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Surface-area/581596: is area always squared?
1 solutions

Answer 371715 by Alan3354(31518) About Me  on 2012-03-03 17:25:18 (Show Source):
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is area always squared?
-----
Area is always square units. sq ft, sq inches, sq meters, etc.
How could it be otherwise?


Angles/581562: what is the measurement of the supplement of a 69 degree angle
1 solutions

Answer 371713 by Alan3354(31518) About Me  on 2012-03-03 16:31:28 (Show Source):
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what is the measurement of the supplement of a 69 degree angle
--------
= 180 - 69 degs


test/581577: x+y=3
x-y=3
1 solutions

Answer 371711 by Alan3354(31518) About Me  on 2012-03-03 16:21:45 (Show Source):
You can put this solution on YOUR website!
x+y=3
x-y=3
----- Add


Rectangles/581547: I have a math project and its due March5,2012. i have to find the perimeter of a rectangle with one corner is a arch, how do i find the perimeter?
1 solutions

Answer 371701 by Alan3354(31518) About Me  on 2012-03-03 14:28:57 (Show Source):
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I have a math project and its due March5,2012. i have to find the perimeter of a rectangle with one corner is a arch, how do i find the perimeter?
----------------
How can a corner be an arch? A corner is an intersection of 2 lines, it's a point.


Equations/581539: a plumber charges $40 to come to your house. he chares $20 per hour. Write the expression
1 solutions

Answer 371695 by Alan3354(31518) About Me  on 2012-03-03 13:21:58 (Show Source):
You can put this solution on YOUR website!
Charge = $40 + $20*hours
C = 40 + 20h


Surface-area/581438: The area of a regular polygon is 36 square inches. Find the length of a side if the polygon has the given number of sides. Round your answer to the nearest tenth.
a. 3 b. 4 c. 6
d. Suppose the polygon is a pentagon. What would you expect the lenght of its side to be? Explain.
1 solutions

Answer 371669 by Alan3354(31518) About Me  on 2012-03-03 09:35:44 (Show Source):
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The area of a regular polygon is 36 square inches. Find the length of a side if the polygon has the given number of sides. Round your answer to the nearest tenth.
a. 3 b. 4 c. 6
-----------
Area+=+ns%5E2%2Acot%28180%2Fn%29%2F4 where n = # of sides & s = side length
s%5E2+=+4%2AArea%2Atan%28180%2Fn%29%2Fn
s+=+sqrt%284%2AArea%2Atan%28180%2Fn%29%2Fn%29+=+sqrt%28144%2Atan%28180%2Fn%29%2Fn%29
n = 3: --> s = 9.118 inches
n = 4: --> s = 6.000 inches
n = 5: --> s = 4.574 inches
n = 6: --> s = 3.722 inches
d. Suppose the polygon is a pentagon. What would you expect the lenght of its side to be?
It's between the lengths of 4 & 6. As the # of sides increases, the length decreases.
n = 20 --> s = 1.06788 inches
----------------------


Length-and-distance/581462: Find the distance between the points (-4, 6) and (8, -12).Round your solution to 2 decimal points.
I know how to do the DISTANCE FORMULA, but i do not know what it means when it says round your solution to 2 decimal points. I got the answer [d= sqrt of 180 = 13.45]
But i got 180.9025.
Help please and thank you.
1 solutions

Answer 371663 by Alan3354(31518) About Me  on 2012-03-03 09:10:31 (Show Source):
You can put this solution on YOUR website!
Find the distance between the points (-4, 6) and (8, -12).Round your solution to 2 decimal points.
----------
d+=+sqrt%28diffy%5E2+%2B+diffx%5E2%29+=+sqrt%2818%5E2+%2B+12%5E2%29+=+sqrt%28468%29
d =~ 21.633077
--> d = 21.63


Linear_Equations_And_Systems_Word_Problems/581371: 52. In which quadrants do the first and second coordinates have opposite signs?

1 solutions

Answer 371603 by Alan3354(31518) About Me  on 2012-03-02 20:16:21 (Show Source):
You can put this solution on YOUR website!
52. In which quadrants do the first and second coordinates have opposite signs?
---------
2 & 4


Volume/581272: 4. Find the surface area and volume of a right cone with a radius of
6 cm, slant height of 10 cm, and a height of 8 cm.
1 solutions

Answer 371602 by Alan3354(31518) About Me  on 2012-03-02 20:11:44 (Show Source):
You can put this solution on YOUR website!
Find the surface area and volume of a right cone with a radius of
6 cm, slant height of 10 cm, and a height of 8 cm.
---------------
Lateral area = s%2Api%2Ar s = slant height
-----------------------
===============
Vol = pi*r^2*h/3)))


Pythagorean-theorem/581300: the length of the hypotenuse of a 45-45-90 triangle is sqrt (32). what is the length of each of the legs?
1 solutions

Answer 371600 by Alan3354(31518) About Me  on 2012-03-02 20:04:51 (Show Source):
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the length of the hypotenuse of a 45-45-90 triangle is sqrt (32). what is the length of each of the legs?
--------------
h%5E2+=+s%5E2+%2B+s%5E2+=+32
h%5E2+=+2s%5E2+=+32
s%5E2+=+16
s = 4


test/581302: A) do e and m vary directly,inversely,or neither?
e)/1/2/3
m)/36/18/12 (this is a table)

B) if e and m vary directly or inversely,write a formula to express the relationship between them. if there is no relationship,explain why.

1 solutions

Answer 371599 by Alan3354(31518) About Me  on 2012-03-02 20:02:07 (Show Source):
You can put this solution on YOUR website!
A) do e and m vary directly,inversely,or neither?
e)/1/2/3
m)/36/18/12 (this is a table)
--------------
e*m = 36 for the 3 points given.
--> e = 36/m an inverse relationship.
--------------------------
B) if e and m vary directly or inversely,write a formula to express the relationship between them.
I did.
e = 36/m or m = 36/e
---------------------
if there is no relationship,explain why.


Square-cubic-other-roots/581362: Do I write my answer to the square root of 8 times the square root of 18 as the square root of 12 or just 12
1 solutions

Answer 371598 by Alan3354(31518) About Me  on 2012-03-02 19:57:10 (Show Source):
You can put this solution on YOUR website!
Do I write my answer to the square root of 8 times the square root of 18 as the square root of 12 or just 12
-----------------
sqrt%288%29%2Asqrt%2818%29+=+sqrt%288%2A18%29+=+sqrt%28144%29
That's 12
sqrt%28144%29 does not equal sqrt%2812%29


Travel_Word_Problems/581367: 62. Navigation. In 3 sec, Penny walks 24 ft, to the bow (front) of a tugboat. The boat is cruising at a rate of 5 ft/sec. What is Penny’s rate of travel with respect to land?
1 solutions

Answer 371597 by Alan3354(31518) About Me  on 2012-03-02 19:55:09 (Show Source):
You can put this solution on YOUR website!
In 3 sec, Penny walks 24 ft, to the bow (front) of a tugboat. The boat is cruising at a rate of 5 ft/sec. What is Penny’s rate of travel with respect to land?
----------------
24/3 = 8 ft/sec
8 + 5 = 13 ft/sec


Graphs/581294: Please help he solve this equation
+sqrt%282x%2B5%29=X-5+
I have to be able to fill out the table for it looks like this
x y1 y2
0 sqrt%285%29 -5
3 -2
5 sqrt%2815%29
10
15
18
20 sqrt%2845%29
And then I have to give the solution for x
I have to draw the graph and then state what the solution point (x,y) is.
I have no idea what this means.
Thanks

1 solutions

Answer 371596 by Alan3354(31518) About Me  on 2012-03-02 19:51:58 (Show Source):
You can put this solution on YOUR website!
+sqrt%282x%2B5%29=X-5+
Square both sides
2x%2B5+=+x%5E2+-+10x+%2B+25
x%5E2+-+12x+%2B+20+=+0
(x-2)*(x-10) = 0
x = 2, x = 10


Triangles/581304: one leg of a 45-45-90 triangle is a times b. what will the hypotenuse measure?

1 solutions

Answer 371589 by Alan3354(31518) About Me  on 2012-03-02 18:43:28 (Show Source):
You can put this solution on YOUR website!
one leg of a 45-45-90 triangle is a times b. what will the hypotenuse measure?
--------------
Side = a*b
Hyp+=+a%2Ab%2Asqrt%282%29


Travel_Word_Problems/581333: send me ans wit xplntn
Three partners invest Rs.2000, Rs.2500 and Rs.1100 in a business and earn a profit of 560. then, he share of person who invested Rs.2500 is
a) Rs.200
b) Rs.250
c) Rs.300
d) Rs.350
A train covers a distance between stations A and B in 45 Minutes. If the speed is reduced by 5 km/hour. It will cover the same distance in 48 Minutes, What is the distance between station A & B in Km? A) 60 B) 64 C) 80 D) 84
1 solutions

Answer 371588 by Alan3354(31518) About Me  on 2012-03-02 18:42:15 (Show Source):
You can put this solution on YOUR website!
send me ans wit xplntn
--------------
Post it in English, or some other language used by humans.


Triangles/581276: Find the value of x in each triangle.

a. 115
b. 125
c. 135
(No answer)
1 solutions

Answer 371587 by Alan3354(31518) About Me  on 2012-03-02 18:40:47 (Show Source):
You can put this solution on YOUR website!
Find the value of x in each triangle.

a. 115
b. 125
c. 135
(No answer)
---------------
Where is x?


Average/581353: if a quiz is 40% of my grade what will i have to get to go from a 79 to an 85
1 solutions

Answer 371585 by Alan3354(31518) About Me  on 2012-03-02 18:36:05 (Show Source):
You can put this solution on YOUR website!
if a quiz is 40% of my grade what will i have to get to go from a 79 to an 85
----------
The 79 is the other 60% then.
79*60 + grade*40 = 85*100
4740 + grade*40 = 8500
grade*40 = 3760
grade = 94
---------------


Functions/581310: 3+4+9X+10X















































1 solutions

Answer 371579 by Alan3354(31518) About Me  on 2012-03-02 17:54:46 (Show Source):
You can put this solution on YOUR website!
Do you have a question?
Why all the white space?


Travel_Word_Problems/581342: how far can a car travel at 90 kilometers per hour in 4.5 hours?
1 solutions

Answer 371577 by Alan3354(31518) About Me  on 2012-03-02 17:53:12 (Show Source):
You can put this solution on YOUR website!
how far can a car travel at 90 kilometers per hour in 4.5 hours?
-------------
d = r*t


Numeric_Fractions/581334: 1081 divided by 16 as a fraction
1 solutions

Answer 371576 by Alan3354(31518) About Me  on 2012-03-02 17:52:29 (Show Source):
You can put this solution on YOUR website!
1081 divided by 16 as a fraction
--------
= 1081%2F16


test/581344: Algebra
1 solutions

Answer 371575 by Alan3354(31518) About Me  on 2012-03-02 17:51:41 (Show Source):


Trigonometry-basics/581283: 1-(sin^2(alpha))/(1+cot(alpha))-(cos^2(alpha))/(1+tan(alpha))=sin(alpha)cos(alpha)

1 solutions

Answer 371549 by Alan3354(31518) About Me  on 2012-03-02 13:53:21 (Show Source):
You can put this solution on YOUR website!
1-(sin^2(alpha))/(1+cot(alpha))-(cos^2(alpha))/(1+tan(alpha))=sin(alpha)cos(alpha)
--------------
Do you have a question?


Mixture_Word_Problems/581164: a bottle and its content cost 60 cents, but content cost 18 cents more than bottle?

1 solutions

Answer 371548 by Alan3354(31518) About Me  on 2012-03-02 13:52:10 (Show Source):
You can put this solution on YOUR website!
a bottle and its content cost 60 cents, but content cost 18 cents more than bottle?
Is that a statement, or are you asking?
-------------
Do you have a question?


Travel_Word_Problems/581284: horatio travels 20 miles to the mall at 36mph but returns back to school in 15 minutes. how fast did he drive back to school?

1 solutions

Answer 371546 by Alan3354(31518) About Me  on 2012-03-02 13:41:12 (Show Source):
You can put this solution on YOUR website!
horatio travels 20 miles to the mall at 36mph but returns back to school in 15 minutes. how fast did he drive back to school?
-----------
20 mi/15 mins = (4/3) miles per minute


Exponential-and-logarithmic-functions/581229: x^1.2=15
1 solutions

Answer 371527 by Alan3354(31518) About Me  on 2012-03-02 10:06:37 (Show Source):
You can put this solution on YOUR website!
x^1.2=15
-----------
1.2*log(x) = log(15)
log(x) = log(15)/1.2
x+=+10%5E%28log%2815%29%2F1.2%29
--------
Most calculators will do
x+=+root%281.2%2C15%29


Travel_Word_Problems/581228: a car travels at a constant 84 mph in one direction then comes back covering the same distance at a constant 63 mph, what is the average speed?
1 solutions

Answer 371521 by Alan3354(31518) About Me  on 2012-03-02 09:44:16 (Show Source):
You can put this solution on YOUR website!
a car travels at a constant 84 mph in one direction then comes back covering the same distance at a constant 63 mph, what is the average speed?
-------------
Avg = 2*84*63/(84+63) = 72 mi/hr


Equations/581180: literal equation= x+5=b
1 solutions

Answer 371518 by Alan3354(31518) About Me  on 2012-03-02 09:33:48 (Show Source):
You can put this solution on YOUR website!
literal equation= x+5=b
------------
What about it?


Coordinate-system/581213: how do u get the answer for y-2=2(x-3)
1 solutions

Answer 371516 by Alan3354(31518) About Me  on 2012-03-02 09:28:26 (Show Source):
You can put this solution on YOUR website!
how do u get the answer for y-2=2(x-3)
-------------
What is the question?


Triangles/581219: In a right angle triangle its hypotenuse is 13 cm its perpendicular is 12 cm and its base is 5 cm long. A circle is inscribed in it. Find its radius
1 solutions

Answer 371515 by Alan3354(31518) About Me  on 2012-03-02 09:24:09 (Show Source):
You can put this solution on YOUR website!
In a right angle triangle its hypotenuse is 13 cm its perpendicular is 12 cm and its base is 5 cm long. A circle is inscribed in it. Find its radius
------------
For right triangles, it's
a*b/P where a & b are the 2 legs and P is the Perimeter.
r = 5*12/30
r = 2 cm


test/581147: 8a(cubed)+c(cubed)
1 solutions

Answer 371513 by Alan3354(31518) About Me  on 2012-03-02 08:33:47 (Show Source):
You can put this solution on YOUR website!
= 8a%5E3+%2B+c%5E3
Do you have a question?