# Liz

Newest questions and responses by Liz-
## math

Jamie invests $500 in an account that is compound continuously at an annual rate of 5% according to the formula A=Pe^rt, where A is the amount accrued, P is the principal, r is the rate of interest and t is the time in years. approximately how many years

*asked on March 10, 2019* -
## science chemistry

if a 0.625g sample of magnesium chloride is dissolved in water and then precipitated with a silver nitrate solution,how many grams of silver chloride precipitate would be collected?

*asked on November 27, 2018* -
## geography

Which options describe Chinese developments in mathematics? (Select all that apply.) Prior to inventing numbers, the Chinese method of number writing used clusters of short vertical or horizontal lines for digits. The Han Dynasty invented calculus, even

*asked on October 25, 2018* -
## math

On one side of a scale there is a 1-kg weight and half of a brick. On the other side there is one full brick. The scale is balanced. How many kg does the brick weigh? Try to present at least 2 methods to solving this problem. How does this problem help to

*asked on October 21, 2018* -
## Jewelry

Found a gold ring engraved with cop 91© 8 on it, what does this mean? And is there any worth to it

*asked on August 29, 2018* -
## algebra 2

Your membership at a movie rental club costs $12.7 per year. The charge for members to rent a movie is $2.29. At the end of the year you figured that the average cost per movie (including the membership fee) was $2.46. How many movies did you rent?

*asked on June 6, 2018* -
## algebra 2

Your membership at a movie rental club costs $12.7 per year. The charge for members to rent a movie is $2.29. At the end of the year you figured that the average cost per movie (including the membership fee) was $2.46. How many movies did you rent?

*asked on June 6, 2018* -
## algebra 2

Your membership at a movie rental club costs $12.7 per year. The charge for members to rent a movie is $2.29. At the end of the year you figured that the average cost per movie (including the membership fee) was $2.46. How many movies did you rent?

*asked on June 4, 2018* -
## algebra 2

A field goal kicker has made 21 out of 30 attempted field goals so far this season. His field goal average is 0.7. How many consecutive field goals must he make to increase his average to 0.8125?

*asked on June 4, 2018* -
## Calc Desperate

can anyone help me with the last problem # 14 Find the volume of the given solid generated by revolving the regions bounded by the graphs of the equations about the given lines. 14. y=6-2x-x^2, y=x+6 a. the x-axis b. the line y=3

*asked on February 23, 2018* -
## Science Biology

Help please reviewing for test and in my notes I have a comment. Animal cell oraganella are larger than plant cell organella is this correct - I have searched everything and cant find an answer.

*asked on February 19, 2018* -
## Calculus

Can someone check my work and answer? Evaluate the integral from -1 to 0 of (4x^6+2x)^3(12x^5+1)dx My work: let u=4x^6+2x dx=du/24x^5+2 now we have the integral from -1 to 0 of u^3(12x^5+1)(du/24x^5+2) Simplifies to the integral from -1 to 0 of

*asked on February 18, 2018* -
## Algebra 2

According to a survey conducted in 1990 by Independent Sector, the percent of their incomes that Americans give to charities is related to their household incomes. For families with annual incomes between $5000 and $100,000, the percent is modeled by P =

*asked on February 9, 2018* -
## Physics

The radius of the Earth is about 6.37 × 106 m. a) What is the centripetal acceleration of a point on the equator due to the rotation of earth about its axis? Answer in units of m/s 2

*asked on February 8, 2018* -
## algebra

The coordinate plane below represents a town. Points A through F are farms in the town. graph of coordinate plane. Point A is at 2, negative 3. Point B is at negative 3, negative 4. Point C is at negative 4, 2. Point D is at 2, 4. Point E is at 3, 1. Point

*asked on January 28, 2018* -
## Biology

Which zone is home to some decomposers, but no producers?

*asked on December 19, 2017* -
## Statistics

The class average on the quarterly exam was65% with a standard deviation of 7%. Is the probability that a student got 70% or higher 24%

*asked on December 7, 2017* -
## 11th Grade Math

k. (64 to the root of 3)^4 l. (3 to the root of 4)^-8 f. (5^2/5/^2)^-1/2 4. The radius of a sphere r is given in terms of its volume V by the formula: r=(0.75V/π)^1/3 By how many inches has the radius of a spherical balloon increased when tthe amount of

*asked on December 1, 2017* -
## Can anyone speak Turkish Greek

I am doing an a family tree I found a post card to my great great grandma dated 1920 it's from someone to her only two lines but from turkey can anyone help me translate

*asked on July 22, 2017* -
## physics

1. The weight in the following diagram has a mass of 0.750 kg and the cart has a mass of 0.52 kg. There is a friction force of 2.1 N acting on the cart. What is the tension in the string? a. 4.4 N b. 4.3 N c. 4.1 N d. 4.2 N 2. An 8.5 kg block is attached

*asked on June 2, 2017* -
## Physics

1. The weight in the following diagram has a mass of 0.750 kg and the cart has a mass of 0.52 kg. There is a friction force of 2.1 N acting on the cart. What is the tension in the string? a. 4.4 N b. 4.3 N c. 4.1 N d. 4.2 N 2. An 8.5 kg block is attached

*asked on June 2, 2017* -
## physics

A large truck with a mass of 3200 kg is pulling a trailer with a mass of 2400 kg. Both are accelerating at a rate of 0.45 m/s^2 . Determine the tension force between the truck and the trailer, and determine the force with which the truck is pulling. I'm

*asked on June 2, 2017* -
## chemistry- morality

To what volume should 1.19 ml of an 8.00 m acetic acid solution be diluted in order to obtain a final solution that is 1.50 M? show all work

*asked on May 21, 2017* -
## algerbra

i did my question already but i was wondering if someone could double check my work. the question says to graph the following function on the grpah f(x)={|x|, -3 is equal to or less than x less than 2} {2x-8, x less than or equal to 2} i dont know if its

*asked on May 20, 2017* -
## Math MS. SUE PLEASE HELP!!

Rolinda’s first five Spanish test scores are 85, 85, 60, 62, and 59. a. Find the mean, the median, and the mode of Rolinda’s Spanish test scores. Round your answers to the nearest tenth, if necessary. b. Which of these measures best supports

*asked on May 9, 2017* -
## Math MS. SUE PLEASE HELP!!

What is true of a random sample? A) it is the only way to sample a population. B)Each member of the sample is a volunteer. C) It is always the easiest way to sample a population. D) Each member of the population has an equal chance of being selected. MS.

*asked on May 5, 2017* -
## Math, Algebra

A square and rectangle have the same area. The length of the rectangle is five inches more than twice the length of the side of the square. The width of the rectangle is 6 inches less than the side of the square. Find the length of the side of the square.

*asked on May 2, 2017* -
## algerbra

am i correct on this? question: solve and check square of 5x+6 is equal to x work and answer: square each side 5x+6=x^2 subtract 5x-6 on both sides 0=x^2-5x-6 (x+1)(x-6) x+1=0 subtract -1 on each side x= -1 is a reject x-6=0 add 6 on each side x=6 and 6

*asked on April 22, 2017* -
## algerbra

could you please double check my work question:find the roots of the equation 2x^2+8x=12 by completing the square. leave answer in simplest radical form. work and answer: c=(b/2)^2 c(4/2)^2=4 2x^2 +8x=12 divide everything by 2 x^2 + 4x=6 x^2+4x+4=10

*asked on April 22, 2017* -
## careers

When John asked Melanie to babysit Saturday night, he told her that he would pay $7 per hour. She accepted and did the work but has not yet received the money. What type of contract was this? a. implied contract b. unilateral contract c. bilateral contract

*asked on April 19, 2017* -
## Physical Science

Determine how long it will take given the scenario below (in time and in distance) to react to the car in front of you. Assume that the car in front of you takes 3 seconds to change speeds. Reaction time 1.6 seconds Speed: 75 mph Initial velocity: 33.53

*asked on April 12, 2017* -
## math (venn diagrams)

70% of 7 graders have iPhone and 60%are in chorus. However, 15% of 7th graders are neither in chorus or own phone. What % of students have an iPhone and are not in chorus

*asked on April 1, 2017* -
## History

Which number labels Yasmin's native country of Spain? A 1 B 2 C 4 D 6 Which number labels Yasmin's current home in Sweden? A 1 B 3 C 4 D 5 (I am new also :))

*asked on March 31, 2017* -
## math

4cos^2 x - cosx-3 =0 0 to 2pi SORRY TYPED THE QUESTION WRONG PLESSE HELP

*asked on March 30, 2017* -
## state & local government

1. Why have the powers of the governor increased in modern times?

*asked on March 17, 2017* -
## geography

New Zealand and Papua New Guinea have a. huge manufacturing industries. b. lush, tropical climates that produce many kinds of tropical fruit. c. valuable timber resources. d. very limited timber resources and poor soil.

*asked on January 29, 2017* -
## Physics

A father and son were both pulling a red wagon at a magnitude of 61 lbs. at 139 degrees . The son pulled at a magnitude of 22 lbs. What was the magnitude of the fathers force ( component vector ?

*asked on January 17, 2017* -
## Math

It takes 2 hours to travel 30 miles by bike.how long will it take to travel 105 miles?

*asked on January 16, 2017* -
## trigonometry

The angles of elevation to an airplane from two points A and B on level ground are 50◦ and 67◦ , respectively. The points A and B are 3.9 miles apart, and the airplane is east of both points in the same vertical plane. Find the altitude of the plane.

*asked on January 11, 2017* -
## statistics

A music industry researcher wants to estimate, with a 90% confidence level, the proportion of young urban people (ages 21 to 35 years) who go to at least 3 concerts a year. Previous studies show that 21% of those people (21 to 35 year olds) interviewed go

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

The triangle in the trapezoid share a 15 inch base and a height of 10 inches. The area of the trapezoid is less than twice the area of the triangle. Find the values of X. X is greater than --- and x is less than 15 inches.

*asked on November 11, 2016* -
## lang. arts

What is a catchy title for an essay about greed?

*asked on November 8, 2016* -
## Calc One

The function C(m) = -.41m^2 + 6.7m - 44/ .7m represents Miles Traveled per lb. of CO 2 released as a function of speed(in MPH) for a hyundai Sontana. the domain of this function is [10,90]. A) calculate C'(m) B)find the critical points of C(m). C)Where

*asked on November 6, 2016* -
## algebra

if sin alpha is 0.28° where 0° is less than or equal to alpha less than or equal to 90°, evaluate cos alpha, tan alpha, sec alpha, cosec alpha and cot alpha. please help, it's urgent.

*asked on October 26, 2016* -
## Chemistry

The compound copper(II) nitrate is a strong electrolyte. Write the reaction when solid copper(II) nitrate is put into water:

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

uncle gives baby 25 dollars on her first birthday, 50dollars on second doubling act each year. I need help with an equation

*asked on October 1, 2016* -
## chemistry

A solution contains a mixture of pentane and hexane at room temperature. The solution has a vapor pressure of 252 torr . Pure pentane and hexane have vapor pressures of 425 torr and 151 torr, respectively, at room temperature. What is the mole fraction of

*asked on September 24, 2016* -
## english

Netta and Jim argued over their views of free trade. 2. Netta and Jim had different views on free trade. 3. Netta and Jim were sharply split over the issue of free trade. 4. Netta and Jim refused to discuss the issue of free trade. 16. In these four

*asked on September 21, 2016* -
## Math

Compare the values of each of the digits 337 The 3 in the tens place is ---------the value of the 3 in the hundreds place.

*asked on September 19, 2016* -
## math

A point P is 500m from the base of a pole. If the angle of elevation of the top of the pole to the point P is 40 degrees, find the height of the pole

*asked on August 30, 2016* -
## Pre-Calculus

Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x - y + 3z = 12 x + 4y + 6z = -32 5x + 3y + 9z = 20 Please help me..

*asked on June 2, 2016* -
## Pre-Calculus

Solve the system by the substitution method. Show your work. 2y - x = 5 x2 + y2 - 25 = 0 I solved the problem but I got it wrong for some reason..can you solve it step by step?

*asked on June 2, 2016* -
## Pre-Calculus

Locate the foci of the ellipse. Show your work. x^2/36+y^2/11=1 c^2=a^2-b^2 c^2=36-11 c^2=25 c= ± sqrt25 c= ±sqrt5*5 is this correct?

*asked on June 2, 2016* -
## Pre-Calculus

Find the vertical asymptotes, if any, of the graph of the rational function. Show your work. f(x) = (x-4)/(x(x-4)) (x-4)/x(x-4) the common factors cancel out and all is left is f(x)= 1/x... how do I solve this problem?

*asked on June 1, 2016* -
## History

Which factor contributed most to Florida becoming a U.S. territory? a. the outcome of the Seminole Wars b. the weakening of Spain's hold over its colonial possessions c. the desire of Southern politicians to expand slavery into new territories d. the

*asked on May 28, 2016* -
## Pre-Calc

Find the vertical asymptotes, if any, of the graph of the rational function. Show your work. f(x) = (x-4)/(x(x-4)) How would I show my work? the x-4 cancel out and I am left with 1/x. The vertical asymp. is x= 0

*asked on May 24, 2016* -
## Pre-Calc

For the data set shown by the table, a. Create a scatter plot for the data. (You do not need to submit the scatter plot) b. Use the scatter plot to determine whether an exponential function or a logarithmic function is the best choice for modeling the

*asked on May 24, 2016* -
## Pre-Calc

Verify the identity. Show your work. cot2x + csc2x = 2csc2x - 1 1+cosec^2x +cosec^2x Cot^2x+cosec^x= 1+2 cosec^2x Would this be correct?

*asked on May 24, 2016* -
## Math

Solve the equation on the interval [0, 2π). tan2x sin x = tan2x would it be 0, pi/2 ?

*asked on May 23, 2016* -
## Math

Solve the equation on the interval [0, 2π). cos x + 2 cos x sin x = 0 would the answer be 7pi/6 , 11pi/6 ?

*asked on May 23, 2016* -
## Math

The pH of a solution ranges from 0 to 14. An acid has a pH less than 7. Pure water is neutral and has a pH of 7. The pH of a solution is given by pH = -logx where x represents the concentration of the hydrogen ions in the solution in moles per liter. Find

*asked on May 23, 2016* -
## Math

In the formula d=rt d represents distance in miles, r represents average speed in miles per hour, and t represents time in hours.What is an automobiles average speed if it travels 60 in 1 1/2 hours?

*asked on April 27, 2016* -
## maths

ken has 4 times as much money as Jake. if Jake gave Ken £360 he would still have more money than Ken. whats the least money Ken will have?

*asked on April 14, 2016* -
## Math

A car dealer makes a 12% commission on every car sold. If the dealer sells a car for $10,000, how much does he make in commission?

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

If 100 students are surveyed, about how many students own 2 or more pets? Explain please 0 pets __________ 1/20 1 pet __________ 1/2 2 0r more _______ 9/20 Thank you very much

*asked on March 23, 2016* -
## Biology

How do I set up a trihybrid punnett square if the cross is TTRRPp x TtRrPp?

*asked on March 12, 2016* -
## cHEMISTRY

What mass of AgCl(143.32g/mol) is formed from the reaction of a 0.109 M MgCl2 solution with excess AgC2H3O2?

*asked on February 29, 2016* -
## Geometry

How would one solve similar right triangles if the first triangle has y and x as legs and a (altitude) as hypotenuse, and the second triangle has one leg of 50, the other is a, and the hypotenuse is 100. I solved for a, and it came out to be 86.6? Is this

*asked on February 8, 2016* -
## Algebra

The sum of measures of angle X and angle Y is 90. If the measure of angle X is 30 less than twice the measure of angle Y, what is the measure of angle X?

*asked on January 20, 2016* -
## Math

inverse laplace transform of {5/(s-4)^3}

*asked on November 28, 2015* -
## business calc.

The management of Ditton Industries has determined that the daily marginal revenue function associated with selling x units of their deluxe toaster ovens is given by the following where R '(x) is measured in dollars/unit. Rtext( )'\(x\) = -0.1x + 40 (a)

*asked on November 13, 2015* -
## health information law and ethics

Advance directives are defined by your readings as written instructions recognized under state law, such as living wills or durable powers of attorney for health care, that relate to the kind of health care the patient wishes to have or not have when

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

Lindsay has 10 inches of ribbon. She buys another three lengths of ribbon, each 5 inches long. How much ribbon does she have now?

*asked on November 3, 2015* -
## Chemistry

Determine the number of grams of water in 7.00 g of copper(II) sulfate pentahydrate.

*asked on November 2, 2015* -
## Chemistry

An experiment requires 0.34 M NH3(aq). The stockroom manager estimates that 15 L of the base is needed. What volume of 15 M NH3(aq) will be used to prepare this amount of 0.34 M base?

*asked on November 1, 2015* -
## Math

Working together two people can cut a lawn of grass in 5 hours. One person can do the job alone in 1 hour less than the other. How long would it take the faster person to do the job?

*asked on October 8, 2015* -
## AP Statisics

Joe scores 1770 on the SAT. Assuming that both tests measure the same thing, what score on the ACT is equivalent to Jose's SAT score? Explain.

*asked on October 2, 2015* -
## chemistry

When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 14.4 g of carbon were burned in the presence of 55.2 g of oxygen, 16.8 g of oxygen remained unreacted. What mass of carbon dioxide was produced?

*asked on September 27, 2015* -
## public speaking

when deciding on the topic, it is important to consider

*asked on September 16, 2015* -
## Math

Describe a real-world problem that can be solved using the expression 29 divided by (3/8 + 5/6). Find the answer in the context of the situation. I know the answer is 24, however I cannot think of an expression to go along with this.

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

Amy is building a house. The basement floor is at -15 feet. The roof of the house is above the ground 25 feet. Express the comparison of heights as an inequality. Explain the meaning of the inequality.

*asked on September 2, 2015* -
## Math

Amy is building a house. The basement floor is at -15 feet. The roof of the house is above the ground 25 feet. Express the comparison of heights as an inequality. Explain the meaning of the inequality.

*asked on September 2, 2015* -
## Physics

A force of 64 N is applied on a body producing an acceleration of 2.4 m/s^2. What is the mass of a body?

*asked on August 29, 2015* -
## Math

Decompose 28*6 to make it easier below. Paula had a block of cream cheese that was 2 inches wide, 5 1/2 long and 1 1/2 inches tall. Paula used 1/2 of the cream cheese in her recipe. How many cubic inches of cream cheese did she use?

*asked on August 23, 2015* -
## math

Which symbol is used to make -6? |-8| a true statement? A. > B. < C. = Is the answer B? Thank you

*asked on August 21, 2015* -
## Math

Which set of integers are in the right order from least to greatest? A. -8,8,6,|-7|,5 B. |-7|,-8,8,6,5 C. -8,5,6,|-7|,8 D. 5,6,8,-8,|-7| Is the answer b? Thank you

*asked on August 21, 2015* -
## Chemistry

Calculate the pH of a potassium phosphate buffer if the pKa of KH2PO4 is 7.2 and the acid-base ratio is 2:1 I took Chemistry 7 years ago and am in a review for a Biochem course I am takin. I do not remember the basics so any help with how to get started or

*asked on August 18, 2015* -
## Algebra

I have a problem that reads as: -4x-2y=12 4x+8y=-24 And when solved the answer is (2,-2), but I checked the answer in the back and it says (6,-6) How does that WORK??

*asked on August 18, 2015* -
## Social studies.

The earliest type of trade was A. Bartering B. Currency C. Economies D. Cowry shell currency Is the answer A? Thank you

*asked on August 18, 2015* -
## Language Arts

Identify the antecedent for the underlined pronoun in the sentence below. The boy was excited about his date with Sheila, but he didn't know how (it) would turn out. It is underlined A. boy B. date C. Sheila Is the answer B? Thank you

*asked on August 18, 2015* -
## Math

What is the 11th term of the following geometric sequence? Enter a whole number 7/9,-7/3,7,-21,63

*asked on August 1, 2015* -
## stats

1)Suppose that the weight of tomato juice in mechanically filled cans follows a normal distribution with a mean of 464 grams and a standard deviation of 8 grams. a)A random sample of size n = 18 cans is taken. Will the sampling distribution of the sample

*asked on June 28, 2015* -
## philosophy

What is the notion “good” mean for Kant? How does this lead him to the categorical imperative (provide and fully explain at least two formulations)? Provide example(s) of your own regarding how one might use the categorical imperative to determine a

*asked on June 20, 2015* -
## philosophy

How are values established according to Hume? What human characteristics does he privilege in determining a value system and how do they inform our morality? How are they related to “Utility” and “Justice”? Are you convinced by his characterization

*asked on June 20, 2015* -
## chemistry

How much heat energy, in kilojoules, is required to convert 37.0g of ice at −18.0 ∘C to water at 25.0 ∘C ?

*asked on May 9, 2015* -
## physics

Bill has a mass of 66.9 kg. Jane has a mass of 58.8 kg. If they are seated 2.2 m apart, how much gravitational force attracts them?

*asked on May 3, 2015* -
## chemistry

Three gases (8.00 g of methane, CH4, 18.0 g of ethane, C2H6, and an unknown amount of propane, C3H8) were added to the same 10.0-L container. At 23.0 ∘C, the total pressure in the container is 4.50atm . Calculate the partial pressure of each gas in the

*asked on May 1, 2015* -
## algebra NEED HELP

I've tried to do these problems multiple times and I'm just so confused. 1. (root x-5) + 5 = 0 2. (root 2-7x) = 2x Thanks!

*asked on April 29, 2015* -
## Math

Ana had some money. she used 4/7 to buy shoes which cost $96. if she spent another 2/7 to buy a dress how much would she spend altogether?

*asked on April 22, 2015* -
## physics

Choose one of the Laws of Thermodynamics (zeroth, first, second, or third) and give a brief summary of its development. Who is credited with "discovering" it and when? How did the four laws come to be ordered as they are? Please explain in detail

*asked on April 14, 2015*