Y0gi

Write each of the following as a single logarithm (log (x+3))/(3) = 1

14 years ago

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)

14 years ago

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 glass container. What is the final temperature of the mixture?

14 years ago

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 temperature is 0 C, then how much ice remains? c) change the ice's mass to 300g, and repeat the problem

14 years ago

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 and the outdoor temperature is 0 C. a) What is the rate at which energy is transferred by heat through the glass? b) How much...

14 years ago

60) A class of 10 students taking an exam has a power output per student of about 200W. Assume the initial temperature of the room is 20 C and that its dimensions are 6.0 m by 15.0 m by 3.0 m. What is the temperature of the room at the end of 1.0 h if all...

14 years ago

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 =)

14 years ago

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

14 years ago

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

14 years ago

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 numb...

14 years ago

I meant give the real solution set for the problem above

14 years ago

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

14 years ago

yes that is correct. 1 m = 100cm so A = 100 cm x 100 xm A = 10000 cm^2 Good job!

14 years ago

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 =)

14 years ago

Meant you need to convert the percent into a decimal =P Lol

14 years ago

What are you solving for? Are you solving for (y) or (x) or are you just combining "like" terms?

14 years ago

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

14 years ago

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.

14 years ago

Yes that is correct!

14 years ago

Yea what mayah said. If you are combining "like terms"

14 years ago

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

14 years ago

X/Y -2/12 -1/7 0/2 1/-3 2/8

14 years ago

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)

14 years ago

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!

14 years ago

so it's just Heat(cold)=Heat(hot)?

14 years ago

Yes that is what I meant. Thank you, I figured it out.

14 years ago

How do you find the final temperature of the mixture though?

14 years ago

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 k...

14 years ago