Jena

This page lists questions and answers that were posted by visitors named Jena.

Questions

The following questions were asked by visitors named Jena.

In the process of changing a flat tire, a motorist uses a hydraulic jack. She begins by applying a force of 49 N to the input piston, which has a radius r1. As a result, the output plunger, which has a radius r2, applies a force to the car. The ratio r2/r...

During an all-night cram session, a student heats up a 0.451 liter (0.451 x 10- 3 m3) glass (Pyrex) beaker of cold coffee. Initially, the temperature is 19.5 °C, and the beaker is filled to the brim. A short time later when the student returns, the temper...

the pressure is one atmosphere and determine the heat in joules required to produce 5.03 kg of water vapor at 100.0 °C, starting with (a) 5.03 kg of water at 100.0 °C and (b) 5.03 kg of liquid water at 0.0 °C. for part (a) I used the equation Q=mL and L w...

Tsunamis are fast-moving waves often generated by underwater earthquakes. In the deep ocean their amplitude is barely noticable, but upon reaching shore, they can rise up to the astonishing height of a six-story building. One tsunami, generated off the Al...

This time I have two questions: #1.A recording engineer works in a soundproofed room that is 49.7 dB quieter than the outside. If the sound intensity in the room is 2.66 x 10-10 W/m2, what is the intensity outside? #2.A listener increases his distance fro...

A hot-air balloon is rising upward with a constant speed of 2.21 m/s. When the balloon is 2.25 m above the ground, the balloonist accidentally drops a compass over the side of the balloon. How much time elapses before the compass hits the ground?

I have to write an English essay about "The Crucible." Has anyone read the book, and understood it? I just need someone to help me brainstorm ideas to write about. Thanks!

what is the title of this picture?

Are my calculations correct of i came up with 50.71g of CaH2 to the question, "How many grams of are needed to generate 54.5 of gas if the pressure of is 815 at 22?"

here is the question: A sapphire gemstone contains 52.7% aluminum, 47.% oxygen, and traces of titanium. If the saoohire was found to contain 0.155g of oxygen, what is the mass of the gemstone? i think this is a precent unit factor but i don't know how to...

I am trying to figure out how many minutes are required for sunlight to travel from the Sun to Earth? Assuming the sun is 93,000,000 miles from Earth and that sunlight travels at 1.86x10 to the 5th power miles per second. These things are so tricky, i kno...

I am in need of help about this specific heat question. A 100.0g sample of aluminum released 1680 calories when cooled from 100.0 degrees C ti 20.0 degrees C. What is the specific heat of the metal? I tried setting it up: 1680 cal ________________________...

Solve the following inequality. (x-4/-x+2)>0 Write your answer using interval notation.

Solve the following inequality. (x-4)/(-x+2)>0 Write your answer using interval notation

Find the domain of the function. f(x)=(sqrt x+6)/(-2x-5) Write your answer as an interval or union of intervals.

Homework Help Forum: Algebra Posted by Jena on Thursday, February 3, 2011 at 7:32pm. Find the domain of the function. f(x)=(sqrt x+6)/(-2x-5) Write your answer as an interval or union of intervals. Algebra - David, Thursday, February 3, 2011 at 7:42pm (-6...

Compute log7^6 . Round your answer to 3 decimal places.

For each equation, determine whether its graph is symmetric with respect to the -axis, the -axis, and the origin. 4y^4+24x^2=28 and y=1/x^2+5 Check all symmetries that apply x-axis,y-axis,origin or non of the above.

Find the equation of the line. find equation of form y=ax+b, where a is slope, and b is intercept, which passes through points (x1, y1) = (-8, -6) and (x2, y2) = (0, 0) slope 0-(-6)/0-(-8)= 3/4 how would I write it? y=3/4x or y=3/4x+0 ?

g(x)=-5+sqrt(x-1) g(4)=-5+sqrt(4-1) is the answer -5+sqrt3

h(x)=(2-2x^2)/-2 h(-2) I get (-2-2(-2)^2)/-2 (-2-2(4)/-2 6/-2=-3 h(-2)=-3

Sung rented a truck for one day. There was a base fee of $17.99, and there was an additional charge of .90 cents for each mile driven. Sung had to pay $253.79 when he returned the truck. For how many miles did he drive the truck? $253.79=$17.99+.90 -$17.9...

(-3)/(5)y=-15 Does y=25

If you are given 46 grams of magnesium how many grams of hyfrogen will be produced?

What are FIVE tools that we use to help us extend our senses when making quantitative observations?

What are intersections and unions (in algebra). Also, what are complements? And what does MATH stand for in terms of sets? Please answer quickly. Thanks!

Find integer bounds for the roots of the following equation: 3x^5-11x^4-2x^3=38x^2-21x-15

Whats: -3 < j + 2 < 7

What is the domain and range of the equation y=-x^2-4x-7?

For the reaction HCl + AgNO3 → ,write the balanced formula equation

a student used a 0.358 g sample of Alka-Seltzer and the mass of CO2 was found to be 0.102 g. Based on this result, answer the following questions: Determine the mass of NaHCO3 that produced the CO2 in the experiment. Determine the % mass of NaHCO3 in the...

Performing the same experiment described on your lab manual, a student used a 0.358 g sample of Alka-Seltzer and the mass of CO2 was found to be 0.102 g. Based on this result, answer the following questions: Determine the mass of NaHCO3 that produced the...

Convert 29.8 atm into torr I did this 29.8(1/760) and got 22648 but its not going online as correct

The total mass of three identical boxes is 28.05 kilograms. What is the mass, in kilograms, of each box?

The sum of the first n odd number is n^2. The sum of the first 30 odd numbers is A. 60 B. 90 C. 300 D. 900 Thank you for the help in advance =)

Consider the following reaction. SO3(g) + H2O(l) → H2SO4(aq) A chemist allows 60.9 g of SO3 and 11.1 g of H2O to react. When the reaction is finished, the chemist collects 54.4 g of H2SO4. Determine the limiting reactant, theoretical yield, and percent yi...

summarize the reproductive cycle of pines

Sa el filibusterismo Sino ang tauhang itinakwil ang pagka pilipino at may magaspang na ugali?

Answers

The following answers were posted by visitors named Jena.

thank you so very much for your help!

trying to google concept maps....try images if that help! best of luck!

thank you Dr. Bob!!! :)

A Regular Octagon with apothem of 9ft

How to find the mass of Oxygen that displaces water from the in the decomposition reaction of potassium chlorate using manganese 4 oxide as a catalyst. Am I to use stoichiometry or the combined gas law equation P1V1/T1=P2V2/T2

I get (-inf,-5/2)U[-6,infin) but it doesn't look right

Sorry y=1/(x^2+5)

I get that the second equation x-axis. Is that right?

I don't get a value for b, What am I missing?

I see what I did, I put a neg in front when it should have been and carried it through. Thanks

Ok thank you. At first I was confused, but then I realized that I was mixing up quantitative and qualitative. It makes sense now. Thanks!

No I think it would be (9, 14).

Oh yes sorry I got confused...don't listen to me...

A = B*2^-ht B = initial Amount t = time h = half-life Is that the whole question?? Becuase that really doesn't make sense. If you give me the whole question I can give you can answer.

How?? What are the equations?

reaction between NaHCO3 and HCl

I did the equation of the % mass but its wrong

HCl is added to NaHC03 .

Yes its correct, but how about he mass of NaHCO3 in the tablet assuming the mass of the tablet is 3.50 g

How much energy is released when 1.9 kg of diethyl ether freezes? In kj

Im from Connexus XD

@MusicLover14, your answer is WRONG. I did that on my test and I got it wrong, it is nonpoint.

Yes. the answer is nuclear.

Guys, don't listen to those answers, the correct answer is A. I did D and it said the correct answer is A.

So the correct answer is national park planning?

Why would it be B?

Who from here is from connections academy nevada?

Guys, do not listen to bobpursley's answer because it is wrong, i got it wrong on my test, the correct answer is B!!

>:O All of those that 'Hi' said, are all WRONG ;O; Here are the correct answers that it says is correct: 1. D 2. C 3. A 4. B 5. C

Math help is a great website

I didn't understand...please help

I DON'T KNOW ASK UR MOM

Claire buys a jacket that originally cost $76. The price is marked down 25% for a sale, and Claire has a coupon to further reduce the marked down price by 10%. How much does Claire pay for the jacket?

its also 7th grade ss and probably all of connexus

thanks igotchufam

Im from connexus

This was really helpful for my nice. Thank you!