Questions on Geometry: Geometric formulas answered by real tutors!

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Question 975312: the length of a rectangle is 5 ft longer than its width. if its area is 36 ft, what are its dimensions?
Click here to see answer by algebrahouse.com(1659)

Question 978137: standard equation with a focus at 6,8 and directrix at y=-2
Click here to see answer by josgarithmetic(39617)

Question 979054: The diagonal of a rectangle is 10.what is the area of rectangle
Click here to see answer by Alan3354(69443)

Question 979691: A line passes through a circle at two points. Another line passes through the same circle at two points. These two lines intersect at a point on a circle. In how many parts is the circle divided?
Click here to see answer by josgarithmetic(39617)

Question 980491: in geometric progression please solve for r: S = rL -a / r - 1
thank you
Click here to see answer by solver91311(24713)

Question 981637: Line AB contains points A (0, 1) and B (1, 5). The slope of line AB is
A) −4
B)negative 1 over 4
C)1 over 4
D) 4
i think its B???
Click here to see answer by Alan3354(69443)

Question 981640: Point A is located at (0, 4), and point B is located at (−2, −3). Find the point that is 1 over 4 the distance from point A to point B.
A. (−1, 0.75)
B. (−0.75, 2)
C. (−0.5, 2.25)
D. (−0.25, 3)

i think its C??
Click here to see answer by josgarithmetic(39617)

Question 981643: When the coordinates (1, 1), (7, 3), (8, 0), and (2, -2) are joined, which shape is formed?
A. Parallelogram
B. Rectangle
C. Rhombus
D. Square
C????
Click here to see answer by Alan3354(69443)

Question 981832: The segment joining (-3,-2) and (-1/2,3) is extended a distance equal to 4/5 of its own length. Find the terminal point.
Click here to see answer by Cromlix(4381)

Question 982064: if three sides of trapezoid are 18.318mm, 17.02296 and 17.02296 the what is the length of fourth side??
Click here to see answer by Edwin McCravy(20056)

Question 982744: Find the value of the acute angle, if the obtuse angle is 136 degrees.
Click here to see answer by Alan3354(69443)

Question 982715: An infinite geometric series has first term 70 and common ratio -0.23.
To 2 decimal places, what is the sum to infinity of this series?
Click here to see answer by KMST(5328)

Question 984081: Find the equation of the line joining (1,-1,3) to (3,3,-1). Show that it is perpindicular to the plane
2x+4y-4z=5
Click here to see answer by Edwin McCravy(20056)

Question 984356: find a if given c and theta
Click here to see answer by Timnewman(323)

Question 984455: How do you do midpoint and distance?
Click here to see answer by Fombitz(32388)

Question 984567: Hi! I am finite mathematics and we are studying "sets". Here is my question.
U= {1,2,3,4,5,6,7,8,9,10}
A={1,3,5,7,9}
B={2,4,6,8,10}
C={1,2,4,5,8,9}

QUESTION: (AuBuC)^C
Click here to see answer by solver91311(24713)

Question 984839: Draw a line ab intercept plane q at w

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Question 984951: Trapezoid TRAP has bases TR= y + 7 and AP= 3y + 5. If the median of TRAP has length 6y- 10, find y
Click here to see answer by Tatiana_Stebko(1539)

Question 984951: Trapezoid TRAP has bases TR= y + 7 and AP= 3y + 5. If the median of TRAP has length 6y- 10, find y
Click here to see answer by solver91311(24713)

Question 986224: A square and an equilateral triangle have equal perimeters. The area of the triangle is 163 square centimeters. How long, in centimeters, is a diagonal of the square? Express your answer in simplest radical form.
Thank you
Click here to see answer by josgarithmetic(39617)

Question 986695: angle ABC is 25 degrees
angle ABD = 2x-y
angle DBC = 3y-x
ray BD bisects angle ABC
find the equations
Click here to see answer by stanbon(75887)

Question 986915: Please help with this geometry question!
http://www.intervisualtechnology.us/data/1/13918/unit_4_5_q2.png
a)15
b)70
c)55
d)105
Click here to see answer by Fombitz(32388)

Question 987483: How many elements does each of these sets have where a and b are distinct elements?
A) P ({a, b, {a, b} })
B) P ({0, a, {a} , { {a} })
C) P (P { ( ) }
Click here to see answer by farohw(175)

Question 988607: The fourth term of a geometric progression exceeds the third term by 54, and the sum of the second and third term is 36. Find the common ratio if it is positive
Click here to see answer by MathLover1(20850)

Question 988965: please help me on this one....A farmer has 60m of fencing to make a rectangular pen for his goat, find the maximum possible area of the pen.... i tried to derive the expression : l=30-w. And the expression for the area in terms of the width : A=-w^2 +30w
Click here to see answer by josgarithmetic(39617)

Question 989072: Hello, I am a junior in high school looking for help to get a formula. I need this formula to solve an equation in which I want to know the number of sides in a regular polygon, where I am given the circumradius and a side length.
Thanks in advance,
Tyler
Click here to see answer by Alan3354(69443)

Question 989630: k^2-16k+100=k^2-4k+85
Click here to see answer by josgarithmetic(39617)

Question 989633: k^2-16k+100=k^2-4k+85 (Sorry if I have sent this already, I don't know if the first one was sent!)
Click here to see answer by rothauserc(4718)

Question 990111: You are watching a pitcher who throws two types of pitches, a fastball(F) and a curveball(C). You notice that the order of pitches was F,C,F,F,C,C,F,F,F. Assuming that this pattern continues, predict the next five pitches
Click here to see answer by farohw(175)

Question 991444: Find the next five terms, then write a conjecture.
1, 8, 27, 64, ___, ___, ___, ___, ___
Click here to see answer by solver91311(24713)

Question 991463: the larger of two numbers is 10 less than twice the smaller number.If the sum of the two numbers is 38,find the two numbers.
Click here to see answer by macston(5194)

Question 993396: An angle measure 69
Click here to see answer by ikleyn(52787)

Question 993396: An angle measure 69
Click here to see answer by Alan3354(69443)

Question 993703: A chord of length 24cm is 13cm from the centre of the circle.calculate the radius of the circle
Click here to see answer by Alan3354(69443)

Question 994045: the length of a garden is 10 m more than twice the width. The are is 120m2. What are the dimensions of the garden to the nearest tenth metre?
Click here to see answer by Boreal(15235)

Question 997512: A prism has congruent isosceles triangle for 2 of its faces. The ratio of one of the equal sides of one triangle to its base to the long edge of the prism is 5:8:9. The total volume of the solid is 6,912 cubic centimeter.
1. What is the perimeter of one triangle face?
2. What is the surface area of the entire solid?
Click here to see answer by Theo(13342)

Question 997927: If the area is 529 and the perimeter 92, what do each side measure?
Click here to see answer by fractalier(6550)

Question 999142: A=C+D/2 solve of D
Click here to see answer by Alan3354(69443)

Question 999342:
Hey guys this question is still boggling my mind :) You see I have a test coming up but I dont understand this question. Please help!!!
Write the equation of the line passing through point (4, -1) and perpendicular to the line whose equation is 2 x - y - 7 = 0.
y = -1/2x + 1
y = -1/2 x - 1
y = 2 x + 1
y = 2 x - 1
Thank you so very much
Click here to see answer by Fombitz(32388)

Question 999526: find the counterexample to show that each conjecture is false for if

Click here to see answer by MathLover1(20850)

Question 1000036: ABCDEFGH is a regular octagon.
Work out the value of x, explain your geometric reasoning clearly and logically.
Click here to see answer by Alan3354(69443)

Question 1001076: Half Dome trail at Yosemite National Park is 26.9 km round trip. It is shown on a map with a scale of 2.5cm=3km. How many cm long is the trail on the map?
Click here to see answer by stanbon(75887)