Questions on Geometry: Geometric formulas answered by real tutors!

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Question 325048: Which of the lists of three lengths can form a triangle?
a. 1, 2, 3
b. 2, 3, 4
c. 2, 3, 5
d. 3, 5, 9

Click here to see answer by jim_thompson5910(35256)

Question 325734: If AB <--> (it has the arrow part over AB) contains the points (19,3) and (-5,-13), what is the slope of the line perpendicular to AB <--> (again arrow part I drew over AB)? Answer has to be written as a decimal.
Click here to see answer by scott8148(6628)

Question 326049: In circle O, the midpoint of GH is point O. AB = 4x - 2 and CD = 2x + 10. Find the value of AB
Click here to see answer by Fombitz(32388)

Question 326620: what is most nearly the cost of concrete to repair a bridge wing wall. the wing wall measurement are 20 feet 6 inches long by 7 feet 9 inches wide by 10 inches thick delivered to the site concrete is $ 81.00 per cubic yard including tax and must be ordered by the full yard
Click here to see answer by mananth(16946)

Question 327304: x2 + 5x + 100=180
Click here to see answer by Fombitz(32388)

Question 328880: (3x^2-5x)-(x^2+4x+3)
Click here to see answer by checkley77(12844)

Question 328940: 7x+30=9x
Click here to see answer by Fombitz(32388)

Question 329279: what is the volume of a sphere if it has a radius of 2 feet?
Click here to see answer by solver91311(24713)

Question 329296: what is the volume of the cylinder? the top is 15in.and the side 21in.
Click here to see answer by Alan3354(69443)

Question 329293: what is the slant height of a square pyramid that has a surface area of 279 square meters and a side length of 9 meters?
Click here to see answer by solver91311(24713)

Question 329291: what is the surface area of a sphere with a diameter of 12 centimeters?
Click here to see answer by Fombitz(32388)

Question 329635: 3^4*3^6=
Click here to see answer by unlockmath(1688)

Question 329748: Can you please help me solve this question?
If a hole is 6ft. in diameter, and is 3 ft. deep, how many cubic yards of fill do you need?
Click here to see answer by Alan3354(69443)

Question 330920: Which of the lists of three lengths can form a triangle?
a. 1, 2, 3
b. 2, 3, 4
c. 2, 3, 5
d. 3, 5, 9

Click here to see answer by Alan3354(69443)

Question 330961: my question is: the direction of a sraight line is such that the line falls 3 units farther below the x-axis for every unit it moves farther into the right. What is the slop of the line?
Click here to see answer by solver91311(24713)

Question 330962: the y-intercept of a straight line is best described as
a. the point where the line crosses the x-axis
b. any y-coordinate of a point on the same line.
c. the x-intercept when y=0
d. the y-intercept when x=0
Click here to see answer by Fombitz(32388)

Question 332208: find the equation of the bisector of the acute angles and also the equation of the obtuse angles formed by the lines 7x-2y=4 and 3x+5y=15.
Click here to see answer by Alan3354(69443)

Question 332581: Find the nest three terms of the geometric sequence 4, 10, 25 Thank you
Click here to see answer by checkley77(12844)

Question 332923: find the slope of a line parallel to the graph of each equation
6x+2y=4
Click here to see answer by Jstrasner(112)

Question 332843: LM=3X+8 Y=2X-5 LN=23
Click here to see answer by nyc_function(2741)

Question 333200: What are the next three terms of the geometric sequence 5, 15, 45, ? Thank you
Click here to see answer by benazir.sj@gmail.com(109)

Question 333215: I need help writting verbal expression to represent, 5 - 2x = 4
Click here to see answer by rfer(16322)

Question 333344: What is the eighth term of the geometric sequence whose first three terms are
3, 6, and 12 Thanks
Click here to see answer by Tutorteddy.Com(12)

Question 333622: D is between T and Q how do I find the answer to the question
Click here to see answer by Alan3354(69443)

Question 333746: please help. find the value of x for the following equation: ln x ^3 = 9
Click here to see answer by nerdybill(7384)

Question 333748: solve 10X=5
Click here to see answer by mananth(16946)

Question 333747: solve for x: 10^3X=1000

Click here to see answer by mananth(16946)

Question 333831: 7/4q-2=(-5)or the fraction seven over four times q minus two equals negative five. So, what does q equal?
Click here to see answer by rfer(16322)

Question 334093: What is the common ratio of the sequence 2, 4, 8, 16, 32, ? Thank you
Click here to see answer by mananth(16946)

Question 334392: suppose 4x-3y=12, what is the value of x if y=6?
Click here to see answer by rfer(16322)

Question 334531: Exponential and Logarithmic Functions
write in equation in exponential form
Log7 7=1
I never done these before?
Click here to see answer by Alan3354(69443)

Question 335343: I'd Like To Know How To Solve 4x-6+2x-5
Click here to see answer by checkley77(12844)

Question 335343: I'd Like To Know How To Solve 4x-6+2x-5
Click here to see answer by benazir.sj@gmail.com(109)

Question 335454: 4x+8-4=-16
Click here to see answer by checkley77(12844)

Question 337581: what's the answer for x+5=16
X+5-5=16-5
X=11
Click here to see answer by chiexpert(48)

Question 337582: 0=x+-12
0+12 = X+-12+12
12 = X
Click here to see answer by chiexpert(48)

Question 337580: whats the answer to 1/6a+-7=-4
1/6A+-7+7 = -4+7
1/6A=3
6/1*1/6A = 3*6
A=18
Click here to see answer by chiexpert(48)

Question 338018: M is the midpoint of segment LN. I'm supposed to find x and the length of each segment...I don't know how to solve this-but i already know how midpoint works. Please explain step by step!!! Thanks!
LM=(x+16)/5 MN=(x-4)/3
Click here to see answer by solver91311(24713)

Question 339415: This is a four part question.
Part 1: Insert a number so the MEDIAN is 17:
15, 20, 18, _____
Part 2: Remove a number so that the mode is 45:
54, 63, 45, 76, 86, 45, 63, 81, 55 (Remove: _____)
Part 3: Remove a number so that the mean is 16.2:
9.9, 20, 6.5, 36, 12.1, 46.2, 12.7 (Remove: _____)
Part 4: What is the mean of all three answers?
Click here to see answer by stanbon(75887)

Question 339615: Hello,
Could you please help me with my problem.
It asks, Use the figure at the right to answer this question.
☻▬▬▬▬|▬▬▬▬☻▬▬▬▬|▬▬▬▬☻
S T U
Given: ST = 3x + 3 and TU = 2x + 9.
a. What is the value of ST?
b. What is the value of TU?

What I know is that ST = TU. But then I'm comepletely stuck on evrything else. I'm comepletely ignorant of how to do these problems. I'm asking for complete details on how to do these. Thank you so much.
Click here to see answer by scott8148(6628)

Question 340345: Find the volume of a right circular cylinder whose base has an area of 9 sq. in. and whose height = 6".
Click here to see answer by solver91311(24713)

Question 340723: What's (-16)+t=7
I got this:
(-16)+t=7
t+(-16)-(-16)= 7-(-16)
7+16
23
Am I right?
Click here to see answer by jim_thompson5910(35256)

Question 341413: Hi,
I am currently tutoring H.S. Math and I'm horrible at Math! Do you have a good book (text book or otherwise) that you could recommend, when teaching H.S. Math?
Also, I'm stuck on this question....
At Southport College, walkways currently run between buidlings as follows: from Hammond to Fields, and from fields to Watson (as shown in the diagram below). However, students walking from Hammond to Watson routinely cut across the lawn.
And then there is a picture of a right triangle: the base is 20 m, the other side is 48 m and then the third side is the proposed walkway, which you have to figure out.
Haniya, who supervises maintence, plans to propose a direct walkway from Hammon to Watson. In her report, what length, in meters, should she indicate for the propsed walkway?
the answers are:
1) 50
2) 52
3) 56
4) 58
5) 68
The answer is 2) 52.
How do I do this problem? Step by Step....

Thank you!
Lesley Glueck
Click here to see answer by Theo(13342)

Question 341736: Use the Pythagorean Theorem to find the distance between each pair:
)A(0,0), B(8,6)
2)E(-2,-1), F(3,11)
Find the coordinates of the midpoint of a segment having the given endpoints:
1)1(8,4), B(12,2)
2)E(-11,-4), F(-9,-2)
3)J(3.4,2.1), K(7.8,3.6)1
Could you show me your solution?
Thank you=)
Click here to see answer by checkley77(12844)