# bre

Popular questions and responses by bre-
## math

Sue is two years older than Chris. Jim is 4 years older than Sue. Their ages total 68. How old is Sue?

*asked on July 7, 2014* -
## Chemistry

The Ksp of manganese(II) hydroxide, Mn(OH)2, is 2.00 × 10-13. Calculate the solubility of this compound in g/L.

*asked on June 24, 2017* -
## Algebra 2

A ball is dropped from a height of 25 feet and allowed to continue to bounce until it eventually comes to a rest. Each time the ball bounces it rebounds to 45 of its previous height. After which bounce is the ball's rebound height 10.24 ft?

*asked on September 26, 2016* -
## math 2

Every day Drake runs two laps at a park in his neighborhood. His speed, s, is inversely proportional to time, t, over the same distance. If Drake runs at a speed of 6 miles/hour, it takes him half an hour to complete two laps of the park. Which statement

*asked on March 23, 2018* -
## stats

Find the explained variation for the paired data. The equation of the regression line for the paired data below is y-hat = 3x. Find the explained variation. x= 2 4 5 6 y= 7 11 13 20

*asked on May 22, 2015* -
## Chemistry

Assuming there are 20 drops in 1.0 ml, how many drops are there in 2.00 gal. Remember there are 1000 ml in a liter and .946 in a qt

*asked on January 25, 2018* -
## Trigonometry

Sketch the graph of the function (Include two full periods. Find one complete cycle. Show your work. y=-3+5cos πt/12

*asked on September 29, 2017* -
## history

a.Which statement about lynchings in the South in the 1890s is true? 1. Lynchings decreased compared to the Reconstruction era. 2. Leaders of lynch mobs tended to come from the wealthy ruling class. 3. Lynchings and acts of violence against blacks

*asked on January 27, 2011* -
## math

write each expression using n as your variable.then simplify fully. 1.five more than the sum of a number and ten. 2.the product of eight and seven less than a number. 3.the quotient of a number and three, increased by one. 4.ten less than the product of

*asked on August 26, 2015* -
## language arts

Complete the analogies by selecting the pair of words whose relationship most resembles the relationship of the pair in capitol letters. SAGE:WISDOM a. author:anthology b. speaker:tirade c. acrobat:agility (I'm thinking c but I'm not sure) SCOLDING:TIRADE

*asked on November 15, 2011* -
## calculus

A particle is moving along the curve y= 3sqrt3x+1. As the particle passes through the point (5,12), its x-coordinate increases at a rate of 3 units per second. Find the rate of change of the distance from the particle to the origin at this instant.

*asked on October 29, 2009* -
## Math

I have 17 hundreds,2 tens,9 ones,6 tenths and 7 thousands. What number am I?

*asked on March 30, 2017* -
## World Geography

REVIEW 1.Which of Canada’s regions has limited vegetation and freezing temperatures most of the year? A. Maritime B. Subarctic C. Tundra

*asked on April 5, 2013* -
## World Geography

REVIEW 1.Which of the following has made American culture more accessible to the rest of the world? A. Scientific Research B. Imports C. The Internet D. Immigration

*asked on April 5, 2013* -
## World Geography

REVIEW 1.What type of information does a physical map show? A. Natural features

*asked on April 5, 2013* -
## World Geography

REVIEW 1.How do lines of latitude and longitude help geographers study Earth? A. These lines show geographers the direction of Earth’s rotation around the sun. B. These lines help geographers see the difference between oceans and landforms on Earth’s

*asked on April 5, 2013* -
## history

a. Which statement about the Ku Klux Klan during Reconstruction is NOT true? 1. Southern governments never created policies that resulted in the arrest of members. 2. They attempted to stop blacks from using their right to vote. 3. Blacks and whites who

*asked on January 27, 2011* -
## physics

the solid has a mass of 180g. what is the density of the solid?

*asked on November 5, 2009* -
## Math

Tyron is constructing a box in the shape of a rectangular prism to store his baseball cards. It has a length of 20 centimeters, a width if 7 centimeters, and a height of 8 centimeters. What is the volume of the box?

*asked on April 16, 2018* -
## Math

If n represents a number then write the expression for the difference of three times the number after it was increased by three and twice that number

*asked on August 22, 2017* -
## Chem

How many liters of H2 gas can be produced at 0 ∘C and 1.00 atm (STP) from 10.0 g of Zn? Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g)

*asked on July 14, 2017* -
## math

The radius of the sphere is 10 units. What is the approximate volume of the sphere? Use π = 3.14 and round to the nearest whole cubic units

*asked on December 23, 2016* -
## chemistry

PLEASEEEE HELP Write the balanced equation for the reaction between zinc and acetic acid. The equation has been written you just have to balance. ___Zn + ___HC2H3O2 → ___Zn(CH3COO)2 + ___H2

*asked on December 15, 2016* -
## College Algebra

A yo-yo factory has fixed operating costs of $450,000 per year. In addition to the fixed costs, the cost to produce one yo-yo is $1.10. The yo-yo company sells the yo-yos to a distributor for $5.50 each. How many yo-yos must be sold in a year to earn a

*asked on February 3, 2016* -
## math

Francine and Cheryl received equal scores on a test made up of multiple choice questions and an essay. Francine got 34 multiple choice questions correct and received 14 points for her essay. Cheryl got 30 multiple choice questions correct and received 22

*asked on December 7, 2015* -
## Calculus

You are driving at 20 m/s when you notice a tree blocking the road, 30 meters ahead of you. It takes you half a second to react before slamming on the brakes. Your car decelerates at a constant 10 m/s2. How far does your car travel before stopping? Will

*asked on November 17, 2014* -
## geomtry

1/5 (a+10)=-3

*asked on October 25, 2014* -
## algebra

Identify the solution of the system of equations, if any. -4x-2y+=4 8y+16x-16

*asked on June 20, 2014* -
## Principles of Public Speaking: Lesson 8

nonverbal communication includes:

*asked on May 12, 2014* -
## physics

The blades of a ceiling fan have a radius of 0.340m and are rotating about a fixed axis with an intial angular velocity of +1.25rad/s2. When the switch on the fan is turned to a higher speed, the blades acire an angular acceleration of +2.55rad/s2. After

*asked on January 21, 2014* -
## math

Find the measure of the largest acute angle in a 5-12-13 triangle.

*asked on October 1, 2013* -
## Chemistry

Heat energy is added to a 325 g block of nickel, and the temperature increases from 23 degrees celsius to 51 degrees celsius. If the same amount of heat was added to the same mass of water at the same temperature, what would the water's final temperature

*asked on September 12, 2013* -
## World Geography

REVIEW 1.Which of the following is an abundant natural resource found in Canada? A. Gold B. Timber C. Soybeans

*asked on April 5, 2013* -
## World Geography

REVIEW 1.The forests of the Pacific Northwest are just one of the many different ______________ in the United States where many people work in the same industry. A. elevation regions B. political regions C. climate regions

*asked on April 5, 2013* -
## World Geography

REVIEW 1.What natural resource most attracted European traders to Canada? A. Timber

*asked on April 5, 2013* -
## World Geography

REVIEW 1.Which of the following was one cause of the Civil War in the United States? A. The South wanted new states to allow slavery and the North did not. B. The North wanted new states to allow slavery and the South did not. C. The North opposed signing

*asked on April 5, 2013* -
## World Geography

REVIEW 1.Canada currently ranks first in the world in which category? A. Total number of Internet users B. Percentage of college and university graduates

*asked on April 5, 2013* -
## World Geography

REVIEW 1.Demographers are scientists who study A. weather and climate. B. pollution.

*asked on April 5, 2013* -
## World Geography

REVIEW 1.An area in which a single culture or cultural trait is dominant is called a ____________. A. culture B. cultural landscape

*asked on April 5, 2013* -
## World Geography

REVIWE 1.Using up resources is one of the negative effects of A. the birth rate. B. the death rate.

*asked on April 5, 2013* -
## World Geography

REVIEW Which ecosystem usually supports thick forests of deciduous trees? A. Tropical forest B. Temperate forest C. Savanna

*asked on April 5, 2013* -
## Math

Triangle Lmn is similar to triangle xyz. Triangle LMN has a side of 5 and 3. The scale factor of triangle Lmn to triangle xyz is 2:5. What is triangle xyz's length? Helppppp Meeeeeeeeeee!!!

*asked on April 2, 2013* -
## bio check my answer plz???

Ideally, sustainable development should ___________. A)put the protection of the environment ahead of human needs B)provide for human needs at the expense of the environment C)use more natural resources to make goods to meet human needs D)preserve

*asked on December 26, 2012* -
## math

20. Miguel is driving his motorboat across a river. The speed of the boat in still water is 11 mi/h. The river flows directly south at 2 mi/h. If Miguel heads directly west, what are the boat’s resultant speed and direction?

*asked on December 26, 2012* -
## Chemistry

How would you separate a mixture of potassium chloride from copper metal?

*asked on July 23, 2012* -
## History

What rhetorical devices were used in Seom on the mount

*asked on April 3, 2012* -
## math

Solve by the substitution method. What is the solution of the system? 3x+9y=48 -6x+y=56

*asked on January 20, 2012* -
## language arts

Complete the analogies by selecting the pair of words whose relationship most resembles the relationship of the pair in capitol letters. AFFABILITY:SMILE a. pain:grimace b. resilience:recovery c. turbulence:pseudonym d. abrasion:bruise (I think it is "a"

*asked on November 15, 2011* -
## soc. stud.

how could you use the Sons of Liberty today to have your voice heard?

*asked on November 14, 2011* -
## geometry

if bc = 2x-3 and ac = 2x+10, find the length of ab

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

i need to unscramble these math words icarlafto untoegrnc enitmelgen

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

If a metal wire carries a current of 130 mA, how long does it take for 3.50×10 20 electrons to pass a given cross-sectional area anywhere along the wire? The magnitude of the charge on an electron is 1.6 × 10 −19 C. Answer in units of s.

*asked on February 22, 2011* -
## A/P

The number of electrons in the outer shell of K+. I think it has 0 electrons in the outer shell since it lose some. Am I correct?

*asked on February 12, 2011* -
## cemistry

what information is provided by the atomic mass?

*asked on December 8, 2010* -
## english

What is mixed word order?

*asked on September 13, 2010* -
## Harmonics Problem--please help!

A violin string has a length of 0.350 m and is tuned to concert G, with f = 392 Hz. Where must the violinist place her finger to play concert A, with f = 430 Hz? If this position is to remain correct to half the width of a finger (that is, to within 0.600

*asked on April 23, 2010* -
## Harmonics Problem--please help!

A violin string has a length of 0.350 m and is tuned to concert G, with f = 392 Hz. Where must the violinist place her finger to play concert A, with f = 430 Hz? If this position is to remain correct to half the width of a finger (that is, to within 0.600

*asked on April 23, 2010* -
## Undamped, forced oscillation

Undamped, forced oscillation?!?!? I have this question and can't seem to get the right answer. Damping is negligible for a 0.130 kg object hanging from a light 6.30 N/m spring. A sinusoidal force with an amplitude of 1.70 N drives the system. At what

*asked on April 8, 2010* -
## Biochemistry

How is it that cortisol stimulates glycogen synthesis and gluconeogenesis? Isn't that contradictory?

*asked on March 18, 2010* -
## spanish

En la 11. ___________ te llamé. De la oscuridad me llamaste. Reconocí tu 12. ___________. Reconociste la mia. “Vente para acá,” 13. ___________. Tape 4, Side B ExaminationRespondiste: “¿Dónde estás, papá? No te 14. ___________ .” “ 15.

*asked on October 29, 2009* -
## algebra

In Utah, a license plate consists of 3 digits followed by 3 letters. The letters I, O, and Q are not used, and each digit or letter may be used more than once. How many different license plates are possible?

*asked on March 12, 2009* -
## algebra

the bill(parts and labor) for the repair of a car was $458. the cost of parts was $339. the cost of labor was $34 per hour. write and solve an equation to find the nuber of hours of labor. make sure you show your work.

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

A solution is made by mixing exactly 500 mL of 0.156 M NaOH with exactly 500 mL of 0.100 M CH3COOH. Calculate the equilibrium concentration of the species below. Ka of CH3COOH is 1.8 × 10−5 [H+] × 10 M Enter your answer in scientific notation. [OH−]

*asked on December 5, 2019* -
## math

is it likely or unlikely 0.25

*asked on April 25, 2019* -
## Science until 7 I Need help

An organisms genotype is It physical appearance It combination of alleles The mutation it inherits The crossing over that occurs during meiosis.

*asked on April 5, 2018* -
## Trigonometry

Sketch the graph of the function (Include two full periods. Find one complete cycle. Show your work. y=sin4x

*asked on September 29, 2017* -
## Trigonometry

Sketch the graph of the function (Include two full periods. Find one complete cycle. y=10cos πx/6

*asked on September 29, 2017* -
## math

if there are 24 students and 5 less girls than boys , how many girls are in the class. I don't think there is a solution to this.

*asked on January 23, 2017* -
## Math

A lawn care company charges a homeowner $1625 a year to maintain the lawn that is 65' x 50' what is the maintenance fee per square foot

*asked on January 4, 2017* -
## math

David is a car salesman. He earns a salary of $750 a month, plus a commission of $300 per car that he sells. David needs to earn a minimum of $3,500 per month. Write an inequality for the number of sales he needs to make to earn his minimum. Let c

*asked on December 14, 2016* -
## History

how has the tension between traditional lifestyles and western influences impacted African cultures?

*asked on June 15, 2016* -
## Chemistry

Can someone please help me determine the mass of 1.45 mol FePO4?

*asked on January 4, 2015* -
## Chemistry

Calculate the number of atoms in 2.58 mol antimony. Its an example problem, I need help!

*asked on January 4, 2015* -
## Math

What is 225-256dto the 2nd power =?

*asked on August 20, 2014* -
## SP180.1.2 Principles of Public Speaking: Lesson 8

SP180.1.2 Principles of Public Speaking: Lesson 8

*asked on May 12, 2014* -
## Statistics - Please help

An experiment was conducted to determine the abrasion resistance of a new type of automobile paint. Twelve different strips of metal were painted with the new paint. The abrasion resistance of each piece was then tested on a machine. In the sample, the

*asked on April 3, 2014* -
## physics

if u have swam one lap in a swimming pool, that means from one end to the other and back. In 3.5 h, a swimmer makes exactly 60 laps in the pool, that is 40 m long. Determine the distance the swimmer traveled, the total displacement of the swimmer, the

*asked on January 14, 2014* -
## math

what is 2x+y=-7 in slope intercept form?

*asked on October 21, 2013* -
## Math

You bake brownies in a 9-by15-inch pan. If you cut the brownies into servings 3 inch by 3 inch., how many squares will I have?

*asked on May 9, 2013* -
## math

2 csc x - 3 = - 5

*asked on April 18, 2013* -
## World Geography

REVIEW 1.In what ways did immigrants contribute to American society in the early 1900s? A. They increased the defensive power of the United States. B. They worked in factories, built railroads, and opened businesses. C. The took political power in most

*asked on April 5, 2013* -
## World Geography

REVIEW 1.Where is the majority of Canada’s oil found? A. Along the Atlantic Coast B. Along the border with the United States C. In western Canada

*asked on April 5, 2013* -
## World Geography

REVIEW 1.Where is Canada’s population density highest? A. In the cities of Northern Canada B. In cities in central Canada

*asked on April 5, 2013* -
## World Geography

REVIEW 1.Which of the following statements about the natural resources of the United States is most accurate? A. The many agricultural resources of the United States have made up for its lack of other resources.

*asked on April 5, 2013* -
## World Geography

REVIEW 1.____________ spread cultural traits because they bring cultural traditions with them to their new homeland. A. Traders B. Explorers

*asked on April 5, 2013* -
## math

The point (5, -7) is dilated by a scale factor of 4 about the origin. Find the location of the new point. Show your work.

*asked on March 27, 2013* -
## geometry

The scale factor is 5/4. Find the area of the pre-image if the area of the image is 150 in2.Show your work.

*asked on March 27, 2013* -
## healh

Posture, ________, is maintained as a result of muscle contraction. A. Such as singing and painting B. Such as sitting and standing C. Such as jumping and skipping D. All of the above

*asked on February 7, 2013* -
## bio

Relate how the arrangement of electrons determines an element’s reactivity

*asked on May 21, 2012* -
## Bio

Relate how bonding leads to the formation of molecules and compounds.

*asked on May 21, 2012* -
## geometry

Find the measure of each interior angle using the given information quadrilateral RSTU with m

*asked on January 17, 2012* -
## geometry

When is the perpendicular bisector of a side of a regular n-gon also an angle bisector?

*asked on December 8, 2011* -
## soc. stud.

how could you use effigies today to have your voice heard?

*asked on November 14, 2011* -
## math

i am an odd three digit number if you round me to the ten o become 500 the sum of my digits 8 what numger am i

*asked on September 26, 2011* -
## math

i need to unscrmble th word enitmelgens its som math term HHHHEEEELLLLPPP!!!!!!!!!!!!!!!!! please:)

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

In this problem you will determine the average velocity of a moving object from the graph of its position as a function of time . A traveling object might move at different speeds and in different directions during an interval of time, but if we ask at

*asked on January 30, 2011* -
## Physics--diffraction

Suppose you have measured the diffraction pattern of a grating with d = 0.09 mm and have found that the spots were separated by s = 1 cm. Now you want to determine d for an unknown grating. With the unknown grating, the spots are separated by s = 3.1 cm.

*asked on November 3, 2010* -
## genetics/genome sequencing

I pasted the sequences of human and chimps into Transeq and this is what I got: >exo18_MYH16_human_1 EQLNKLMTTLHSRTPFCPLYYPQ*V*AIG >exo18_MYH16_ximpanze_1 EQLNKLMTTLHSTAPHFVRCIIPNEFKQSX I know that the * signifies gaps. I need help with this question, as I

*asked on April 27, 2010* -
## math

how can you use the product of 108 and 4 to find the product of 324 and 4?

*asked on February 2, 2010* -
## Physics

I can't seem to figure out this problem...what equation would I use? Thanks! An incompressible, nonviscous fluid is initially at rest in the vertical portion of the pipe, where L = 2.17 m. When the valve is opened, the fluid flows into the horizontal

*asked on January 11, 2010*

## Pages

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