Friday

May 27, 2016
Total # Posts: 1,563

**Math (trigonometry)**

Hi, I need help with these problems, I'm not sure where to start. The book's examples are different. Thanks in advance!! 1.) To find the distance AB across a river, a distance BC of 472m is laid off on one side of the river. It is found that B=108.1 degrees and C= 17.9...
*November 23, 2014*

**Maths**

I did miss a bit. The 10 additional balls were all red.
*November 22, 2014*

**Maths**

In a bag there are a number of red and blue balls. The ratio of red to blue balls is 3:7. I add 10 balls and the ratio goes to 6:7 red to blue balls. How many blue balls are there? 3n + 7n = 10n (3n+10) + 7n = 10n + 10 6n + 7n = 10n + 10 13n = 10n + 10 3n = 10 N = 3.333 7n = ...
*November 22, 2014*

**Chemistry**

typo: *not be correct
*November 16, 2014*

**Chemistry**

Thank you DrBob222, could you possibly elaborate why C or D could be correct? (I initially thought C, but I'm not so sure now.)
*November 16, 2014*

**Chemistry**

Which of the following is NOT true for ΔGrxn? A.) If ΔG°rxn > 0, the reaction is spontaneous in the forward direction. B.) If Q = 1, then ΔGrxn = ΔG°rxn.If ΔG°rxn = 0, the reaction is spontaneous in the reverse direction. C.) If ΔG&...
*November 16, 2014*

**math**

sales tax is 8.2 percent find the sales taxes on a purchase of 273.00.
*November 14, 2014*

**MATH!!!**

Aparent dies and leaves half of his estate to his four children. THE FIRST ONE GETS 1/2 OF THE ESTte the second gets 1/8 and the thrid one gets 1/4 . how much did the fourth on get?
*November 14, 2014*

**MATH!!!**

A function machince accepts inputs as ordered pairs. The componeys of the ordered pairs are natural numbers and the first componet is the length of the rectangle and the second componet is the width. the given machince comptes the perimeter ( the distance around the rectangle...
*November 14, 2014*

**MATH**

A function machine accepts inputs as ordered pairs. the componets of the ordered pairs are natural numbers and the first component is the length of rectangle and the second comonet is the width . the given machince comptes the perimiter . find the out ut for (3,7) (7,3) (5,7) ...
*November 14, 2014*

**math**

A function machine accepts inputs as ordered pairs. The Components of the order pairs are natural numbers and the first components is the length of the rectangle and the second componet is the width . The given machine computs the perimeter. Find the out put for (1,3) ...
*November 13, 2014*

**math**

F (X)= X-5
*November 13, 2014*

**Math**

Write an expression for the cost c if a printer charges $2.05 for binding plus 5 cents fee p pages for copies of a community group. C=
*November 13, 2014*

**algebra**

If matt has six times as many sitckers as tom. how many stickers dose he have to give tom so they can have 70 stickers each?
*November 13, 2014*

**Math**

Determine the next term of sequence 3,11,19,27,35 is my line of thinking correct 43?
*November 10, 2014*

**language / reading**

I'm doing a précis and I want to get a good grade could someone check this. C.s. Lewis's The Last Battle takes place in a forest it is a children's fantasy novel. The conflict is that a false ask an roams Narnia. The main characters at e Jill and Eustace the...
*October 27, 2014*

**language / reading**

I can't figure out what the climax of The Last Battle is? Is it this,the climax of The Last Battle is when Jill and Eustace go to the real Narnia.
*October 27, 2014*

**math**

I tried it and I think the answer is 82% am I right
*October 21, 2014*

**math**

Can't figure this one out. The oceans' tide levels vary based on the phases of the moon. Find the percent decrease in tide levels when high tide is 4.25 ft and low tide is 0.75 ft above sea level.
*October 21, 2014*

**math**

It is a different equation I have it now.
*October 21, 2014*

**math**

I don't get how to put it in the the equation Interest=percent×rate×time This is the question The banded ribbon worm is a carnivorous aquatic worm. It measures about 2.5 ft. When expanded. Find the percent increase between the contracted and expanded length of ...
*October 21, 2014*

**Language arts**

the Answer is B
*October 17, 2014*

**History**

Will do! It seems more accurate that way.Thanks again
*October 9, 2014*

**History**

Okay thank you for your help, I really appreciate it!
*October 9, 2014*

**History**

The question does not tell me anything else, but I do know that there are 6 features in a civilization. -GOVERNMENT -RELIGION -ARCHITECTURE -WRITING -SOCIAL STRUCTURE/CLASSES -CITITES
*October 9, 2014*

**History**

I'm not exactly sure, but I think it has something to do with civilizations of Ancient Egypt.
*October 9, 2014*

**History**

Explain the six features of Ancient Egypt
*October 9, 2014*

**1st grade**

Thank you
*October 9, 2014*

**1st grade **

This is for my cousin Kara planted seeds in her garden.that summer, many tomatoes grew. cause: Effect:
*October 9, 2014*

**Empirical Inquiry**

.25
*October 9, 2014*

**math**

Explain Sean biked 43 miles on Monday, 23 miles on Tuesday, and 62 miles on Wednesday. How many more miles did he bike on Wednesday than on Monday? Draw a picture and write an equation to solve. Then solve
*October 9, 2014*

**science**

The total energy of motion in the molecules is called POTENTIAL ENERGY. TEMPERATURE is the average amount of energy of motion in the molecules of a substance. A THERMOMETER is a thin glass tube with a bulb on one end that contains a liquid,usually mercury or colored alcohol. ...
*October 8, 2014*

**Science**

I'm pretty sure it is c
*October 8, 2014*

**Science**

The mRNA brings the message that was transcribed by the DNA to the ribosome, while the tRNA brings the anticodon to translate the message, along with the amino acid which bonds to form a polypeptide chain. The chain is further developed into a functional protein .
*October 8, 2014*

**Science**

the biochemical basis of heredity consisting of codons in DNA and RNA that determine the specific amino acid sequence in proteins and appear to be uniform for nearly all known forms of life. I'm not sure what the answer is but this is more information.
*October 8, 2014*

**Science**

The genetic code is the set of rules by which information encoded in genetic material (DNA or RNA sequences) is translated into proteins (amino acid sequences) by living cells. Hope this helps.
*October 8, 2014*

**science**

I only want to know if I got them right or witch ones I got wrong.
*October 8, 2014*

**science**

Potential energy Temperature Thermometer Heat Conduction And convection
*October 8, 2014*

**science**

Ms sue HELP ME PLEASE
*October 8, 2014*

**science**

Help me.sue
*October 8, 2014*

**science **

The total energy of motion in the molecules of a substance is called? ?is the average amount of energy of motion in the molecules of a substance. A ? Is a thin glass tube with a bulb on one end that contains a liquid usually mercury or a colored alcohol. The energy transferred...
*October 8, 2014*

**Science **

How do you define a controlled experiment?
*October 7, 2014*

**Math**

0.28 t 0.62 = 0.90
*October 7, 2014*

**Math **

What is the sum of decimals? 0.28 + 0.62 = Write to explain how you found your answer.
*October 7, 2014*

**Mathematics C 8th grade**

55
*October 3, 2014*

**math**

13(s+12)
*October 1, 2014*

**Math Multiplication **

What are the factor pairs of 642? Please dont ask what I dont understand because I cant find the answer
*October 1, 2014*

**math**

How do you study for a math quiz?
*September 24, 2014*

**math**

You would need 4 pizzas
*September 24, 2014*

**language**

I will now definitely read it. :) thank u
*September 24, 2014*

**language**

Would you mind if you gave me a brief summary?
*September 24, 2014*

**language **

I have to do a précis on a book that was published in the 1940-1969 what book would you recommend.
*September 24, 2014*

**social studies**

Thanks I found it right way.
*September 24, 2014*

**social studies**

What did the Egyptians believe about the region to the west of the Nile.
*September 24, 2014*

**social studies**

Thank you it was very helpful
*September 24, 2014*

**social studies**

I don't have any choices. My answer would be the Egyptians looked at the water flow.
*September 24, 2014*

**social studies **

In order to track time of the floods,Egyptians looked to?
*September 24, 2014*

**social studies **

True or false The ancient Egyptians were monotheistic;they believed in only one god.
*September 24, 2014*

**Language Arts**

The answer is B.
*September 24, 2014*

**WORLD HISTORY HELP**

Three differences between the Paleolithic and Neolithic Age? Explain at least three technological advancements made by mesopotamians? How was structure created in the Paleolithic Age, the Neolithic Age and Mesopotamia?
*September 18, 2014*

**World History **

Three differences between the Paleolithic and Neolithic Age? Explain at least three technological advancements made by mesopotamians? How was structure created in the Paleolithic Age, the Neolithic Age and Mesopotamia?
*September 17, 2014*

**Social Studies**

thats mean
*September 11, 2014*

**math**

Pamela Mello is paid on an incremental commission schedule.She is paid 2.6% on the first $60,000 and 3.4% on any sales over $60,000. If her weekly sales volume was $89,400, what was her total commission?
*September 2, 2014*

**? ABOUT POSTING AN ENGLISH/COMP. HOMEWORK QUESTION**

If we posted an essay we had written and asked a teacher to read and evaluate it, would we be able to delete the post after a teacher had read it so as to aviod someone using the essay for plagiarism, or is a question posted on this site permanently?
*September 1, 2014*

**AP US History**

I dot really understand the article so I dont know what his point of view is? Is it that he is listing a bunch of rules on how to protect the gold and who should own it??
*August 28, 2014*

**AP Calc. AB**

No. Sorry it's actually f(x)=(x^3)/8 when x=4
*August 27, 2014*

**AP Calc. AB **

Evaluate the approximate tangent slope to f(x)=x^3/8 when x=4
*August 27, 2014*

**Alg.2**

Thankyou Mr.Steve!
*August 24, 2014*

**Alg.2**

The membership to your local video store is flat rate of $10/year and the DVD rental rate is $3.95/DVD. Write an equation that models the total amount of money you will spend on DVD rentals this year. How many DVD's can you rent if you spend $500/yr.?
*August 24, 2014*

**Algebra 2**

the cost c of going to the movies varies directly with the number of people N attending. A group of four paid $14 to go to the movies on Friday. Write an equation that relates c & n. How much would it cost for seven people to go to the movies.
*August 24, 2014*

**math**

32gal x 60min x 4qt = 7,680qt 1min x 1hour x 1gal = 1hour
*August 21, 2014*

**PHYSICS**

what work must a diesel engine in an 18,000kg truck do to increase its speed from 30.m/s to 40 m/s in 5.0s? what average force did the engine exert? what power was needed (in horsepower)
*August 6, 2014*

**PHYSICS**

thank you
*August 6, 2014*

**PHYSICS**

a marksman fires a bullet(mB=5.00g) horizontally with a velocity of 300.m/s from a rifle(mR=3.00kg)What is the recoil velocity of the rifle?
*August 6, 2014*

**PHYSICS**

a constant force of 6.00N acts on a 3.00kg object for 10.0s. what are the changes in the objects momentum and velocity?
*August 6, 2014*

**PHYSICS**

when a mass of 2.5kg string is attached to a spring it stretches 42cm. a) find the constant of the spring 'k' b) how much force is required to stretch the spring 50cm? c) how much energy is stored in the spring when stretched 0.35cm?
*August 6, 2014*

**PreCalculus **

How do you find the probability of three events happening at the same time? Please walk me through the steps. If you are in ship and get hit by lightning the probability is 1/100000. And the probability of falling down into the ocean and getting eaten by a shark is 100/100000...
*July 30, 2014*

**PHYSICS**

a wheel rotating at 1800 rpm slows down uniformly to 1200 rpm in 2.0 sec. calculate a)the angular acceleration (revs/s^2) of the motor. and b) the number of revolutions it makes in this time.
*July 30, 2014*

**PHYSICS**

a flywheel makes300.rpm. find the angular speed of any point on the wheel and the linear speed(tangential) of a point 5.00m from the center.
*July 30, 2014*

**PreCalculus **

Solve for x. sec(x)sin(x)=2sin(x) 0<=x<=2pi
*July 29, 2014*

**geometry **

A rectangle is 14cm wide and 48 cm long. Find the measures of the acute angle between its diagonals. please help
*July 29, 2014*

**Algebra**

Since it is asking for time, is C correct?
*July 24, 2014*

**Algebra**

A problem involving a ball being thrown in the air is modeled with a quadratic function. Which of the following would you be solving for if asked to find the time at which the ball will reach its maximum height? A. an x-intercept of the graph B. the y-intercept of the graph C...
*July 24, 2014*

**Algebra**

A. h=-16t^2+20t+300 B. h=-16t^2+20t+30 C. h=-16t^+20t+3 D. h=-16t^+200t+3
*July 24, 2014*

**Algebra**

Suppose you hit a fly ball with an initial upward velocity of 20 feet per second. Which of the following equations would be a realistic model for the height of the ball after t seconds?
*July 24, 2014*

**Algebra**

The height of a ball thrown directly up with a velocity of 40 feet per second from a initial height of of 5 feet is given by the equation h(t)=-16t^2+40t+5, where t is the time in seconds and h is the ball’s height, measured in feet. When will the ball hit the ground? ...
*July 23, 2014*

**Algebra**

Which of the following cannot be solved using the quadratic formula? A. x^2-x+3=0 B. x^2=9 C. 2x+3=0 D. -x^2=-x
*July 22, 2014*

**Algebra**

Which of the following cannot be solved using the quadratic formula? A.-3x^2-x+3=-3x^2 B. 0=x^2 C. 0=2x^2-1 D. x^2+3x-2=4x^2-5x-1 Is it C?
*July 22, 2014*

**Algebra**

But isn't it also true that you can't complete the square if there is no constant?
*July 21, 2014*

**Algebra**

Which of the following statements is true? A. Any quadratic equation can be solved by completing the square. B. Completing the square always gives two distinct solutions. C. You can’t complete the square if there is no constant in the equation. D. You can only use ...
*July 21, 2014*

**PHYSICS**

two masses m1=400.g and m2 =600.g are connected with a light string which goes over a frictionless pulley of negligible mass. the two systems are released from rest. a) what is the acceleration of each mass? b) what is the tension force in the string? and c) what is the ...
*July 21, 2014*

**Algebra**

The length of a rectangle is 4 units more than its width. The area of the rectangle is 25 more than 4 times the width. What is the width of the rectangle?
*July 20, 2014*

**Algebra**

The length of a side of a rectangle is 2 units less than a number, and the width is 4 units more than the length. Which of the following expressions represents the area of the rectangle, in square units? A. x^2+2x+4 B. x^2-2x+8 C. x^2-4 D. x^2+4
*July 16, 2014*

**RE: ALGEBRA**

Given 25x^2 - 10x = 0, which values of x will satisfy the equation? (Hint: Factor the polynomial into two terms, and find the values of x that will make each term 0.) A. x = 0 and x = 5/2 B. x = 0 and x = 2/5 C. x = 0 and x = 2 D. x = 0 and x = 5
*July 12, 2014*

**Algebra**

Given 25^2-10x=0, which values of x will satisfy the equation? (Hint: Factor the polynomial into two terms, and find the values of x that will make each term 0.)
*July 12, 2014*

**BABYSITTING **

Which foods hinder the absorption of less absorbable forms of irons in foods, such as whole grains, dried peas or beans? A. Orange juice or other forms of Vitamin C B. Milk products or eggs C. Tea D. All of the above E. B and C PLZ HELP ME I THINK IT IS E.
*July 12, 2014*

**PHYSICS**

a ball is dropped from rest at 25m above the ground. how fast is it moving at 10 m above the ground and b) how much time does it take to reach the ground? no air resistance.
*July 12, 2014*

**PHYSICS**

V= pie r^2h r=4.38m V= 368m^3 h=?
*July 11, 2014*