# hanna

Most popular questions and responses by hanna-
## 7th grade

how do you know when something has energy?

*asked on April 15, 2009* -
## Math

What is the answer to page 31 of pre-algebra with pizzazz (what do hair dressers do?) ?

*asked on September 14, 2014* -
## MATH HELP

A Lights-A-Lot quality inspector examines a sample of 25 strings of lights and finds that 6 are defective. a. What is the experimental probability that a string of lights is defective? b. What is the best prediction of the number of defective strings of

*asked on February 18, 2016* -
## History

Which identifies Japan’s movement from a feudal society to an industrialized nation? Class warfare that was established by disgruntled Japanese peasants led to the need for political reform and the end of feudalism. The spread of Christianity throughout

*asked on December 23, 2018* -
## Statistics

I really need help with this problem. I am not sure what the question is asking and how to approach it! Thanks in advance! Its known that 2/3 of humans have a dominant right foot or eye. Is there also a right-sided dominance in kissing behaviour? In a

*asked on March 31, 2009* -
## Geometry

To the nearest degree, what angle does a hill with a grade of 11% make with a horizontal line?

*asked on February 27, 2012* -
## Lanuage. Please Help !!!

1.)what is the prepositional phrase in this sentence? Late last night their was aloud knock at the door a.)Late last night b.)there was c.)a loud knock d.)at the door 2.) what is the participle phrase in this sentence? Living in New York, he went to many

*asked on May 7, 2015* -
## Science

I need to make an acrostic poem for science. My teacher said that each letter needs to start a sentence about plant life. The word is photosynthesis. I need some ideas by the 13th of June. I already have p-h-o-t of photosynthesis. Pls help me!

*asked on June 10, 2011* -
## Chemistry/Redox Reactions

An electrochemical cell consists of a nickel metal electrode immersed in a solution with [Ni2+] = 1.0 M separated by a porous disk from an aluminium metal electrode immersed in a solution with [Al3+] = 1.0 M. Sodium hydroxide is added to the aluminium

*asked on August 18, 2008* -
## Physics

Billy stands on a hill without slipping. In which direction is the force of friction acting?

*asked on March 10, 2015* -
## chemistry

A given sample of a xenon fluoride compound contains molecules of the type XeFn where n is some whole number. Given that 9.03 × 1020 molecules of XeFn weighs 0.368 g, determine the value for n in the formula.

*asked on October 1, 2014* -
## chemistry

A sample of sodium reacts completely with 0.568 of chlorine, forming 936 of sodium chloride. What mass of sodium reacted?

*asked on September 24, 2012* -
## Quick math help

a set of data points has a correlation r= -0.86 your friend claims that because the correlation is close to -1 it is reasonable to use the line of best fit to make predictions is your friend correct explain your reasoning. I say she isn't correct because

*asked on September 27, 2015* -
## Chemistry

A gas can holds 1.5 of gasoline, what is this quantity in cubic centimeters? answer using two significant figures,

*asked on September 24, 2012* -
## Math

Bill and Joe leave their house at the same time heading in opposite directions. If Bill is driving three times faster than Joe and it takes them three hours to be 120 miles apart, how fast is Bill driving?

*asked on October 14, 2017* -
## Health

1. The functions of the respiratory system are (choose 2) A. to pump blood to the body** B. to deliver oxygen to the body** C. to remove carbon dioxide from the body D. to absorb nutrients 2. ______ is a substance in tobacco products that causes stained

*asked on February 19, 2016* -
## consumer math

You owe $1,350.00 on a credit card with a 14.25% APR. You pay $300.00 at the beginning of the month. How much interest do you save by paying at the beginning of the month versus at the end of the month? second part: Imagine you put the $300 in a savings

*asked on April 30, 2012* -
## Geometry

To the nearest degree, what is the measure of the smallest angle of a right triangle whose legs measure 9 and 15?

*asked on February 27, 2012* -
## geometry

Solve y= 5/8b+10 for b

*asked on September 6, 2011* -
## chemistry

Hi, I need help figuring out this question. An impure sample of barium hydroxide, Ba(OH)2 (aq), has a mass of 0.540 g. It is dissolved in water and then treated with excess sulfuric acid, H2SO4(aq). This results in the formation of a precipitate of barium

*asked on April 27, 2019* -
## Chemistry

At 125 degrees Celsius, the pressure of a sample of He gas is 345 mmHg. At what temperature degrees Celsius will the pressure become 690 mm Hg, if the volume remains constant?

*asked on July 28, 2013* -
## math

how many 4 number combinations can there be from 0-99 without repeating a number?

*asked on September 7, 2012* -
## ss

what RIGHTS AND RESPONSIBILITIES DO CITIZENS OF SC HAVE? describe AT LEAST TWO RESPONSIBILITIES

*asked on June 6, 2016* -
## chemistry

Calculate the H3O+ concentration at the halfway point when 34.5 mL of 0.19 M HBr is titrated with 0.1 M KOH. Assume additive volumes. Answer in units of M.

*asked on February 5, 2019* -
## geometry

quadrilateral ABCD has right angles at B and D. If ABCD is kite-shaped with AB=AD=20 and BC=CD=15, find the radius of the circle inscribed in ABCD.

*asked on December 4, 2011* -
## Science

How would renewable energy sources be used in a home?

*asked on March 3, 2014* -
## Chemistry

When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 25.2 of carbon were burned in the presence of 80.6 of oxygen, 13.4 of oxygen remained unreacted. What mass of carbon dioxide was produced?

*asked on September 24, 2012* -
## Math HELP!

A Lights-A-Lot quality inspector examines a sample of 25 strings of lights and finds that 6 are defective. a. What is the experimental probability that a string of lights is defective? b. What is the best prediction of the number of defective strings of

*asked on February 17, 2016* -
## calculus

The point on the curve for y = sqrt(2x+1) at which tangent is perpendicular to the line y = -3x + 6 is.... a. (4, 3) b. (0,1) c. (1, sqrt3) d. (4, -3) e. (2, sqrt 5) I'm not sure, but do you find the perpendicular slope (1/3) set that as dy/dx and solve

*asked on January 24, 2012* -
## Physics

Any help direction is appreciated. Inez is putting up decorations for her sister's quinceanera (fifteenth birthday party). She ties three light silk ribbons together to the top of a gateway and hangs from each ribbon a rubber balloon. To include the

*asked on January 24, 2015* -
## Business Communication

Which of the following would be classified as an informative or positive message? a) A request for information b) An announcement of a policy that reduces benefits c) A memo for the file recording actions and rationales d) A letter to an employer

*asked on February 24, 2011* -
## math

You select 10 cards randomly from a deck of 52 cards. What is the probability that all of the cards selected are face cards (i.e. jacks, queens, or kings)?

*asked on September 20, 2010* -
## Physics

A physics student uses a ramp to slide a 350 kg piano onto the back of a pickup truck. The box on the back of the truck is 81 cm above the ground and the planks are 3 m long. An average force of 1500 N is required to slide the piano up the planks. a)

*asked on April 11, 2019* -
## Math

Lian uses 200 tegular paces to walk around a square park.if one pace of lian measures 40 cm,what is the measure of each side of the park

*asked on November 23, 2017* -
## Algebra URGENT! Conic sections

A spacecraft is in a circular orbit 150 kilometers above Earth. Once it attains the velocity needed to escape the Earth's gravity, the spacecraft will follow a parabolic path with the center of Earth as focus. Suppose the spacecraft reaches escape velocity

*asked on March 18, 2014* -
## math

tickets for a school play cost $4 for adults and $2 for students at the end of the play the school sold a total of 105 tickets and collected $360 how much of each type of tickets did they sell

*asked on March 31, 2014* -
## math

If sinθ=7/13 and cosθ=12/13 find tan θ and cot θ Use Pythagorean Identities to find sin θ and tan θ if cos θ =-24/25 if the terminal side of θ lies in the third quadrant.

*asked on January 14, 2019* -
## statistics

Two percent of the circuit boards manufactured by a particular company are defective. If circuit boards are randomly selected for testing, the probability that the number of circuit boards inspected before a defective board is found is greater than 10 is

*asked on March 29, 2010* -
## Math

List the terms without changing the expression. 21x+21y

*asked on April 5, 2012* -
## Chemistry

Note- I do not want the answers. I just need to know how to set up each.. The combustion of isopropyl alcohol (Molar Mass=60.1 g/mole) is described by the following balanced equation: 1 C2H8O + 9 O2 (g) -> 6 CO2 (g) 8H2O (l) + 4012 kJ of heat energy a) How

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

diondre purchased a car for $22000. assuming the value of the car depreciates at a rate of 6% per year, approximately what will be the value of the car after 6 years

*asked on April 26, 2016* -
## statistics

Two percent of the circuit boards manufactured by a particular company are defective. If circuit boards are randomly selected for testing, the probability that the number of circuit boards inspected before a defective board is found is greater than 10 is

*asked on March 29, 2010* -
## Math

Jack has 99 hot dogs and 261 hot dog buns. He wants to put the same number of hot dogs and hot dog buns on each tray. What is the greatest number of trays Jack can use to accomplish this?

*asked on February 27, 2010* -
## Math

The House of Representatives has 435 members. If a committee has a prime number of members, and that number is a factor of 435, then how many members can be on the committee?

*asked on August 22, 2011* -
## science

Suppose you hang an object of weight W by a string from a hanging spring scale, such as the kind used in some grocery stores. You then hang the scale with the object from the ceiling of an elevator. When the elevator is standing still, the scale will read

*asked on April 8, 2013* -
## English help

"We can easily forgive a child who is afraid of the dark; the real tragedy of life is when men are afraid of the light" what does this quote mean?

*asked on October 4, 2015* -
## physics

A man seeking to set a world record wants to tow a 104,000-kg airplane along a runway by pulling horizontally on a cable attached to the airplane. The mass of the man is 93 kg, and the coefficient of static friction between his shoes and the runway is

*asked on November 17, 2013* -
## Math

The half-life of carbon-14, which is used in dating archaeological finds, is 5730 yr. Assume that 100% of the carbon-14 is present at time 0 yr, or x=0. Write the equation that expresses the percentage of carbon-14 remaining as a function of time.

*asked on October 11, 2011* -
## physics

Calculate the percentage of Earth’s gravitational force on the ISS astronauts while orbiting at an altitude of 248 miles above Earth’s surface.

*asked on January 28, 2014* -
## Physics

A particle is initially moving along the positive x-axis at a speed of 9.90 m/s. After 2.40 s, the particle is moving along the negative y-axis at a speed of 4.71 m/s. Find the x and y components of the particle's acceleration.

*asked on January 31, 2012* -
## Math

Solve z= 9/13c for c

*asked on August 15, 2011* -
## geometry

the figure below represents a building in the shape of a pentagon. using the scale 1 inch= 94 feet, what is the perimeter of the building?

*asked on August 15, 2011* -
## Physics

-Use upward as positive and 10.0 m/s2 for the magnitude of g. -Let us say that you toss an object upwards at 5.0 from a height of 17.0 m. 1.)What is in m/s2 the acceleration of the object the moment it reaches the highest position? 2.)What is in m/s2 the

*asked on September 3, 2014* -
## ap chemistry

A sample of gas in a cylinder of volume 4.2 L at 316 K and 2.68 atm expands to 7.21 L by two different pathways. Path A is an isothermal, reversible expansion. Calculate the work for Path A. Answer in units of J Path B has two steps. In the first step, the

*asked on October 8, 2012* -
## Calculus

What are the y-intercept and x-intercept of y= x-1/x^2-2x+5

*asked on October 1, 2019* -
## algebra

if f(x) = 5x + 4 find f(1)

*asked on November 14, 2017* -
## Social (ms.sue or writeteacher)

What are the: -similarities -differences -conflicts and reasons between men and women your answers are very much appreciated

*asked on November 4, 2013* -
## Chemistry

"There are two ions per formula unit in this compound. The -1 anion has 8 more electrons than the cation." I need to find the Chemical formula/name. Any suggestions on how to start? This can have more than one correct answer.

*asked on October 15, 2007* -
## Pre-calculus

1)Which term best describes the linear programming situation represented by x+y=2 why is the answer infeasible? 2)Describe the linear programming situation for this system of inequalities. x < 1 y > 0 3x + y < 5 why is the answer unbounded?

*asked on April 8, 2012* -
## physics

There is a 1500 mile race course. I MUST have a top speed of 36 meters/s (meaning I cannot go over 36). The max foward acceleration is 4 m/s squared and the max backward acceleration is 6 m/s squared. I start at 600m and must go to the 800m mark (I must

*asked on March 14, 2011* -
## physics

There is a 1500 mile race course. The max foward acceleration is 4 m/s squared and the max backward acceleration is 6 m/s squared. I start at 600m and must go to the 800m mark (I must travel 200m). What is an equation for the fastest time that I could get

*asked on March 14, 2011* -
## Business Communication

Indicate the alternative that both correctly evaluates the following sentence and correctly explains the reason for the evaluation. “As soon as you provide your date of birth on Line 2, your application for a flexible spending account will be

*asked on February 24, 2011* -
## statistics

In a batch of 97 computer diskettes, 8 are defective. A sample of six diskettes is to be selected from the batch.How many of the samples consist of all defective diskettes?

*asked on February 20, 2011* -
## math

The math team in addville travled to subtractville for a math compertition. The bus averaged 40 mph from addville to subtractville but adveraged 60 mph during the return trip. What was the adverage speed of the bus for the entire trip? Thats the story

*asked on September 28, 2008* -
## calculus

Use a sign chart to determine the intervals on which f(x)=4x^3-x^4 is concave up and concave up and concave down, and identify the locations of any inflection points.

*asked on January 22, 2017* -
## calculus

Determine the intervals on which f(x)= x+(4/x) is increasing and decreasing. Find the coordinates of any max or min points.

*asked on January 22, 2017* -
## secondhand lions essays

I have to write a typed (doubled spaced)1 page essay on each of the following ... Discuss the scenes where the boy speaks his own opinion what do these scenes tell you about the boy? How did the decisions made for the boy affect the boys life? How does

*asked on July 24, 2005* -
## Math help

Mt. Everest is more than 8000 m high. How fast would an object be moving if it could free fall to sea level after being released from an 4750-m elevation? (Ignore air resistance) How would I solve this?

*asked on September 30, 2015* -
## Pre calculus

A tugboat is traveling at 30 miles per hour at a compass heading of 38 degrees. The current is from the direction of 125 degrees moving at 7 mph. Find the resultant speed and the direction of the boat. I understand the concept and that I must use the law

*asked on February 16, 2015* -
## Maths

5. You have inherited an orange grove. The more orange trees there are in the grove, the fewer oranges each tree produces. When there are 30 trees, each tree produces 84 kg of oranges. When there are 90 trees, each tree produces 74 kg of oranges. Assume

*asked on May 15, 2014* -
## math

A triangular pyramid has a triangle base of 24 cm, triangle height of 16 cm, and a pyramid height of 14 cm. what is the volume of triangular prism.

*asked on February 12, 2012* -
## 8th grade

what vegetable has these letters? HARBRUB?

*asked on September 14, 2010* -
## 5th grade social studies

Who were some of the famous explorers of 1450-1763???

*asked on April 15, 2009* -
## 5th grade social studies

What was the french and indian war about?

*asked on April 15, 2009* -
## English

I'm writing a review and want to say that "xxx is what pushes the story forward" but with a more elegant and correct formulation. English is not my first language so I don't know all the expressions and such but I think that there is a proper expression

*asked on September 18, 2008* -
## math

alexander had some nickles in his bank. he added 3 dimes to the bank and then he had 85 cents.how many nickles did he have left? write an equation and work backward to solve.

*asked on November 6, 2007* -
## calculus

Use the derivative f'(x0= x^4-1 to find the local extrema and inflection points of f.

*asked on January 22, 2017* -
## Quick English check

Please correct me if I'm wrong! The VAST area of the artic seabed may have fossil fuel resources, but the costs to claim them are currently prohibitive. But that does not keep news organizations from INTIMATING that Russia is attempting a land grab. The

*asked on September 27, 2015* -
## English

Use myriad minutia nominal ponderous and vast in these sentences. Correct me if I'm wrong! 1. I am burdensome. (Ponderous?) 2. I am a great host. (Myriad?) 3. I am the least acceptable amount. (Nominal?) 4. I am the tiny details that are sometime easy to

*asked on September 27, 2015* -
## maths

find the perimeter of a rectangle whose sides are 3x+y and 7x+2y

*asked on January 10, 2015* -
## Chemistry

how do i know which compounds to put the roman numeral in?

*asked on November 20, 2013* -
## algebra

Coco's coffee charges different prices based on the number of pounds purchased. The pricing scale is modeled by the function below, where w is the weight in pounds purchased. Orders placed directly through the Web site are discounted by 1/3, but a shipping

*asked on July 13, 2012* -
## Algebra & Trig

at a throwing speed pf 12.2 meters per seconds,what is the angle that produce a distance of 13 meters

*asked on July 4, 2012* -
## s.s.

Why was the aztec civilization considered warlike?

*asked on May 19, 2012* -
## science

what is a change in position

*asked on June 1, 2010* -
## social studies/history

20 example/ways the govt. of north korea control the country and the people

*asked on January 18, 2010* -
## Economics

Is the airline business considered to be a monopoly or oligolply? it's an oligopoly, I think. If you think about it that's more likely. Good question by the way. Tom is right. Please check these sites for more information.

*asked on November 17, 2006* -
## math

June earns $13650 dollars in a year. She has to pay 12.5% tax on this amount. How much tax does she pay?

*asked on June 12, 2017* -
## calc

If f is the focal length of a convex lens and an object is placed at a distance p from the lens, then its image will be at a distance q from the lens, where f, p, and q are related by the lens equation 1f=1p+1q What is the rate of change of p with respect

*asked on March 3, 2017* -
## Maths

Harry is 33 years older than his son, Ben. in 4 years Harry will be twice as old as Ben. How old is Ben? What I have so far: NOW B=Ben's age B+33=Harry's age IN 4 YEARS B+4 B+33+4

*asked on March 1, 2017* -
## Math

What's -6 + 2/12? Could you please show your steps? Thank you! :)

*asked on November 3, 2015* -
## Quick English check

Please correct me if I'm wrong! Canada, Denmark, Russia, Norway, and the USA are the five countries with territorial claims to the artic seabed. The EXTENSIVE (as compared to the other claimants) Denmark has already submitted its claim to be reviewed for

*asked on September 27, 2015* -
## Homework

By forming tough,inactive cysts,Giardia... A.Survives in unfavorable conditions B.Gets energy from the sun C.Maintains a constant temperature D.Responds to stimuli,sun as chlorine

*asked on March 25, 2015* -
## ANATOMY

Essentials of Human Anatomy & Physiology (10th Edition) by Marieb, Elaine N power point notes (that summarize this particular textbook). Please help me I'll really appreciate that. I'm having a hard time looking for it.

*asked on November 29, 2014* -
## Science

GCSE Physics-Forces affecting falling objects. My falling object is a skydiver Can you please help me to find the information needed? Nothing too complicated please. Here is a list of things I need to include but I have no idea where this information can

*asked on May 4, 2014* -
## Math

An appliance is on sale at 30% discount. If the sale price is $42.00, what was the original price of the appliance?

*asked on December 15, 2013* -
## Algebra & Trig

calculate the velocity of 10 meters per second with an angle of 30 degrees

*asked on July 4, 2012* -
## Math

Find each quotient. A. 7/3 ÷3 1/2 B. 5/6 ÷ -18

*asked on March 4, 2010* -
## Math- Calculus

Find an equation of the line that is tangent to the graph of f and parallel to the given line Function: f(x) = x^3 Line 3x-y+1 = 0 ._.; I know the derivative of the function is 3x^2 and I do have the answer in the back of my book just need the way to get

*asked on August 26, 2007* -
## Math

If I had five pies and my friends are 3and I made20 more how many pies what I have left after you add two more

*asked on May 22, 2017*

## Pages

**1**- 2