# Zoe

Popular questions and responses by Zoe-
## math!

Frank has baseball practice every 4th day and choir practice every 6th day. When will he have baseball and choir practice on the same day?

*asked on March 21, 2018* -
## Art

Many different techniques can be used to attract the viewer's attention. What element of art was used in this image to create emphasis on the girl? A. texture B. color C. negative space D. curved lines*** What principle of design is present in this image?

*asked on November 13, 2018* -
## Chemistry

Could you please explain how electronegativity works and how you find the total electronegativity value of PO3 K2O H2S GIVEN: P- 2.1, O-3.5, K- 0.8, H- 2.1, and S- 2.5 Also how to you tell if the compound is ionic, polar covalent, or non polar covalent?

*asked on October 30, 2013* -
## Science

Which unit us used to measure mass in the metric system? Pound Slug Ounce Gram I got ounce

*asked on October 23, 2019* -
## Math

Transplant operations have become routine. One common transplant operation is for kidneys. The most dangerous aspect of the procedure is the possibility that the body may reject the new organ. There are several new drugs available for such circumstances

*asked on July 30, 2019* -
## Math

Which term best completes this statement? All ______ are rectangles A. parallelograms** B. squares C. rhombi D. none of the above Which term makes this sentence true? ___ rectangles are squares A. All B. Some** C. No D. none of these The figure below is a

*asked on February 16, 2016* -
## 4th grade math

what is 5/6 of 288

*asked on March 12, 2012* -
## physics

A surveyor measures the distance across a straight river by the following method. Starting directly across from a tree on the opposite bank, she walks 90 m along the riverbank to establish a baseline. Then she sights across to the tree. The angle from her

*asked on October 4, 2009* -
## Physics

Assume it takes 6.00 minutes to fill a 45.0 gal gasoline tank. (1 U.S. gal = 231 in.3) I don't know how to solve for part C. (a) Calculate the rate at which the tank is filled in gallons per second. ANSWER: 0.125 (b) Calculate the rate at which the tank is

*asked on October 4, 2009* -
## chemistry

A sample of natural gas is 85.2% methane, CH4, and 14.8% ethane, C2H6, by mass. What is the density of this gas mixture at 18.0°C and 771 mmHg? Assume ideal gas behavior.

*asked on October 31, 2012* -
## Chemistry

Determine the partial pressure of oxygen necessary to form an aqueous solution that is 7.7 x 10-4 M O2 at 25oC. The Henry's Law Constant for oxygen in water at 25oC is 1.3 x 10-3 M/atm

*asked on February 7, 2012* -
## Math

I'm a little confused on how we are supposed to describe the transformation for a horizontal stretch. ex. -1/2 f(1/3x+2)-6 - vertical compression by a factor of 1/2 - horizontal stretch by a factor of 3 (is this how you would write it? Also is horizontal

*asked on August 11, 2020* -
## Physics

Four charged particles are at the corners of a square of side a, as shown in the figure below. (A = 4, B = 5, C = 5.) (a) Determine the magnitude and direction of the electric field at the location of charge q. (Use k_e for the Coulomb constant and q and a

*asked on February 1, 2010* -
## Physics

A proton accelerates from rest in a uniform electric field of 620 N/C. At one later moment, its speed is 1.30 Mm/s (nonrelativistic because v is much less than the speed of light). (a) Find the acceleration of the proton. m/s2 (b) Over what time interval

*asked on February 1, 2010* -
## Math

A child’s sandpit is rectangular with dimensions 2m x 1.5m. The sandpit is surrounded by a grassed area of uniform width covering an area of 24.5m^2 Calculate the uniform width of the grassed area

*asked on January 15, 2020* -
## Maths

A rectangular field is 2.45m long and 1.62m wide. What is the perimeter of the rectangular field

*asked on November 2, 2015* -
## Pre-Algebra

You are a member of a fund raising committee for your school. The committee is sponsoring a fair. Each member of the committee has agreed to sell 50 tickets to the fair. Student tickets are $3 each and adult tickets are $5 each. Use an expression to

*asked on September 27, 2015* -
## math-percentage

there are 792 workers in a factory. if the number of male workers is 20%less than that of female workers, then the number of male workers is? answer:352 i always get confused with the equation of this type of quesion. Thanks:)

*asked on July 10, 2015* -
## Math

The price of a movie ticket is half the normal price on Tuesday. If the normal price is $8.50, how much would 4 tickets cost on Tuesday? We have to make it so you're multiplying fractions, not some other way. I really don't get it.!

*asked on April 2, 2015* -
## Science

A circular hatch in the hull of a submarine has a radius of 40.0 cm. The submarine is 850.0 m under water. If atmospheric pressure above the ocean is 1.01 x 105 Pa and the air pressure inside the submarine is 1.31x 105 Pa, what net force is exerted on the

*asked on December 19, 2011* -
## calculus

find the centroid of the plane region bounded by the curves y = cos x, y=sinx, x=0,

*asked on October 31, 2011* -
## Physics

The water in a river flows uniformly at a constant speed of 2.53 m/s between parallel banks 69.8 m apart. You are to deliver a package directly across the river, but you can swim only at 1.74 m/s. (a) If you choose to minimize the time you spend in the

*asked on October 12, 2009* -
## Finite Math

A "hand" consists of a set of 5 cards selected from an ordinary deck of 52 cards: (1) How many different hands contain exactly 4 diamonds? = 27885 (2) How many different hands contain exactly 4 cards of the same suit (any of the four suits)? (3) How many

*asked on February 24, 2009* -
## Biology

Translation is the process by which the sequence (1 point) A. of bases of an mRNA is converted into the sequence of amino acids of a protein. B. of bases of tRNA is converted into cytoplasm before attaching itself to polypeptide. C. of bases of tRNA is

*asked on January 6, 2020* -
## math

what is $10.20 −m = $3.46 ?!

*asked on October 8, 2019* -
## History

The_____________ Agricultural Revolution began when nomadic hunters started farming during the Neolithic era.

*asked on June 25, 2019* -
## Science

So is the reason why scientists don’t like to use the word artificial because artificial receptors or anything else artificial does the same exact job as something natural so scientists belive it shouldn’t need a distinction?

*asked on June 6, 2018* -
## maths

Sam wants to build a wooden deck on his patio, which is in the shape of a parallelogram. The area of the patio is 280 ft2. Find the width. Round your answer to the nearest foot.

*asked on July 13, 2016* -
## Math

Name the 2-digit number: -The ones digit is three times the tens digit. -Both digits are even.

*asked on September 6, 2015* -
## Math

Equation: t=5(logP/log0.5) P is the percentage of caffiene in the bloodstream related to t, time elapsed in hours Suppose you drink a cup of coffee at 9:00 a.m. What percentage of the caffiene will remain in your body at noon?

*asked on January 12, 2015* -
## physics

wave speed: the violin is a four stringed instrument tuned so that the ratio of the frequencies of adjacent strings is 3:2. (This is the ratio when taken as high frequency to lower frequency.) If the diameter of E string (the highest frequency) on a violin

*asked on December 3, 2012* -
## chemistry

If 4.83 mL of an unknown gas effuses through a hole in a plate in the same time it takes 9.23 mL of argon, Ar, to effuse through the same hole under the same conditions, what is the molecular weight of the unknown gas?

*asked on October 31, 2012* -
## Math help quickly

Use the expressions for left and right sums and the table below. right-hand sum = summation (n above and i =1 on the bottom) f(ti) * change in t = f(t1) * change in t + f(t2) * change in t + .... + f (tn) * change in t left-hand sum = summation (n above

*asked on March 13, 2012* -
## calculus

fin derivative of the function (t+e^t)(4- sqrt t)

*asked on June 26, 2011* -
## calculus

differentiate the following funcation: R(t) = (t + e^t)(4- sqrt (t))

*asked on June 26, 2011* -
## Chemistry

Ammonium carbonate decomposes upon heating according to the following balanced equation: (NH4)2CO3(s)-->2 NH3(g)+CO2(g)+H2O(g) Calculate the total volume of gas produced at 25 C and 1.07atm by the complete decomposition of 11.86 g of ammonium carbonate.

*asked on April 16, 2010* -
## Physics

The water in a river flows uniformly at a constant speed of 2.53 m/s between parallel banks 69.8 m apart. You are to deliver a package directly across the river, but you can swim only at 1.74 m/s. (a) If you choose to minimize the time you spend in the

*asked on October 12, 2009* -
## math

Hi, I wrote the first one wrong... The hawks won 17 more hockey games than they lost. They played 52 games in all and had 3 ties. How many games did they lose? This is what I did so far... 52 games ...-17 ------ 35 okay now there is 3 ties??? so they had

*asked on October 8, 2009* -
## Physics

A person walks first at a constant speed of 4.70 m/s along a straight line from point A to point B and then back along the line from B to A at a constant speed of 2.80 m/s. (a) What is her average speed over the entire trip? (b) What is her average

*asked on October 8, 2009* -
## math

Three coins are selected from 10 coins: 4 dimes, 4 nickels, and 2 quarters. In how many possible ways can the selection be made so that the value of the coins is at least 25 cents? I know that the total outcomes equals 120, but how do I find how many of

*asked on February 21, 2009* -
## History

Was Venice, Italy always flooded by water? Was it made on-top of the ocean, or was it made, and later flooded?

*asked on October 13, 2007* -
## Science

The density of an object with a volume of 60.0mL and mass of 400.0g is 1 0.150 g/mL 2 2.89 g/mL 3 5.50 g/mL 4 6.67 g/mL ***

*asked on December 10, 2019* -
## Algebra 2

Use a matrix to solve each system -2x + 4y +3z =22 2x +z = -19 4x + 4y +6z =-4

*asked on November 13, 2019* -
## Math

A drug testing company advertises a test for steroids that is 93.5% effective at detecting steroid use. It has a true negative effectiveness of 93.5%. Suppose 8% of 10,000 professional cyclists are believed to be using steroids. Suppose the haplessly named

*asked on August 1, 2019* -
## math

The top-selling Red and Voss tire is rated 70000 miles, which means nothing. In fact, the distance the tires can run until wear-out is a normally distributed with a mean of 71200 miles and a standard deviation of 1000 miles. Express your answers rounded

*asked on July 25, 2019* -
## science

Which of the following materials is a good conductor of electric current? A-Glass pane B-Wooden spoon C-Silver spoon D-Rubber tire

*asked on April 19, 2017* -
## Chemistry

heating cyclopropane (C3H6) converts it to propene (CH2=CHCH3). The rate law is first order in cyclopopane. If the rate constant at a particular temp is 6.22x10^-4 s^1 and the concentration of cyclopropane is held at .0300 mol/L, what mass of propene is

*asked on April 11, 2017* -
## math

Dina can make six bracelets in an hour. At the same rate, how many bracelets could she make in each allotted time listed in the table? Separate each answer with a comma.

*asked on November 21, 2016* -
## math

Vanessa deposited money into a bank account that earned 1.25% simple interest each year. After 1/2 year, she had earned $5.00 in interest on the account. If no other money was deposited into or withdrawn from the account, how much was her initial deposit?

*asked on November 16, 2016* -
## Math120

A golf ball is selected at random from a golfn bag. If the golf bag contains 5 red balls, 6 orange balls and 9 black balls, find the probability of the following event. The golf ball is red or orange.

*asked on May 16, 2016* -
## Algebra

Let A= {3, 7, 2}. List all the subsets of A

*asked on April 4, 2016* -
## Math

Ariel deposits $5000 in an account that earns simple interest at an annual rate of 3%. Travis deposits $5000 in an account that earns compound interest at annual rate of 3%

*asked on March 8, 2016* -
## Precal

Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to two decimal places where appropriate.) cos θ = 0.16 I know how to find the answers when it's in fraction form, however, I do not know how to do

*asked on November 4, 2015* -
## Math (pre Algebra)

The perimeter of a rectangle picture frame is 30 inches. The length of the frame is three less than twice the width. What are the dimensions of the frame? I know that the perimeter is 30 in., the length is 2w-3, and the width is w, but I don't know what to

*asked on October 11, 2015* -
## Math

Write two mixed numbers with a sum of 3.

*asked on March 18, 2015* -
## Trig

Determine exact solution. x E (0, 2pi) 2csc^2x-8=0

*asked on November 25, 2014* -
## math

The perimeter of a rectangular playground is 40 yards. It is 1.5 yards longer that it is wide. What is area of playground?

*asked on February 11, 2013* -
## science (revision)

I have a test on electricity on Friday and I wandering if I could get a basic summary of what I should know. I'm British so I don know what grade I am but I'm 11 so aound that sort of basic level please!!! Thanks.

*asked on January 9, 2013* -
## physics (SOS!)

a cylinder that is 20 cm tall is filled with water. If a hole is made in the side of the cylinder, 5cm below the top level, how far from the base of the cylinder will the stream land? Assume that the cylinder is large enough so that the level of the water

*asked on December 2, 2012* -
## mathematics of finance

solve; FV=7,000;i=0.03;PMT=$400;n=?

*asked on September 24, 2012* -
## Calculus need help badllyyy!

Use the expressions for left and right sums and the table below. right-hand sum = summation (n above and i =1 on the bottom) f(ti) * change in t = f(t1) * change in t + f(t2) * change in t + .... + f (tn) * change in t left-hand sum = summation (n above

*asked on March 13, 2012* -
## 4th grade math

what is 5/6 of 288

*asked on March 12, 2012* -
## calculus

i'm not sure how to do this. can someone help, please? thanks! consider the function f(x0 = x^2 + 2x on the interval [-2, 2] a. draw a sketch of the graph of f(x). find the average rate of change on the interval [-2, 2] and sketch this secant line. b. find

*asked on November 27, 2011* -
## calculus

let f(t) = 2*pi*t + sin(2*pi*t) a) find value of t in open interval (0,2) for which the tangent line at (t, f(t)) is parallel to the line through (0,0( and (2, 4pi) b) suppose the given funtion describes the position of a particle on the x-axis for 0

*asked on November 1, 2011* -
## Fourth grade math

What's range mean?

*asked on October 27, 2011* -
## chemistry.

in the titration between Na2CO3 and HCl... 1) at the first end point what reaction is stoiciometrically complete? 2)At the start of titration where HCl=0 is the solution acidic or basic. ExPlain? 3) At the 2nd end point what reaction is stiociometrically

*asked on March 13, 2011* -
## chemistry urgent

Draw major product of substitution reaction of (2R,3S)2-bromo-3-methylpentane with CH3CH2O- nucleophile

*asked on March 7, 2011* -
## Organic chemistry

Draw major product of substitution reaction of (2R,3S)2-bromo-3-methylpentane with CH3CH2O- nucleophile?

*asked on March 6, 2011* -
## math

find the values of x and y that solve the system of equations -3 x- 8y=19 4x+9y=-22

*asked on November 29, 2010* -
## CRT205

(I did not get some answers correct on this categorizing fallacies assignment. It was graded but not with the correct answers. Can someone help me by telling me which type of fallacies the below statements are please so I can understand better. Thank you!)

*asked on March 8, 2010* -
## Physics

A particle executes simple harmonic motion with an amplitude of 9.00 cm. At what positions does its speed equal two thirds of its maximum speed? I got: v2 +ω^2x^2 =ω^2A^2 vmax =ω A and v = ωA/2?

*asked on January 4, 2010* -
## computers

in which program does the default show you the hierarchy of drives, folders, and files in a split window

*asked on July 9, 2009* -
## Psychology

Change your thinking(Title of my reseach paper) How do I plan to support my thesis with compelling arguments and counterarguments. My thesis statement is," Even though we experince situation that demonstrate this simple principle- the way we think

*asked on May 7, 2008* -
## spanish

I need to describe my spring break in Spanish day by day. I think she said present-tense, I copied this chart off the board. AR Yo e Nos amos ER Yo e Nos imos-emos Is that present? So my question is, in that tense, how would I say "I go"?

*asked on April 7, 2008* -
## Math

How do you write equations for perpendicular lines? I will assume you know how to find the equation of a line if you know the slope and a point on that line. The key thing to remember is: Two perpendicular lines have slopes that are opposite reciprocals of

*asked on July 22, 2007* -
## math

How much is Zone five dollar bill, seven quarters, and six dimes?

*asked on June 25, 2020* -
## physics

the symbol for acceleration is a and the symbol for time is t if a = 23t^2 and t is ≥ 0, then what is t?

*asked on April 1, 2020* -
## Physics

An archer shoots at an angle of 11 degrees from the horizontal at an initial speed of 31.8m/s. Ignoring air resistance, determine a) the time it will take for the arrow to strike the ground b) the range of the arrow

*asked on April 1, 2020* -
## social studies

which belief or practice is not shared by buddhism

*asked on February 10, 2020* -
## Biology

If an organism had a mutation in a gene that codes for a ribosomal protein, which of the following would be affected? A: DNA replication B: transcription C: translation D: gene expression Pls help

*asked on January 3, 2020* -
## History

How has history changed or shaped the country Spain

*asked on December 26, 2019* -
## Science

A 54-gram sample of an unknown material has a volume equal to 20 20 cm 3. what is the identity of the substance? a.lead b.steel*** c.aluminum d.mercury An ice cube, a glass of cold water, and a swimming pool are each exposed to the same amount of sunlight

*asked on December 10, 2019* -
## Math

Find the GCF of the numbers 24 and 66. 1. 90 2. 264 3. 6 4. 12 ***

*asked on December 10, 2019* -
## Math

You walked 2⁄15 miles from your chemistry class to your economics class at a constant speed of 0.8 miles per hour. How long did this take you?

*asked on October 16, 2019* -
## Math

How long will it take a passenger train traveling at 160 miles per hour to travel from Denver, Colorado to Lincoln, Nebraska? The distance between the two cities is 488 miles.

*asked on October 16, 2019* -
## World History

Which accurately describes successors of the Arab Empire following the death of Muhammad? Members of the Boko Haram clan served as caliphs following the death of Muhammad. Members of the Umayyad clan served as caliphs following the death of Muhammad.

*asked on June 11, 2019* -
## World History

Which options accurately describe cultural practices of the Byzantine and Arab Empires? I think its a and c

*asked on June 11, 2019* -
## SS

Which of the following statements best describes the spread of Islam during the Arab conquests? A. Islam spread only within the lands conquered by Arabs. B. Everyone in conquered lands was forced to convert to Islam. C. Few non-Arabs ever converted to

*asked on October 31, 2018* -
## algebra 1

jeff invested $3000 in an account that earns 6.5% intresest , compounded annually. the formula for compound intrest is A(t)=P(1+l)^t

*asked on July 22, 2018* -
## Science

Why do scientists not like to use the word “artificial”?

*asked on June 6, 2018* -
## Chemistry

A 3.68 L sample of methane gas is collected at 36.0 degrees C. Predict the volume of the sample at 0 degrees C.

*asked on May 14, 2018* -
## math

There is a 25% discount on a 50-inch TV that sells for $349. Sales tax is 4%. How much is the total cost after tax?

*asked on January 23, 2018* -
## math

If given a map that has a scale factor of 5 in. equals 29 mi., how far apart on the map are two cities that are 87 miles apart in distance? I don't even know a thing –_–

*asked on January 23, 2018* -
## physics!!!

The speed limit around a curve of radius 85 meters is 30 miles per hour. What angle should the curve be banked at if a car is to be able to go around the curve at that speed with no friction? Help!!!

*asked on October 30, 2017* -
## social studies

Which member of the Five Civilized Tribes did the Indian Removal Act seem to target the most? A) Apache B) Catawba C) Cherokee D) Iroquois

*asked on April 21, 2017* -
## Algebra

Set up and solve a system of equations for each problem John and Belinda are selling pies for a school fundraiser. Customers can buy apple pies and cherry pies. John sold 3 apple pies and 9 cherry pies for a total of $183. Belinda sold 6 apple pies and 13

*asked on February 12, 2017* -
## Algebra

Steve and Belinda are selling pies for a school fundraiser. Customers can buy apple pies and cherry pies. John sold 3 apple pies and 9 cherry pies for a total of $183. Belinda sold 6 apple pies and 13 cherry pies for a total of $276. What is the cost each

*asked on February 12, 2017* -
## Algebra

For each problem suppose y varies directly with x. Write a direct variation equation that relates x and y. y=6 when x=8

*asked on February 5, 2017* -
## physics

If your car goes from 0 mi/h to 70 mi/h in 8 s, what is your average acceleration? Answer in units of miles/(hours x seconds ).

*asked on November 19, 2016* -
## Chemistry

How to prepare 250ml of 2.5m solution of HCL

*asked on October 25, 2016*