Saturday

December 10, 2016
Total # Posts: 103,302

**math**

bjbjhh

*November 2, 2016*

**chem**

Consider the isotope arsenic-76 How many protons are in an atom of this isotope? 33 What is the mass number of this isotope? 76 How many neutrons are in an atom of this isotope? 43 What is the atomic number of this isotope? 33 Give the nuclear symol 76/33 As How many electrons...

*November 2, 2016*

**Algebra 2**

-b +/- square root of b^2 -4ac all divided by 2a 4 +- sq rt(16-4(1)(-1)) divided by 2 4 +- sq rt (16 +4) divided by 2 4+- sq rt(20) divided by 2 4+/- 2 sqrt 5 divided by 2 2+sqrt 5 or 2-sqrt 5 = x

*November 2, 2016*

**Math**

19 2/3 + x + x = 113 1/3 2x = 93 2/3 x = 46 5/6

*November 2, 2016*

**Adv function**

Express sec2x in terms of tanx and secx I know you have to sec(2x) = 1/cos(2x) = 1/(cos²x - sin²x) But how do you split that. Like how to simplify that?

*November 2, 2016*

**algbra**

You have a full time job at a clothing store that pays a base rate of $13 per hour, with time-and-a-half for hours over forty in a week. You also earn a 2% commission on your total sales for the pay period. You are paid biweekly. You have determined that the withholding amount...

*November 2, 2016*

**Math HELP!!**

good job

*November 2, 2016*

**Math**

Your mom ooooooooooooohhhhhhhhhhhhh

*November 2, 2016*

**Math**

4/5 x 100 = 80 shaded

*November 2, 2016*

**statistics**

Despite he outrageous incomes of some, the mean income of all aging rock stars is relatively modest: $75,000 with a standard deviation of $2,000. On that scale, Chubby Checker, appears to do better than average: at most, only 6.25% of aging rockers make more than he does. what...

*November 2, 2016*

**algebra 2**

f(x) = -4x + 7 and g(x) = 2x - 6.

*November 2, 2016*

**Calculus **

Find the particular solution that satisfies the differential equation and the initial conditions. F'(x) = 4x^2 f (-1)=3 F'(t)=10t-12t^3 f (3)=2

*November 2, 2016*

**physics**

Two buses leave a bus station and travel in opposite direction from the same standing point.if the speed of one is twice the other and they are 240km apart at the end of one hour. What is the speed of each km

*November 2, 2016*

**Chemistry**

How much heat is required to convert solid ice with a mass of 810 g and at a temperature of -18.0 °C to liquid water at a temperature of 62.5 °C? (The specific heat of ice is cice = 2100 J/kgK, the specific heat of water is cwater = 4186.8 J/kgK, and the heat of fusion...

*November 2, 2016*

**maths steve reiny**

Sqrt(x)^sqrt(x)=2 show solution step that all i need thanks

*November 2, 2016*

**Math, Precalc**

3^x + 5^(x+3) - 3^(x+4) + (1/3)5^(x+2)= 0 3^x(1 - 3^4) + 5^(x+2)(5 + (1/3)(1) ) = 0 -80(3^x) + (16/3)(5^(x+2) = 0 times -3/16 15(3^x) - 5^(x+2) = 0 15(3^x) = 5^(x+2) divide by 5 3(3^x) = 5^(x+1) 3^(x+1) = 5^(x+1) this can only be true if x = -1 that is, if 3^0 = 5^0 , which is...

*November 2, 2016*

**Math, Precalc**

Sue's time riding the bike = 5/15 hrs = 1/3 hr Sue's time walking the 2 miles = 2/3 hr total time = 2/3 + 1/3 = 1 hr total distance = 7 miles average speed = 7/1 = 7 mph

*November 2, 2016*

**Gaussian Elimination Method**

Write the system of equations as an augmented matrix ?????u=150?7s+4m=25019s?11m=300

*November 2, 2016*

**SS Check Answers**

did you mean 1967 or 1965?

*November 2, 2016*

**Texas History**

Answer please!!!!!!!!!!!!!!

*November 2, 2016*

**Texas History**

What is the answer?

*November 2, 2016*

**Texas History**

I am reading my book about this stuff but it is hard to find the answer for this. I need at least 4 sentences about this.

*November 2, 2016*

**Texas History**

Explain how the fall of the Alamo and the Goliad Massacre both hurt and helped the Texans' quest for independence in the Texas revolution. (4 pts)

*November 2, 2016*

**counseling**

stanford-binet

*November 2, 2016*

**Maths**

A metere long strip is cut into 12 equal pieces. What is the length of each pieces

*November 2, 2016*

**art history **

in the painting the wedding, each person is a

*November 2, 2016*

**art history **

in the painting the wedding, each person is a

*November 2, 2016*

**maths**

The cost of fencing a square field at 40paise per meter is rs.2000.Find the cost of watering the field at 80 paise per 100square

*November 2, 2016*

**maths**

The cost of fencing a square field at 40paise per meter is rs.2000.Find the cost of watering the field at 80 paise per 100square

*November 2, 2016*

**math**

(2x+1)^3

*November 2, 2016*

**Ad.func**

I just rlly don't have a clue how I should proceed with this question. A picture is hanging 3 meters high and is hanging so the bottom of the picture is 1 meter above you eye level. How far from the wall on which the picture is hanging should you stand so that the angle of...

*November 1, 2016*

**american goverment**

5. Which of the following policies represents current American foreign policy? (1 point) isolationism nation building containment international cooperation 5.D

*November 1, 2016*

**9th grade algebra (factoring with quadratic)**

Okay. thanks! It was confusing to me. I'll double check them for typos and look up quadratic formula.

*November 1, 2016*

**american goverment check answers**

6. In January 2013, the United States officially recognized the government of Somalia for the first time since 1991. Which of the following is one ...

*November 1, 2016*

**Chemistry**

Consider the reaction between 56.0 mL of liquid ethanol (C2H5OH; density = 0.789 g/mL) and 26.0 L of O2 at 27.0°C and a pressure of 1.95 atm. The products of the reaction are CO2(g) and H2O(g). Calculate the number of moles of H2O formed if the reaction goes to completion.

*November 1, 2016*

**math**

a. Express P (x)= 1/6 ; for x = 1, 2, 3, 4, 5, 6, in distribution form. b. Construct a histogram of the probability distribution P(x) =1 over 6 ; for x = 1, 2, 3, 4, 5, 6. c. Describe the shape of the histogram in part (b). (Please show all work) Thank You

*November 1, 2016*

**Pythagorean theorem **

How do I check my answer when my triangle is an Acute Triangle?

*November 1, 2016*

**Health**

they are all right i belive sorry if im wrong im only in 6th grade but i think there right :)

*November 1, 2016*

**Phys ED**

Apply your previously acquired knowledge of soccer and decide which position in basketball resembles the sweeper in soccer? A: Point guard B: Shooting guard C: Power Forward*** D: Small Forward

*November 1, 2016*

**statistics**

a social worker is involved in a study about family structure. She obtains information regarding the number of children per family for a certain community from the census data. Identify the random variable of interest, determine whether it is discrete or continuous, and list ...

*November 1, 2016*

**UTECH**

Your company has raised financing by issuing 25-year bonds on January 1, 2009. They mature on December 31, 2033 and have a par value of $1,000 and a coupon rate of 8%. Coupon payments are made semi-annually.

*November 1, 2016*

**math**

suppose that your bank pays 10% interest, compounded semiannually. Use table 12-2 of your text to find how much should be deposited now to yield an annuity payment of $400 at the end of every six months, for 4 years.

*November 1, 2016*

**Physics**

bnnhnn

*November 1, 2016*

**Math**

1.If the number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up. Example: 38 rounded to the nearest ten is 40. 1.If the number you are rounding is followed by 0, 1, 2, 3, or 4, round the number down. Example: 33 rounded to the nearest ten is 30

*November 1, 2016*

**history**

where and when were the workers used on large farms in your question?

*November 1, 2016*

**Chem**

which particle is larger in radius silver ion or neutral silver atom

*November 1, 2016*

**Math**

The length of a rectangle is 3 units shorter than one-third of the width, x. Which expression represents the perimeter of the rectangle?

*November 1, 2016*

**Social Studies 7 Pls CoRRect Mee**

b,d b a c

*November 1, 2016*

**history**

He is right TRUST ME 100%

*November 1, 2016*

**MATHEMATICS.**

FIND THE COMPOUND INTEREST OF 1400 IN 4YEARS AT 3% PER ANNUM

*November 1, 2016*

**la**

In "All Together Now," why does Barbara Jordan most likely mention the conflict in Bosnia?

*November 1, 2016*

**Probability**

suppose 45 students in an organization are male and 55 are female. Ten females and 15 males in the organization are graduating students. What is the probability that a: a.) student chosen at random is male or a graduating student? b.) students chosen at random is female ...

*November 1, 2016*

**la**

tolerance definition

*November 1, 2016*

**social studies**

its your boy is 100%

*November 1, 2016*

**Social Studies**

Is it b

*November 1, 2016*

**Chemistry **

Formula of (ch3ch2)2chch2ch(ch3)2

*November 1, 2016*

**language arts**

whats the answer

*November 1, 2016*

**Calculus**

Haha! Thank you!

*November 1, 2016*

**Calculus**

Find dy/dx at the point (-3, 1) for the equation x = y^3-9y^2+5. A. -1/17 B. -1/13 C. -1/15 D. 1/17 E. 1/15 I posted this question before with a typo, but the point still doesn't appear to be on the graph of the function.

*November 1, 2016*

**Math**

Calculate the pH and pOH in 5.10-3M HNO3

*November 1, 2016*

**pre algebra 8th grade**

Thank you so much.

*November 1, 2016*

**Physics**

A body A of a mass 0.16 kg exerts a force of 6.2x10^-10 N on a body B when the distance between their centers is 0.37 meters. What is the mass of body B?

*November 1, 2016*

**physics**

A block and tackle has a velocity ratio of 4 and it is used to vertically raise a load of mass 50kg.if the effciency is 80%,determine the minimum effort reguired to raise the load.

*November 1, 2016*

**Converse of the Pythagorean Theorem**

Can you please help me and my grandson? It says: The length of the sides of the triangle are 5m, 6m, and 7m. Is the triangle acute, right, obtuse? How can I check my answer to see if it was right?

*November 1, 2016*

**Algebra Pythagorean Theorem**

Can you please help me answer these and explain? Please? Determine whether the given lengths can be side lengths of a right triangle. 1) 6ft, 10ft, 12ft 2) 10in, 24in, 26in 3) 20m, 21m, 29m 4) 15cm, 17cm, 21cm 5) 14ft, 22.5ft, 26.5ft 6) 12yd, 35yd, 38yd

*November 1, 2016*

**Calculus**

Find dy/dx at the point (-3, 1) for the equation x = y^3-9x^2+5.

*November 1, 2016*

**Trig**

find all solutions of 2sinx=1-2cosx in the interval from 0 to 360

*November 1, 2016*

**Statistics**

Your pocket contains 2 quarters and 2 Nickels. You randomly pick one of the coins and without replacing it you pick a second coin. Are the events, Q1 = First pick was a quarter Q2 = Second pick was a quarter a) Independent? b) What is the probability of getting a quarter both ...

*November 1, 2016*

**Math**

Alex can complete a model rocket assembly in four hours less time than it takes Sean. Working together, they can complete the assembly in one and a half hours. How long would it take Alex to do the assembly working alone?

*October 31, 2016*

**Math**

Gabriel can ride his bike three times faster than he can run. He runs 9 miles and bikes 45 miles. If the total time for both activities is four hours, how fast can he run ?

*October 31, 2016*

**Adv. functions**

When you simplify: sin(pi+x)cos((pi/2)-x)-cos(pi+x)sin(x+(3pi/2)) What's the answer cause I got -2sinxcosx, which I don't know if can simplify to -2sinx But the answer key says -1 so. I'm not sure how to get that

*October 31, 2016*

**mgf liberal arts**

Four accounting majors, two economics majors, and three marketing majors have interviewed for five different managerial positions with a large company. Find the number of different ways that five of these people could be hired if the first two positions are to be filled by an ...

*October 31, 2016*

**Science **

What caused the syringe to leave a puddle of water after sitting in the sun for 10 minutes ?

*October 31, 2016*

**Math**

Situation: You exercised 24 hours each month for a year. How many hours did you exercise by the end of the year? You may be able to do the math mentally thanks to expanded notation and the Distributive Property How would I put this into distributive property??

*October 31, 2016*

**chemistry (charges)**

just want to check if this group is neutral, R-NH2 thanks!

*October 31, 2016*

**check my work (american goverment)**

Amelia is correct

*October 31, 2016*

**check my work (american goverment)**

1.C

*October 31, 2016*

**check my work (american goverment)**

1. Why was the Department of Defense created? (1 point) to place the U.S. Army and Navy in one executive department to establish a military chain of ...

*October 31, 2016*

**ENGLISH FAST!!!!**

Which synonym for fear most strongly suggests a fear that causes one to freeze in terror? Alarm Dread Fright Panic I say D

*October 31, 2016*

**Language Arts urgent!!**

thanks

*October 31, 2016*

**Language Arts urgent!!**

Oh, it is dictionary!!!

*October 31, 2016*

**Language Arts urgent!!**

Dictionary Encyclopedia Thesaurus Wikipedia I think Encyclopedia. Is that right??

*October 31, 2016*

**Language Arts urgent!!**

A student is writing a paper and needs to make sure she is using the word apprehension correctly. What reference book would help her check its part of speech?

*October 31, 2016*

**Math**

I need help with all of it

*October 31, 2016*

**math**

Suppose you deposit $600 in a savings account. The interest rate is 4% per year. Find the principal balance in the account after six years

*October 31, 2016*

**Maths**

A hexagon has 6 sides, find the sum of the interior angles.

*October 31, 2016*

**science, organic chemistry**

Determine the amount of compound remaining in the aqueous phase and organic phase and organic phase if a 5.0g organic compound is dissolved in 100 mL of water and is extracted with three 50-mL portion of ether (kb= 10). Compare this with one 150 ml portion with ether. Which is...

*October 31, 2016*

**Soail STuddies**

Why was agriculture important and life-changing for Ancient Egyptians?

*October 30, 2016*

**Physics 11 steve or any physics teacher helpURGENT**

thanks, why does total momentum need to be conserved?

*October 30, 2016*

**Finance 300**

Suppose a stock had an initial price of $94 per share, paid a dividend of $2.50 per share during the year, and had an ending share price of $76.50.

*October 30, 2016*

**History**

Is there a website that shows all the holidays they celebrate?

*October 30, 2016*

**History**

I'm doing a project for the Republic of Congo (Not the Democratic) and I have to find a holiday celebrated there and explain and name one food eaten on that holiday I chose National Youth Day but I cant find a specific food they eat on that day. Can anyone help?

*October 30, 2016*

**Social studies **

What are the causes of contemporary social problems

*October 30, 2016*

**engineering**

During drilling of a deep oil well, the drill pipe got rigidly stuck. It was necessary to determine the depth at which the jamming occurred. The engineer ordered the pipe subjected to a large upwards tensile force, i.e., she pulled on it. As a result, the top of the pipe came ...

*October 30, 2016*

**Algebra One **

Find the 20th term for 5,-5,-15,-25

*October 30, 2016*

**Lang Arts**

STORIES OF USEFUL INVENTIONS, excerpt By S. E. Forman 1911 THE MATCH There never was a time when the world was without fire, but there was a time when men did not know how to kindle fire; and after they learned how to kindle one, it was a long, long time before they learned ...

*October 30, 2016*

**Maths**

a bottle is 1/4 full of drink. If 500 ml of drink is added to it the bottle is 2/3 full. How many milliliters does the bottle hold when it's full?

*October 30, 2016*

**Math**

divide the sum of 19/16 amd 13/4 by thier difference

*October 29, 2016*

**Math**

Find the area of a path 2 metres wide built around a rectangular pool 10m by 4m.

*October 29, 2016*