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How far are the boats apart? 2008-11-14
From dom:
Two boats leave port at the same time. They leave at 150 degree angle. One boat travels at 10mph and the other at 20mph. After two hours how far are the boats apart?
Answered by Penny Nom.
Confusion in a multiple choice question 2008-11-14
From BJ:
My son got this math problem which he could mostly solve. Here it is:

The highest location in a certain country is 4525 m above sea level. The lowest point in the same country is 192 m below sea level.

a) Find the difference of the two elevations. His answer: a-(-b)= a+b or 4525-(-192)= 4525+192=4717 m. No problem.

b) A city is 2221 m above sea level. Is this elevation closer to the highest point or the lowest point? His answer: highest point because: 4525-2221= 2304 m (closest to the highest point) and 2221-(-192)=2221+192= 2413 m. (farthest to the lowest point). OK so far.

But then he was given 4 choices for this question with no other information:

a) 4717 m; lowest b) 4333 m; lowest c) 4333 m; highest d) 4717 m; highest

What does it mean? What's the connection with the rest of the problem?

Answered by Harley Weston.
Arrays of 72 marbles 2008-11-13
From natalie:
draw four possible arrays for 72 marbles
Answered by Penny Nom.
A cross-sectional area 2008-11-13
From David:
I am doing a science project examining the tensile strength of seaweed fronds. I need to calculate the cross-sectional area from the major and minor diameters of the elliptical central axis of the seaweed frond. What formula would I use to get this. The strength of the segments is expressed in terms of cross-sectional area of the frond at the test site.
Answered by Penny Nom.
A trig Identity 2008-11-13
From Rebecca:
Question from Rebecca, a student:

How do I prove:

     1/sin@                csc@                -2sin@
________      +       ______       =    _____
1 + CSC@         1-1/sin@                 cos^@
Answered by Penny Nom.

What is -5x+3y=24? 2008-11-13
From Robert:
What is -5x+3y=24???????
Answered by Stephen La Rocque.
The angles and sides of a triangle 2008-11-13
From JAMIE:
a triangle with a side(b)37m an angle(C)70degrees and (a)79m find values of angles A and B and length of side c
Answered by Stephen La Rocque.
A circle and a chord 2008-11-13
From jane:
the center of a circle is at (-3,2) and its radius is 7. find the length of the chord, which is bisected at (3,1).
Answered by Penny Nom.
This question needs to be thrown away 2008-11-13
From ang:
I'm a friend trying to help a friend in lower algebra. I feel like this question needs to be thrown away. It's so ill written.
Find an mathematical expression/equation: Half of the quotient of the total of a number and negative six and a number less negative six is the ratio of a number to a number more than negative seventeen

Answered by Stephen La Rocque and Harley Weston.
An odd shaped lot 2008-11-13
From Janice:
Hi I am attaching a survey of an odd shaped real estate lot. I am hoping you can help me determine the acreage.

Janice

Answered by Harley Weston.
How do you work out 2/17 as a decimal? 2008-11-13
From p:
how do you work out 2/17 as a decimal?
Answered by Penny Nom.
The volume of a cyclone 2008-11-13
From Dianna:
I need to figure the cubic yards of a cyclone. 144" down to 48" 60" high
Answered by Penny Nom.
An equation with three radicals 2008-11-13
From Crystal:
I need to solve this radical equation but i am confused on how to solve it with three square roots in it. sqrt(3x)+3-sqrt(2x-3)=sqrt(3x-2)
Answered by Harley Weston.
A barrel on its side 2008-11-13
From Dave:
Question from Dave:

How many gallons are left in a 36x60 in. barrel (laying on its side) and has 16 in. of gasoline left. I have attached a diagram.

Answered by Harley Weston.
Real and imaginary zeros 2008-11-12
From David:
Find all the real and imaginary zeros for each polynomial. Factor each polynomial. Leave factors with imaginary zeros in quadratic form.

h(x)= x^5 +2x^4 - 10x^3 -20x^2 +9x + 18

Answered by Harley Weston.
 
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