Tuesday

June 28, 2016
Total # Posts: 448

**Chemistry**

Which amount of heat is released when 75.0 g of water at 0° C is frozen to ice?
*May 29, 2016*

**Math**

Which is equivalent to the inequality shown below? z/2 (less than equal too) - 15 a, x (x greater than equal too) - 7.5 b. x (less than or equal too)-7.5 c. x (greater than equal too) - 30 d. x (less than equal too) - 30 How do I solve this problem
*April 20, 2016*

**Math**

A mirror is 3 1/2 foot wide is hung in the center of a 9 foot long wall. How much wall space is left on each side of the mirror?
*April 20, 2016*

**physics **

Calculate the amount of heat required to raise the temperature of 1kg of water from 30 degrees celsius to 60 degrees Celsius
*February 16, 2016*

**L.A**

yes that is the title
*January 21, 2016*

**math**

Quinn and Karen are traveling towards each other from points that are 420 miles apart. If Karen is traveling 18 mph faster than and they meet after 7 hours, how fast was each traveling?
*January 17, 2016*

**Science (correct?)**

smart one :) is 100% right
*January 3, 2016*

**Math**

Nico is saving money for his college education. He invests some money at 8%, and $1900 less than that amount at 7%. The investments produced a total of $257 interest in 1 yr. How much did he invest at each rate?
*November 12, 2015*

**Family Dynamics**

Cultural
*October 30, 2015*

**Geography**

Likely, the economic impact on Mexico will be negligible due to the fact that the most recent hurricane landed in a relatively not well populated area, but it will potentially harm any local business due to the destructive gale force winds of over 200 mph. However, one can ...
*October 25, 2015*

**Plz Help----History**

its c
*October 23, 2015*

**Math**

This is dependent on whether an extra English or Mathematics class can be counted on as an elective.
*October 22, 2015*

**Chemistry**

The equation is: CuSO4(s) + Zn(s) -> Cu(s) + ZnSO4(aq) 3.22 g of powdered zinc is added to 200ml of 0.5M copper sulfate solution. What mass of copper is deposited? Hi guys. I am confused about the stoichmetry question. Q: The equation is: CuSO4(s) + Zn(s) -> Cu(s) + ...
*October 10, 2015*

**Science **

An electron travels 1.23 m in 4.66 × 10−8 s. How fast is it traveling? Answer in units of m/s.
*October 9, 2015*

**Conversions?**

1) Express 4106 mockingbirds in kilomockingbirds. Answer in units of kmockingbird. 2) Express 10^−3 phones in microphones. Answer in units of µphone.
*October 9, 2015*

**Chemistry**

A sphere of metal has a radius of 5.7 cm and a density of 8.33 g/cm^3. What is the mass of the sphere? Answer in units of g.
*October 9, 2015*

**Chemistry**

What is the mass of water required to fill a circular hot tub 3.6 m in diameter and 1.3 m deep? Answer in units of kg.
*October 9, 2015*

**math**

25,26,27,28,29,30,31,32,33,34,35, (was not there any other criteria?)
*October 8, 2015*

**Biology**

protein and carbohydrate
*October 7, 2015*

**algebra**

The weight of a rock sample is measured to be 2.5 pounds. What is the percent of error in the measurement?
*September 29, 2015*

**math conversions**

If a 68.1 g sample of food will produce 12200 food calories when it is metabolized, how many scientific calories are produced per gram of food?
*September 26, 2015*

**Math**

Assume that all chickens have 4904 feathers. If it takes you 1.9 seconds to pluck 69.8 feathers, how many hours would it take you to defeather 5157 chickens?Answer in units of hours.
*September 26, 2015*

**social studies**

2. What did the New England Colonies produce? How did this affect its economy? 3. What was the Mayflower Compact? How did it influence the representative government of the U.S? 4. What was the Fundamental Orders of Connecticut? How did it influence the representative ...
*September 24, 2015*

**United States History**

"Middle Colonies ID's" Describe the social structure of New York
*September 17, 2015*

**PHYISCS**

A ball is thrown upwards. What is its initial vertical speed? The acceleration of gravity is 9.8 m/s^2 and maximum height is 4.6 m ,. Neglect air resistance. Answer in units of m/s
*September 14, 2015*

**mechanics: spring problem**

1.0 Kg
*September 3, 2015*

**Math**

Please help me with this question solving for x. Thanks. 4^x = 10 - 4^(x + 1)
*August 31, 2015*

**Math**

In a certain industry, 35% are female, 72% work full time and 18% are females who work full time. Probability that a randomly chosen employee is female and does not work full time? A: 0.18 B: 0.54 C: 0.11 D: 0.17 E: 0.098 I got 0.098 because I did 0.35 * 0.28. The actual ...
*July 31, 2015*

**Maths**

Can someone please help me out here. I can't figure out how to do them. I need Pr(A) to do them with the formulas that I know. Please help! Given that Pr(B) = 1/5, Pr(A|B) = 1/3 and Pr(A|B') = 1/3. Determine: a) Pr(A and B') b) Pr(A) c) Pr(B'|A)
*July 31, 2015*

**Math**

I tried so hard for the question below and I couldn't figure it out. Please show some working out. Thanks 10 owners of pedigree dogs will enter the arena to parade their dogs by walking around a circular track. 3 dogs cannot get along together but their is no problem if ...
*July 28, 2015*

**physics**

A bar 4.0 m long weighs 400. N. Its center of gravity is 1.5 m from one end. A weight of 300. N is attached at the heavy end and a weight of 500. N is attached at the light end. What are the magnitude, direction, and point of application of the force needed to achieve ...
*July 9, 2015*

**physics**

hmm the answer is 9000N upward 12 meters from B?
*July 8, 2015*

**physics**

A uniform bar 25 meters long weighs 10,000 Newton's. From end A weight of 2500 Newton's is hung. At B the other end of the bar, there is a weight of 3500 Newton's. An upward force of 3000 Newton's is exerted 4 meters from B, while and upward force of 4000 ...
*July 8, 2015*

**math**

Multiple both sides by 35. Then you get 245.
*July 8, 2015*

**math**

.3455 move decimal two places to the left
*July 8, 2015*

**physics**

yes they are displaced the same amount
*July 7, 2015*

**physics**

A person who weighs 80kg sliding down a 30 degree incline with a coefficient of friction of .20 A person who weighs 80 kg sliding down a 20 degree incline with a coefficient of friction of .20 A person who weighs 40 kg sliding down a 20 degree incline with a coefficient of ...
*July 7, 2015*

**physics**

thank you for the help
*July 3, 2015*

**physics**

A 1500kg car moving at a speed of 20 m/s comes to a halt. How much work was done by the brakes? How fast can a 2.0 horsepower motor lift a 200 kg mass? A boy with a mass of 20 kg is riding on a 10 kg cart which is travelling at 3 m/s. He jumps off in such a way that he lands ...
*July 3, 2015*

**physics**

what work is done in raising a 3.0 kg mass from a 2.5 m high ledge to a 6.5 m high shelf? How much potential energy (Ep) does the mass now posses? Ok so for part 1 its w = m g h w = (3.0kg)(10m/s^2)(6.5m-2.5m) w = 120J now how do you find the potential energy?
*July 3, 2015*

**art**

Why the hell are you here then?
*May 12, 2015*

**Math**

30 seconds
*April 30, 2015*

**Chemistry**

is it 2?
*April 7, 2015*

**Chemistry**

1. If two moles of ZnCl2 separate into Zn+ and Cl- ions, how many moles of Zn+ ions are present? 2. How many moles of NO3- are present in one mole of Mg(N03)2? The answers to both of these are 1 mole, right?
*April 7, 2015*

**Geometry **

Two triangles are similar. The ratio of their areas is 1:4. If the height of the smaller triangle is 3 cm, how long is the corresponding height of the larger triangle, in centimeters? does this mean that i just multiply the numbers of the sides by four?
*April 1, 2015*

**Math**

if one container of applesauce contains 3 3/4 ounces, how much applesauce is in a 6-pack of applesauce
*March 30, 2015*

**math **

An equilateral triangle and a square both have perimeters of 48 inches. What is the ratio of the length of the side of the triangle to the length of the side of the square? Express your answer as a common fraction.
*March 26, 2015*

**geometry **

triangle ABC is isosceles with AC = BC and <ACB = 106 degrees. Point M is in the interior of the triangle so that <MAC = 7 degrees and <MCA = 23 degrees. Find the number of degrees in <CMB
*March 24, 2015*

**math **

Suppose that there are two functions, f and g. The domain of f is the interval [-2,10] and the range of f is the interval (-15,2]. The domain of g is the interval (-5,7) and the range of g is the interval [-2,3). Determine all information that you can about the domains and ...
*March 24, 2015*

**math **

Suppose that there are two functions, f and g. The domain of f is the interval [-2,10] and the range of f is the interval (-15,2]. The domain of g is the interval (-5,7) and the range of g is the interval [-2,3). Determine all information that you can about the domains and ...
*March 24, 2015*

**math **

Suppose that there are two functions, f and g. The domain of f is the interval [-2,10] and the range of f is the interval (-15,2]. The domain of g is the interval (-5,7) and the range of g is the interval [-2,3). Determine all information that you can about the domains and ...
*March 24, 2015*

**geometry **

An equilateral triangle and a square both have perimeters of 48 inches. What is the ratio of the length of the side of the triangle to the length of the side of the square?
*March 24, 2015*

**math**

The rectangle pictured consists of two squares placed side by side. The perimeter of the rectangle is 60 cm. What is the number of square centimeters in the area of the rectangle?
*March 23, 2015*

**math**

A 2 inch by 2 inch square has its area increased by 21 square inches producing a new square. How many inches long is a side of the new square?
*March 23, 2015*

**math **

An 8-inch by 8-inch square is folded along a diagonal creating a triangular region. This resulting triangular region is then folded so that the right angle vertex just meets the midpoint of the hypotenuse. What is the area of the resulting trapezoidal figure in square inches?
*March 23, 2015*

**math**

An isosceles, obtuse triangle has one angle with a degree measure that is 50% larger than the measure of a right angle. What is the measure, in degrees, of one of the two smallest angles in the triangle? Express your answer as a decimal to the nearest tenth.
*March 23, 2015*

**math **

Point X is on side of line AC of triangle ABC such that <AXB = <ABX, and <ABC - <ACB = 39 degrees. Find <XBC in degrees.?
*March 21, 2015*

**math **

Rectangle WXYZ is drawn on triangle ABC, such that point W lies on segment AB, point X lies on segment AC, and points Y and Z lies on segment BC, as shown. If <BWZ=26 degrees and <CXY=64 degrees, what is<BAC, in degrees?
*March 21, 2015*

**geometry **

In triangle ABC, the measure of <A is 86 degrees. The measure of <B is 22 degrees more than three times the measure of <C. What is the measure, in degrees, of <C?
*March 20, 2015*

**math **

Point X is on side AC of triangle ABC such that <AXB =<ABX, and <ABC - <ACB = 39 degrees. Find <XBC in degrees.
*March 19, 2015*

**math **

This can be proven by using congruent triangles. Because ACX=YCB are two adjacent angles, one angle is <ACB and the other being an angle that forms an equilateral triangle (which is 60 degrees), it means that ACX=<YCB=<ACB+60. Now we can see that AC=YC, and CX=CB, ...
*March 19, 2015*

**Geometry **

Let ABC be any triangle. Equilateral triangles BCX, ACY, and BAZ are constructed such that none of these triangles overlaps triangle ABC. a) Draw a triangle ABC and then sketch the remainder of the figure. It will help if (triangle) ABC is not isosceles (or equilateral). b) ...
*March 19, 2015*

**business math**

This question is based on a standard modeling problem in business. The unit cost of a item (or drink or chemical) affects how much of the thing is sold. The revenue is the amount of money raised from sales. Hence, raising price should drop sales, but that may result in more ...
*March 18, 2015*

**math **

What is the measure, in degrees, of the acute angle formed by the hour hand and the minute hand of a 12-hour clock at 6:48?
*March 12, 2015*

**math **

One interior angle of a triangle has a measure that is equal to the sum of the measures of the other two angles of the triangle. What is the measure of the smallest exterior angle of the triangle in degrees?
*March 11, 2015*

**math**

When the measures of the angles of a triangle are placed in order, the difference between the middle angle and smallest angle is equal to the difference between the middle angle and largest angle. If one of the angles of the triangle has measure 23 degrees, then what is the ...
*March 11, 2015*

**math**

The ratio of measures of two complementary angles is 4 to 5. The smallest measure is increased by 10%. By what percent must the larger measure be decreased so that the two angles remain complementary?
*March 11, 2015*

**math **

When the measures of the angles of a triangle are placed in order, the difference between the middle angle and smallest angle is equal to the difference between the middle angle and largest angle. If one of the angles of the triangle has measure 23 degrees, then what is the ...
*March 6, 2015*

**Math **

Two complementary angles, A and B, have measures in the ratio of 7 to 23, respectively. What is the ratio of the measure of the complement of angle A to the measure of the complement of angle B? Express your answer as a common fraction.
*March 4, 2015*

**Art**

The answer is D, you are correct.
*February 22, 2015*

**History**

yep they're all right, thanks!
*February 20, 2015*

**Math-percentages**

Do you not add blueberries to blackberries to find total berries in the smoothie? Then divide? 4blue +12black = 16 berries so 4:16 =25%
*February 18, 2015*

**Math-percentages**

The ratio of blueberries to blackberries in a fruit smoothie is 4:12. What percent of the drink is blueberry?
*February 18, 2015*

**3rd grage math**

Ghhhhh
*February 18, 2015*

**English 9**

GU
*February 11, 2015*

**social studies 8 ANSWER PLEASE!!!!!!!!**

d c d
*February 5, 2015*

**Math-ratios**

Ed, bob, and sue want to share 24 crackers. They each get 8. Bo comes along and they want to share with him too. Now they each get 6. A. what is the ratio of people? I think 3:4 B. What is the ratio of crackers? I think 8:6 or 4:3simplified. C. Explain how these two ratios are...
*February 3, 2015*

**Math-ratios**

Mary saved $44. On Thursday, she spent $7 of her savings. what ratio represents the portion of her total savings that she still has? I know she has $37 left but I don't understand what ratio it would be.
*February 3, 2015*

**MATH**

Two Trains are leaving Kansas City at noon. One is traveling northeast at 38MPH. The other is heading west at 46KPH. At what time in Los Angeles will the trains be 214 miles apart?
*January 28, 2015*

**L.A**

b a b a
*January 27, 2015*

**Math**

Suppose an object is dropped from a height h0 above the ground. Then its height after t seconds is given by h = −16t 2 + h0, where h is measured in feet. Use this information to solve the problem. A ball is dropped from the top of a building 59 ft tall. (Round your ...
*January 24, 2015*

**math**

A box with a square base and no top is to be made from a square piece of cardboard by cutting 4-in. squares from each corner and folding up the sides, as shown in the figure. The box is to hold 324 in3. How big a piece of cardboard is needed?
*January 24, 2015*

**Chemistry**

Iron 3 hydroxide reacts with acetic acid to form iron 3 acetate and water. If 45.4g of water are formed,what mass of iron 3 acetate will be produced? •Fe(OH)3+3HC2H3O2--->Fe(C2H3O2)+3H2O 45.4H2O( ? Fe(C2H3O)) ---------------------------------------- ( ? H2O)
*January 18, 2015*

**Art**

Diana is 100% correct
*January 15, 2015*

**programming**

Step 1: Design a flowchart or write pseudocode for a program that allows a user to enter 12 numbers, then displays all of the numbers (in the order they were entered) as well as the largest number and the smallest number. Step 2: Implement and test your design using VisualLogic.
*November 25, 2014*

**Astronomy**

Given the random orientation of planetary orbits relative to our line of sight, do you expect most or only a minority of all planetary systems to show transits?
*November 24, 2014*

**Astronomy**

Does the probability that a single-planet system shows transits increase, decrease or stay the same if the planet has a rather small or a rather large semi-major axis?
*November 24, 2014*

**Health And Physical Ed**

Ya they're all right, Zelda can suck it.
*November 23, 2014*

**Science**

Gamma rays is correct. Their radiation is so high that they are dangerous to humans.
*November 23, 2014*

**Math Help**

This is great, thx
*November 5, 2014*

**Physics**

A beaker of mass 5kg containing oil of mass 17.4 kg and density 8.5 x102kg/m3 rests on the scale A block of iron of mass 6.7kg is suspended from the spring scale and completely submerged in the oil as shown in Figure below. Determine the equilibrium readings of lower scale in ...
*November 3, 2014*

**physics**

Assuming you are on Earth, where acceleration due to gravity is 9.81 meters/second2, and you have a pendulum with a cord that is 0.65 meters long, what is the period?
*October 31, 2014*

**Physics**

For the remaining parts of this question use the following settings in "Uniform circular motion" mode. The initial angular velocity is 4.1 rad/s and the radius is 4.1 cm. (c) What is the speed of the object at a time t = 3.0 s after the simulation is started?
*October 25, 2014*

**PSAT**

From 1990 to 1995, the value of one share of stock of XYZ corporation increased by 25%. if the value was D dollars in 1995, what was the value in 1990?
*September 22, 2014*

**Science**

How might creativity help a scientist? a)creativity allows a scientist's findings to be trusted. b)Creativity alllows a scientist to develop new ideas or evaluate old ideas in a new way. c)Creativity assures that the scientist has a sense of right and wrong. d)creativity ...
*August 22, 2014*

**Science**

What type of scientific thinking did alfred wegener employ to develop his theory? A.Inductive reasoning B.Deductive reasoning C.Skeptical reasoning D.Subjective reasoning Is the answer A?
*August 22, 2014*

**Science**

How might creativity help a scientist? A.Creativity allows a scientist's findings to be trusted. B.Creativity allows a scientist to develop new ideas or evaluate old ideas in a new way. C.Creativity assures that the scientist has a sense id right and wrong. D.Creativity ...
*August 22, 2014*