Friday

December 9, 2016
Total # Posts: 1,832

**Math **

Evaluate 3a^2-2ab+10 A=-2 B=3

*December 9, 2016*

**Chemistry**

I need to find the pH of a 500 mL solution of pure water after adding 33.0 mg of H2SO4 and 18.0 mg of HCl. Please help! So far I have tried to find the moles of 33.0mg of H2SO4 and got 3.24. Then I calculated pH by multiplying the subscript of H (2) by the moles (3.24) and ...

*November 27, 2016*

**Chemistry**

?????????

*November 25, 2016*

**Chemistry**

the solubility of aspartic acid in water is .500 g in 100 mL at 25 degrees C. If .251 g of aspartic acid is dissolved in 50. mL of water at 50 degrees C and let solution cool to 25 degrees C. is the solution supersaturated, saturated, or unsaturated. the solution was not ...

*November 25, 2016*

**Math**

I need help with proofs in geometry.

*November 20, 2016*

**Chemistry **

The equation is N2 + O2 reacts 2NO Given 12.5 mg of oxygen reacts with 21.4 mg of Nitrogen what mass of product is formed

*November 15, 2016*

**Math**

-.1091

*November 6, 2016*

**Math**

No, Ms. Sue, but thank you!

*November 6, 2016*

**Math **

A car was valued at 30k in 1994, it depreciated to 15k by 2000. What was the annual rate of change between 94 and 2000?

*November 6, 2016*

**accounting**

please

*November 5, 2016*

**accounting**

help

*November 5, 2016*

**accounting**

$16,550

*November 5, 2016*

**accounting**

Determine the ending balance of the Merchandise Inventory account given the following transactions: TooDaLoo had a beginning balance of $8,500 in its Merchandise Inventory account. They purchased $45,000 worth of inventory on account from WeeParcel under the credit terms 2/10...

*November 5, 2016*

**Math**

A TV that usually sells for $172.36 is on sale for 25% off. If sales tax on the TV is 9%, what is the price of the TV, including tax?

*November 4, 2016*

**Math**

Thx!

*October 25, 2016*

**Math**

If the legs of a right triangle have lengths of 6 inches and 8 inches, what is the length of the hypotenuse in inches? A.11 B.13 C.10 D.16 Is the answer C?

*October 25, 2016*

**Language Arts**

1. Which of the following sentences uses the past perfect verb tense. A) By June, I will have owned the camera shop for a decade. B) After it was sold, I had owned the camera shop for 12 year as C) I cannot recall a time when I have not owned some kind of shop. D) I owned that...

*October 24, 2016*

**ipc**

A 95.00 kg man on ice skates catches a ball moving at 18 m/s. The man is initially at rest. The man and the ball move together after the collision. The ball's mass is 0.14 kg. What is the final velocity

*October 20, 2016*

**Physics**

A girl jumps off a platform with a horizontal velocity of 2.06 m/s and lands in the water 1.3 s later. Gravity is 9.8m/s^2. How high is the platform.

*October 16, 2016*

**Algebra **

josh receives a weekly paycheck from his job. at the end of the week he has $52 remaining. throughout the week he spent a third of his paycheck at the mall and $8 for a new calculator. what the amount of his paycheck?

*September 22, 2016*

**math**

find the next three terms in 18,27,36,45

*September 21, 2016*

**Physics**

Initially (at time t = 0) a particle is moving vertically at 7.2 m/s and horizontally at 0 m/s. Its horizontal acceleration is 1.3 m/s 2 . At what time will the particle be traveling at 59◦ with respect to the horizontal? The acceleration due to gravity is 9.8 m/s 2 . ...

*September 20, 2016*

**Math**

Farmer has a field 1 square mile wide and 1 square mile wide. He divides it into fields 1/3 mile wide and 1/3 mile long how many fields will he have

*September 18, 2016*

**Algebra II**

y varies directly as x. if y=-5/8 when x=3/2, find x when y=2/5

*September 15, 2016*

**Chemistry**

What am I missing ? Should there be another step?

*September 15, 2016*

**Chemistry**

yes 0.2512 M stock so, 0.1410m x 0.01677L= 2.36457^-03 mole used. mols HCL = mols NaOH 0.2512M=2.36457^3

*September 15, 2016*

**Chemistry**

A 0.2512 stock sample of HCl is tirade to equivalence . If 16.77ml of 0.1410 M NaOH is required to reach the equivalence point, what volume of stock HCl was used for the tritation?

*September 15, 2016*

**Chemistry**

How many potassium ions are present in the following: 1) 3 moles of potassium chloride.

*August 28, 2016*

**Math**

The number of eggs Meg collected over the week were: Monday=8 eggs, Tuesday =5 eggs, Wednesday=6 eggs , Thursday=7 eggs, Friday=6 eggs, Saturday=5 eggs. By Sunday the weeks average was 6 eggs per day. How many eggs were collected on Sunday?

*August 10, 2016*

**Calculus rate of change **

Can you please check my answers and fix the ones if any that are wrong. Along with help on part d Consider the following fun f(x)=(3/4)x^3- x^3-3x^2+6x A.find relative extrema and identify max and min. I got x=1 max ,±√2 min B.determine the interval(s) where f(x) ...

*July 18, 2016*

**Calculus rate of change **

A machine starts dumping sand at the rate of 20 m3/min, forming a pile in the shape of a cone. The height of the pile is always twice the length of the base diameter. After 5 minutes, how fast is the base area of the base increasing? I honestly have no idea how to start this ...

*July 18, 2016*

**math**

please help me solve this problem quickly! John and Melanie are designing a science experiment for the school science fair. Their experiment requires a large amount of copper wire. They need 22 spools of copper wire that each contains 31 meters of wire. How many kilometer of ...

*July 5, 2016*

**math**

PLS... help me Give the least number that can be rounded to the nearest ten thousands

*June 27, 2016*

**Grammar**

THE 2ND ONE

*June 11, 2016*

**History**

Which best describes the role of Zionism in ongoing Middle East tensions? It led to disagreements between Arabs and Jews over control of Holy Land. <my choice It created and Independent Palestinian state opposed to Jewish people. It launched a war between moderate Arab ...

*May 24, 2016*

**Math **

Find the solution to each equation. 2^x=17 4log4^(x)=7

*May 19, 2016*

**Global Communication**

Great, thank you!

*May 9, 2016*

**Global Communication **

Is local culture an enabler or a hindrance in planning and executing a strategic communication campaign?

*May 9, 2016*

**Global Communication**

Thanks!

*May 9, 2016*

**math**

-6t+3(t-2)+5t=8

*May 9, 2016*

**Math**

Name things that are false about prime numbers

*April 30, 2016*

**Chemistry **

For the reaction 2 NO (g) + Cl2 (g) → 2 NOCl (g) If the concentration of NO is tripled, the rate of the reaction increases by a factor of nine. If the concentration of Cl2 is cut in half, the rate of the reaction is decreased to half the original rate. Find the order of ...

*April 17, 2016*

**algebra**

The size of the coyote population at a national park increases at the rate of 4.6% per year. If the size of the current population is 130, find how many coyotes there should be in 6 years. Use the function f(x)=130e^0.046t

*April 15, 2016*

**Math **

The Christmas Day parade in Manhattan, New York started on 145th St. The people walked north on this road for 4 miles. Then they turned on 34th street and walked for three more miles. 34th street has a bearing of N46°E. How far is the parade from their starting point on ...

*April 11, 2016*

**Math **

A jet took of at a rate of 310 ft per second and climbed in a straight path for 2.4 minutes. What was the angle of elevation of its path of its final altitude was 13,000 ft? Don't know what to convert 2.4 mins to. I got sin of the angle of elevation = 13,000/ ?

*April 11, 2016*

**Math **

An airplane flying at 390 mph has a bearing of N 28°W. After flying 3 hours, how far north and how far west has the plane traveled from its point of departure?

*April 11, 2016*

**Math **

A plane flies 430 miles at a bearing of S27°E, then turns and flies N63°E for 135 miles. Find the distance and the bearing from the starting?

*April 11, 2016*

**Math **

Jake is on the Appalachian Trial hiking. He hikes 8 miles due north and then turns and hikes an additional 10 miles at a bearing of N 67°W at which point he has reached a vista, eats lunch, and decides to bushwhack directly back to the trailhead. How far is he now from the...

*April 10, 2016*

**Math **

Jake is on the Appalachian Trial hiking. He hikes 8 miles due north and then turns and hikes an additional 10 miles at a bearing of N 67°W at which point he has reached a vista, eats lunch, and decides to bushwhack directly back to the trailhead. How far is he now from the...

*April 10, 2016*

**Math **

A plane flies 430 miles at a bearing of N27°E, then turns and flies N63°E for 135 miles. Find the distance and the bearing from the starting point to the ending point ? I found distance to be 450.69 mi by using A^2+B^2=C^2 because it is a right triangle. I am confused ...

*April 10, 2016*

**Chemistry**

Potassium oxide reacts with water to produce of potassium hydroxide. Please provide a balanced equation, and determine how much potassium oxide is needed to produce 80.5g of potassium hydroxide?

*April 5, 2016*

**Math**

A bucket holds 0.25 gallons of water. The water is poured into 20 equal-sized containers and there are 12 ounces left. How much does each of the smaller containers hold? (There are 128 ounces in a gallon.)

*April 2, 2016*

**math**

Determine the range of 𝑦 = −5cos(𝑥 + 𝜋 6)−3

*March 27, 2016*

**math**

Solve for x: 𝑦 = 2sin−1(𝑥 −5)

*March 27, 2016*

**math**

Write an equation for a cosecant function with a period of 3𝜋 and a range of (−‡,−2]¾[2,‡)

*March 27, 2016*

**Math**

You can put the numbers 1 to 10 on flashcards and show her like for the number 6 put 6 things she likes then do the rest of the numbers. And maybe she knows them give her a litte surprise like a reward her favorite thinGS, candy, toys, and etc

*March 16, 2016*

**math**

Two circles of radii 9cm and 13cm have their centres 15cm apart. Find the angle between the radii joining the centres to the points of intersection of the circles. Hence find the overlapping area between the two circles. - (Been struggling with this question, any help would be...

*March 10, 2016*

**Statistics**

Suppose a baseball pitcher throws fastballs 80 % of the time and curveballs 20 % of the time. Suppose a batter hits a home run on 8 % of all fastball pitches, and on 5 % of all curveball pitches. What is the probability that this batter will hit a home run on this pitcher'...

*March 6, 2016*

**english**

Which sentence contains the correct form of the possessive pronoun?

*March 2, 2016*

**problem solving**

Casandra had a pair of mice ,the female gave birth to 8 pups ,four males and four females. in the next term ,5 females each gave birth to 8 pups ,again 4 males 4 females.in the next term,each female does the same and no mice die .how many mice,male and female will Casandra now...

*February 28, 2016*

**maths **

four darts are thrown at a dart board .if all four darts hit the board,how many different point total are possible bullseye 9 second circle 7 third circle 4 outer circle 1

*February 28, 2016*

**math**

show that the constant p cannot lie between 1 and 2 if the equation px^2-p+10=2(p+2)x has real roots

*February 27, 2016*

**Chemistry**

Find the mass of urea (CH4N2O) needed to prepare 50.9 g of a solution in water in which the mole fraction of urea is 7.69×10−2.

*February 24, 2016*

**math**

In a three digit number, the hundreds digit is twice the units digit. If the digits are reversed, the new number is 396 less than the original number. Find the number.

*February 9, 2016*

**Social Studies**

Yay! Thanks I got them right

*February 9, 2016*

**Social Studies**

Ohh would it be D. Fresh water sources?

*February 9, 2016*

**Social Studies**

1. You are a migrant worker from India who has come to Kuwait. In which industry are you most likely to seek work? A. Fishing B. Oil** C. Farming D. Livestock B? 2. Which of the following has the greatest impact on human settlement in Iraq? A. Oil resources** B. Mountain ...

*February 9, 2016*

**History**

Which was a cause of the English Civil War? disagreements between Protestants and Jews rebellion in the English colonies a split between England and Scotland a dispute between the king and Parliament My answer: a dispute between the king and Parliament

*February 3, 2016*

**History**

Oh so it would be belief in predestination??

*February 3, 2016*

**History**

What about this one? Which was not a consequence of the Protestant Reformation? decline in literacy wars of religion belief in predestination the rise of nation-states My answer: wars of religion

*February 3, 2016*

**History**

Which was not a cause of the Protestant Reformation? worldiness and greed among Catholic officials sale of indulgences Council of Trent the Renaissance spirit of questioning authority My answer: Council of Trent

*February 3, 2016*

**Physics**

A cannonball is fired with initial speed v0 at an angle 30° above the horizontal from a height of 42.9 m above the ground. The projectile strikes the ground with a speed of 1.2v0. Find v0.

*January 31, 2016*

**Geometry**

What is the distance between point P(-2, 1, 3) and point Q(-1, 4, -2) to the nearest tenth? 35.1 units 9.3 units 18.4 units 5.9 units My answer: 18.4 units

*January 29, 2016*

**Science**

I am too

*January 29, 2016*

**English**

A- A woman became delirious and died

*January 20, 2016*

**Geometry(Check My Answers)**

What is the measure of a base angle of an isosceles triangle if its vertex angle measures 30? 30 150 15 75 <My choice Which lengths could be the side lengths of a triangle? 18cm, 6cm, 13cm <My choice 13cm, 22cm, 7cm 6cm, 18cm, 12cm 22cm, 13cm, 8cm

*January 15, 2016*

**Geometry**

What is the slope of the line that passes through (2,1) and (7,-2)? 5/3 -1/3 -3/5 1/5 My answer: -3/5

*January 15, 2016*

**Geometry**

The slope of lien b is 1/3. What is the slope of a line perpendicular to line b? -1/3 -3 1/3 3 My answer: -1/3 Note: there is no graph for this

*January 15, 2016*

**Geometry**

A line has a slope of 2 and passes through the point (4,0). What are the coordinates of another point that is on the line? (0,2) (2,0) (6,4) (4,6) My answer: (0,2)

*January 14, 2016*

**Geometry**

Yes I do, thank you

*January 14, 2016*

**Geometry**

A line segment has the endpoints (2,-5) and (-1,-1). What is the slope? -1/6 -6/1 -3/4 -4/3 My answer: -3/4

*January 14, 2016*

**math**

given that 4x^2-6x+9=A(x-1)(2x+1)+B(x-1)+C for all values of x, find the values of A, B and C

*January 14, 2016*

**Geometry**

108?

*January 13, 2016*

**Geometry**

What is the measure of an exterior angle of a regular pentagon? 72 36 120 108 My answer: 120

*January 13, 2016*

**Geometry**

Which angles describe <1 and <8? vertical angles alternate exterior angles alternate interior angles corresponding angles My answer: vertical angles

*January 13, 2016*

**Chemistry**

What does potassium nitrate form when it decomposes

*January 12, 2016*

**Health Help Me!!**

Awesome_prussia is 100% right Thank you:)

*January 10, 2016*

**statistics**

On the second day of Statistics, my teacher gave to me….two turtle doves. The pet store that my Statistics teacher frequents has 25 doves, of which 8 are turtle doves. (See * below. This is not a trick question as turtle doves really do exist. If you are visualizing a ...

*December 21, 2015*

**Math Help ASAP PLZ!!!!!**

Thank u so much Steve!!! This helps a lot! And also thank you for respecting my request to keep it simple. Not a lot of people these days do that. 5 stars! 😉 Thanks again!

*December 17, 2015*

**Math Help ASAP PLZ!!!!!**

I already got the following problem wrong, so I just need help understanding HOW to get the correct answer. "In order to get a certain shade of blue paint, a mixer must have 5 parts white paint to 3 parts blue. If 4 gallons of paint must be mixed, how many gallons of ...

*December 17, 2015*

**Geometry**

The contrapositive of the following conditional statement: If a figure has four sides, then it is not a triangle. A.If a figure does not have four sides, then it is a triangle. B.If a figure is a triangle, then it does not have four sides. C.If a figure is not a triangle, then...

*December 15, 2015*

**Physics**

A fire hose ejects a stream of water at an angle of 35.8 ° above the horizontal. The water leaves the nozzle with a speed of 21.9 m/s. Assuming that the water behaves like a projectile, how far from a building should the fire hose be located to hit the highest possible fire?

*December 13, 2015*

**Chemistry **

At its normal boiling point of 126°C n-octane, C8H18, has a vapor pressure of 760 torr. What is its vapor pressure at 25°C? the enthalpy of vaporization of n-octane is 39.07 kj/mol.

*December 11, 2015*

**Chemistry **

Rank the following in order of increasing vapor pressure at 298 k: CH3CH2OH, CH3OCH3, CH3CH2CH3.

*December 11, 2015*

**Math**

60-20 > 8x

*December 9, 2015*

**Physics **

A zebra sees a lion 300 m to his right. The zebra starts running at 25 KpH straight ahead to get away. At this point the lion launches himself on an intercept course at the zebra at a speed of 31 KpH. a. At what angle does the lion launch himself? b. If both animals continue ...

*December 8, 2015*

**Music**

Which units measure the amplitude of sound waves? seconds decibals watts hertz My choice: decibals

*November 30, 2015*

**math**

a six sided cubed is rolled. find the probability of p(6)

*November 28, 2015*

**M**

FIRST QUESTION: A SOCK DRAWER HAS 2 BLUE PAIR,4 WHITE PAIR, 4 BLACK PAIR. WHAT IS THE PROBABILITY YOU WILL PICK OUT A WHITE PAIR OR A BLUE PAIR. YOU REPLACE EACH PAIR AFTER YOU PICK. SECOND QUESTION: WHAT IS THE PROBABILITY YOU CAAN PICK OUT 1 BLUE, 1 WHITE, OR 1 BLACK. YOU ...

*November 28, 2015*