# z

Most popular questions and responses by z
1. ## Chemistry

When solutions of KCl and Pb(NO3)2 are mixed, a precipitate forms. Which of the following is the balanced equation for the double replacement reaction that occurs? a. KCl(aq) + Pb(NO3)2 (aq) ¨ KNO3 (aq) + PbCl2 (s) b. KNO3 (aq) + PbCl2 (s) ¨ KCl(aq)

2. ## Physics

Adolf and Ed are wearing harnesses and are hanging from the ceiling by means of ropes attached to them. They are face to face and push off against one another. Adolf has a mass of 127 kg, and Ed has a mass of 65 kg. Following the push, Adolf swings upward

3. ## Probability & Statistics

To help consumers assess the risks they are taking, the Food and Drug Administration (FDA) publishes the amount of nicotine found in all commercial brands of cigarettes. A new cigarette has recently been marketed. The FDA tests on this cigarette yielded

4. ## math

Find the values of the trigonometric functions of t from the given information. tan(t) =1/9 terminal point of t is in Quadrant III sin(t)= cos(t)= csc(t)= sec(t)= cot(t)=

5. ## math

you are standing 15 feet from a statue the angle of the elevation from eye level to the top of the statue is 27 degrees, and the angle of depression to the base of the statue is 18 degrees. How tall is the statue? show work

6. ## Geometry

parallelogram ABCD: Angle BAC = 35 and angle BCA = 20 How can I find the measure of angle BAD and the measure of angle ABC?

7. ## Physics

A lunar lander in powered descent at 100 m above the surface of the moon slows down from a velocity of 20 m/s to 0.5 m/s at constant acceleration. Assume that the lander has a mass of 20,000 kg and that burning the fuel does not change the mass. Answer the

8. ## algebra

i need help writing this out.. You have a credit card with a balance of \$754.43 at a 13.6% APR. You have \$300.00 available each month to save or pay down your debts. a. How many months will it take to pay off the credit card if you only put half of the

9. ## physics

A horizontal 810-N merry-go-round of radius 1.70 m is started from rest by a constant horizontal force of 55 N applied tangentially to the merry-go-round. Find the kinetic energy of the merry-go-round after 2.0 s. (Assume it is a solid cylinder.)

10. ## Physics

Oxygen for hospital patients is kept in special tanks, where the oxygen has a pressure of 62.0 atmospheres and a temperature of 293 K. The tanks are stored in a separate room, and the oxygen is pumped to the patient's room, where it is administered at a

11. ## Chemistry

Suppose water contained some harmful volatile substance. How could you easily remove the volatile substance in a laboratory?

12. ## Algebra

An 80 x 120 foot rectangular garden is surrounded by a strip of equal width that has the same area as the garden. What is the width of the strip?

13. ## Physics

Two people are standing on a 2.2-m-long platform, one at each end. The platform floats parallel to the ground on a cushion of air, like a hovercraft. One person throws a 6.1-kg ball to the other, who catches it. The ball travels nearly horizontally.

14. ## Chemistry

For a particular isomer of C8H18, the following reaction produces 5099.5 kJ of heat per mole of C8H18(g) consumed, under standard conditions. What is the standard enthalpy of formation of this isomer of C8H18(g)?

15. ## Physics

Two point sources emit sound waves of 1 m wavelength. The sources are pointed at each other. The sources, 2 m apart, emit waves which are in phase with each other at the instant of emission. a) Where, along the line between the sources are the waves out of

16. ## Algebra

Joe and Jodi go canoeing. They paddle upstream 12 miles. On the return strip (with the current) they average 3MPH faster. The total trip takes 8 hours. 1. Find their speed going upstream 2. Find the amount of time it took them to rerun to their starting

17. ## Physics

In a diesel engine, the piston compresses air at 305 K to a volume that is 0.0624 of the original volume and a pressure that is 48.5 times the original pressure. What is the temperature of the air after the compression?

18. ## Ap Chemistry

explain the difference in boiling points of acetone and 1 proponol. (proponol higher) also explain the difference in water solubility of chloroethane and acetone. (acetone is soluble but not chloroethane)

19. ## math

a sticker cost 15 cents and a packet of 8 similar stickers cost 1 dollar clement buy 37 stickers what is the least amount of money that clement of money that clement spend on the stickers

20. ## Chem

What is the concentration of a solution made by diluting 85 mL of 6.0 mg/L free chlorine to a final volume of 750 mL?

21. ## Gen Chem

Light of wavelength 272 nm shines on a piece of magnesium metal. What is the speed of the ejected electron? (Light energy greater than that of the work function of magnesium ends up as kinetic energy of the ejected electron. The work function is the

22. ## Physics

An equilateral triangle has sides of 0.17 m. Charges of -9.0, +8.0, and +2.2 µC are located at the corners of the triangle. Find the magnitude of the net electrostatic force exerted on the 2.2-µC charge.

23. ## Physics

A hydraulic hoist has a ram of 30 cm diameter and a plunger of 1 cm diameter. If 70 N effort is applied to the plunger and the efficiency is 80%, find the maximum load it can raise.

24. ## Math

This task is about choosing a new washing machine. Your washing machine is broken. You need a new one. The new washing machine must hold at least as much as the old one and spin at least as fast as the old one. You used your old washing machine three times

25. ## Stats

A testing service has 1000 raw scores. It wants to transform the distribution so that the mean =10 and the standard deviation = 1. To do so ?

26. ## Math

Hey! So, I've been working on this problem for awhile but I'm currently a bit dumbfounded on how to solve it. I think this question has been answered before but I still don't quite understand how it works or how to explain it. The problem is as follows:

27. ## chemistry

Calculate the pH of a 195 mL solution containing 7.50g of ethylamine (CH3CH2NH2) and 7.50g of ethylammonium bromide (CH3CH2NH3+ Br-). The Kb of ethylamine is 4.7 x 10-4

28. ## chemistry

how many grams of magnesium are required to react with 2.0 moles of hydrochloric acid?

29. ## Geometry

rectangle FGHK The length of FH is 9 cm. What is the length of GK? C is the center of the rectangle 4 is the height 4.5 measure from F to C 4.5 from H to C

30. ## Math (Trig)

A triangle ABC has a trisected angle A. The angle trisectors divide side a (opposite angle A) into three segments which are BD, DE, and DC. The lengths are 2, 3, and 6, respectively. What are the lengths of the other sides?

31. ## physics

two cars weighing 1500 kg are made to collide with a wall.the initial and final velocities are 15 m/s and 2.6 m/s.if the collision last for 0.15 seconds,then find impulsive force exerted on the car

32. ## english

Hi, I Proofread for wording errors and grammar, but I need help to see if my grammar is proper now. I personally respect every religion, and I love reading holy books. Holy books inspire many people. Holy books taught me many morals and stories on our

33. ## statistics

Find a z value to the right of the mean so that 74.5% of the distribution lies to the left of it.

34. ## Economics

If the income elasticity of demand is 3/4 and the interest elasticity of demand is -1/4, by what percent does money demand rise if income rises 10% and the nominal interest rises from 4% to 5%. Thanks!

35. ## Math

Rupert flew 3/16 of the way around the world but George flew 4/9 as far as Rupert. How far around the world did George Fly?

36. ## math

laura has a roll of ribbon there are 29 yards of ribbon on the roll what equation can laura use to find the number of inches of ribbon on the roll

37. ## english

Is my sentence punctuated correctly? Even though it is almost summer, we still have overcast skies and light rain.

38. ## chemistry

A sample of magnesium (13 g) when heated in air produces 22 g of product. What percent (by weight) of magnesium is present in the product? Answer in units of %.

39. ## algebra

One adult ticket and seven children's tickets cost \$62. Two adult tickets and eight children's tickets cost \$79. How much does one adult ticket cost? How much does one children's ticket cost?

40. ## chemistry

An unknown sample with a molecular mass of 180.0g is analyzed to yield 40% C, 6.7% H, and 53.3% O. What is the empirical formula and the molecular formula of this compound?

How do you factorise?

42. ## Physics

A small plastic ball of mass 6.30 10-3 kg and charge +0.150 µC is suspended from an insulating thread and hangs between the plates of a capacitor (see the drawing). The ball is in equilibrium, with the thread making an angle of 30.0° with respect to the

43. ## Chem

i don't get this ?.......If the weather forecast stated that the pressure is 104.2kpa. then what is the pressure in the atmosphere? and what would a barometer measure in mm of mercury need help please

44. ## Maths B

The running costs of a particular factory consist of two components – a constant charge per week for rent of premises and a variable cost for labour which depends on the number of staff working in the factory in that particular week. The total weekly

45. ## Algebra II

((x-1)/3x+15))-((x+3)/(5x+25)) HOW TO SIMPLIFY THAT???

Where can I find detailed info on all the lawsuits that Microsoft have encountered?

47. ## English

To indicate a thought (For example: I'm hungry), do you put quotation marks around the thought as you would do if the thought were spoken out loud, or do you put the thought in italics?

48. ## HUMANITIES

WHY DO WE USE THE TERM CLASSICAL TO THE ANCIENT GREEK AND ROMAN CIVILIZATIONS?

49. ## Biology

Have to make a model of a cell with all its parts listed. Anyone have an ideal on what to make it out of?

50. ## Math

what are the coordinates of the center and the measure of the radius for a circle whose equation is ( x - 8)^2 + (y + 4)^2 = 12

51. ## Physics 2017

I have a coil of copper wire. I want to know the length of the wire in the coil. I do not wish to unwind the coil and measure the length directly. I find from a table of densities that the density of copper is 8.89x10^3kg/m^3. Explain how I could find the

52. ## math

Write the inequality that represents the solution set for −15/9 y

53. ## math

So far this year Nick has scored a 75, 81, 88 and 92 on four of his math tests. Each test is worth a maximum of 100 points. To earn a B this year, Nick needs a test average of 80 or better. Write the inequality that represents this scenario. Let t equal

55. ## computer science

What does it mean when there is a high prior probability in terms of Baynesian statistics?

56. ## Math

when testing for a fever, what is the true positive rate for a thermometer that always reads 105 F? What is the false positive rate? **Note: the definition of fever is that the patients temperature exceeds 100 F**

57. ## Computer Science

when testing for a fever, what is the true positive rate for a thermometer that always reads 105 F? What is the false positive rate? **Note: the definition of fever is that the patients temperature exceeds 100 F**

The sum of two consecutive numbers is 37. What are they?

59. ## PHYICAL

What is equivalent between points a and b when R=3 R R ----\/\/\//---\/\/\/\/----| | | | | | | a | | R | b ----| --/\/\/\/\--------- | | | R | |----------\/\/\/\/-------|

60. ## algebra

8^(x+5)=32^(x-9)

61. ## Algebra II

((x-1)/3x+15))-((x+3)/(5x+25)) HOW TO SIMPLIFY THAT???

62. ## algebra

for the equation y=1/4(x+5)^2-2, what is the vertex

63. ## Science

what is the definition of nutrient?

64. ## ecology

I have a Data Analysis Lab that has a graph attached to it. It talks about how temperature affects the growth rates of the two species'. It says that researchers studied the effect and they hypothesized that increasing temperature would increase the growth

65. ## PHYICAL

What is equivalent between points a and b when R=3 R R ----\/\/\/----\/\/\/---- a /\/\/\-----b \/\/\/\/-----

5|2x-5|=15

67. ## maths

These questions concern the integers 84, 126, 168 and 294. 1)Choose the option that is the lowest common multiple of the four integers. 2)Choose the option that is the highest common factor of the four integers. Options for them: A) 28 B) 42 C) 63 D) 294

68. ## Algebra II

((x-1)/3x+15))-((x+3)/(5x+25)) HOW TO SIMPLIFY THAT???

1. ## Math

posted on November 24, 2019
2. ## hayley

That could be the case. However, I do not think calling Hayley out on it for everyone to see was a smart move. This should be a 1 on 1 kind of talk.

posted on November 8, 2019
3. ## Social Studdies, Ms. Sue please check!

bruh nah

posted on October 28, 2019
4. ## social studies

a

posted on October 26, 2019
5. ## Government

its all a now a a a a

posted on October 21, 2019
6. ## MATH

Larry ya is not right for connexus! I used the answers and got one out of four 😞

posted on October 17, 2019
7. ## social studies

It's your boy and Hal are right got 100% Thx guys!

posted on October 15, 2019
8. ## Science!

@ I don't even know why I'm alive thx so much 16/16 for connexus people!

posted on October 15, 2019
9. ## Science

Answers for connexus students are: 1.) A 2.) B,C,D 3.) A 4.) B & E 5.) A,D,E Got 100% promise good luck!

posted on October 15, 2019
10. ## Language Arts

You Guys Are Funny

posted on October 14, 2019
11. ## physics

third

posted on March 7, 2019
12. ## Math

Z

posted on January 30, 2019
13. ## English

This thread gave me a good laugh. 😂

posted on November 7, 2018
14. ## algebra

1

posted on July 28, 2018
15. ## Geometry

Is the area incorrect?

posted on April 1, 2018
16. ## Geometry

So the length of GK would also be 9?

posted on April 1, 2018
17. ## Geometry

I think the area is: 8.24621

posted on April 1, 2018
18. ## S.S

C D B 100%

posted on March 7, 2018
19. ## Probability and Statisics

qhat

posted on February 23, 2018
20. ## Math

Right

posted on December 1, 2017

Thank

posted on December 1, 2017
22. ## Language Arts 8A

SHAWN MENDES is BAE IS CORRECT!!SHAWN MENDES is BAE IS CORRECT!!SHAWN MENDES is BAE IS CORRECT!!SHAWN MENDES is BAE IS CORRECT!!SHAWN MENDES is BAE IS CORRECT!!SHAWN MENDES is BAE IS CORRECT!!SHAWN MENDES is BAE IS CORRECT!!SHAWN MENDES is BAE IS

posted on November 27, 2017
23. ## SCIENE ASAP

Gravity- Earths core will pull it's self towards it's self.

posted on November 26, 2017
24. ## Social Studies

posted on September 26, 2017
25. ## geometry

1149

posted on September 6, 2017
26. ## ENGLISH

Consider this quote: "In each of these historical instances . . . mistrust led to misunderstanding, which led to armed conflict." The ellipsis in this quote is appropriate if        A. the meaning and spirit of the quote is retained.   B. it

posted on July 31, 2017
27. ## Statistics

0.6692

posted on April 16, 2017

It depends on the object, but generally the bottom

posted on March 9, 2017
29. ## math

thanks!

posted on February 20, 2017
30. ## math

thank you!

posted on February 20, 2017
31. ## math

ok i think i wrote it wrong the y is a seperate variable its not suppose to be with the 9

posted on February 19, 2017
32. ## math

i put that in and it said it was wrong

posted on February 19, 2017