 X V1/V2 0.450 X (0.035L/0.250L) = 0.063 Did I set this
asked by Kishwa 
English
1. When is the library open? It is open from 8 a.m. to 5 p.m. 2. What time is the library open? It is open from 8 a.m. to 5 p.m. 3. What are the opening hours of the library? The opening hours are from 8 a.m. to 5 p.m. 4. What are opening hours of the
asked by rfvv 
English
7.Me definition of a(n) (optimist misapprehension) is someone who looks at an almost empty bottle and says, "This bottle is one quarter full." optimist 8.The worst way to deal with disappointments is to become (fluent sulky) the best way is to smile and
asked by Jerald 
algebra
A fair sixsided die is rolled. If the number showing is even, you lose a point for each dot showing. If the number showing is odd, you win a point for each dot showing. a. Find E(x)for one roll if x represents the number of point s you win. b. Find the
asked by Karina 
science need help
2 H2 + O2 = 2H2O 2 grams + 32 grams=_ _ _ _ _grams how would the mass of water formed in the reaction compare to the mass of oxygen and hydrogeb that reacts. in your response be sure to: include they type of change illustrated in the balanced eqaution
asked by jeff 
English
Word box adhere affirm atrocity audition cope deter disquieting empower fluent lag mangle misapprehension optimist prowl stupefy sulky supplement surge trait unscrupulous 1.He is so careless in handling his textbooks that by the end of the term he has
asked by Jerald 
science help ASAP please
1. Angiosperms have organs such as ______________ and produce seeds. The are described as _________________plants. (1 point) flowers; vascular stems; pollinated rhizoids; vascular leaves; nonvascular 4. Of the following, which is NOT a characteristic of
asked by Delilah 
algebra
factor 24x^2+123x+15
asked by patti 
Math (Number Theory)
The tortoise and the rabbit were in a 42 kilometer marathon. The rabbit can run 5 times as fast as the tortoise. Less than halfway into the race, the rabbit dropped his lucky rabbit's foot, and so stopped to try and find it. After finding it, he started
asked by Hale 
Math
Ericand frank want to equally share 1 and 1/3 feet of rope. What lenght of rope should each friend get?
asked by Avery 
chemistry
Chemical analysis of a germanium crystal reveals indium at a level of 0.0003091 atomic percent. Assuming that the concentration of thermally excited charge carriers from the Ge matrix is negligible, what is the density of free charge carriers (free
asked by adex 
chemistry
Determine the amount (in grams) of boron that when substitutionally incorporated into of silicon will establish a charge carrier density of carriers/cm .
asked by adex 
geology
If the tilt of the earth’s axis increased to 30 degrees, which of the following statements would be correct? (a) There would likely be a greater variation between summer and winter positions of the Sub Tropical Ridge. (b) Summers are likely to become
asked by alex 
Mechanics
Two objects with masses 5.60 and 2.40 hang 0.600m above the floor from the ends of a cord 8.00m long passing over a frictionless pulley. Both objects start from rest.Find the maximum height reached by the 2.40kg object
asked by Sarah 
Economics
A market failure is when markets do not bring about profit maximization?
asked by Linda 
Physics
An electrical cable is atteched to the electrical pole 25m apart. The cable weighs 2.5N/m and can resist a pull of 300N . assuming that the cable takes a parabolic shape, detrmine the smallest value of sag in the cable
asked by Nirpendra 
chemistry
How will an increase in pressure influence the amount of SO2(g) present at equilibrium?explain.
asked by Pearl 
English
1.Shortly after World War II, Japan began the great economic (sure, trait) that has put her among the world's top industrial nations surge 2.All those smooth words and vague promises are not going to (adhere, deter) us from doing what we know is needed to
asked by Jerald 
Information Literacy
Which of the following is true regarding doing an online search for information?
asked by Anonymous 
MathHelp
Consider the pair of linear equations below. 4x+6y=12 2x+3y=6 Part A: What is the relationship, if any, between 12 and 6? Part B: Do the two equations have one solution, no solution, or infinitely many solution? Explain. Part C: How can you verify your
asked by Jayson Angole 
Probabilities
A group of 5 people are going to meet weekly at the library for 4 weeks. Each week, two people are selected at random to speak. Each person may speak in multiple weeks, but no pair of people will speak together more than once. The probability that there is
asked by Anna 
calculus
Flight Path. In this problem you will use a cosine function to model the flight path of a plane that begins its descent from 20000 ft when it is 45 miles from the airport. Find the !@#$%^&tion p(x)= ACos(wx)+B that that gives the altitude in ft when the
asked by Tom 
English
16.Jackals and other scavengers now (prowl deter) through the ruins of what is once a great city prowl 17.A loud groan went through the class when we got the (unscrupulous disquieting) news that there would be a full period test later in the week
asked by Jerald 
Physics
A spring with a spring constant of 35.0 N/m is attached to diﬀerent masses, and the system is set in motion. What is its period for a mass of 2.4 kg? Answer in units of s
asked by alice 
Chemistry
Does Pb(NO3)2 + Cu has a reaction? if so, what will it be?
asked by LG 
Chemistry
Can someone please explain how to convert this, sadly I was absent the day we figured out how to do this in class. (H+1) pH (OH1) pOH M M 2.5 2.5x10^5 5.2x10^2 5.2 These are the only answers given, I have to calculate the rest from them. Ive been
asked by Kishwa 
quiz
The vertices of a cube are labeled with the numbers 0,1,2,3,4,5,6 and 7, such that no two vertices are labeled with the same number. The sum of any 2 numbers on an edge is prime. What is the maximum sum of the 4 numbers on a face?
asked by Anna 
quiz
We are given 7 squares of side lengths 1, 2, 2, 2, 3, 4, 5. They can be fitted to form a rectangle, with no overlap or gaps inbetween. What is the perimeter of the rectangle?
asked by Anna 
Chemistry
use the HendesonHasselbalch equatio. To calculator the pH of a solution at is A) 0.15 M on C5H5N and 0.10M in C5H5NHCl. Kb:1.7x10^9 B) 15.0 g of HF and 25.0g of NaFin 125 ml of a solution. Ka 3.5x10^4
asked by Jill 
geometry
Derive the distance formula (d) shown below for points A = (x1, y1, z1) and D = (x2, y2, z2). 2 2 1 2 2 1 2 d = (x2 − x1) + (y − y ) + (z
asked by denise 
please HELP ASAP :( pleasseee
Exercise : A machine is set up such that the average content of juice per bottle equals μ . A sample of 36 bottles yeilds an average content of 48.5cl. Test the hypothesis that the average content per bottle is 50cl at the significance level. Assume that
asked by yao 
weight
If you decided to lose weight then ____ help?
asked by melissa 
Algebraic
Joan Arlington has twice as much money invested at 5% simple annual interest as she does at 4%. If her yearly income does she have at each rate? At 4%, she has At 5%, she has
asked by Evelyn 
physics
If the water had lost 12000 joules and the calorimeter gained 1300 joules as the temperature of both rock and calorimeter increased from 22°C to 73°C and the mass of rock in the calorimeter was 185 grams, what is the specific heat, c, of the rock
asked by Shay 
health
national weight control registry
asked by melissa 
Physics
Find the modulus direction cosin unit (1)4a2b+3c (2)a7b+5c (3)4a3b+c
asked by Angela 
Physics  Electric Potential
A charge of  0.15 C is moved from a position where the electric potential is 13 V to a position where the electric potential is 60 V. What is the change in potential energy of the charge associated with this change in position?
asked by Danielle 
chemistry
Calculate the lattice constant in palladium . Use only the information available in the class Periodic Table, and express your answer in angstroms.
asked by adex 
Chemistry
How much Pb(OH)2(in mg) can be added to 4.0liter of a 0.095 M KOH solution before precipitation starts? Ksp 4.2x10^5
asked by Joy 
physics
Two particles, each of mass 3.00 kg and speed 5.41 m/s, travel in opposite directions along parallel lines separated by a distance 3.15 m. What is the magnitude of L, the angular momentum of the twoparticle system around a point midway between the two
asked by safc 
Geometry
What is the surface area and lateral area of a regular triangular pyramid if the slant is 7 and the altitude is 5?
asked by K 
science
If a scale model of the planets are built with Earth's diameter set to 10 centimeters, how big would the model of Jupiter have to be in centimeters?
asked by wyatt 
Maths
Show proof of deriving the Quadratic Formula from the Quadratic Equation ax^2 + bx + c = )
asked by Jeconiah 
Science
Okay, I need help with balancing equations. It's so frustrating for a 7th grader! _ My problem is: _Na3PO4 + _KOH = NaOH + _K3PO4
asked by Chastity 
math
Noor has 24 blockst .3 are red,7 are blue and the rest are white.what fraction of her blocks is white.write the fraction in simplest form
asked by zainab mohammed 
science need help
2 H2 + O2 > 2 H2O 2 grams + 32 grams > _ _ _ _ _ grams how would the mass of water formed in the reaction compare to the mass of oxygen and hydrogen that reacts? include types of change illustrated in the balanced equation. explain the conversation of
asked by jeff 
math
Please simplify and explain to me how to do each of these. Greatly appreciated. x = multiply sign (not a variable) a)((9)^(1/2) (4)^2) / 24 b) (16)(2)^(x+2) The x here is a variable, not multiplication sign) c) (3)^(8)/ (3)^(6) (3)^(5) d) ((4)^(2) +
asked by Alicia 
advance functions gr 12
Using rational functions solve x+5(numerator) x3 (denominator) = 2x+7 (numerator) x(demominator)
asked by Fadak 
Math advance functions gr 12
Using rational functions solve 7+ 1(numerator) x (denominator) = 1 (numerator) x2(demominator)
asked by alex 
English
1. Who are they? They are student reporters. 2. What are they? They are student reporters. 3. What's their job? They are student reporters. 4. What do they do? They are student reporters. (Which questions are suitable for the answer?)
asked by rfvv 
MathHelp
A computer technician keeps track of his earnings throughout each month. the technician observes that his earnings are a linear function of the number of hours he works during the month. The technician finds that when he works 55 hours during the month, he
asked by Jayson Angole 
English
6. I will adhere affirm to the great ideas for which our ancestors suffered so much adhere
asked by Jerald 
English
10.After the conductor (auditioned supplemented) all the candidates for the position of first violinist he made his final choice auditioned 11.Everything that I have learned about Abraham Lincoln from history books (stupefies affirms) my reverence for this
asked by Jerald 
Chemistry
what are the products of Ca +H +OH>?
asked by LG 
FUNCTION TABLES
I NEED TO WRITE AN EQUATION TO REPRESENT THE FOLLOWING FUNCTION INPUT X 1 2 3 4 5 OUTPUT Y 2 6 10 14 18 PLEASE HELP THIS IS MAKING US CRAZY
asked by JOAN BELL 
LA
For questions 7–11, each sentence is missing one type of punctuation. Choose the letter of the punctuation that correctly completes each sentence. 7. The pet stores shelves were filled with items I wanted for my pets. (1 point) apostrophe semicolon colon
asked by Anonymous 
Algebra help!!
help please!! 1. There is an E like symbol that has a 7 at the top. On the bottom k=1 and on the right side (1)^k K 2. There is an E like symbol that has a 8 at the top. ON the bottom K=3 and on the right side (1)K/K(k2)
asked by john 
BIOSTATISTICS
Exercise : A machine is set up such that the average content of juice per bottle equals μ . A sample of 36 bottles yeilds an average content of 48.5cl. Test the hypothesis that the average content per bottle is 50cl at the significance level. Assume that
asked by yao 
PLS HELP
Which of the following statements is an opinion? A. a pet depends on it's owner for it's very life B.every one should have a pet c. studies have shown the healthrelated benefits of pets d. countless animals need homes i think it's a but im not sure
asked by Anonymous 
Number Theory
Yan was opening a new restaurant, so she went to the sign store to get letters to make a sign to hang above the storefront. When she got to the sign store, the only letters they had in stock were two copies of the letter 'X,' two copies of the letter 'E,'
asked by Lily 
math
if 3/4 of property cost rs 15000 what is the cost of 1/2
asked by vaidehi 
English
Wait 7 is stupefy 14 is disquieting and 20 is atrocity? 7.We were so ____ by the bad news that for a few moments we just sat there without moving or speaking 14.Naturally we were upset when we received the ____ news that our uncle had been taken to the
asked by Jerald 
math
mr.periwinkle owns a ranch.he wants to add an area in the shape of an equilateral triangle to one of his rectangular fields.if the length of the rectangular field is 3x feet and its area is (9x^26x)square feet,write an equation for the amount of fencing
asked by lori 
Calculus
Determine the equation ofthetangent line in slopeintercept form at x=1 of y^3 +2x^2=1 at x=1. Please show work so I can follow the process. Thanks!
asked by Rene 
weight
Obesity can cause a person to develop what type of conditions?
asked by melissa 
Math110
how many 6  slots codes can be made up using 2 letters followed by 2 digits followed by 2 letters where All of the following conditions must be met: a. the allowable letters are A through G b. the allowable digits are 2 through 7 c. no digit can be
asked by Demon 
Physics
Find the modulus direction cosin unit vector 1) 4a2b+3c (2) a7b+5c (3)4a3b+c
asked by Angela 
maths
What is the largest possible integer that can be chosen as one of five distinct positive integers whose average is 10? Details and assumptions The elements of a set are distinct, if no two of them are the same.
asked by rohit 
Math
1. The function r(w) = 2aw2 + b + c where a, b and c are constants. w You are given that r(1) = 5; r’(4) = 12 and r′’(2) = 18. By substituting for w in the above function and its derivatives or otherwise, show that the three given function values
asked by Amy 
Math
A 182 cm tall man is digging a hole in the ground. He stops for a moment and says: "I am done with one quarter of the hole. When I finish the job the top of my head is going to be three times as far under the ground as far it is above the ground now." How
asked by Nikee 
chemistry
Which material would you expect to have a greater bandgap energy between indium nitride and indium phosphide ?
asked by adex 
maths
Let f(x)=x^2−1. How many distinct real roots are there to f(f(f(x)))=0?
asked by rohit 
physics
You and your friend, both of mass 70 kg, are playing catch with a frisbee on frictionless ice. Initially, you are both at rest. You throw a 0.175 kg frisbee at 10 m/s horizontally at your friend, who catches it. After they catch the frisbee, what is the
asked by rohit 
chemistry
Gallium nitride is a semiconductor with a bandgap 3.2eV . Calculate the absorption edge of GaN . Express your answer in units of m .
asked by adex 
chemistry
what is the crystal system of the crystal structure of cesium chloride
asked by adex 
math 6 grade
Below are some sale prices for soda .Which offers the best price ? a. 6 for $1.75 b.8 for $1.90 c.12 for $3.15 d.30 for $7.50
asked by Sue 
physics113
find the modulus direction cosin unit vector 1)4a2b+3c, 2)a7b+5c, 3)4a3b+c.
asked by Angela 
Physics
Find the modulus direction cosin unit vector 1)4a2b+3c, 2)a7b+5c, 3)4a3b+c.
asked by Angela 
Fundementals of Art
Do you find that Claude Monet painting at the edge of a wood by John Singer Sargent depicts good contrast with asymmetrical balance or would Van Gogh's Starry Night be a better choice.
asked by Candy 
Indonesian culture
Q1: What is the puppet made of in the Indonesian shadow puppet show, wayang kulit? Q2: What is the white sheet made of in the Indonesian shadow puppet show, wayang kulit?
asked by rfvv 
clinical
a female aged 63 has high bp about 226/123 and develops diabetes type 2, and has a history of heart attack once. what medication n care should be provided to her?????
asked by yao 
SST
'SINGLE TRANSFERABLE VOTING SYSTEM OF PROPORTIONAL REPRESENTATION IS USED FOR THE ELECTION OF'
asked by NISHI 
Algebra
25sq2 – 21sq2 = 4(25 + 21) = 4 . 46 = 184
asked by Ernie 
Maths
Show proof of deriving the Quadratic Formula from the Quadratic Equation ax^2 + bx + c = O
asked by Jeconiah 
math
For a rock, paper, scissors experiment, there are 30 tries with a partner. I won 16/30 times. What's the probability of winning between 10 and 16 times inclusively? How do you solve this?
asked by Liza 
Algebra 8th grade
3a + 5b = 70 6a + 9b = 135
asked by Anon 
advance functions gr 12
Using rational functions solve x+5(numerator) x3 (denominator) = 2x+7 (numerator) x(demominator)
asked by Fadak 
English
5.It is far better to know you are ignorant of something than to act on the basis of wrong information and (misapprehensions auditions) misapprehensions
asked by Jerald 
advance functions gr 12
Using rational functions solve 3(numerator) 2x4 (denominator) < (with a "" underneath) 4 (numerator) x2(demominator)
asked by james 
English
1. What is the cooking classroom like? It's just like a big kitchen. 2. What does the cooking classroom look like? It looks just like a big kitchen. (Are both grammatical?) 3. What is the score? It's 3 to 1. 4. What is the score between them? The score is
asked by rfvv 
Math
Whats the answer for 0.15 divided into 0.1845
asked by Ava 
math
a bag of marbles contains 5 green 4 red and 6 yellow what is la probability of drawing 2 yellow with replacement.
asked by juan 
Math
Which is the last step in taking a survey? (Choices)... A. Explain the results B. write a survey questions C. Count tallies D. Make a tally chart and ask question.
asked by Thea 
math
what does the second term and the fourth term mean?
asked by emma 
Algebra help
I need some help I posted the first question to this a bit ago but didn't enter it correctly so sorry to those who helped! I also have a 2nd half which I understood till they added the dividing part. I need to find the first five terms of each recursive
asked by John 
Algebra
I have two problems that I need some help with. I believe I got to the answer but not quite sure if its right. I need to expand and evaluate each series. 1. There is an E like symbol that has a 7 at the top. On the bottom k=1 and on the right side (1)^k K
asked by John 
math
7^6 divided by 7^7
asked by rhianna 
maths
A group of 5 people are going to meet weekly at the library for 4 weeks. Each week, two people are selected at random to speak. Each person may speak in multiple weeks, but no pair of people will speak together more than once. The probability that there is
asked by stranger 
Algebra
I have several of these problems and am having trouble getting the hang of it. Can you help me? Factor. If the result is the square of a binomial, write it as such. If the result is prime, so state. Here are the first couple of problems. 1) x^2 + 7x + 12
asked by Mary 
math
Nancy made the following statement: The range of f(x) = ax + b is the set of all real numbers given that a and b are real numbers. Which produces a counter example to her statement?
asked by Tara 
Math
Which is the best estimate of 15/16 divided (1/2)?
asked by Hannah 
Fitness
If your use soymilk on regular basic, you should select a variety that’ A. fortified with protein. B enriched with calcium and vitamins. C. chocolate or vanilla flavored. D. Naturally fat fee I think the answer is "A"
asked by Jen 
Chemistry
Does mass affect pressure? I understand volume, and temperature does but not sure about mass. If I have a gas with mass 15 g, wont this exert less pressure than a gas have a mass of 30 g?
asked by Shadow 
weight
why is having abdominal fat a serious concern
asked by melissa 
health
for adults which ranges reflect an accurate BMI category
asked by melissa 
ALGEBRA!....
The population in a town called Atown in December 1900 is a perfect square. In January 1901, 48 people moved in, and the population is 1 more than a perfect square. In February 1901, 48 more people moved in, and the population is a perfect square. Assuming
asked by please help me out!!...MS SUE! 
algeBRA!!!
What is the sum of the rational roots of f(x)=x^3−4x^2+16x−39?
asked by please help me out!! 
inTEGERS!
How many positive integers less than 1000 are odd but not a multiple of 5
asked by please help me out!! 
math
This is a matrix question but I can't get a single bracket so I will use two. (a b)(5 1) =(12 2) (3 0)(2 4) (15 3) Find the values of a and b.
asked by lindsay 
maths
x,y and z are positive reals. What is the maximum value of ((x+y+z)^3−x^3−y^3−z^3)^2/(x^2+y^2+z^2)^3−x^6−y^6−z^6
asked by rohit 
maths
Three coins are randomly placed into different positions on a 4×10 grid. The probability that no two coins are in the same row or column can be expressed as ab where a and b are coprime positive integers. What is the probability of a+b?
asked by rohit 
math
a family wants to build a pool their yard is 20 yards wide and thirty yards deep. unfortunately, the dealer only deals in liter size pools. what is the biggest size pool they can get?
asked by kara 
maths
6 7 7 divided by 7
asked by rhianna 
maths
6 7 7 divided by 7
asked by rhianna 
Life orientation
Identify and describe 3 environental health hazards that cause ill health,accidents
asked by Unesio 
math 6 grade
A discount store is having a sale on CDCs.7 CDs cost $65.45 ,what is the price per CD?
asked by carina 
Algebra
When factoring an equation, how do I know if the result is prime? For example, I have a problem x^2  2x + 4 and I think it is prime because I can't solve it. Am I right?
asked by Mary 
Math
Find the area of a figure with the dimensions being 7 1/2 ft x 3 1/4. Please answer and explain.
asked by Anonymous 
English
I'm writing a comparison paper on artworks and I'm just thinking either to write about two women painting (European/modern women) OR two churches Gothic/Romanesque). Which one do you think will have more visual/background information? I was thinking to
asked by Katie 
physics
Two forces acts on a point. 100N at 170⁰ from the txaxis and 150N at 50⁰. Find their resultant force and the direction, from the txaxis.
asked by ehm 
4th math
a game is played with a spinner labeled ad and a cube numbered 16. determine the number of possible outcomes. make a tree diagram.
asked by pollo 
college algebra
I need help solving this equation. 3√z+1=3 How do I do this problem? Thanks for your help.
asked by Anonymous 
math
y1=6+2x x1 y1 3 ? 2 ? 1 ?
asked by lily 
math
what is 5/12+7/8
asked by pemba 
maths
Find the number of different ordered quadruples (a,b,c,d) of complex numbers such that a^2=1 b^3=1 c^4=1 d^6=1 a+b+c+d=0
asked by stranger 
math
y1=6+2x x1 y1 3 ? 2 ? 1 ?
asked by lily 
Information Litreacy
Search engines are most useful for finding?
asked by Anonymous 
Probabilities
A bag contains 150 balls numbered 1 through 150 . Three balls are drawn and placed on the table. The probability that the balls were drawn in increasing order can be expressed as a/b where a and are coprime positive integers. What is the value of a+b
asked by Anna 
Math
If a data set is: 18, 9, 14, 10, 15.... What would be the mean absolute deviation? What I got was 13.2, but it seems incorrect. Please help!
asked by Ginny 
Math
5+5*9/56 How do I fing this in the order of operations?
asked by DomoOrregatoMrRoboto 
Maths
Let f(x)=x^2 1 . How many distinct real roots are there to f(f(f(x)))
asked by Anna 
7th Grade Language Arts
Cultural context involves all of the following except the group's __________. (1 point) values wealth customs I think its wealth.. but not sure, am i correct?
asked by Gabby 
computers
what is a softeware and it is uses.
asked by mohdwhid 
Choosing Numbers That Sum to 50
What is the largest possible integer that can be chosen as one of five distinct positive integers whose average is 10?
asked by please help me out!! 
math
This is a matrix question. R is the matrix (3r 1) (s 2s) 1. State, in terms of s and r the determinant of R 2. If r=1/3 and s=4 determine the inverse of R 3.State the pair of r and s not including 0, which would make the matrix R a singular matrix
asked by lindsay 
CHEMYSTRY
HOW YOU CAN PREPAIR 1M OF SODIUM CHROLIDE IN 250CMCUBE
asked by NAYLA 
Math 0098
U^2/3 Over U^2/3 Simplify. The fractions are powers just so you know.
asked by Anonymous 
math
what is 0.06% of 250? show me the problem
asked by doretha 
Math
Ryan is making an apple design with 28 stencils.the bottom 3 row are shown at the rigth. How many more rows will Roy need to put on top to complete the pattern?
asked by Pietro