Saturday

July 23, 2016
Total # Posts: 870

**Chemistry **

Theoretically how many grams of malachite should be formed when 1.5 moles of Copper Sulphate reacts with an excess of sodium carbonate?
*July 12, 2016*

**Algebra**

Johnny has 17 marbles. Mary has twice as many marbles as Johnny and half as many as Joe. How many marbles does Mary have?
*July 6, 2016*

**Physics **

What is the electric potential between two points 5.0 centimeters apart if the electric field between those points is a constant 250 Newtons/meter?
*June 17, 2016*

**Physics **

What minimum magnetic field is necessary to exert a 15 Newton force on a 175 milliCoulomb charge moving at 250 meters/secon through the field?
*June 17, 2016*

**Psychics**

What is the electric potential between two points 5.0 centimeters apart if the electric field between those points is a constant 250 Newtons/meter?
*June 17, 2016*

**Algebra 2**

A test has 200 points. THe mean is 120 and the standard deviation is 20. In order to pass the test one must score 140 points. If 360 people took the test how many passed
*May 19, 2016*

**Algebra**

Mark has $3.55 in nickels and dimes. If he has a total of 42 coins, how many of each kind of coins does he have?
*May 5, 2016*

**Algebra**

the sum of two numbers is 20. one number is 1 less than twice the other. find the numbers
*May 5, 2016*

**chemistry**

What volume of a oxygen at STP was collected? oxygen gas is collected over water at a temperaturee of 10 degrees C and a pressure 1.2 atm. The volume of gas plus water vapor collected is 293ml.
*April 6, 2016*

**Math**

I need help how to figure out a take off orders pair X y 0 6 0 8
*April 2, 2016*

**Pre-Calc**

Write the quadratic equation whose roots are 2 and 1, and whose leading coefficient is 1 Not sure even how to start?
*March 20, 2016*

**Pre-Calc**

A slice 1 unit thickness is removed from one see of a cube. Use the rational zeroes theorem and synthetic division to find the original dimensions of the cube, if the remaining volume is 48 cm^3 v= x^3 v=x*x*x x=(x-1)*x*x 48=(x-1)*x*x
*March 17, 2016*

**GEOMETRY/ALGEBRA**

A balloon, with a final volume of 40 cm3, took 4 min to fill. At what rate was the balloon filled? Choose exactly two answers that are correct. A. B. 40 cm3 = 4 min • r C. 40 cm3 • r = 4 min D. r – 4 h = 14 in.
*March 16, 2016*

**calculus**

The region bounded by y=x^2 and y=4 is rotated about the line y=-1. Find the volume.
*March 12, 2016*

**math**

The region bounded by y = x^2 and y = 4 is rotated about the line y = -1. The volume of the solid generated is given by
*March 12, 2016*

**math**

If the curves of f(x) and g(x) intersect x=a and x=b and if f(x)>g(x)>0 for all x on (a,b) then the volume obtained when the region bounded by the curves is rotated about the x-axis is equal to
*March 12, 2016*

**math**

The base of a solid is the region bounded by the parabola x^2 = 8y and y=4. Each cross section perpendicular to the y-axis is an equilateral triangle. Find the volume.
*March 12, 2016*

**math**

find the mode of 3,6,10,13,14,17,19,and 22
*February 17, 2016*

**algebra**

A rental truck costs $50 plus $0.40 per mile. Write an equation that gives the cost of driving the truck x miles Use the intersection of graphs method to determine the number of miles that the truck is driven if the rental cost is $70.
*February 13, 2016*

**algebra**

A rental truck costs $50 plus $0.40 per mile. Write an equation that gives the cost of driving the truck x miles Use the intersection of graphs method to determine the number of miles that the truck is driven if the rental cost is $70. Solve part (b) numerically with a table ...
*February 13, 2016*

**Chem**

For a substance to look red, describe how it interacts with white light?
*February 5, 2016*

**math **

r=9mph,t=2hours d=
*January 29, 2016*

**math **

r=9mph,t=2hours d=
*January 29, 2016*

**math**

An airplane descended 149ft and rose 112 ft Write a number sentence to show the results.
*January 27, 2016*

**Chemistry**

how do you make 400 ml pf 2 Osm solution of Mg CL2?
*January 27, 2016*

**History**

Thanks Ms.Sue!
*January 22, 2016*

**History**

I believe it's B.
*January 22, 2016*

**History**

How are communism and fascism alike? A.In both ideologies, the economy is based on capitalism. B.Governments establish totalitarian control over the population. C.Individual liberties are more important than the greater good of society. C? or B? .. C?
*January 22, 2016*

**Math**

If h is hours and n is the number of radios remaining, complete the equation: n= ____ x h = ____
*January 20, 2016*

**Geography**

Support
*January 9, 2016*

**Physics**

During volcanic eruptions, chunks of solid rock can be blasted out of the volcano; these projectiles are called volcanic bombs. (a) At what initial speed would a bomb have to be ejected, at angle 35degrees to the horizontal, from the vent at A in order to fall at the foot of ...
*December 28, 2015*

**Math**

For the first 30 days of a flu outbreak, the number of students on your campus who become ill is increasing. Which is worse: The number of students with the flu is increasing arithmetically or is increasing geometrically?
*December 17, 2015*

**Math**

In 1985, 10% of Americans had no close friends. On average, this has increased by approximately 0.77% per year a. Write a formula for the nth term of the arithmetic sequence that models the percentage of Americans with no close friends n years after 1984. b. If trends shown by...
*December 14, 2015*

**Math**

Write a formula for the general term (the nth term) of the arithmetic sequence shown below. Do not use a recursion formula. Then use the formula for a'n to find a20, the 20th term of the sequence. a'1 = -13, d = -5
*December 14, 2015*

**Math**

A section in a stadium has 20 seats in the first row, 23 seats in the second row, increasing by 3 seats each row for a total of 38 rows. How many seats are in this section of the stadium? Please explain using words, numbers, and formulas.
*December 13, 2015*

**Algebra**

A regular Pentagon measures 5 1/8cm on one side, what is the perimeter of the Pentagon
*December 8, 2015*

**Pre-calculus**

You start from an acorn and walk 300 yards do north. Then, you turn N 63° E and walk 260 yards. Then, you turn S 55° E and walk 240 yards. Then you walk back to the little acorn.
*December 1, 2015*

**Math**

A bank has two plans for checking accounts. With plan A the charge is $7.50 a month with no fee for each check. With plan B the charge is $3 a month plus an additional 20 cents for each check written.What is the least number of checks a customer must write each month in order ...
*November 29, 2015*

**Algebra**

Kelly is x years old. Mike is 2 years older than twice Kelly's age. The sum of Kelly and Mike's ages is 26. How old is Mike?
*November 29, 2015*

**english**

According to Dickinson, what is the character of Nature? Nature divides people from each other Nature is intentionally heartless Nature offers inspiration and meaning A or probably B.
*November 19, 2015*

**English**

What best describes Emily Dickinson's attitude towards death? A.sentimental B.angry C.accepting <-- With which statement would Emerson most likely agree? A.Objects of nature die, but civilization lasts forever B.Society offers the best way to commune with the divine ...
*November 19, 2015*

**History**

Thank you. I'll be going with the first answer.
*November 13, 2015*

**History**

Thank you... How did governments address the issue of fading enthusiasm for the war within their populations? They allowed soldiers more time to visit their families ? The desire for independence by __________ complicated the Ottoman Empire's entry into the war on the ...
*November 13, 2015*

**History**

12. What effect did technology have on World War I? It enabled nations to defeat their enemies with few casualties. It greatly increased the number of casualties. <- It decreased the amount of money needed to wage war. Question 13 The desire for independence by __________ ...
*November 13, 2015*

**Science**

electron microscope. ??
*November 13, 2015*

**History**

Thank you :)
*November 13, 2015*

**History**

Question 1 In the late nineteenth and early twentieth centuries, European nations formed alliances in order to __________. keep peace on the continent <-- build large empires increase their wealth Question 2 Which of the following answer choices correctly identifies the ...
*November 13, 2015*

**Math/ Proportions solve using unit rates**

Contestants in a dance-a-thon rest for the same amount of time every hour. A couple rests for 25 minutes in 5 hours. How long did they rest in 8 hours? 25/5=5 8/5= 1 3/8 hours
*November 11, 2015*

**Managerial Economics**

I am completely lost in working this problem. 1. The total operating avenues of a public transportation authority are$100 million while its operating costs are $120 million. The price of a ride is $1, and the price of elasticity of demand has been estimated to be -0.4. By law...
*November 7, 2015*

**English**

or is it the chaos and danger of war?
*October 30, 2015*

**English**

In terms of style and technique, "Old Ironsides" is __________. distinctive and unique similar to many European poems <--- B experimental and modern Why did Oliver Wendell Holmes write about the USS Constitution when rumors held that the ship was going to be ...
*October 30, 2015*

**Algebra**

a^2 x a^5/ a 3 = a^4? (h^2)^5 = 2 x 5 = h10? a^7/a^3 = 7-3 = a4? b^2 c^5 / bc^3 = bc2? or b2c?
*October 29, 2015*

**math**

thank you :)
*October 29, 2015*

**math**

1. Put these rational numbers in order from smallest to largest. 3/4= 0.75, 2/7=0.287, 2/10=0.2, 5/8= 0.66, 8/4=2 2/10, 2/7, 5/8, 3/4, 8/4 ? 2. Order the numbers from least to greatest. 1.5, 3.25, 1.66, 3.33, 2.4 A)1.5, 1.66, 2.4, 3.25, 3.33 <--- B)1.5, 1.66, 2.4, 3.33, 3....
*October 29, 2015*

**Math**

Sorry i need to get an A. 1. Put these rational numbers in order from smallest to largest. 3/4= 0.75, 2/7=0.287, 2/10=0.2, 5/8= 0.66, 8/4=2 2/10, 2/7, 5/8, 3/4, 8/4 ? 2. Order the numbers from least to greatest. 1.5, 3.25, 1.66, 3.33, 2.4 A)1.5, 1.66, 2.4, 3.25, 3.33 <--- B...
*October 29, 2015*

**Math**

6. B. {-4.3, -4, -12, 1.2, 9} -4.3 is smaller than -4.?
*October 29, 2015*

**Math**

1. Where is 4.89 on the number line Between 1 and 2 Between 2 and 3 Between 3 and 4 Between 4 and 5 <--- 2. 7.07 __ 8.83 a. < <--- b. > c. = d >= 3. Where is 8.366 on the number line? Between 6 and 7 Between 7 and 8 Between 8 and 9 <--- Between 8 and 10 4. ...
*October 29, 2015*

**math**

sorry 0.2 .. its 25
*October 29, 2015*

**math**

She is telling you to divide 5 by 2.
*October 29, 2015*

**Algebra**

:) thanks.
*October 29, 2015*

**Algebra**

Oh so it's between 0.00 and 1.00?
*October 29, 2015*

**Algebra**

Where would 0.764706 be on the number line? Between 1 and 2 < Between 0 and 1 Between -1 and 0 Between -2 and -1
*October 29, 2015*

**criminal justice**

Thank you :)
*October 29, 2015*

**criminal justice**

The harshest diposition that a juvenile judge can impose is? - Assignement to a diversion program - Incarceration <--- ? -Commitment to a residential facility -Probation The authority of both of the adult court system to hear juvenile cases is referred to as? -...
*October 29, 2015*

**Criminal Justice**

thank you
*October 29, 2015*

**Criminal Justice**

a suspect can be compelled to testify against himself at trial True or false? < True ? Prisons contain only felony criminals? T < or F Prisoners give up all consitutional rights when they are prosecuted or sentenced? T or F < The possibility of parole is a ...
*October 29, 2015*

**Amadlelo aluhlaza SS**

Yes, you need to add several medical classes to your course load though.
*October 27, 2015*

**Art History**

Ms. Sue?
*October 5, 2015*

**Art History**

anyone??
*October 5, 2015*

**Art History**

A. Pyramid B.Propaganda C.Babylonians D.Cuneiform E.Gudea of Lagash F.Ziggurat G.Amorites H. Clay I.The Sumerians J.Mesopotamia 1. Ancient region of Southwest Asia between the Tigris and Euphrates rivers. 2. They invented the wheel 3. Sumerian writing system 4. A semitic group...
*October 5, 2015*

**Math**

you need to set up a proportion you say 7 = x . == === 9 315 and solve by cross multiplying (7)x(315)=(9)x(x) solve for x by dividing both sides by 9 so x= (7/9)x 315 use calcualtor
*September 28, 2015*

**Chemistry 102**

What is the freezing point in ∘C of a solution prepared by dissolving 6.60 g of MgCl2 in 110 g of water? The value of Kf for water is 1.86 (∘C⋅kg)/mol, and the van't Hoff factor for MgCl2 is i = 2.7.
*September 23, 2015*

**Math**

a2+b2(-1+2)b
*September 17, 2015*

**Math**

a2+1+b2-2b
*September 17, 2015*

**Chemistry**

How many grams of magnesium oxide could be formed from the reaction of .248g of magnesium metal?
*September 14, 2015*

**Integrated math 1**

Consider the sample space S = {1, 2, 3, . . ., 10}. Let A = all odd numbers in S. Let B = all multiples of 3 in S. Compute P(B | A). Enter your answer as a fraction using the "/" and do not include spaces in your answer.
*September 8, 2015*

**medical**

Choose the combining form which best completes the following group: PONT/O, CRANI/O, FORAMIN/O, _______. A. COCHLE/O B. ENCEPHAL/O C. SALPING/O D. BLEPHAR/O plz help im lost
*September 1, 2015*

**Public health Administration**

Design a PowerPoint presentation (6-8 slides) in which you define public health. Provide an overview of Healthy People 2020 and present your perspectives regarding at least one of the leading health concerns posed by Healthy People 2020.
*June 9, 2015*

**geometry**

A quadrilateral has vertices A(3, 5), B(2, 0), C(7, 0), and D(8, 5). Which statement about the quadrilateral is true? ABCD is a parallelogram with non-perpendicular adjacent sides. ABCD is a trapezoid with only one pair of parallel sides. ABCD is a rectangle with non-congruent...
*June 8, 2015*

**math**

what is a probability of rolling a total of 5 when a pair of number cubes is rolled once
*May 25, 2015*

**subsition method**

x + 5y = 126 y = 3x +6
*April 29, 2015*

**english**

When an adverb modifies a verb with a helping verb, the adverb should generally be placed
*March 31, 2015*

**BUS math **

Bari Jay a gown manufacturer received an order for 600 prom dresses from China. Her cost is $35 a gown. If her markup based on selling price is 79%, what is the selling price of each gown? Round to the nearest cent.
*March 31, 2015*

**accounting**

A company purchased merchandise inventory at a cost of $8,500 with credit terms 2/10, net 60. If the company borrows $8,330 to pay for the purchase on the last day of the discount period and pays the loan plus interest in the amount of $8,466.93 on the last day of the credit ...
*March 7, 2015*

**Chemistry**

The dosage of technetium -99m for a lung scan is 20 uci/ kg of body weight. How many millicuries should be given to a 50.kg patient (1 mci=1000uci)
*March 2, 2015*

**Chemistry**

How much heat is needed to change 3kg of copper from a solid to a liquid? Heat of fusion = 205,000 J/kg
*February 23, 2015*

**Biology**

You have a stock solution with following components: glucose: 44 g/L NaCl: 191 g/L Tris Buffer: 275 g/L You mix 71 mL of the solution with water and bring the resulting solution to a final volume of 750 mL. What is the final concentration of glucose in g/L?
*February 10, 2015*

**Biology**

You prepare a solution by dissolving 319 g of glucose and 114 g of NaCl in water and bring the final volume up to 1,088 mL. What is the final concentration of glucose in g/L?
*February 10, 2015*

**Calculus**

At 2:00pm a car's speedometer reads 60mph, and at 2:10pm it reads 65mph. Use the Mean Value Theorem to find an acceleration the car must achieve. Answer( in mi/h2):
*February 8, 2015*

**Math**

If a and b are positive numbers, find the maximum value of f(x)=x^a(1−x)^b, 0≤x≤1 Your answer may depend on a and b.
*February 8, 2015*

**math**

The demand function for the Sicard wristwatch is given by the following function where d(x) (measured in units of a thousand) is the quantity demanded per week and x is the unit price in dollars. d(x) = 50 0.01x2 + 1 (0 ≤ x ≤ 20) (a) Find d'(x). d'(x) = (b...
*February 6, 2015*

**Math**

Thanks
*February 4, 2015*

**Math**

a-7 is divided by 10 = a-2 divided by 8
*February 4, 2015*

**Math**

a-7= a-2 ---- ---- 10 8 a=????
*February 4, 2015*

**College Algebra**

Translate the following statement. Into an alegebraic expression use x for your variable the sum of the cube if a number and seven times number
*February 3, 2015*

**Math**

An airplane in Australia is flying at a constant altitude of 2 miles and a constant speed of 600 miles per hour on a straight course that will take it directly over a kangaroo on the ground. How fast is the angle of elevation of the kangaroo's line of sight increasing when...
*February 1, 2015*

**Math**

preparing to make 4 white tents you discover each one will require 2.5 square yards of silk. If each square yard of silk costs $4.00, how much will it cost to make all the tents? Do I multiple 2.5 times $4.00 to get the answer?
*January 22, 2015*

**math**

Lee wants to cut this piece of canvas into two rectangles that are 3×2 and 3×5. He wants the sum of the areas of the two small rectangles to be the same as the area of the large rectangle. Can he do this? Explain
*January 20, 2015*

**algebra**

Ten years from now Tim will be twice as old as Jane was when mary was nine times as old as tim. Eight years ago, Mary was half as old as Jane will be when jane is one year older than Tim will be at the time when Mary will be five times as old as Tim will be two years from now...
*January 17, 2015*

**math**

It's been several years since I have had to do math and I am posed with this ? and don't recall how to find the answers. There is a fixed overhead of $1 per bolt. They make a run of 10,000 bolts at a total marginal cost of $70k. They sell them all, and lose $20k. What ...
*December 26, 2014*