Does anyone know how to do number 9?
For number 9 you are given the formula and a volume, and told to find the radius based on the equation. To start, you want to plug in the given volume for V (volume) in the equation. Disregard the in.³, as that is merely the unit. Thus you will have 12 = 4/3πr³ Next you simplify the equation until you have r³ = 9/π. next take the 3rd root of both sides, and round your answer to the nearest hundredth as specified in the problem
I hope this comes of use,
Stephanie! For number 9 I plugged in 12 for V when using the equation given, and that gave me 12=4/3 pi r^3. From there, I divided 12 by 3/4 and that gave me the equation 16= pi r^3. From here, I divided 12 by pi which gave me 5.092058179=r^3, and then took the cube root of that answer, and ended up getting a final answer of 1.72in^3=radius. Hope this helps!
For problems 22-24, what are the rules for multiplying the exponents?
For 22-24 the exponents, because they are fractions, can also be roots. Like for 22, the exponent of 1/2 is a square root. So if you make 15^1/2 into the square root of 15 you can then multiply both square roots. I hope that helps.
for number 22 I multiplied 15 by 15 to get 225. Remember that when the exponent is 1/2 it is actually looking for the square root. With that in mind I took the square root of 225 and ended with my answer at 15. For 23 I did the same thing but 1/3 means the cubed root. Finally for 24 I remembered that the cubed root of 8 is 2. Then I had 2^2 which is 4:)
Hope this helped!:)
Hello all, #28 through #32 on Chapter 7 is confusing me. Mostly the 2/3 exponent. Any help would be appreciated.
Please go to the appropriate blog and write your question. Respond to your classmates by putting their name first then write your response. Example:Trevor:#5 on chapter 6 I started with....Hope this helps-Sarah