# Brandon

Popular questions and responses by Brandon-
## science

What would happen if blood entering the heart mixed with blood leaving the heart?

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

A barge with mass 1.0×105 kg is proceeding down river at 5.8 m/s in heavy fog when it collides broadside with a barge heading directly across the river (see the figure). The second barge has mass 2.58×105 kg and was moving at 4.2 m/s. Immediately after

*asked on November 6, 2009* -
## Chemistry

Calculate [H3O+] in the following aqueous solution at 25 ∘C: [OH−]= 1.9×10−9M Calculate [H3O+] in the following aqueous solution at 25 ∘C: [OH−]= 2.1×10−2M Calculate [H3O+] in the following aqueous solution at 25 ∘C: [OH−]= 6.1×10−12M

*asked on April 29, 2014* -
## Chemistry

Enter the balanced complete ionic equation for HCl(aq)+K2CO3(aq)→H2O(l)+CO2(g)+KCl(aq) Would it be: 2H+(aq) + 2Cl^-(aq) + 2K^+(aq) + CO3^2-(aq) => H2O(l) + CO2(g) + 2KCl(aq)? Thanks

*asked on November 13, 2019* -
## Pyhsical Science

Which of the following statements is true about scientific theories? A. Scientific theories become scientific laws. B. Scientific theories are never proven. C. Scientific theories become hypotheses. D. Scientific theories summarize patterns found in

*asked on August 27, 2013* -
## Probability

A customer at Cavallaro’s Fruit Stand picks a sample of 3 oranges at random from a crate containing 60 oranges, of which 4 are rotten. What is the probability that the sample contains 1 or more rotten oranges?

*asked on July 23, 2016* -
## geometry

A slide 4.1 meters long makes an angle of 35 degrees with the ground. To the nearest tenth of a meter how far above the ground is the top of the slide. Could someone please explain don't want just answer would like to know how to do the work.

*asked on February 19, 2012* -
## Math (Statistics)

In exercise 12, the following data on x = average daily hotel room rate and y = amount spent on entertainment (The Wall Street Journal, August 18, 2011) lead to the estimated regression equation ŷ = 17.49 + 1.0334x. For these data SSE = 1541.4. City:

*asked on April 30, 2017* -
## Physics

Three identical charges of 2.0 uC are placed at the vertices of an equilateral triangle, 0.15m on a side. Find the net force acting on each angle.

*asked on February 22, 2012* -
## math

The height of Dougal is 1.84 metres. The height of Seb is 1.7 metres. Write the height of Dougal as a fraction of the height of Seb. Give your answer in its simplest form.

*asked on March 27, 2020* -
## trig

what is the reference angle for 17 pi/12?

*asked on August 23, 2011* -
## Physics

Need Help with physics! Two cars drive on a straight highway. At time t = 0, car 1 passes mile marker 0 traveling due east with a speed of 17.0 m/s. At the same time, car 2 is 1.3 km east of mile marker 0 traveling at 30.0 m/s due west. Car 1 is speeding

*asked on October 4, 2012* -
## geometry

A slide 4.1 meters long makes an angle of 35 degrees with the ground. To the nearest tenth of a meter bow far above the ground is the top of the slide? sin=35 x/4.1 x=4.1 sin=35 not sure how to do this

*asked on February 18, 2012* -
## physics

Superguy is flying at treetop level near Paris when he sees the Eiffel Tower elevator start to fall (the cable snapped). His x-ray vision tells him Lois LaTour is inside. If Superguy is 1.00 km away from the tower, and the elevator falls from a height of

*asked on June 10, 2010* -
## Math

John's high score on the Asteriud Game was 326,700. Mike's high score was 418,200. Rebecca just played the game and her high score was halfway between John's and Mike's. What was Rebecca's score?

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

Which type(s) of symmetry does the uppercase letter H have? my answer i believe is reflectional symmetry Which type of symmetry is shown by the lowercase letter w? my answer i believe is rotational symmetry. Could someone please check and explain.

*asked on March 5, 2012* -
## Math (Statistics: Test Statistic, Proportion)

The Pew Research Center Internet Project, conducted on the 25th anniversary of the Internet, involved a survey of 857 Internet users (Pew Research Center website, April 1, 2014). It provided a variety of statistics on Internet users. For instance, in 2014,

*asked on April 6, 2017* -
## Algebra

Slim Johnson was usually the best free-throw shooter on his basketball tam. Early in the season, however, he had made only 9 of 20 shots. By the end of the season, he had made all the additional shots he had taken, thereby ending with a season reacord of3

*asked on August 11, 2011* -
## geometry

In the graph below, point D is reflected across the y-axis. What are the coordinates of it's image? The graph looks like D is below the x-axis to the right 3 places from y-axis and down 1 place from x-axis. So would my answer be (3,1)?

*asked on March 5, 2012* -
## Math

Translate the sentence into an equality. The sum of a number times 5 and 27 is at most −26.

*asked on September 27, 2016* -
## Math

What number is 4 tens more than 26.?

*asked on January 9, 2013* -
## science

displacement vectors of 5km north, 3km east, 2km south, and 3km west combine to a total displacement of? 3km north 13km west 0km 2km south I think 13km west

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

Can someone explain how you get the answer b/15. Given the proportion a/b=8/15, what ratio completes the equivalent proportion a/8=?/?. I'm not sure if there is an equation or step you use to get the answer.

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

Molly deposits $200 in a savings account that has a 20% interest rate compounded annually. What will be her total after 3 years?

*asked on October 20, 2016* -
## Chemistry

Help please, What is the minimum mass of NH4HS that must be added to the 5.00-L flask when charged with the 0.350g of pure H2s(g), at 25 ∘C to achieve equilibrium? Ammonium bisulfide, NH4HS, forms ammonia, NH3, and hydrogen sulfide, H2S, through the

*asked on September 16, 2013* -
## english

help diagram sentence: Sandra and I are planning to go to the mall tomorrow, but today I am working on my paper.

*asked on June 28, 2010* -
## physics

A 5.00-kg object placed on a frictionless, horizontal table is connected to a cable that passes over a pulley and then is fastened to a hanging 9.00-kg object. Draw free-body diagrams of both objects. Find the acceleration of the two objects and the

*asked on March 25, 2010* -
## Chemistry

Explain why olive oil has a higher viscosity than water, by selecting an appropriate word from the provided list and filling in the following blanks. Oleic acid has a higher viscosity than water because it is a much________ molecule than water with

*asked on January 26, 2017* -
## Math: Thinking Mathematically

A flagpole has the height of 16 yards It will be supported by three cables, each of which is attached to the flagpole at a point 4 yards below the top of the pole and attached to the ground at point that is 9 yards from the base of the pole, Find the total

*asked on March 21, 2014* -
## Physical Science

Which of the following does NOT show the law of conservation of mass? A. 24 g of Mg burn in 32 g O2 to produce 56 g of MgO. B. 24 mL of Mg burn in 32 mL O2 to produce 56 mL of MgO. C. 2 atoms of Mg react with 1 molecule of O2 to produce 2 units of MgO. D.

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

A microscope shows you an image of an object that is 80 times the actual size. Therefore, the scale factor of the enlargement is 80. An insect has a body length of 7 millimeters. What is the body length of the insect under the microscope? I know it's 560,

*asked on March 6, 2012* -
## Physics

When an 81.0 kg adult uses a spiral staircase to climb to the second floor of his house, his gravitational potential energy increases by 2.25 103 J. By how much does the potential energy of a 17.0 kg child increase when the child climbs a normal staircase

*asked on November 2, 2008* -
## Physics

A 54 kg box is being pushed a distance of 7.0 m across the floor by a force P whose magnitude is 153 N. The force P is parallel to the displacement of the box. The coefficient of kinetic friction is 0.25. Determine the work done on the box by each of the

*asked on October 13, 2008* -
## Math

If a seed is planted, it has a 70% chance of growing into a healthy plant. If 7 seeds are planted, what is the probability that exactly 1 doesn't grow? Here What I did I thought its premutation but some reason I got that wrong, I multiple by (0.10) and

*asked on April 18, 2017* -
## Math (Statistics)

The Centers for Disease Control reported the percentage of people 18 years of age and older who smoke (CDC website, December 14, 2014). Suppose that a study designed to collect new data on smokers and nonsmokers uses a preliminary estimate of the

*asked on April 5, 2017* -
## Math

The point (5,-2) in on the terminal side of an angle t. Find cos

*asked on November 16, 2016* -
## Algebra II

the hypotenuse of a right triangle is 25 inches and the height is 5 inches more than its base. what is the height of the triangle?

*asked on November 5, 2016* -
## math

suppose you deposit $3000 in a savings account that pays interest in a a rate of 4%. if no money is added or withdrawn from the account, how much will be in the account after ten years.

*asked on November 9, 2015* -
## Algebra 2

From 1990 to 1994, the mail order sales of health products in the United States can be modeled by S = 10t^3 + 115t^2 + 25t + 2505 where S is the sales (in millions of dollars) and t is the number of years since 1990. In what year where about $3885 million

*asked on September 17, 2014* -
## english

Identify the simple predicate in the following sentence. Our basketball team will play against Wilson High School on Friday night.

*asked on July 30, 2012* -
## English

1)Read the passage below from "No Dogs Bark" and select the one that best represents imagery in the story. a)"Now and then he seemed to sleep." b)"The old man backed ou to a thick wall and shifted load but didn't let it down fron his shoulders." c)"The

*asked on January 9, 2012* -
## Algebra

What number must be added to the numerator and denominator of the fraction 7/19 to make the resulting fraction qual to 3/4?

*asked on August 11, 2011* -
## mathematics

After his first six biology tests, Ruben has a mean score of 78.What score does Ruben need on the next test to raise his average (mean) to 80?

*asked on August 11, 2019* -
## Algebra

The functions f(x) and g(x) are described below: f(x) = 32x + 8 g(x) = 32x − 9 The graph of g(x) is obtained by shifting down the graph of f(x) by _____ units. Numerical Answers Expected! Answer for Blank 1: „ð Question 11 (Multiple Choice Worth 5

*asked on November 24, 2015* -
## language arts

Identify the complete adjective clause. The car I drive has 50,000 miles on the odometer.

*asked on September 24, 2014* -
## Econ

If a pure monopolist can price discriminate by separating buyers into two or more groups: A.the marginal revenue curve and the total revenue curve will now coincide. B.the marginal revenue curve will now shift to a position above the demand curve. C.the

*asked on November 30, 2012* -
## Calculus

integral of cscx^(2/3)(cot^3)x i know that cot^2x is csc^2(x)-1, but i just don't understand how to solve the cscx^(2/3), any help? i also know that its trig integrals/substitution...

*asked on June 10, 2012* -
## geometry

the endpoints of AB are A(9,4) and B(5,-4) the endpoints of its image after a dilation are A1(6,3) and B1(3,-3) explain how to find the scale factor. Is there someone that can help me with this problem and explain foe me?

*asked on March 7, 2012* -
## geometry

A blueprint for a house has a scale factor of 1:35. A wall in the blueprint is 3inches. What is the length of the actual wall? Can someone explain how to figure scale factor?

*asked on March 6, 2012* -
## Physics

A boy starts at rest and slides down a frictionless slide as in the figure below. The bottom of the track is a height h above the ground. The boy then leaves the track horizontally, striking the ground a distance d as shown. Using energy methods, determine

*asked on October 17, 2011* -
## Algebra 2

Use the rational root theorem to determine which of the following could not be a root of 6x^3+23x^2-6x-8=0 I need all of the steps. Thanks

*asked on May 24, 2011* -
## Social Studies Essay Thesis

Well, I'm doing a report on William Cockerill and I need a thesis statement that answers this historical question: What was the importance of William Cockerill and how did he impact future generations?

*asked on January 23, 2009* -
## books

In what sense is Oedipus, through a king, also an "everyman" figure? How might the play of 'Oedipus Rex' be said to explore something fundamental about the limitations involved in being human?

*asked on October 4, 2008* -
## Physics

As a traffic light turns green, a waiting car starts with a constant acceleration of 6.0 m/second squared. At the instant the car begins to accelerate, a truck with the constant velocity of 21 m/ second squared passes in the next lane. HINT:Set the 2

*asked on September 17, 2008* -
## Probability

Maria handed in her final data management project last week. The class mean was 83% with a standard deviation of 8. If Maria’s mark produced a z-score of 1.09, what was her grade?

*asked on June 24, 2020* -
## algebra

A bush cricket jumps from the ground into the air with an initial vertical velocity of 4 feet per second. Write an equation that gives the cricket’s height (in feet) as a function of the time (in seconds) since it left the ground. After how many seconds

*asked on April 20, 2019* -
## social studies

1. Drag and drop the events to arrange them from the event that occured first to the event that occured last. 3.Colonial leaders sign the Declaration of Independence. 2.British soldiers and American colonists clash in Massachusetts. 1.The members of the

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

A new cruise ship line has just launched 3 new ships: the Pacific Paradise, the Caribbean Paradise, and the Mediterranean Paradise. The Caribbean Paradise has 19 more deluxe staterooms than the Pacific Paradise. The Mediterranean Paradise has 28

*asked on May 27, 2018* -
## College Chemistry

For the reaction that occurs in the voltaic cell Fe(s)|Fe2+(aq)||Cr3+(aq),Cr2+(aq)|Pt(s) use data from Appendix D in the textbook to answer the following questions: a)Determine the equation for the cell reaction b)Determine E0 cell c)Determine ΔG0

*asked on May 17, 2015* -
## Statistics

A research worker wishes to estimate the mean of a population by using sufficiently large sample. At the confidence level of 99%,the sample mean will be within 35% of the standard deviation. How large a sample should be taken?

*asked on June 11, 2014* -
## Physical Science

Which of the following statements about ice melting is true? A. Energy flows from the ice to its surroundings. B. Water molecules move from their fixed position. C. Water molecules lose energy. D. The temperature of the ice increases as it melts. I think

*asked on August 27, 2013* -
## Pyhsical Science

What is a system of knowledge and the methods used to find that knowledge? A. science B. technology C. measurement D. curiosity I think it's D.

*asked on August 27, 2013* -
## physics

A 2.7 kg ball strikes a wall with a velocity of 7.8 m/s to the left. The ball bounces off with a velocity of 6.6 m/s to the right. If the ball is in contact with the wall for 0.19 s, what is the constant force exerted on the ball by the wall?

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

I'm having trouble reversing the order of integration of ∫∫dxdy from a=0 to b=2(3)^(1/2) for x and c=y^(2/6) to d=(16-y^2)^(1/2) for y. I graphed the region of integration and that still doesn't really help me. i got approximately 7.9 for the

*asked on March 21, 2012* -
## history

Quick strikes and movements during the darkness were used by: a. Francis marrion b. Peter francisco c. Crispus Attucks d. Caeser Bacon I think its b, not sure

*asked on December 6, 2011* -
## history

The prussian soldier who helped train Continental soldiers was a. Marquis de Lafayette b. Baron Friedrich von Steuben c. George Rogers Clark d. Thaddeus Kosciuszko guess is B but not sure

*asked on December 6, 2011* -
## history

The attack on fort Ticonderoga gave the colonists valuable a. ammunition b. prisoners of war c. intelligence information d. british war maps I believe its c but not so sure

*asked on December 6, 2011* -
## Algebra 2

1. Simplify: sqrt6(sqrt2/2+sqrt3)-sqrt8 2. Simplify: sqrt(72x^3)-5x sqrt(2x) 3. Simplify: (2sqrt6-sqrt3)^2 4. Simplify: 6/3+2sqrt3 5. Solve: 2-y=sqrt(y+4) I need all of the steps. Thanks

*asked on May 24, 2011* -
## Math

A ship in calm seas steamed 13 km in one direction, turned and steamed 13 km in another direction, and then returned 12 km back to its original position. The captain then plotted the ship’s course on a nautical chart. She asked her first officer to look

*asked on March 22, 2011* -
## algebra 1

An item costs c dollars and 6% sales tax is charged The total cost including sales tax is given by the expression 1.06c you are buying a skateboard that cost $75 what is the cost of the skateboard

*asked on August 23, 2010* -
## 6th grade science (physics)

explain and describe Newton's 1st law and as it applies to forces, balanced forces and unbalanced forces

*asked on April 18, 2010* -
## 6th grade science (physics)

explain Newton's 1st law in relation to forces, balanced forces and unbalanced forces

*asked on April 18, 2010* -
## math

An arch is in the form of a semi-ellipse, with its major axis as the span. If the span is 80 feet and the height is 30 feet write the standard equation.

*asked on March 24, 2010* -
## Math

Use a counter example to show that cos(x+y)= cosx +cosy is not an identity

*asked on November 24, 2009* -
## fiance

You want to create a $75,000 portfolio comprised of two stocks plus a risk-free security. Stock A has an expected return of 13.6 percent and stock B has an expected return of 11.4 percent. You want to own $30,000 of stock B. The risk-free rate is 4 percent

*asked on October 26, 2009* -
## Algebra

Find all real values of x such that f(x) = 0 f(x) = 3 + 1 x – 2

*asked on October 16, 2009* -
## Physics

A research balloon of total mass 445 kg is descending vertically with a downward acceleration of 1.3 m/s2. How much ballast must be thrown from the car to give the balloon an upward acceleration equal to 1.5 m/s2, presuming that the upward lift of the

*asked on September 28, 2009* -
## Science - Chemistry

Balance the following chemical equation. Al + 02 -> Al2O3

*asked on November 2, 2008* -
## Probability

Current engineering graduates earn a mean starting salary of $62 000 in Canada, with a standard deviation of $2500. Assuming that the salaries are normally distributed, what is the probability that a graduate will find a job with a starting salary of more

*asked on June 24, 2020* -
## Math

Out if 56 coins, 18 are rare. If you select 10 of the coins, what us the probability that all of them are rare ? P(picking rare coin) = 18/56 = 0.3214 q= 1-p = 1-0.3214= 0.6786 , number of trials = 10 a) All rare coins: ncr= 10c10= n!/(r!*(n-r) =

*asked on May 16, 2020* -
## English

Read the paragraphs from “Let’s give up on the Constitution” by Louis Michael Seidman. The deep-seated fear that such disobedience would unravel our social fabric is mere superstition. As we have seen, the country has successfully survived numerous

*asked on June 14, 2019* -
## algebra

A recent survey of 300 television owners compared their television viewing habits before and after getting a DVR recording device. The circle graph to the right shows the data from the survey. Find the total number of people who say they watch less

*asked on May 28, 2018* -
## Chemistry

CaCl2 reacts with AgNO3 in aqueous solutions to produce a precipitate of AgCl that can be filtered and weighed. The balanced equation for the reaction is: CaCl2 (aq) + 2 AgNO3 (aq) → 2 AgCl (s) + Ca(NO3)2 (aq)

*asked on October 10, 2017* -
## Math

7. The value of a computer has a decay factor of 0.85 per year. After 2 years, the computer is worth $1445. What was the original value of the computer?

*asked on October 4, 2017* -
## Fluid Mechanics

A hot air balloon carries a load of 1000 N including its own weight. The balloon is 10 m in diameter. Estimate the average air temp of the air inside the balloon if the air outside is 20 is 20 deg C.

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

How much energy (in kilojoules) is released when 29.0 g of ethanol vapor at 88.0 ∘C is cooled to -10.0 ∘C? Express your answer to two significant figures. q = ______________ kJ Ethanol has mp = -114.5 ∘C, bp = 78.4 ∘C, ΔHvap = 38.56 kJ/mol and

*asked on January 26, 2017* -
## AP Physics 2

Identical point charges of +3.3 µC are fixed to three of the four corners of a square. What is the magnitude |q| of the negative point charge that must be fixed to the fourth corner, so that the charge at the diagonally opposite corner experiences a net

*asked on October 25, 2016* -
## Math Physics Torque Equilibrium

A uniform meterstick pivoted at its center has a 100 g mass suspended at the 21.0 cm position. At what position should a 95.0 g mass be suspended to put the system in equilibrium? What mass would have to be suspended at the 80.0 cm position for the system

*asked on October 22, 2016* -
## Math

A ball is thrown striaght up from a height of 3 ft with an initial velocity of 40 feet per second. How high will the ball go? Assume that the only force acting on the ball is gravity where the acceleration due to gravity is -32 feet per second per second.

*asked on March 24, 2016* -
## Finance

What is the amount of money created in the banking system due to an initial deposit of $1,000 if the required reserve is 5%? The banks are not holding any excess reserves.

*asked on January 14, 2016* -
## Finance

Calculate the annualized rate of return on a 200-day commercial paper. This loan does not pay periodic interest; it is a discount security. The face value of the paper is $1 million and the current market value is $980,000.

*asked on January 14, 2016* -
## math

He spent $48 on art supplies. The canvas for each of his paintings is an additional $2. He plans to sell his paintings for $10. Find the number of paintings (p) he will need to sell to break even.

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

An experiment consists of spinning a spinner. The odds in favor of the spinner landing on an even number are 3:7. What is the probability that the spinner will not land on an even number? Type your answer as a decimal.

*asked on September 24, 2015* -
## math

F= 9/5-62+32

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

The longest pass in NFL history is approximately 83.7 m. Ignoring the effects of air resistance, calculate what must have been the initial speed of the football.

*asked on September 23, 2014* -
## math

A rowing team rowed an average of 17.2 miles per hour with the current and 10.4 miles per hour against the current. Determine the team's rowing speed in still water and the speed of the current I need help fast. anyone?

*asked on July 27, 2014* -
## Math

An irrigation pump can pump 250 liters of water per minute. How many hours should the system work to water a rectangular ﬁeld 75 m by 135 m to a depth of 3 cm?

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

Tengo sed. ¿_____ un vaso de agua, por favor? A. Me trae B. Le traigo C. Me falta D. Quisiera I think it's A?

*asked on October 17, 2013* -
## Physics

A light ray traveling through air strikes a smooth, flat slab of crown glass at an angle of 30 degrees to normal. Index of refraction for crown glass is 1.66. What is the angle of refraction?

*asked on April 22, 2013* -
## Physics 1

A mass m1 = 4.9 kg rests on a frictionless table and connected by a massless string over a massless pulley to another mass m2 = 4.7 kg which hangs freely from the string. When released, the hanging mass falls a distance d = 0.8 m.

*asked on April 5, 2013*