Wednesday

September 28, 2016
Total # Posts: 107

**math**

a researcher tagged 100 frogs in a pond. One week later she took a sample and only 5 out of 20 were tagged. Using this method how many frogs would she estimate are in the pond

*May 8, 2016*

**algerbra**

A plane flies from new york to chicago (a distance of 1,600 miles) at 400 mph. Returning from Chicago to New York it flies into a headwind and averages only 320 mph. How many hours total was the plane in the air for the entire trip?

*May 8, 2016*

**Walnut hill elementary**

6568

*October 14, 2015*

**math**

O ok its = because I had a 0 at the end that's considered to be invisible

*September 9, 2015*

**math**

Compare. Write <,>, or = 5.37 < 5.370 is the answer

*September 9, 2015*

**Calculus**

An airplane has airspeed of 724 k/h at bearing of North 30 degrees East. If the wind velocity is 32 from west. find the ground speed and direction of plane. Teacher gives solution of 740.5 k/hr and 57.9 degrees. Can anyone show steps?

*June 1, 2015*

**Social Studies**

Can you check my answers? My answers are marked with this: (*) 1. What was the effect of World War I on South Carolina? A. The state economy shrunk significantly. *** B. Citizens used more resources, such as meat and fuel, than before the war. C. Factory production slowed and ...

*April 2, 2015*

**Math**

The ratio of chickens to cows in the barn is 5 to 9. The ratio of people to buildings is 12 to 15.

*December 18, 2014*

**English**

true

*September 30, 2014*

**English**

Using the words biometer chronometer hydrometer micrometer perimeter phonometer thermometer put them in the correct order in sentences below. PLEASE CORRECT ME IF I'M WRONG!! 1.The THERMOMETER registered an increase in temperature. 2.He used a BIOMETER to determine which ...

*November 18, 2013*

**Algebra**

Itcwas a vine can

*September 17, 2013*

**language**

Which of the following sentences is punctuated correctly? A. After you sign the agreement it is too late of course, to change your mind. B. After you sign the agreement, it is too late of course to change your mind. C. After you sign the agreement, it is too late, of course, ...

*May 28, 2013*

**language**

Which of the following sentences is punctuated correctly? A. A carpenter must use certain tools, hammers, saws, chisels, to finish a job. B. A carpenter must use certain tools hammers, saws, chisels -to finish a job. C. A carpenter must use certain tools - hammers, saws, ...

*May 28, 2013*

**language**

The gist of the saying went something like this: If a person wants to get ahead in life, you have to be willing to work for it. Which of the following language conventions is violated in the sentence above? A. Use of a colon B. Verb tense C. Pronoun-antecedent agreement D. ...

*May 28, 2013*

**language**

Which of the following sentences is written correctly? A When properly designed, an automobile can achieve great fuel efficiency. B. When properly designed an automobile can achieve great fuel efficiency. C. When properly designed, great fuel efficiency can be achieved by an ...

*May 28, 2013*

**language**

Jimmy you must leave the room shut the door and be quiet. Which of the following options correctly punctuates the sentence above? A Jimmy, you must leave the room, shut the door, and be quiet. B. Jimmy; you must leave the room, shut the door and be quiet. C. Jimmy you must ...

*May 28, 2013*

**language (sentence fluency)**

Which of the following options best demonstrates sentence fluency? A The two boys went to the store to buy some milk with their mother and her boyfriend, who had a broken foot after supper. B. The two boys went to the store to buy some milk after supper with their mother's...

*May 28, 2013*

**math**

A gumball machine contains red, orange, yellow, green, and blue gumballs. Twenty percent of the gum balls are red, 30% are orange, 5% are yellow, 10% are green, and the rest are blue. If there are a total of 120 gumballs, how many more blue gumballs are there than yellow ...

*May 28, 2013*

**math**

Three pools are being drained for the winter. It takes Pool B twice as long to drain compared to Pool A, and it takes Pool B three times as long to drain compared to Pool C. If Pool C drains in 6 hours, which of the following is the number of hours it takes Pool A to drain

*May 28, 2013*

**math**

7 minutes, 15 seconds per mile B. 7 minutes, 30 seconds per mile C. 8 minutes, 15 seconds per mile D. 8 minutes, 30 seconds per mile

*May 28, 2013*

**math**

Two runners are competing in a race. One runner averages a pace of 7 minutes per mile and finishes the race in 28 minutes. The second runner finishes the race in 30 minutes. Which of the following is the pace of the second runner

*May 28, 2013*

**algebra**

x+2.5=8 x=8-2.5 x=5.5 hours

*May 17, 2013*

**MATH**

3/4

*March 24, 2013*

**Algebra**

Please help with this: Write a polynomial in standard from with the zeros -2, -2 and 2. I remember that (x-a)(x-b)(x-c)=0 but I forget what exactly to do.

*March 5, 2013*

**math**

10 tsp 5 tsp/32oz x 2 lbs/x tsp x 16 oz/1 lb equals 10 tsp

*March 1, 2013*

**math**

8 cups

*March 1, 2013*

**Math**

If b varies directly as the square root of w and b equals a negative 24 when w equals 36, what is w when b is equal to 1/8?

*September 16, 2012*

**Chemistry. Please help**

How many milliliters of glacial acetic acid (17.3 M) would you need to titrate an aqueous solution of 100 grams sodium acetate (MW = 82.0 g mol-1) to get a final pH of 5.00 and a final volume of 1.00 liter? The pK’ for acetic acid is 4.76. Show your work.

*September 10, 2012*

**Chemistry really desperate**

How many milliliters of glacial acetic acid (17.3 M) would you need to titrate an aqueous solution of 100 grams sodium acetate (MW = 82.0 g mol-1) to get a final pH of 5.00 and a final volume of 1.00 liter? The pK’ for acetic acid is 4.76. Show your work.

*September 10, 2012*

**Desperate chemistry**

How many milliliters of glacial acetic acid (17.3 M) would you need to titrate an aqueous solution of 100 grams sodium acetate (MW = 82.0 g mol-1) to get a final pH of 5.00 and a final volume of 1.00 liter? The pK’ for acetic acid is 4.76. Show your work.

*September 10, 2012*

**Chemistry**

How many milliliters of glacial acetic acid (17.3 M) would you need to titrate an aqueous solution of 100 grams sodium acetate (MW = 82.0 g mol-1) to get a final pH of 5.00 and a final volume of 1.00 liter? The pK’ for acetic acid is 4.76. Show your work.

*September 10, 2012*

**5th grade religion**

I dont know how do i find it

*September 5, 2012*

**math**

Marsha is using an 8-ft ladder to pick apples from a tree. If the bottom of the ladder is 3-ft from the bottom of the tree , calculate the angle of elevation to the nearest degree.Make sure to include diagram.

*July 6, 2012*

**3rd grade math**

I CANNOT BELIEVE THIS IS A THIRD GRADE WORKSHEET! THIS IS SOO INAPPROPRIATE. THEY HAVE NEVER DONE LONG DIVISION OR REMAINDERS & THERE IS ONE WEEK OF SCHOOL LEFT & THIS IS WHAT THE TEACHER HANDS OUT.....86 DIVIDED BY 9, 17 DIVIDED BY 3, 73 DIVIDED BY 8 ! HOW MANY FLUID OUNCES ...

*May 29, 2012*

**Consumer math !!!! please check**

Drew borrowed $1,250. He made 12 payment of $118

*May 24, 2012*

**Math Word problems (3rd Grade)**

That's what I thought, but that sure seems a little advanced for 3rd grade. Thank you so much for all your help I really appreciate it!

*April 30, 2012*

**Math Word problems (3rd Grade)**

Thanks, We did that part, but what confused us was that the problem said 8 bouquets with the SAME NUMBER of each type of flower in each bouquet. Maybe I'm just reading into it to much

*April 30, 2012*

**Math Word problems (3rd Grade)**

Shondra has 72 roses and 48 lilies. She wants to make 8 bouquets with them, with the same number of each type of flower in each bouquet. How many flowers will be in each bouquet?

*April 30, 2012*

**Chem**

apples.

*April 24, 2012*

**math**

If you are calculating surface area of a right circular cone topped with a hemisphere. the radius is 4 cm and the rt angle is 8 cm...what is the lateral surface area. Is it 8.94 or is it 9? Explain answer please. Thanks

*March 16, 2012*

**math**

what distance formula would you use to solve this problem? A boat starts at point A, moves 3 km due north, then 2km due east, then 1 km due south, and 4km due east to point B. Find the distance AB.

*March 16, 2012*

**pythagorean theotem**

what is A=7 ft b=21 ft

*December 18, 2011*

**geometry**

to make them more streamlined

*November 14, 2011*

**trig**

whats 21° 44' 3" as a decimal to the nearest thousandth of a degree

*November 7, 2011*

**physics **

Objects of masses m1 = 4.00 kg and m2 = 9.00 kg are connected by a light string that passes over a frictionless pulley as in the figure below. The object m1 is held at rest on the floor, and m2 rests on a fixed incline of θ = 41.0°. The objects are released from rest...

*September 27, 2011*

**physics **

Objects of masses m1 = 4.00 kg and m2 = 9.00 kg are connected by a light string that passes over a frictionless pulley as in the figure below. The object m1 is held at rest on the floor, and m2 rests on a fixed incline of θ = 41.0°. The objects are released from rest...

*September 27, 2011*

**algebra**

i have tried for a long time and just cant come up with the rule for this function table. x= 1 2 3 4 5 and 6 y=180 165 150 135 120 and 105 if any one can help me thanks.

*September 1, 2011*

**geometry**

have an area of 11 square centimeters. I am made up of whole square centimeters. My length is 4 cm. I am not a rectangle. What am l?

*May 19, 2011*

**math**

6n+5 if n =4.5 what is n

*April 26, 2011*

**Statistics**

Data Information: Wage Income Statistics: Men VS Women Wage gap, by description, is the difference in salary among two groups of people. The description is associated with the practice of paying one gender more than the other. For many years there has been speculation and ...

*April 23, 2011*

**ut**

The density of an unknown metal is 8.94 g/cm^3 and its atomic radius is 0.126 nm. It has a face-centered cubic lattice.

*January 26, 2011*

**chemistry**

how much energy would it take to completely melt 200kg of lead if the lead is currently at 25 degrees celcius

*December 8, 2010*

**3rd grade**

No. 3 unequal groups can not be multiplied.

*October 28, 2010*

**social studies**

i cant unscramble sartina

*September 27, 2010*

**science**

animals need what to get rid of body waste?

*September 20, 2010*

**9th grade**

y=6-2x 7x-y=3

*May 25, 2010*

**10th grade**

a rhombus has a perimeter of 44 centimeter and a diagnol 12 centimeters long. wat the area?

*May 24, 2010*

**Biology**

Suppose you have monohybrid pea plants in your garden and find that they produce round seeds to wrinkled seeds in the ratio of 3:1. If the alleles are designated R and r, respectively, what are the probable genotypes of the wrinkled seeds produced by your plants?

*April 22, 2010*

**pre-calculus**

Find the transformed equation of the hyperbola xy = 4 when rotated 45?

*March 25, 2010*

**geometry**

Determine wether triangle deef is cogruent to triangle pqr given the coordinates of the verticles. D(-6,1),E(-1,-4),P(0,5),Q(7,6),R(5,0)

*February 23, 2010*

**math**

Explain how you could show five less than a number using an expression.

*November 9, 2009*

**U.S. History**

Define the following: 1) Valley Forge 2) Battle of Trenton 3) Battle of Saratoga 4) Battle of Yorktown 5) Treaty of Paris of 1783 6) Egalitarianism

*October 21, 2009*

**birchwood elementary**

what is te magnitude estiamte of 6 divide by 78.6 and wht place value is it in

*October 13, 2009*

**physics**

Rubidium forms the postive Rb+ Is this ion larger or smaller then the neutral atom? Explain PLEASE

*October 11, 2009*

**Statistics**

The ____________ is a hypothesis-testing procedure in which there are two separate groups at people tested and the population variance is not known. - t test for dependent means - t test for a single sample - t test for independent means - t test for repeated measures

*October 11, 2009*

**Statistics**

Suppose a researcher wants to study the effectiveness of a new reading program for students who have not acquired the necessary reading skills by the time they reach the 8th grade. A randomly selected group of 50 students from a local junior high with poor reading skills will ...

*October 11, 2009*

**Statistics**

Consider a study in which the population variance estimate based on treatment group of 14 participants is 8, and the population variance estimate based on a control group of 17 individuals is 9. Compute the pooled estimate of population variance. - 7.25 - 8.55 - 9.22 - 10.05

*October 11, 2009*

**Statistics**

Cohen's conventions for the t test for independent means are approximately _____ for a small effect size, ____ for a medium effect size, and ______ for a large effect size? - .1, .3, .5 - 2, 4, 6 - .2, .5, .8 - 3, 6, 9

*October 11, 2009*

**Statistics**

A sociologist interested in cultural differences compared women of two ethinic groups on a Role Approval Index (high scores mean high degrees of approval of one's social role). The results are as follows: Ethnic Group A: N = 15 M= 55 S2 = 6.5 Ethnic Group B : N = 23 M= 51 ...

*October 11, 2009*

**Statistics**

If the standard deviation of the distribution of the difference between means is .76, what is the t score? - (15 - 23) / 0.76 = -10.53 - (0.76)(15-23) = -8.00 - [(6.5 + 4.5)/2][0.76] = 4.18 - (55 - 51) / 0.76 = 5.26

*October 11, 2009*

**Statistics**

In an analysis of variance, if the null hypothesis is true then: - The research hypothesis is also true -You will need fewer participants for the experiment - There is less variance among the sample means than if the null hypothesis was not true - The within-group estimate of ...

*October 11, 2009*

**Statistics**

A mathematically defined curve that is the comparison distribution used in ANOVA is called the: - Normal distribution - Chi Square distribution - F distribution - T distribution

*October 11, 2009*

**Statistics**

Suppose a researcher wants to study the effectiveness of a new reading program for students who have not acquired the necessary reading skills by the time they reach the 8th grade. A randomly selected group of 50 students from a local junior high with poor reading skills will ...

*October 11, 2009*

**Statistics**

S2Within" equals: - the sum of squares within each group - the square root of the standard within-group deviations from the mean - the squared variance within groups - the population variance estimate based on the variation within each of the groups.

*October 11, 2009*

**algebra **

what is the next number in the following series? 16 21 26 26 12 5 ? hint" just because numbers are used doesn't always mean the relationship between them is mathematical. these numbers spell a word

*September 10, 2009*

**Math**

The side of a square is (Radical 18). What is the area of the square? A) 18 B) 36 C) 9 D) 4 (radical 18)

*September 7, 2009*

**geometry**

The measure of an angle's supplement is 44 less than the measure of the angle. Find the measure of the angle and its supplement.

*August 27, 2009*

**math**

Family income $61,575

*May 23, 2009*

**Pre cal**

how would you find the exact value of this expression?? 2sin15°cos°

*April 18, 2009*

**Math**

New Car. A game show gives away 2 new cars. One car is worth $50,000 and the other car is worth $40,000. Two members of the audience are randomly selected to participate and recieve one of the two new cars. What is the expeted value if you are randomly chosen and you had to ...

*March 18, 2009*

**Math**

Raffle. There is a prize drawing for a new computer and a new stereo system. Suppose there are 1500 raffle tickets sold. The computer is worth $1000 and the stereo is worth $500. If the ticket cost $5, what is the expected value if you purchase one ticket?

*March 18, 2009*

**Calc**

A particle is moving along the curve y= 3 \sqrt{3 x + 4}. As the particle passes through the point (4, 12), its x-coordinate increases at a rate of 4 units per second. Find the rate of change of the distance from the particle to the origin at this instant.

*March 15, 2009*

**math**

express 2/5 as a percent

*December 13, 2008*

**GEOMETRY**

a type of mean or average, which indicates the central tendency or typical value of

*November 17, 2008*

**Math**

x^2+9x/x^2-81

*October 22, 2008*

**5th grade**

what does an oblique line look like

*October 8, 2008*

**2nd grade science**

they live in groups

*August 24, 2008*

**College**

is this a good field of study? communication degree. what kind of job can I obtain with this degree

*March 24, 2008*

**Physics**

If you are viewing a hologram and you close one eye, will you still perceive depth? Explain.

*March 23, 2008*

**Physics**

How can you determine the polarization axis for a single sheet of Poloroid?

*March 23, 2008*

**Physics**

The digital desplay of watches and other devices are normally polarized. What related problem can occur when wearing polarized sunglasses?

*March 23, 2008*

**Physics**

Why are interference colors more apparant for thin films than for thick films?

*March 23, 2008*

**criminal justice**

if the officer interprets the slang in his report, what if that is inaccurate?

*February 26, 2008*

**criminal justice**

If you were an investigator writing a report on a suspect whom you believe to be guilty but for whom the evidence is too weak to go to trial, would you exaggerate or add to the facts in your report? Why or why not?

*February 26, 2008*

**biology**

how are glucose and ATP the same and how are they different...help would be awesome

*January 24, 2008*

**world history**

thanks ms. sue

*January 23, 2008*

**world history**

what is the significance of the fall of the roman empire?

*January 23, 2008*