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Triangles/672377: how many us gallons are there in an olympic size swimming pool 1ftsqauared=7.481gallons

1 solutions

Answer 417960 by Alan3354(30993) About Me  on 2012-10-26 16:17:59 (Show Source):
You can put this solution on YOUR website!
how many us gallons are there in an olympic size swimming pool 1ftsqauared=7.481gallons
---------------
Not enough info.
What are the dimensions of the pool?
-----------
PS 1 sq ft is area, not volume


Rational-functions/672382: 16t^2+40T-96
1 solutions

Answer 417959 by Alan3354(30993) About Me  on 2012-10-26 16:16:49 (Show Source):
You can put this solution on YOUR website!
16t^2+40T-96
---------------
Do you have a question?


Pythagorean-theorem/672354: A quarter (25 cent piece) is 3/4 inch in diameter and when placed 7 feet from the eye will just block out the disc of the moon. If the diameter of the moon is 2160 miles, how far is the moon from Earth?
How would I go about on solving this one?
1 solutions

Answer 417951 by Alan3354(30993) About Me  on 2012-10-26 15:47:25 (Show Source):
You can put this solution on YOUR website!
A quarter (25 cent piece) is 3/4 inch in diameter and when placed 7 feet from the eye will just block out the disc of the moon. If the diameter of the moon is 2160 miles, how far is the moon from Earth?
---------------
7 ft = 84 inches
----
0.75/84 = 2160/d d in miles.


Travel_Word_Problems/672362: How long would it take to ride a bike somewhere that takes a car 12 minutes to get there?
1 solutions

Answer 417950 by Alan3354(30993) About Me  on 2012-10-26 15:43:20 (Show Source):
You can put this solution on YOUR website!
How long would it take to ride a bike somewhere that takes a car 12 minutes to get there?
---------------
You have to know the speed of the car and the bike.


Exponential-and-logarithmic-functions/672378: how do I solve lob3^18=x
1 solutions

Answer 417948 by Alan3354(30993) About Me  on 2012-10-26 15:41:38 (Show Source):
You can put this solution on YOUR website!
how do I solve lob3^18=x
----------
What is lob?


Systems-of-equations/672310: Which point is not on a graph of the line 2x-y -1
1) (-3,-5)
2) (-1,-1)
3) (1,3)
4) (2,5)
5) (3,6)
1 solutions

Answer 417920 by Alan3354(30993) About Me  on 2012-10-26 13:30:09 (Show Source):
You can put this solution on YOUR website!
Which point is not on a graph of the line 2x-y -1
---------
That's not a line.


Linear-equations/672334: 3x + 3y= y + 1
x + 3y= 9 − x

solve by using addition...i have solved it and i cannot get perfect answers but my teacher requires one...help

1 solutions

Answer 417919 by Alan3354(30993) About Me  on 2012-10-26 13:28:14 (Show Source):
You can put this solution on YOUR website!
3x + 3y= y + 1 --> 3x + 2y = 1
x + 3y= 9 - x --> 2x + 3y = 9
-----------
3x + 2y = 1 times 2 --> 6x + 4y = 2
2x + 3y = 9 times -3 --> -6x - 9y = -27
------------
6x + 4y = 2
-6x- 9y = -27
-------------- Add
-5y = -25
y = 5
----------
3x + 2y = 1
3x + 10 = 1
x = -3
============
Not sure what a "perfect answer" is.


Quadratic-relations-and-conic-sections/672330: In which direction does the parabola for the quadratic equation y = 2x2 – 6x + 1 open?
1 solutions

Answer 417918 by Alan3354(30993) About Me  on 2012-10-26 13:24:18 (Show Source):
You can put this solution on YOUR website!
In which direction does the parabola for the quadratic equation y = 2x2 – 6x + 1 open?
------------
Upward


Inverses/672308: F(x)=x-10
1 solutions

Answer 417917 by Alan3354(30993) About Me  on 2012-10-26 13:22:27 (Show Source):
You can put this solution on YOUR website!
F(x)=x-10
==========
What's your question?


Rational-functions/672296: I need to find the slop of a line passing through a pair of points
(a,b) and (a,a-c)
All variables represent positive real numbers
The slope is
or
The slope is undefined
Which describes how the line passes through the given points
horizontal
falls from left to right
vertical
rises from left to right
1 solutions

Answer 417911 by Alan3354(30993) About Me  on 2012-10-26 12:36:36 (Show Source):
You can put this solution on YOUR website!
I need to find the slop of a line passing through a pair of points
(a,b) and (a,a-c)
------------
The x value is the same --> parallel to the y-axis
--> slope is undefined
======================
If b = a-c, then there's 1 point --> no slope


Human-and-algebraic-language/672320: what is my mammal?
1 solutions

Answer 417910 by Alan3354(30993) About Me  on 2012-10-26 12:33:51 (Show Source):
You can put this solution on YOUR website!
what is my mammal?
-----------
idk.
Mine's a dog now. We had some cats, too.


Unit_Conversion_Word_Problems/672321: In an electrical circuit, the current passing through a conductor varies inversely with the resistance. Suppose that when the current is 10 (amperes), the resistance is 18 ohms. What is the current when the resistance is 20 ohms?
1 solutions

Answer 417909 by Alan3354(30993) About Me  on 2012-10-26 12:31:36 (Show Source):
You can put this solution on YOUR website!
In an electrical circuit, the current passing through a conductor varies inversely with the resistance. Suppose that when the current is 10 (amperes), the resistance is 18 ohms. What is the current when the resistance is 20 ohms?
-----------------
I = V/R (V = constant)
10 = V/18
V = 180
-----
I = 180/20 = 9 amperes
========================
Or,
10*18 = I*20
I = 9


Exponents-negative-and-fractional/672312: I need help on a fraction properties of exponents question.
I am unsure if the answer is suppose to be negative or positive.
w^12
----
w^18

= w^6 or w^-6
1 solutions

Answer 417904 by Alan3354(30993) About Me  on 2012-10-26 11:57:29 (Show Source):
You can put this solution on YOUR website!
I need help on a fraction properties of exponents question.
I am unsure if the answer is suppose to be negative or positive.
w^12
----
w^18

= w^6 or w^-6
--------------
Subtract exponents when you divide.
= w^(12-18)
= w%5E%28-6%29


Exponents/672275: how can we solve 2to the power 100 without multiply 2*2*2*2*2........100times
1 solutions

Answer 417903 by Alan3354(30993) About Me  on 2012-10-26 11:56:19 (Show Source):
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how can we solve 2to the power 100 without multiply 2*2*2*2*2........100times
-----------------
There's nothing to solve for.
It's 2^100


Travel_Word_Problems/672306: a motorist travels for one hour at an average speed of 72 km/h and then for two hours at an average speed of 90 km/h. Calculate his average speed for the whole journey
1 solutions

Answer 417901 by Alan3354(30993) About Me  on 2012-10-26 11:32:39 (Show Source):
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a motorist travels for one hour at an average speed of 72 km/h and then for two hours at an average speed of 90 km/h. Calculate his average speed for the whole journey
==============
Use d = r*t to get the total distance
Divide by the total time to get the average speed


Linear-equations/672269: find the x intercept and y intercept of the line given by the equation 8x-4y=-14
1 solutions

Answer 417873 by Alan3354(30993) About Me  on 2012-10-26 09:32:23 (Show Source):
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find the x intercept and y intercept of the line given by the equation 8x-4y=-14
----------
At the x-int, y = 0
At the y-int, x = 0


Volume/672173: A rectangular solid cube with each side measuring is 10cm. What is the volume of the cube ?
1 solutions

Answer 417825 by Alan3354(30993) About Me  on 2012-10-25 23:23:38 (Show Source):
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A rectangular solid cube with each side measuring is 10cm. What is the volume of the cube ?
----------------
1000 cc = 1 liter


Distributive-associative-commutative-properties/672068: #6. 2(3x-1)= 4(x+2)
#7. 3(x-5)=210

If you solve both of these, I will be extremely happy and I'll finally be able to rest in peace!! These are really hard for me:(
THANK YOU.
1 solutions

Answer 417800 by Alan3354(30993) About Me  on 2012-10-25 20:45:06 (Show Source):
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#6. 2(3x-1)= 4(x+2)
Divide by 2
3x-1 = 2(x+2) = 4x+4
Subtract 3x
-1 = x+4
Subtract 5
-5 = x
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#7. 3(x-5)=210
Divide by 3
Add 5


Exponents/672083: Whats the value of 2 to the 3 power?
1 solutions

Answer 417798 by Alan3354(30993) About Me  on 2012-10-25 20:42:42 (Show Source):
You can put this solution on YOUR website!
Whats the value of 2 to the 3 power?
------
= 2*2*2


Travel_Word_Problems/672077: How long would it take to drive 60 miles at 100 mph?
1 solutions

Answer 417797 by Alan3354(30993) About Me  on 2012-10-25 20:42:13 (Show Source):
You can put this solution on YOUR website!
How long would it take to drive 60 miles at 100 mph?
-------------
d = r*t
t = d/r


Travel_Word_Problems/672053: how far will a bus go in 90 minutes if it travels 50 miles an hour?
1 solutions

Answer 417790 by Alan3354(30993) About Me  on 2012-10-25 20:13:32 (Show Source):
You can put this solution on YOUR website!
how far will a bus go in 90 minutes if it travels 50 miles an hour?
-------------
90 mins = 1.5 hours
d = r*t


Linear_Equations_And_Systems_Word_Problems/672056: the sum of three consective odd numbers is 135. find the numbers
1 solutions

Answer 417788 by Alan3354(30993) About Me  on 2012-10-25 20:12:46 (Show Source):
You can put this solution on YOUR website!
the sum of three consective odd numbers is 135. find the numbers
---------------
135/3 = the middle number


Finance/672022: Find the interest if it is computed using simple interest
1 solutions

Answer 417784 by Alan3354(30993) About Me  on 2012-10-25 19:53:36 (Show Source):
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Interest = Principal * Rate


Percentage-and-ratio-word-problems/672028: please help solve step by step,Thank you! James needs to mix a 30% glucose solution with a 60% glucose solution to create 100 millileters of a 30% solution. How many millileters of each solution must James use?
Answer: James must mix
millileters of 30% solution_____________
millileters of 60% solution_____________
1 solutions

Answer 417783 by Alan3354(30993) About Me  on 2012-10-25 19:52:38 (Show Source):
You can put this solution on YOUR website!
duplicate
----------
PS it's milliliters
Use ml


Percentage-and-ratio-word-problems/672046: James needs to mix a 30% glucose solution with a 60% glucose solution to create 100 millileters of a 30% solution. How many millileters of each solution must James use?
Answer: James must mix
millileters of 30% solution
millileters of 60% solution
1 solutions

Answer 417782 by Alan3354(30993) About Me  on 2012-10-25 19:50:40 (Show Source):
You can put this solution on YOUR website!
James needs to mix a 30% glucose solution with a 60% glucose solution to create 100 millileters of a 30% solution. How many millileters of each solution must James use?
----------------
100 of the 30%
None of the other.


Human-and-algebraic-language/672035: Could you please help me with this problem I've tried to figured it put several times and I just can't get it
The big screamer coaster carries 92 people altogether. Some of its cars carry 4 passengers and the rest carry 6 passengers. There are three less 6 passenger cars than 4 passenger cars. How many 4 passenger cars are there?
1 solutions

Answer 417779 by Alan3354(30993) About Me  on 2012-10-25 19:47:12 (Show Source):
You can put this solution on YOUR website!
The big screamer coaster carries 92 people altogether. Some of its cars carry 4 passengers and the rest carry 6 passengers. There are three less 6 passenger cars than 4 passenger cars. How many 4 passenger cars are there?
==================
f = 4 passenger cars
s = 6
-----
s = f - 3
4f + 6s = 92
-----
Can you do the rest?


Travel_Word_Problems/672031: a nitro-fueld dragster can accelerate 0 to 440 km/h in 5.0 s. assuming the vehicle's accelation is constant, calculate the vehicle's acceleration in meters per second squared.
1 solutions

Answer 417778 by Alan3354(30993) About Me  on 2012-10-25 19:45:15 (Show Source):
You can put this solution on YOUR website!
a nitro-fueld dragster can accelerate 0 to 440 km/h in 5.0 s. assuming the vehicle's accelation is constant, calculate the vehicle's acceleration in meters per second squared.
--------------
a = v/t
440 m/sec / 5 sec = 88 m/sec/sec


Exponential-and-logarithmic-functions/672025: 10^(x-3)=100^(4x-5)
1 solutions

Answer 417770 by Alan3354(30993) About Me  on 2012-10-25 19:10:48 (Show Source):
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10^(x-3)=100^(4x-5)
10^2 = 100
10^(x-3)=10^(8x-10)
x-3 = 8x-10
etc


Graphs/672021: If you spent 14 hours mowing lawns one week, how many hours did you have to wash windows to earn $400?
1 solutions

Answer 417767 by Alan3354(30993) About Me  on 2012-10-25 18:56:46 (Show Source):
You can put this solution on YOUR website!
If you spent 14 hours mowing lawns one week, how many hours did you have to wash windows to earn $400?
----------------
no idea. How many?


Linear-equations/672017: help solve 4x-3y=9
x+3y=6
1 solutions

Answer 417766 by Alan3354(30993) About Me  on 2012-10-25 18:54:48 (Show Source):
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4x-3y=9
x+3y=6
--------- Add


test/672019: How do u find the fair market value?
1 solutions

Answer 417765 by Alan3354(30993) About Me  on 2012-10-25 18:54:06 (Show Source):
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How do u find the fair market value?
----------
I don't.