Tuesday

October 13, 2015
Total # Posts: 560

**Maths**

How would you solve this in order to find t? 0.2t(t-5.1)(t-9.1)=2.4+0.75t I tried differentiating it, but I wasn't getting the answer I was supposed to
*October 9, 2015*

**maths**

Function for runner one: s=0.2t(t-5.1)(t-9.1) Function for runner two:s=2.4+0.75t 's' is for displacement and 't' is for time (where one minute is t = 1) At the start of a race, runner one begins with a displacement of 0m. However, at the start of the same race...
*October 6, 2015*

**stats **

Katie must take five exams in a math class. If her scores on the first four exams are 77, 79, 95, and 93, what score must Katie get on the fifth exam for her overall mean to be at least 80? The maximum score on an exam is 100 points. If it is not possible for Katie to achieve ...
*October 3, 2015*

**math**

write an algebraic expression for 10 + q
*September 21, 2015*

**Math**

What am I? I am a decimal fraction with three digits I am bigger than half of 6 I am smaller than double 2 All my digits are odd When you add my digits you get 15
*August 31, 2015*

**science**

Is tundra abiotic or biotic
*August 29, 2015*

**Chemistry**

How many liters of Carbon Dioxide are formed by burning 6011.0 grams of C3H7OH with excess of oxygen gas and is carried out at 20.00 degrees Celsius, and 1.150 atm of pressure. I know this needs PV=nRT but the burning and excess part is throwing me off. Please help me learn ...
*August 15, 2015*

**Math**

Sorry I wasn't finished with the problem. Fijisawa Inc. is considering a major expansion of its product line and has estimated the following cash flows associated with such an expansion. The initial outlay would be $1,980,000, and the project would generate incremental ...
*June 15, 2015*

**Math**

Fijisawa Inc. is considering a major expansion of its product line and has estimated the following cash flows associated with such an expansion. The initial outlay would be $1,980,000, and the project would generate incremental free cash flows of $490,000 per year for 6 years...
*June 15, 2015*

**Chemistry**

A sample of krypton gas occupies 95.0 mL at 0.500 atm. If the temperature remained constant, what volume would the krypton occupy at (a) 5.00 atm, (b) 0.0500 atm, (c) 555 torr, (d) 5.00 torr, and (e) 5.5 3 1022 torr?
*April 28, 2015*

**Education **

What is the most appropriate reason for having learning centers in the science classroom?
*March 17, 2015*

**Stats**

A pill weighs 100 mg, 8/9 of the pill is active ingrediant, how many milligrams are in the part of the pill that is not the active ingrediant?
*March 4, 2015*

**physics**

Why is blood pressure called excess pressure? Use the term true pressure. Thank you for your help!
*February 25, 2015*

**physics**

Why do we measure blood pressure in mercury?
*February 25, 2015*

**Math**

There are 10,000 lockers. One person opens all the lockers. The second person closes every 2 doors. The third person counts every three locker and does the opposite to the locker. (Open/close it.) The fourth person counts every fourth locker and does the opposite to it. The ...
*February 18, 2015*

**Algebra 2**

Find all of the zeros of each function 1. q(x)=2x^3-17x^2+90x-41 2.x^3-5x^2-7x+51 3.x^4-9x^3+24x^2-6x-40 Please show work!!! I want to learn how to do it.
*January 17, 2015*

**Algebra 2**

Solve the system algebraically 2x^2-5y^2=1 x^2+5y^2=68 Please show work!!!
*January 11, 2015*

**Algebra 2**

Find the equation for the parabola with the given vertex that passes through the given points. vertex (-4,2) point (-3,0) please show work!!!
*January 11, 2015*

**Social Studies**

When South Carolina's capital was move from Charles Town, what name was given to the new seat of state government? A)Charleston B)Columbia*** C)Florence D)Rock Hill
*December 19, 2014*

**Social Studies**

I have another question too
*December 19, 2014*

**Social Studies**

Thank you!!!!
*December 19, 2014*

**Social Studies**

Is it c?
*December 19, 2014*

**Social Studies**

yes but I do not understand what a weakened sense of regional identity means.
*December 19, 2014*

**Social Studies**

Sectionalism grew in the southern states due to A) an increase in federal regulations on southern industry. B) holidays established to celebrate national events. C) the South's economic dependency on slavery. D) a weakened sense of regional identity.*************
*December 19, 2014*

**Algebra 2**

solve 200(1+8%/12)^12 Please show work!!!!
*December 17, 2014*

**6th grade math**

what is the reason why we have an order of operations? Explain and provide an example.
*December 17, 2014*

**Algebra 2**

Use grouping to solve each of the following equations. 36x+2x^3-36-2x^2=0 Please show work I want to learn how to do it.
*December 11, 2014*

**Algebra 2**

Find the real zeros of each polynomial f(x)=5x^3-40 Please show work I want to learn how to did it
*December 11, 2014*

**Algebra 2**

Solve each polynomial equation. If a solution occurs more than once, state it's multiplicity. 4x^4-13^2+9=0 Please show work I need help
*December 11, 2014*

**Algebra 2**

x^2 + y^2 = 20 - x^2 - 6y = 28 ________________ y^2 + 6y = -8 y^2 + 6y + 8 = 0
*December 1, 2014*

**Algebra 2**

How did you get 8? I'm so confused...
*December 1, 2014*

**Algebra 2**

Solving Quadratic Systems x^2+y^2=20 x^2-6y=28 PLEASE SHOW WORK I'M HAVING TROUBLE SOLVING IT
*December 1, 2014*

**Algebra 2**

Solving Quadratic Systems x^2+y^2=2 x^2-6y=10 Please show work I'm having trouble solving it
*December 1, 2014*

**physics**

An unknown mass of a certain solid, initially at 60⁰C, is heated at a uniform at a uniform rate. After 4.0 min the solid reaches its melting point of 80⁰C, and it remains at that temperature for 3.0 min until completely melted. After a further 6.0 min of heating, ...
*November 30, 2014*

**Algebra 2**

And where did you get 32 from?
*November 29, 2014*

**Algebra 2**

Where did you get 29 from?
*November 29, 2014*

**Algebra 2**

Solving Quadratic Systems 2x^2+5y^2=53 4x+y^2=17 Please show work I'm having trouble solving it.
*November 29, 2014*

**Algebra 2**

The correct answer is (3,0) and (3.28,-1.76) It's correct or not
*November 29, 2014*

**Algebra 2**

Solving Quadratic Systems 16x^2-9y^2=144 y=9-x^2 Please show work I'm having trouble solving it.
*November 29, 2014*

**physics**

how much ice at -10degree celsius is needed to cool .1 kg of ethyl alcohol and .1kg of water from 20 degree celcius to 5 degree celsius?
*November 29, 2014*

**Math**

Rafael asked 85 students what kind of pet they liked the most. Exactly 35% of the students said they liked dogs best. What was the total number of students who said they liked dogs best? please show work
*November 25, 2014*

**Math**

ericka rides her bike at a rate of 6 minutes per mile. how many minutes will it take her to ride 16 miles?
*November 25, 2014*

**Math **

Louis paid $42 for a dozen magazines with her annual and subscription to her favorite sport magazine. What is the unit cost for each magazine?(How many magazines did she subscribe to) Please show work.
*November 25, 2014*

**Algebra 2**

thank you
*November 21, 2014*

**Algebra 2**

is the correct answer is x=-1 and y=-3
*November 21, 2014*

**Algebra 2**

Solving Quadratic System y=4x+1 2x-y+1 Please show work!!!
*November 21, 2014*

**Algebra 2**

I corrected your answer :D Thank you
*November 21, 2014*

**Algebra 2**

where did you get x+1=4 from
*November 21, 2014*

**Algebra 2**

Solving Quadratic Systems x+2y=4 3x-y=5 Please show work!!!
*November 21, 2014*

**Algebra 2**

More About Complex Numbers Multiply (4+3i)(1-i) Please show work i need help
*November 18, 2014*

**Algebra 2**

More About Complex Numbers Find the reciprocal. -1-i 2i
*November 18, 2014*

**Algebra 2**

More About Complex Numbers Find the conjugate of each number. 1.)squ root of 3-7/8i 2.) 2-mi 3.) 6 Please show work I need help
*November 18, 2014*

**Algebra 2**

More About Complex Numbers Multiply (4+3i)(1-i) Please show work i need help
*November 18, 2014*

**Algebra 2**

More About Complex Numbers: Solve x and y 4x+5y+13i=7+(6x+5y)i Please show work because I had a hard time finding the answer
*November 18, 2014*

**Chemistry**

A sample of oxygen at room temperature occupies a volume of 5.00x102 mL at 1.50 atm pressure. What pressure (in atm) must be applied to compress the gas to a volume of only 1.50x102 mL? Assume the temperature is constant.
*November 18, 2014*

**Law Studies**

What rights does the Bill of Rights Protect?
*November 13, 2014*

**Algebra 2**

Thank You Reiny
*November 13, 2014*

**Algebra 2**

I got that part but I just want to compare my answer. i got 16/3 and 8/3
*November 13, 2014*

**Algebra 2**

Complete the Square Solve each equation x^2+8x+16=16/9 Show work i want to learn!!!
*November 13, 2014*

**Algebra 2**

What are you talking about?
*November 9, 2014*

**Algebra 2**

that's for another problem show me how to do this one
*November 9, 2014*

**Algebra 2**

Thank you
*November 9, 2014*

**Algebra 2**

Solving By Factoring 2x(2x+1)=2 Please show work!!!
*November 9, 2014*

**Algebra 2**

Solving By Factoring (x-8)(x-5)=x Please show work!!!!
*November 8, 2014*

**Algebra 2**

solve each inequality or equation. Graph the solution. 5(absolute value 3w+2)-3>7 *Please show me the work
*October 15, 2014*

**Algebra 2**

Thank you so much
*October 11, 2014*

**Algebra 2**

solve each system of equation 3x+5y+2z=4 2x-2y+3z=-4 x+y+z=0 *could you show work because I want to learn how you got this answer
*October 11, 2014*

**Algebra 2**

Given a point (-2,5determine a point that satisfies the specified symmetry. 1. Origin (2,-5) 2. y-axis (2,5) 3. x-axis (-2,-5) 4. y=x ? Could you check if 1-3 is correct and could you help me on #4
*September 22, 2014*

**Science Please Help Me**

What did you get on the test
*June 3, 2014*

**physics**

What force exists between a positive charge of 2.6 x 10-6 C and a negative charge of 4.2 x 10-5 C if they are separated by 8 cm?
*May 27, 2014*

**Social Psychology**

What attributes are inherent in persuasive messages?
*May 12, 2014*

**Strategies for Academic Success**

Sean is taking an online course in Psychology, and is about to take a quiz over the lesson, “The Experimental Method”. He did poorly on his homework assignment and is struggling to remember the lesson content. What should Sean do before he takes the quiz over this ...
*May 2, 2014*

** Strategies for Academic Success**

What is "stage one" of a study session? Why is it so important?
*May 2, 2014*

**Strategies for Academic Success**

What is "stage one" of a study session? Why is it so important?
*May 2, 2014*

**Strategies for Academic Success**

thank you very much
*May 2, 2014*

**Strategies for Academic Success**

What skill is "critical" to success in online learning?
*May 2, 2014*

**math**

The sphere has surface area 2058 cm2. Its radius, to the nearest tenth, equals
*May 1, 2014*

**math**

A) About 12 times that of the earth B) About 150 times that of the earth C) About 600 times that of the earth D) About 1300 times that of the earth
*May 1, 2014*

**math**

The radius of the earth is approximately 3950 miles. The radius of Jupiter is approximately 44,400 miles. Since the radius of Jupiter is more than 11 times that of the earth, which comes closest to the volume of Jupiter ?
*May 1, 2014*

**Buying A Car**

the answer is D because A bumper to bumper warranty means that whatever goes wrong (unless caused by an accident or other abuse of the vehicle) the warranty will cover the repair. A power train warranty only covers the engine, transmission, and drive line. Some only cover ...
*May 1, 2014*

**Geometry**

im not in connections academy I can help you with lesson 5 unit 4 geometry quiz just sow me the problem
*May 1, 2014*

**science**

PLEASE HELP MRS SUE
*April 30, 2014*

**science **

2.Imagine two artificial satellites orbiting Earth at the same distance. One satellite has a greater mass than the other one. Which of the following would be true about their motion? (1 point) The satellite with the greater mass is being pulled toward Earth with ...
*April 30, 2014*

**Geometry**

Show that each conditional is dales by finding a counterexample. If an animal is a bird, then it is a penguin.
*April 29, 2014*

**Algebra**

Ramona divided his 35,000 inheritance between two investments, one paying 9% and the other 12% simple interest. is total annual income on the interest alone was 3,000. How much did he invest at 9%?
*April 21, 2014*

**Geometry**

a hemispherical bowl with radius 25cm contains water whose depth is 10cm. what is the water's surface area
*March 31, 2014*

**Geometry**

thank very much Steve
*March 26, 2014*

**Geometry**

I need help in this question!!! CD has an endpoint at (2,-1) and a midpoint at (8,3). which measure is closest to the length of CD? A. 20.4 units B. 8.4 units C. 14.4 units D. 11.7 units
*March 26, 2014*

**Geometry**

thanks Steve
*March 21, 2014*

**Geometry**

do I use the distance formula
*March 21, 2014*

**Geometry**

CD has an endpoint at (2,-1)and a midpoint at (8,3). which measure is closest to the length of CD?
*March 21, 2014*

**introductory to physics**

A pendulum bob is released from some initial height such that the speed of the bob at the bottom of the swing is 4.0 m/s. The acceleration of gravity is 9.81 m/s 2 . What is the initial height of the bob? Answer in units of m
*March 4, 2014*

**Accounting**

Suppose you want to have $5,000 saved at the end of five years. The bank will pay 2% interest on your money. How much would you have to deposit today to have the $5,000 you want at the end of five years?
*February 4, 2014*

**EARTH SCIENCE**

I just took the pennfoster exam and it was my first question! The answer was not D!
*January 7, 2014*

**Math**

Mariko has an 80 inches = 1 inch scale- drawing of the floor of her house. On the floor plan, the dimension of her rectangular living room are 1 7/8 inches by 2 1/2 inches. What is the area of her real living room in square feet?
*December 27, 2013*

**Math**

A scale drawing of a rectangular field is 10 cm by 8.5 cm. if the actual field has dimensions of 40 meters by 34 meters, which could be the scale used for the drawing?
*December 27, 2013*

**Chemistry**

calculate the minimum concentration of ag+ ion that must be added to (or built up in) a 0.140 m Na2CrO4 solution in order to initiate a precipitation of silver chromate. The ksp of ag2cro4 is 1.2 × 10^-12.
*November 20, 2013*

**Physics**

1/q + 1/p = 1/f f=r/2 p=15.1 f= 8.55/2= 4.275 1/q= 1/f+1/p= 1/4.275 + 1/15.1 = 19.375/64.5525 take inverse to get q q= 3.33
*November 11, 2013*

**Physics**

An object 6.70 cm high is placed 15.1 cm in front of a convex mirror with radius of curvature of 8.55 cm. Where is the image formed?
*November 11, 2013*

**math**

3/4(-2x+3)+7x/2=11/4
*September 24, 2013*