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Volume/633763: find the volume of a sphere 16ft in diameter use 3.14 as pie and round your answer to the nearest tenth
1 solutions
Answer 399110 by Alan3354(30993)   on 2012-08-01 11:08:20 (Show Source):
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Quadratic_Equations/633640: I need help with a few problems that I have been working on but I can't seem to get exactly what it is I need, which is understanding how to work these problems and show my work. Please and thank you for any help you can offerme at this time.
Problem # 1: In this problem it asks to find the vertex, the line symmetry, and the maximum or minimum value of f(x). Graph the function. f(x)=1/3(x+6)^2+4.
Problem # 2: Find the variation constant and equation of variation where y varies directly as x and y=12 when x=2.
Problem #3: Rationalize the denominator. Assume that all expressions under radicals represent positive numbers. sq rt u-sq rt /sq rt u+sq rt v
Problem #4: Convert to decimal notation. 8.91*10^7
Problem #5: In a right triangle, find the length of the side not given. b=1, c=sq rt 10. The third length of the third side is?
1 solutions
Answer 399043 by Alan3354(30993) on 2012-07-31 23:22:38 (Show Source):
You can put this solution on YOUR website!Problem # 1: In this problem it asks to find the vertex, the line symmetry, and the maximum or minimum value of f(x). Graph the function. f(x)=1/3(x+6)^2+4.
This is in standard form, y = a(x-h)^2 + k, where (h,k) is the vertex, and x = h is the LOS.
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The minimum is at the vertex, (h,k) = (-6,4).
==================================================
Problem # 2: Find the variation constant and equation of variation where y varies directly as x and y=12 when x=2.
y = kx
12 = 2k
k = 6
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Problem #3: Rationalize the denominator. Assume that all expressions under radicals represent positive numbers. sq rt u-sq rt /sq rt u+sq rt v
Multiply NUM and DEN by the conjugate of the DEN, 
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The NUM has a missing term, probably is sqrt(v)
--> 
You can expand the NUM, or not.
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Problem #4: Convert to decimal notation. 8.91*10^7
Move the DP 7 places to the right, adding zeroes as needed.
= 89100000
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Problem #5: In a right triangle, find the length of the side not given. b=1, c=sq rt 10. The third length of the third side is?
If c is the hypotenuse, then
a = 3
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Signed-numbers/633623: I haven't been in school for over 30 years. I am studying the compass test but find that I am having some difficulty remembering algebra. for example : which of the following is a factor of x^2 -5x -6. I'm not clear on the x. What do you do to find what x is? Thanks. If i can get an understanding of that it might help me.
1 solutions
Answer 399026 by Alan3354(30993) on 2012-07-31 22:01:49 (Show Source):
You can put this solution on YOUR website!which of the following is a factor of x^2 -5x -6. I'm not clear on the x. What do you do to find what x is?
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x^2 -5x -6
Look for two factors of 6. It's either 1*6 or 2*3, those two possibilities.
The signs are different, since it's -6.
And, the difference is 5, since it's 5x.
---
Only 1 & 6 differ by 5.
--> (x + 1)*(x - 6)
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That's all there is to do. You can't solve for x, it's not an equation.
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Triangles/633502: Tom drops a rock off the edge of a 324 foot cliff. The height of the rock after t seconds is given by h = -16t2 + 324. How long until the rock hits the ground below? Round your answer to the nearest tenth of a second.
1 solutions
Answer 398975 by Alan3354(30993) on 2012-07-31 16:58:06 (Show Source):
You can put this solution on YOUR website!Tom drops a rock off the edge of a 324 foot cliff. The height of the rock after t seconds is given by h = -16t2 + 324. How long until the rock hits the ground below? Round your answer to the nearest tenth of a second.
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At impact, h = 0
Solve for t, ignore the negative solution.
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Age_Word_Problems/633428: i am a 4 digit number if i will get reversed i will become a 3 digit number.what is the answer?
1 solutions
Answer 398901 by Alan3354(30993) on 2012-07-31 10:34:22 (Show Source):
You can put this solution on YOUR website!i am a 4 digit number if i will get reversed i will become a 3 digit number.what is the answer?
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Any 4 digit number with a units digit = 0 and the 10s digit not = 0.
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Travel_Word_Problems/633439: If I drove for 1.5 hours at an average speed of 62 mph and then drove another half hour at an average speed of 24mph. How far did I drive?
1 solutions
Answer 398899 by Alan3354(30993) on 2012-07-31 10:32:31 (Show Source):
You can put this solution on YOUR website!If I drove for 1.5 hours at an average speed of 62 mph and then drove another half hour at an average speed of 24mph. How far did I drive?
================
d = r*t
d = 1.5*62 + 0.5*24 miles
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Travel_Word_Problems/633423: Ratio of angular speed of moon around the earth to the speed of moon around its own axis is ?
a. 1:2
b. 2:1
c. 5:1
d. 1:1
1 solutions
Answer 398876 by Alan3354(30993) on 2012-07-31 09:08:20 (Show Source):
You can put this solution on YOUR website!Ratio of angular speed of moon around the earth to the speed of moon around its own axis is ?
a. 1:2
b. 2:1
c. 5:1
d. 1:1
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d
We always see the same side of the moon.
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Quadratic_Equations/633337: Please shed some light on finding the solution.
If Emily hits a golf ball from the upper deck of a driving range (twelve feet above the ground) with an initial velocitynof 117 feet per second, after how many seconds should the ball land (assume her ball does not encounter any obstacles)? Round to the nearest tenth.
1 solutions
Answer 398834 by Alan3354(30993) on 2012-07-30 22:26:08 (Show Source):
You can put this solution on YOUR website!If Emily hits a golf ball from the upper deck of a driving range (twelve feet above the ground) with an initial velocitynof 117 feet per second, after how many seconds should the ball land (assume her ball does not encounter any obstacles)? Round to the nearest tenth.
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If it's path is horizontal, it's the time it takes it to fall 12 feet.
h(t) = -16t^2 + 12 = 0
t^2 = 3/4
t = sqrt(3)/2 seconds
t =~ 0.866 seconds
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If it's some other angle, the angle has to be given.
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Graphs/633329: Can you please help me out on question 442728? I really appreciate your help, email on galuvaa72@yahoo.com. Thank you
1 solutions
Answer 398812 by Alan3354(30993) on 2012-07-30 20:21:39 (Show Source):
You can put this solution on YOUR website!Can you please help me out on question 442728? I really appreciate your help, email on galuvaa72@yahoo.com. Thank you
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That question is not accessible.
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Sequences-and-series/633283: I need help figuring out how to solve this.
It is an infinite series, 1+3+9+27+81+243+...= -1/2
I need to prove that this infinite series equals -1/2.
1 solutions
Answer 398780 by Alan3354(30993) on 2012-07-30 17:34:45 (Show Source):
You can put this solution on YOUR website!I need help figuring out how to solve this.
It is an infinite series, 1+3+9+27+81+243+...= -1/2
I need to prove that this infinite series equals -1/2.
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It obviously does not = -1/2.
Why would it be negative?
The 1st term is > -1/2
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Travel_Word_Problems/633110: if car a and car b left at the same time with car a at the speed of 160kph and car b at 186kph, how long will i wait for?
1 solutions
Answer 398669 by Alan3354(30993) on 2012-07-30 09:16:39 (Show Source):
You can put this solution on YOUR website!if car a and car b left at the same time with car a at the speed of 160kph and car b at 186kph, how long will i wait for?
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What are you waiting for?
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