Wednesday

October 22, 2014

October 22, 2014

Total # Posts: 577

**pre algebra**

there is 100 bacteria in a petri dish. every 30 minutes the bacteria doubles. how muchbacteria will there be in 3 hours.
*October 19, 2014*

**Computer Science**

Write a program to compute an employee’s weekly pay and produce a pay slip showing name, gross pay (i.e. pay before deductions), deductions, and net pay (i.e., pay after deductions).
*October 18, 2014*

**Math**

A boat sails 40km from point A to point B, east of A on a lake. Lodge P is south of point A. Another lodge Q is south of point B. The bearing of Q from point A is S52degresE and the bearing of P from B is S39degresW. If P is 60km from Q, calculate the bearing of lodge Q from ...
*July 12, 2014*

**Math**

Add a term to b^2 - 4/5b to make the expression a perfect square. Write the results as the square of a bracketed expression.
*July 7, 2014*

**Math**

The first three terms of an arithmetic progression are t, 2t-1, 2t+4. Calculate the value of t.
*July 2, 2014*

**Math**

In a triangle ABC, PQ is the midpoint of AB and AC. PQ = 2cm, BC =3cm. The area of trapezium PQCB = 10cm^2. If the area of triangle APQ = xcm^2. Calculate the value of x.
*July 1, 2014*

**Math**

An arc of a circle subtends an angle of 54 at the centre. If the arc is 9cm long, calculate the circumference of the circle.
*June 30, 2014*

**Math**

Simplify: sin60/tan30
*June 16, 2014*

**Math**

Find the equation of a line which passes through point P(10, 12) and // to y=x/2 + 4
*June 16, 2014*

**Math**

An open-ended regular hexagonal prism whose length is 15cm and whose cross-section has a perimeter of 24cm. Find the surface area.
*June 15, 2014*

**Math**

What are the formulas for 3-D figures?
*June 15, 2014*

**Math**

576^m-4 = 8^m*3^m find m.
*June 12, 2014*

**Math**

Alright!! Thanks!!
*May 30, 2014*

**Math**

In a family six members eat meat; five members eat fish while two eat both. Calculate the number of members in the family. How do we solve these ones? Hints please...
*May 30, 2014*

**Science**

On the arthropods part there is: A-butterfly, B-spider, C-centipede, D-mosquito.
*May 29, 2014*

**Science**

Dichotomous key. What does this mean? Plants with seeds Go to B Plants without seeds Go to B or Arthropods with wings Go to 2 Arthropods without Go to 3 AND WHAT'S THE MEANING OF GO TO 1 or B?
*May 29, 2014*

**Math**

Thanks this will help. I only knew of: AB + BC = AC(triangle rule) and AB + BC + CD = AC + CD = AD(parallelgram rule)
*May 28, 2014*

**Math**

These are vectors as well: (a) AB + __ = CA = 0 (b) AB +BC + CD + DA = __ the first was a mistake i wanted these ones. Complete these and please if you can, explain.
*May 28, 2014*

**Math**

Owkay thanks
*May 28, 2014*

**Math**

These are vectors: QA + __ =QB Complete the vector equation...
*May 28, 2014*

**Chemistry**

Stoichiometry; Find the percent yield of solid calcium carbonate made when 5.0 mL of 1.0 M Sodium Carbonate reacts with 0.40g Calcium Chloride Balanced Equation; Na2(CO3)+CaCl2-->2NaCl+CaCo3 could you please help me step by step to find the theoretical yield as well as the ...
*May 21, 2014*

**Math **

There are three times as many people in the psychology class as in the art history class. there are 16 more people in the algebra class then the art history class The total enrollment of the three classes is 86. How many students are enrolled in each class?. I need a little ...
*May 8, 2014*

**Algebra**

Oops I meant to say 86.
*May 7, 2014*

**Algebra**

There are three times as many people in the psychology class as in the art history class. there are 16 more people in the algebra class then the art history class The total enrollment of the three classes is 86. How many students are enrolled in each class?. So I know my ...
*May 7, 2014*

**Algebra**

The length of a rectangular Garden is 40 yards longer then double the width The perimeter of the garden is 470 yards. find length and width of the Garden. L=2W+40 2W+2(2W+40=80 Kinda stuck here.
*May 7, 2014*

**Algebra**

I am a little stuck from here.
*May 7, 2014*

**Algebra**

The length of a rectangular Garden is 40 yards longer then double the width The perimeter of the garden is 470 yards. find length and width of the Garden. L=2W+40 2W+2(2W+40=80 Am I starting off right?
*May 7, 2014*

**Algebra**

Oh I got the formula backwards just had to flip it around. So yeah I got L= 7 for the length of the piece of steel and W=5 for the width of the piece of steel. I checked it and I got the same answer.
*May 7, 2014*

**Algebra**

The length of a rectangular piece of steel in a bridge is 3 meters less then double the width. The perimeter of the piece of steel is 24 meters Find the length and width of the piece of steel. l=3-2w? is part of the formula?
*May 7, 2014*

**Algebra**

My answer for melinda she earns $124 after you subtract 276 from 152 because 124 +152=276
*May 7, 2014*

**Algebra**

So Barbara earns $276 and thats the answer? I also need to find out how much melinda earns. So I assume I then subtract 276 from 400?
*May 7, 2014*

**Algebra**

Melinda earns $152 less per week then Barbra. The combined income of these two people is $400 per week. How much per week does each person earn. I need some help on this problem If im correct I multiply 2 times $152 then divide by 400?
*May 7, 2014*

**Algebra**

For their homecoming parade the students of U-Math have created a colorful banner, 53 meters in length, that is made of two pieces of parachute material. The short piece is 19 meters shorter then the long piece. Find the Length of each piece. Length of the long piece = Length ...
*May 7, 2014*

**Algebra**

Write the other number or expression in terms of the given variable. A 3 foot board is cut into two pieces. If one piece measures x write the expression for the length of the other piece. Ok now I know the first term is 2x correct? where do I go from here?
*May 7, 2014*

**Algebra**

thank you!
*May 7, 2014*

**Algebra**

eight times the difference of a number and three is equal to six times the sum of a number and one 8(x+3)=6(x+1) is this right?
*May 7, 2014*

**Algebra**

four added to one seventh of a number answer: 4+1/7x is this correct? or is it 1/7+4x?
*May 7, 2014*

**Math**

Mr Shen wished to enter the orange kite competition with an innovative kite of his own design. He did tests that showed an irregular quadrilateral design was best. The longest side (A) was twice the length of the shortest side (C). Side B was one and one-half times the ...
*May 5, 2014*

**Math**

L A=28 Length B=21 I got those answers can you help me on the other 2?
*May 2, 2014*

**Math**

I got the answers for A and B but how do I do that for C and D?
*May 2, 2014*

**Math**

Mr Shen wished to enter the orange kite competition with an innovative kite of his own desgin. He did tests that showed an irregular quadrilateral design was best. The longest side (A) was twice the length of the shortest side (C). Side B was one and one-half times the ...
*May 2, 2014*

**Math**

7 Meters
*May 2, 2014*

**Math**

The Kulas have decided to enclose their rectangular garden. The length of the garden is 8 meters, and 30 meters of fencing is needed to enclose the garden. What is the width of the garden?
*May 2, 2014*

**Math**

x=36
*May 2, 2014*

**Math**

The sum of one-third a number, one-sixth of the number, and one-ninth of the number is twenty two. Can someone help?
*May 2, 2014*

**Math**

Find x so the pitch is 1/3. There is also a number below the x in the figure which is 24 feet. So how do I solve?
*April 30, 2014*

**Math**

The steepest section of a track has a rise of 2240 meters for a horizontal distance of 6100 meters. what is the grade section of this track?
*April 30, 2014*

**Math**

Find X so that the pitch of the roof is 1/6. The number below the x is 30 feet in the figure. so how do I solve this?
*April 22, 2014*

**Math**

find the intercept and graph. -x+3y=-6 I need to complete the ordered pair (3,) so im I setting the problem up right -x(3)+3y=-6? and thus the missing ordered pair is -2?
*April 22, 2014*

**Math**

Graph the equation. Be sure to simplify equation before graphing it. -18+2y=-7y I got the answer y=2 because I subtracted 2 from both sides got -9 then divided by -18 and got 2. y=2. So now can someone help me with graphing the points?
*April 22, 2014*

**Algebra**

Graph the linear equation y=4/5x+5 I know how to plot the points. I just need help figuring out what numbers to plot.
*April 22, 2014*

**Algebra**

(y^3-y^2-4y-7)/(y+1) can someone show me how to do this?
*April 16, 2014*

**Algebra**

The area of a parallelogram is 115 square miles the base is= x+9 and the height is x-9. so the equation I got down which is 115=(x+9)*(x-9. Now I have to find the base and height in miles. Can someone help?
*April 14, 2014*

**Algebra**

To those who know how to use a ti84 plus calculator. Can anyone show me the steps on how to perform rational expressions and equations?
*April 14, 2014*

**social studies **

Which of the following statements about mayan and modern cultures is true
*April 8, 2014*

**Algebra**

I am having issues with factoring. I am trying to check my work using a TI84 Plus calculator but I don't know how to plug in a problem to check its factoring. Can anyone help? for example 44y^3+55y^2-11xy how can I go about plugging that in to check my work?
*March 27, 2014*

**Algebra**

Hi I have a question concerning how to factor on a TI84plus what are the steps to doing that? much help is appreciated thanks!
*March 26, 2014*

**Math**

In a cyclic quadrilateral ABCD twice angle BAD =three times angle DCB. Calculate angle BAD
*March 7, 2014*

**Math**

Steve, can you explain a bit furthur, please???
*March 6, 2014*

**Math**

Steve, i'm still trying to use you way...
*March 6, 2014*

**Math**

What if she was rolling, anthony?
*March 6, 2014*

**math probability**

0.23
*March 4, 2014*

**math**

the cost of the nelson family dinner was $54.95 at the restaurant.they want to leave a 20% tip for the server. which equation will solve for the total amount of the dinner
*February 18, 2014*

**physics**

a bead on a wire 30m high is released and reaches point A, where is loops twice towards the right. what is the velocity and acceleration at point A-D? point A is at 20m directly below from starting point. Point B is 10m at the bottom of the first loop. point C is in between ...
*February 8, 2014*

**physics**

A girl coasts down a hill on a sled, reaching level ground at the bottom with a speed of 7.0 m/s. The coeﬃcient of kinetic friction between the sled’s runners and the hard, icy snow is 0.054, and the girl and sled together weigh 749 N. The acceleration of gravity ...
*January 26, 2014*

**Physics**

A tuning fork creates sound wave with frequency of 170 hertz. If the speed of sound is 340 m/s, what is the wave length of the sound wave?
*January 19, 2014*

**Physics**

A tuning fork creates sound wave with frequency of 170 hertz. If the speed of sound is 340 m/s, what is the wave length of the sound wave?
*January 19, 2014*

**English**

What attitudes toward Catholicism, the religion Donne abandoned, are apparent in his poetry?
*November 7, 2013*

**English**

In Edward Spenser'r The Faerie Queene, how should we interpret the crowded and slightly comical scene at the beginning of Book 1?
*October 31, 2013*

**English **

"The Passionate Shepherd to His Love who is the audience of the poem?
*October 24, 2013*

**Algebra**

h^9-h^8+h-1 Factor by grouping Can someone help with this?
*October 15, 2013*

**Pyschology **

Can someone give me an example of source memory and explain the example?
*October 14, 2013*

**Algebra**

(y^3-y^2-5y-5)/(y+1) can someone help me solve this?
*October 10, 2013*

**pyschology**

thanks!
*October 7, 2013*

**pyschology**

I am writing a paper for Pyschology about how I have a tendency after washing my hands I have this pattern to take the paper towel or hand cloth and use it to open the door. Which psychological theory would this fall under? 1.Classical Conditioning 2. Operant Conditioning 3....
*October 7, 2013*

**word problem **

You deposit $1000 at 2% for 20 years, compounded annually. What's the future value? use this interest 0.02/365
*September 17, 2013*

**math**

Thank you Ms. Sue
*September 8, 2013*

**math**

If 1,000 UD dollars is equivalent to 0.8610 European euros, convert $11,000 to euros. $11,000 is equivalent to?
*September 8, 2013*

**Math**

a^2+ab over 4b for a=-3 and b=-2
*September 2, 2013*

**Math**

48z^2-16z z=1/4
*September 2, 2013*

**Math**

Evaluate x to the second power minus 3x x=-2
*September 2, 2013*

**English**

What does architecture represent in the poem beowulf?
*August 29, 2013*

**English**

Why use a Epithet or kennings in Beowulf?
*August 29, 2013*

**Algebra**

1.4-7(2)^3/(-8) 2.6(4-3)^2-3(2) need help evaluating
*August 26, 2013*

**Algebra**

1.-5/39+23/39 2.-7/12+1/6 can someone help me with these?
*August 26, 2013*

**Algebra**

-1/4-3 simplify as integer or fraction Can someone show me how?
*August 24, 2013*

**Algebra**

simplify as integer or fraction. 3/4-3/5 can someone help me with is?
*August 23, 2013*

**economics**

The reasons that cause monopoly occurrence
*July 14, 2013*

**Math - 8th Grade**

Please help: The distance from home plate to second base on a softball diamond is 84.853 feet. This is the same as the distance from first base to third base. What is the area of a softball diamond? Round your answer to the nearest square foot. 1,800 ft.2 3,558 ft.2 7,200 ft.2...
*May 29, 2013*

**Math - please help**

The Great Pyramid of Giza is 280 feet tall and about 440 feet wide at the base. The distance from the apex to the center of one side of the base is 356.1 ft. What is the area of one side of the pyramid? 61,600 ft.2 99,708 ft.2 156,684 ft.2 78,342 ft.2 Please explain the answer...
*May 24, 2013*

**Chemistry**

Consider a generic redox reaction then suppose that the coefficients in the redox reaction are doubled. How will the following quantities be affected for a voltaic cell under nonstandard conditions, will they be Doubled, Halved, Squared, or No Change. Note that n is written as...
*May 8, 2013*

**Philosophy**

Martin Luther King, “Letter from Birmingham Jail,” draws from the thought of Thomas Aquinas in saying “an unjust law is a human law that is not rooted in eternal and natural law. Any law that uplifts human personality is just. Any law that degrades human ...
*April 30, 2013*

**Biology **

1. Bone is formed from the deposition of __________ into connective tissue A. Calcium and Phosphate B.Sodium and potassium C. potassium and calcium D. Sodium and Phosphate E Actin and myosin 2. The major disadvantage of exoskeletons is A. Animal outgrows it B. it is not ...
*April 30, 2013*

**Biology **

Which of these systems is involved in connecting one body system with another? A. Integumentary B.Muscular C. Immune D. Digestive E. Endocrine I think its E
*April 30, 2013*

**biology**

1. The function of the circulatory system is to: A. Deliver oxygen and nutrients to every cell B. facilitate communication between different tissues c. Remove Wastes from tissues d. all of these e.none of these I believe the answer is D all of them
*April 30, 2013*

**government**

What is best answer below with regard to the quantity of end items procured with a given procurement appropriation, the Secretary of Defense (1). Can authorize any quantity of items to be procured. (2). Cannot exceed the quantity specified in the defense appropriation act. (3...
*April 23, 2013*

**Math - Please help**

I need help on the following please? A group of clowns performs in a ring with an area of about 2,123 square feet. What is the circumference of the ring? Choose the closest answer. 156 ft. 52 ft. 163 ft. 82 ft. Thank You. Please explain the answer
*April 12, 2013*

**8th Grade Math**

I need help on the following please? A group of clowns performs in a ring with an area of about 2,123 square feet. What is the circumference of the ring? Choose the closest answer. 156 ft. 52 ft. 163 ft. 82 ft. Thank You. Please explain the answer
*April 12, 2013*

**Physics**

A. mass X gravity X 18 people = 8476kgm/s^2 B. mass X gravity X sin(14) X 18 = 2050N C. Power = Force X Velocity 22,000 = 2050 X Velocity Velocity = 11m/s
*April 4, 2013*

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