Sunday

January 22, 2017
Total # Posts: 104,191

**Social Studies**

Which of the following is a serious economic problem in North Africa? A. lack of oil resources B. a decline in tourism C. unemployment** D. poor agricultural performance What language unifies much of North Africa? A. English B. French C. Moroccan D. Arabic** In which North ...

*October 28, 2016*

**AP Cemistry**

Alright, thank you. I'l let you know if I run into any more issues. And yes, I did see the correction.

*October 28, 2016*

**maths**

220 ft in diameter steve

*October 28, 2016*

**Chemistry**

A solution of concentrated NaOH is 16.7M. If the density of the solution is 1.02 g/mL, what is the percent by mass of NaOH? I have tried different calculations and molarity and % but im not catching on at all

*October 28, 2016*

**Chemistry**

A solution of concentrated NaOH is 16.7M. If the density of the solution is 1.02 g/mL, what is the percent by mass of NaOH? I have tried different calculations and molarity and % but im not catching on at all

*October 28, 2016*

**organic chemistry**

how can rotate R isomer into S isomer....and vice versa ???

*October 28, 2016*

**organic chemistry**

inversion of S configuration to R configuration?????

*October 28, 2016*

**Math**

If one be added to the numerator of a fraction it reduces to 1/5 if one be taken from the denomenator it reduces to 1/7 require the fraction

*October 28, 2016*

**Math**

Since the entrance is -15 feet and the diver is 1 foot deeper than 2/3 of the elevation, you will have to divide 2/3 by -15 which is -22 1/2 and since the diver is 1 foot deeper you subtract 1 from -22 1/2 which is -23 1/2. p.s i am a child you have to double check with your ...

*October 28, 2016*

**Algebra**

Let's say B stands for Billy and Z stands for his brother B+Z=210 if so we divide 210 in half 210/2=(105+50)+(105-50)=210 Now you can solve the rest. I hope this is right :)

*October 27, 2016*

**math check answers**

you invest $75.00 the first month and $100.00 the second month at 3.75% APR. How much interest do you get at the end of the second month? $0.23 $3.36 $3.59 my answer $3.13

*October 27, 2016*

**Math**

What is 51 tens and 9 ones

*October 27, 2016*

**math check answers**

You invest $75.00 the first month and $100.00 the second month at 3.75% APR. How much interest do you get at the end of the second month? $0.23 $3.36 $3.59 my answer $3.13

*October 27, 2016*

**Math m**

The train traveled 250 mi in 2 h . If it traveled at the same rate of speed, how long would it take the train to travel 600 mi?

*October 27, 2016*

**English**

Thank you!

*October 27, 2016*

**English**

When should a writer organize details from most important to least important? I have to write a paragraph on why I'm choosing the most-to-least method of organization over the other methods. I also have to state why I believe this method is the most effective way to ...

*October 27, 2016*

**math**

a woman is four times older than her daughter five years ago the product of their age was 175 find their present age

*October 27, 2016*

**maths**

a woman is four times older than her daughter five years ago the product of their age was 175 find their present age

*October 27, 2016*

**Social studies**

shabeka

*October 27, 2016*

**English**

Is this okay? Facebook, Instagram, Snapchat, Twitter, and Skype are all great social media sites that you can use for communicating with family and friends, as well as meeting new people. Facebook, Instagram, Snapchat, and Skype are great tools to keep in touch with family and...

*October 27, 2016*

**English**

For Brainstorm: I have Facebook, Instagram, Snapchat, Twitter, Youtube, and Skype. For Respond: I haven't written the paragraph yet, but I've jotted down a few things to put in it. The differences: Youtube and Twitter aren't the best way to communicate with family ...

*October 27, 2016*

**English**

I might have done the other sections wrong. Would you be willing to review them for me?

*October 27, 2016*

**English**

Journal Entry 3: Prewriting and Thesis Statement Brainstorm: Review the description of brainstorming in your textbook on page 111. Then write a list of all the social media and social networking websites and apps you might use to connect with friends and family and to meet ...

*October 27, 2016*

**math**

Can you please tell me your answer?

*October 27, 2016*

**Social Studies**

What type of agriculture developed in the Tidewater region? small tobacco farms cotton plantations isolated family farms rice plantations

*October 27, 2016*

**Social Studies**

For what purpose did the Great Wagon Road develop?

*October 27, 2016*

**Social Studies**

Approximately how many joined Nathaniel Bacon in attacking and killing Native Americans?

*October 27, 2016*

**Social Studies**

Where were the three major Spanish settlements in the Florida colony by 1763?

*October 27, 2016*

**science**

The lowest possible energy position for an electron is known as the ground state. true or false

*October 27, 2016*

**science**

1) Green Eyes The child will have green eyes with a genotype of Yy because green is dominant and the green trait (Y) is present. 2) Yy, yy You can find this answer by making a punnett square and crossing the Yy and yy genotypes.

*October 27, 2016*

**Math**

Use the Properties of Equality to solve each equation. 1. e + 7= 15 a. 22 b. 8*** c. -8 d. -22 2. r + 18 = 26 a. 8*** b. 6 c. 44 d. 54 3. a - 6= 19 a. 25 b. 13*** c. -13 d. -25 4. b - 3= -4 a. 7 b. 1 c. -1 d. -7*** I am having most trouble with the last question.

*October 27, 2016*

**Math**

that is not true. i know how it feels to be behind in math . jeez

*October 27, 2016*

**english**

Are those questions from teas 6?

*October 27, 2016*

**math**

Can you describes more detail, Please!

*October 26, 2016*

**math**

Andy finished his job 50% more work then Ali in the same amount of time. Both of them take 10 hours to finish a job. How many hours Ali to finish the same job?

*October 26, 2016*

**Maths**

A records voltages from 0 volts to 20 volts. If the average value for three readings on the meter was 16 volts, then what the smallest number possible reading, in volts?

*October 26, 2016*

**physics**

Fgvsyhgdih Gbgkn Hvgshv Gbgkn Chfuvuv Gjvug

*October 26, 2016*

**Math**

I'm estimating each product of fractions and whole numbers. I need to understand the steps to find the answers..... example: 5/7of22?

*October 26, 2016*

**Maths**

in a class of 73 children, 43 play bowling, 44 play softball and 17 play neither sport? How many play only bowling?

*October 26, 2016*

**maths**

what time on Friday is 10 hours 47 minutes before 09:26 on Saturday exactly on 24-hours watch?

*October 26, 2016*

**Math**

How do you use associative property to compute 2x8x2 mentally

*October 26, 2016*

**Math**

The first pattern of triangles it uses 4 matches ( 3 matches for build a triangle and 1 matches for connected to other triangles). a)Find the number of triangles if there are 100 matches? b) write the formulas

*October 26, 2016*

**History**

I said change because wouldn't that be a complete change? The interaciton differed? But if it is continuity does that mean like it's still a continuation of the same idea which is interaction, but it is just to a greater extent? So some things did change but its still ...

*October 26, 2016*

**History**

interaction between states and civilizations occurred to a greater extent than ever before in the third wave civilization period---is this a change or a continuity? * Change?

*October 26, 2016*

**History**

How were third-wave empires different from those of earlier periods? *

*October 26, 2016*

**Physics**

Still need help!!

*October 26, 2016*

**Physics**

A point mass block slides without friction on the loop-de-loop track of radius R as shown. From what height h must it be released from rest in order to make it around the loop without leaving the track? Show the equation and then plug the numbers into that equation and show ...

*October 26, 2016*

**Physics**

Still need help!!

*October 26, 2016*

**Physics**

Two identical massless springs of constant k = 200N/m are fixed at opposite ends of a level track, as shown. A 5 kg block is pressed against the left spring, compressing it by 0.15m. The block is then released from rest. The entire track is frictionless except for the region ...

*October 26, 2016*

**Physics**

Still need help!

*October 26, 2016*

**Physics**

How much work must be performed by a hand or other such agent to move the 8kg block very slowly 10 cm to the right if the attached spring was initally relaxed? Let k = 200 N/m and mK = 0.5. Show the equation and the plug the numbers into the equation and then the answer at the...

*October 26, 2016*

**Physics**

I still need help!!

*October 26, 2016*

**Physics**

A 3 kg object initially at rest is acted on by a non-constant force which causes it to move 3 m. The force varies with position as shown in the figure. a) How much work is done on the object by this force? b) What is the final speed of the object as it arrives at x=3m? Assume ...

*October 26, 2016*

**Chemistry**

The solubility of KI in ethyl alcohol is 2.00 grams of KI in 100.0 grams of this alcohol. From this information, calculate the molarity of this solution.

*October 26, 2016*

**Math**

Yellow=14 Blue=2 x yellow Red=2 x blue Blue=2x14=28 Red=2x28=56 Yellow=14 Blue=28 Red=56 14+28+56=Total Total=98

*October 26, 2016*

**Math**

Santo has 14 yellow markers. He has twice as many blue markers as yellow markers. He has twice as many red markers as blue markers. How many markets does he have in all?

*October 26, 2016*

**Aria**

A) Plug in 50 for s in the equation. 50=-16t^2+100t Move the 50 over. 0=-16t^2+100t+50 Use the quadratic formula to solve for t and neglect the negative answer. If you don't know the quadratic formula, it's: (-b plus or minus the square root of b^2-4ac)/2a B)Plug 0 in ...

*October 26, 2016*

**Spanish**

Yes, you did it right. In case you needed the endings, here they are: Yo: é Tú: ás El/ella/ustéd: á Nosotros: emos Vosotros: éis Ellos/ellas/ustédes: án Your irregulars are right too, so good job. I always had trouble ...

*October 26, 2016*

**Chemistry**

Would the answer be 49.44 moles?

*October 26, 2016*

**Chemistry**

It's supposed to be 6.55 lbs.

*October 26, 2016*

**Chemistry**

A gallon of isopropanol (IPA) weighs 6,55 lbs. Since 1 lb=453.6 grams, calculate how many moles of ethanol (MM=60.1 grams per mole) are in a gallon of this substance.

*October 26, 2016*

**Math**

The first step is to determine how much square footage you need. You can do this by riding the total area of the two rugs. 12 x 23=276 sq. feet But since you need two: 276 x 2=552 sq. feet Now, you can calculate the cost. 552 sq. feet x $6=$3,312

*October 26, 2016*

**SOCIAL STUDIES HELPP**

OMG SOO DAAANK 100%

*October 26, 2016*

**Algebra 1**

Choose the correct solution in roster form. N is the set of natural numbers that are factors of 12. {1, 2, 3, 4, 6} {1, 2, 3, 4, 6, 12}** {1, 2, 3, 4, 5, 6, 8, 12} {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}

*October 26, 2016*

**Algebra 1**

Suppose U = {1, 2, 3, 4, 5, 6, 7, 8} is the universal set and P = {2, 4, 6, 8}. What is P' ? {2, 4, 6, 8} {1, 2, 3, 4, 5, 6, 7, 8} {1, 3, 5, 7}** {1, 3, 5, 7, 8}

*October 26, 2016*

**Algebra 1**

Write the solution to the inequality in set-builder notation. 5r + 8 < 63 {r | r < 11}** {r | r < 15} {r | r < 71} {r | r < 8}

*October 26, 2016*

**Physics**

bob what is the answer

*October 26, 2016*

**Physics**

A ball of mass 8 kg moving with a speed of 2m/s and rebounds with the same speed.Determine the impulse experienced by the ball.

*October 26, 2016*

**7th American History**

Thank you!

*October 26, 2016*

**7th American History**

@Mrs.Sue

*October 26, 2016*

**7th American History**

Can someone help me please? I have to summarize why John Adams was not reelected in the election of 1800. I know that he wasn't because he declared war on his first term and Thomas Jefferson was a popular candidate, but are there any more reasons?

*October 26, 2016*

**Physics**

Since moment of inertia is a scalar quantity, a compound object made up of several objects joined together has a moment of inertia which is the scalar sum of the individual moments of inertia. A) A wooden cylinder has mass m and radius R. To be used as a machine part, its ...

*October 26, 2016*

**Physics**

I'm just pretty confused

*October 26, 2016*

**Physics**

A ball is tied to a string and whirled in a horizontal circle at a constant 4 revolutions per second. Categorize the following according to whether they are 0 in value, constant in value, or change: v: linear speed (scalar) v: linear velocity (vector) ar: radial (centripetal) ...

*October 26, 2016*

**american history**

what event led to the first shots being fired at the battles of lexington and concord

*October 26, 2016*

**History**

1. How did the Magna Carta affect the power of the English king? A. It had no effect on the king's power. B. It closely linked the king's power to the power of the nobles. C. It weakened the king's power. D. It strengthened the king's power. 2. What was ...

*October 26, 2016*

**Calculus**

Find the slope of x^2-16xy+y^2=1 at (1,1). Is this -1?

*October 26, 2016*

**geography**

during what period of time did global interdependence first emerge

*October 26, 2016*

**math**

Stanley has 3 times as much savings as Chole. Aaron has $38 less than Chole. They have a total savings of $2822. How much savings does Aaron have?

*October 26, 2016*

**query**

Any another method to solve it

*October 26, 2016*

**interior decoration**

the desk drawer should slide smoothly across

*October 25, 2016*

**Algrebra**

I don't understand on how to answer this question. Could you please help and tell me the parts for the graphs? 1) X,Y is a point in the first Quadrant Identify the location of: A.(-X,Y) B.(X,-Y) C.( -X,-Y) 2) X,Y is the point on the second quadrant. Find the location of: A...

*October 25, 2016*

**Physics**

yess! I can't figure this one out.

*October 25, 2016*

**Physics**

Are you in neils class too?

*October 25, 2016*

**Chemistry**

In a three reactions system the first two reactions are endothermic with DeltaH values of 138kj and 241kj. if the final reaction is exothermic what is the minimum value of DeltaH3 that would make the overall reaction exothermic? explain your reasoning. i beleive the minimum ...

*October 25, 2016*

**algebra**

One hundred fifty and fifty-seven hundredths in decimal notation ?

*October 25, 2016*

**science**

dumb

*October 25, 2016*

**science**

1.2 billion

*October 25, 2016*

**Math**

A year on Mars is 1.88 Earth years. If you are 13 years old on Earth, how old would you be on Mars? I don't know if I am supposed to multiply or divide. I also don't understand what the question is trying to state. Thanks

*October 25, 2016*

**math**

A man is five times older than his son. Four years ago, the product of their ages was 448. Find their present ages. (5x X x) - 4 = 448 x = 9.507

*October 25, 2016*

**math**

A man is five times older than his son. Four years ago, the product of their ages was 448. Find their present ages. (5x X x) - 4 = 448 x = 9.507

*October 25, 2016*

**math**

a class of 51 students ,23 are freshman,and 28 are juniors what fraction of students are freshaman

*October 25, 2016*

**Ela**

liul

*October 25, 2016*

**Maths**

8 people in the playground. How many ways can 6 people be selected to play? Find the rule.

*October 25, 2016*

**Maths**

Morgan combines 48 red marble and 45 blue marble, he divides them equally into baskets. Find the rules.

*October 25, 2016*

**Maths**

Morgan combines 48 red marble and 45 blue marble, he divides them equally into baskets. Find the way how he writes.

*October 25, 2016*

**stats**

A preliminary survey shows that 35% of college students smoke. In a class of 42 students, what is the probability that more than half the students smoke? Use Appendix B.1 for the z-values. (Round the z-value to 2 decimal places and the final answer to 4 decimal places.)

*October 25, 2016*

**Torque**

The meterstick shown to the right is 100 cm long. It is free to pivot around its center of gravity (CG), which is at the 50-cm mark. There is a 25.0-N block hanging from the 80-cm mark. Decide where each of the other blocks should be placed, one at a time, to balance out the ...

*October 25, 2016*

**chemistry**

Calculate the mass of oxalic acid needed to prepare 150 ml of 0.442 M C2H2O4.

*October 25, 2016*