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Y0gi
Questions (13)
When four people with a combined mass of 320 kg sit down in a car, they find that the car drops 0.80 cm lower on its springs.
3 answers
4,348 views
25) A 75-g ice cube at 0 C is placed in 825g of water at 25 C. a) What is the final temperature of the mixture? b) If the final
2 answers
1,856 views
60) A class of 10 students taking an exam has a power output per student of about 200W. Assume the initial temperature of the
2 answers
1,572 views
A glass windowpane in a home is 0.62 cm thick and has dimensions 1.0 m x 2.0 m. On a certain day, the indoor temperature is 25 C
2 answers
1,597 views
25) A 75-g ice cube at 0 C is placed in 825g of water at 25 C. a) What is the final temperature of the mixture? b) If the final
3 answers
1,572 views
19) A 100-g aluminum calorimeter contains 250g of water. The two substances are in thermal equilibrium at 10 C. Two metallic
6 answers
1,285 views
55) A 200-g block of copper at a temperature of 90 C is dropped into 400g of water at 27 C. The water is contained in a 300-g
2 answers
1,248 views
A weather ballon is designed to expand to a maximum radius of 20 m at its working altitude, where the air pressure is 0.030 atm
3 answers
3,346 views
A weather ballon is designed to expand to a maximum radius of 20 m at its working altitude, where the air pressure is 0.030 atm
0 answers
642 views
Give the real solution set for each of the following:
42) log(6)(x^2+11) + log(6)x = 1 + log (6)(x^2+1)
1 answer
1,027 views
Write each of the following as a single logarithm (log (x+3))/(3) = 1
1 answer
463 views
Write each of the following as a single logarithm:
8) ((5-log x)/4) + 4log y =
0 answers
969 views
Give the rational number that is the exact value for each of the following:
14) Log(9)((∛(3)/(�ã(27))=
0 answers
416 views
Answers (22)
I did as you said. The only thing I did not see you add to the equation though is the initial temperature of the room. I don't know if I did it right because after your instructions I just added that 20 C to the final answer and it gave me 44.5! I don't
How do you find the final temperature of the mixture though?
Yes that is what I meant. Thank you, I figured it out.
so it's just Heat(cold)=Heat(hot)?
Calculating Final temperature. I was absent one day from class and didn't get the notes. So I am confused and this Hw is due in less than an hour!
Yes I know but I am confused on how to separate T(final) out of the equation. I can arrange it fine but don't know how to solve for T(Final)
Oh ok sweetness! Thanks. Figured out the answer. That makes sence. The only thing I had seen wrong with the equation you put is that you would need to find the volume, which is (4/3)ðr^3 not jut r^3. But still helped out so thanks =)
X/Y -2/12 -1/7 0/2 1/-3 2/8
First you need to distribute. Then you will have 12a + 14 = 38 Then u subtract 14 from both sides. 12a = 24. Then divide both sides by 12. a = 2
Yea what mayah said. If you are combining "like terms"
Yes that is correct!
Or you could just do the Algebra. A=lw would be A=(cm)(cm) = cm^2 or A=(m)(m) = m^2 if you had the dimensions be 2 times the first one it would be 4 times as big, since it was squared. 3 would be 9 times, 4 would be 16 times, and so on.
let's take a rectangle for example. It has a width of 2 and a lengh of 3. You just take A=lw so the are is (2)(3)= 6 The one that is three times the other is 2(3) and 3(3) or 6 x 9 = 45. It is 9 times bigger. 45/6 = 9
What are you solving for? Are you solving for (y) or (x) or are you just combining "like" terms?
Meant you need to convert the percent into a decimal =P Lol
If you want 28% of 48 you just take the percentage and multiply by the number you want. The percantage is 28% but you need to convert it to a fraction. 28/100 = .28 So then you multiply (.28)(48) = 13.44 So 28% of 48 = 13.44 =)
yes that is correct. 1 m = 100cm so A = 100 cm x 100 xm A = 10000 cm^2 Good job!
Does the question ask for it to be in cm or m? If it is supposed to be in cm then the answer is A = 50 cm x 20 cm if it is supposed to be in m then the answer is A = .5m x .2m
I meant give the real solution set for the problem above
Does it have to be 3 different numbers or the same one? The number 8 fits into all 3 equations. If not then you can do the math. Take the first equation which is 5 + x < 15 subtract 5 from both sides. Then the equation is x < 10 so you could take any
Yes it would make it true. It is saying 19 - 8 is less than 12. So then you can simply do the math, and you come out with 11 is less than 12. Which is a true statement. 19 - 8 < 12 11 < 12
If the line is going to be horizontal then it must cross the y - axis. To find out where it crosses, you have to look at the y-coordinate of the point (2,4). The y-coordinate is 4 so your equation for the horizontal line would be y = 4
