Questions on Geometry: Geometric formulas answered by real tutors!

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Question 937231: I can't seem to find all the formulas in Geometry
please help
Click here to see answer by Alan3354(69443)

Question 937879: Write a quadratic equation in two different forms that has roots of 3 and -3
Click here to see answer by TimothyLamb(4379)

Question 939340: The area of a circle is 154 . What is the circumference in the nearest inch?
Click here to see answer by srinivas.g(540)

Question 940764: Given: A= {2, 4}, B= {2}

What are the four subsets of A U B?
Click here to see answer by Fombitz(32388)

Question 943795: Angle ABC =68 degrees
Measurement of angle 1 and angle 2 within angle ABC ARE EQUAL.
I NEED TO FIND THE THE MEASUREMENT OF ANGLE 1. I believe it is 68 divided by 2 making angles 1 and 2 each 34 degree angles. m <1=34 degrees
If this is right how do I express that mathematically?
Click here to see answer by MathLover1(20850)

Question 945314: Solve for x . x-4/x+6=x+9/x-1
Click here to see answer by Alan3354(69443)

Question 945160: how i can calculate area of quadrilateral having unequal four side with known diagonal.
Sides: 33,40,45 & 65 Diagonal:72
Click here to see answer by KMST(5328)

Question 945320: solve for x. x+2(4x)=x+4(2x+4)
Click here to see answer by Fombitz(32388)

Question 946224: Hello! I was asked this question: "The general equation of a plane is Ax + By + Cz = D, where A, B, C, and D are real numbers and A is nonnegative. Find the equation of the plane containing the points (3, 0, 0), (0, 6, 0), and (0, 0, 6). Show each step of your process." I am not quite sure on how to complete this question. If you could walk me through this, that would be great. Thanks
Click here to see answer by Fombitz(32388)

Question 949303: What is the approximate measure of C if AB is 8 meters and AC is 14 meters?
Click here to see answer by MathLover1(20850)

Question 950752: draw the line whose x-intercept is 2 and whose y-intercept is 6 and write the equation of this line
Click here to see answer by Fombitz(32388)

Question 950757: draw the graph of the function f(x)=12/x^2-4

Click here to see answer by Fombitz(32388)

Question 951393: To cover a rectangular region of her yard, Penny needs at least 170.5 square feet of sod. The length of the region is 15.5 feet. What are the possible widths of the region?
Click here to see answer by macston(5194)

Question 954795: Can a pie chart with 360 degrees be converted to a rectangle?

Click here to see answer by Fombitz(32388)

Question 957551: kylee is using her laptop to collect some images for a project.she has one rectangular image that measures 4.8cm by 6.2cm.kylee then enlarges the image so it now measures 16.8cm by 21.7cm.
(a) what is the scale factor of this enlargement (i think it is 3.5 )
Later kylee finds the image is now too big.she clicks the mouse to reduce the image to 7.2cm by 9.3cm.
(b) what is the scale factor of this reduction of the enlarged image used in part (a)
(c) overall,has the image been enlarged or reduced?find the scale factor for this overall change.
(d) if the original image changes from 4.8cm to 10.2cm,but the width remains the same as before,does this make it a true enlargement of the original image.
Click here to see answer by Theo(13342)

Question 960580: Equation is A=1/2h(b1+b2) solve for b2. Please help I keep trying and can not solve it.
Thanks Heather
Click here to see answer by harpazo(655)

Question 960829: What is the complement of a 39 degree angle?
Click here to see answer by Alan3354(69443)

Question 961595: I would like to know why the quadratic equation works? What is the proof for it? I see it online but I don't seem to understand it. Thanks
Click here to see answer by josgarithmetic(39617)

Question 962946: if a triangle with all sides equal length has a perimeter of 15x+27, what is an expression for the length of one of it's sides?
Click here to see answer by rothauserc(4718)

Question 962954: find the area of a right triangle with a hypotenuse of 11 cm and a leg of 4 cm. round to the nearest hundredth of a square centimeter
Click here to see answer by addingup(3677)

Question 963574: C divides AB into a ratio of 1:3. If A=(-4,5) and C=(-3, 5.5), find B.

Click here to see answer by Fombitz(32388)

Question 964267: Solve by making a u-substitution. X(to the 4th power)-84x(to the 2nd power)+320=0
Click here to see answer by Alan3354(69443)

Question 964384: What is the sum of the measures of the interior angles of the followings shapes?
A triangle ___________
A rectangle __________
A pentagon ________________
Click here to see answer by Alan3354(69443)

Question 964768: Using the diagram below, find YZ if XW=14, ZW=10, and XY=2.
Diamgram:
http://assets.openstudy.com/updates/attachments/55346523e4b05092e55ce833-clynnew-1429497131546-p2.jpg
Click here to see answer by Fombitz(32388)

Question 965547: What is the standard form of the equation below?
x2 + y2 - 2x - 4y = 4
A. (x + 2)^2 + (y - 2)^2 = 8
B. (x - 1)^2 + (y - 2)^2 = 9
C. (x + 1)^2 + (y + 4)^2 = 16
D. (x - 4)^2 + (y + 2)^2 = 25
Click here to see answer by t0hierry(194)

Question 967400: Find the circumference and area of a circle with a diameter of 14 inches. Leave your answers in terms of pi.
A) C = 14π; A = 49π
B) C = 7π; A = 28π
C) C = 14π; A = 28π
D) C= 7π; A = 49π
I think its A... am i correct?
Click here to see answer by jim_thompson5910(35256)

Question 967399: Given a cube with a volume of 18 cm3, what is the volume of a square pyramid that can fit perfectly inside the cube?
A. 3cm3
B. 6cm3
C. 9cm3
D. 12cm3
Click here to see answer by jim_thompson5910(35256)

Question 967401: Find the volume of a cylinder with a diameter of 10 inches and a height that is three times the radius. Use 3.14 for pi and round your answer to the nearest tenth. (Hint: You may only enter numerals, decimal points, and negative signs in the answer blank)
i got 1177.5 is that correct?
Click here to see answer by jim_thompson5910(35256)

Question 967411: Given a soda can with a volume of 36 and a diameter of 4, what is the volume of a cone that fits perfectly inside the soda can? (Hint: only enter numerals in the answer blank).

I think the answer might be 12
Click here to see answer by jim_thompson5910(35256)

Question 967447: Three consecutive terms of a Geometric progression are -6, p and -3\2. Find P
Click here to see answer by amarjeeth123(569)

Question 967579: If the volume for 3-D polyhedra A is 300 cm3 and the volume for 3-D polyhedral B is 900 cm3, how many times bigger is the volume of pyramid B than pyramid A?
3%
30%
300%
3000%
is it 300%??
Click here to see answer by Alan3354(69443)

Question 967580: Pyramid A is a square pyramid with a base side length of 12 inches and a height of 8 inches. Pyramid B is a square pyramid with a base side length of 24 inches and a height of 16 inches. How many times bigger is the volume of pyramid B than pyramid A?
Is the answer 8?
Click here to see answer by Alan3354(69443)

Question 967573: If the volume for 3-D polyhedra A is 300 cm3 and the volume for 3-D polyhedral B is 900 cm3, how many times bigger is the volume of pyramid B than pyramid A?
A. 3%
B. 30%
C. 300%
D. 3000%
is it C??
Click here to see answer by Alan3354(69443)

Question 967578: An hourglass consists of two sets of congruent composite figures on either end. Each composite figure is made up of a cone and a cylinder:
--Hourglass with sand measuring 47 millimeters high
� 2011 Jupiterimages Corporation
Each cone of the hourglass has a height of 12 millimeters. The total height of the sand within the top portion of the hourglass is 47 millimeters. The radius of both the cylinder and cone is 4 millimeters. Sand drips from the top of the hourglass to the bottom at a rate of 10π cubic millimeters per second. How many seconds will it take until all of the sand has dripped to the bottom of the hourglass?
A. 6.4
B. 62.4
C. 8.5
D. 56.0
i think its B??

Click here to see answer by Theo(13342)

Question 969269: Endpoint: (-10,-9) Midpoint: (-8,-6) Endpoint ??
Click here to see answer by Fombitz(32388)

Question 969652: The number of goldfish in a tank is 19, and the volume of the tank is 52 cubic feet. What is the density of the tank?
A 0.22 goldfish per cubic feet
B 0.27 goldfish per cubic feet
C 0.33 goldfish per cubic feet
D 0.37 goldfish per cubic feet
i think its D am I right??
Click here to see answer by Alan3354(69443)

Question 970296: Hello, please help, I am asked to solve geometric word problems. You can say word problems are the hardest for me, I seem to not know where to start and right now I am so confused. Someone help me understand? Thanks
The perimeter of a rectangular field is 60 meters. Its area is 200 square meters. Find its dimensions
Click here to see answer by josgarithmetic(39617)

Question 970770: Jason is attempting to rest a piece of wood on a cement ball so that the angle of elevation of the resulting ramp is exactly 18 degrees. Jason draws the sketch below to model this situation. He labels the point of tangency between the ramp and the cement ball, A, the center of the ball, B, and the point of tangency between the flat ground and the ball, C, and the point where the ramp will touch the ground, D. If the radius of the cement ball is 21 inches, find the distance between points C and D so the damp will have the desired angle of elevation. Round your answer the the nearest inch.
Click here to see answer by jim_thompson5910(35256)

Question 972411: Question:
Gabe's garden is in the shape of a triangle with a base of 28 ft and height of 24 ft. Gabe has plants that require 6 ft 2 to grow properly. What is the area of the garden? What is the greatest number of these plants that Gabe can fit into the garden?
Click here to see answer by macston(5194)

Question 973153: Please Help
Generate a formula for the nth Octagonal number by relating to one or more figurate numbers with fewer than seven sides(by relating to hexagonal, pentagonal, square, oblong or triangular numbers).

Click here to see answer by solver91311(24713)

Question 973185: Twenty water tanks are decreasing in size in such a way that the volume of each tank is 0.5 the volume of the previous tank. The first tank is empty, but the other 19 tanks are full of water. Would it be possible for the first water tank to hold all the water from the other 19 tanks? Motivate your answer.

Click here to see answer by Alan3354(69443)

Question 974471: f(x) = x^2 + x-2, find f(a-1)
Click here to see answer by algebrahouse.com(1659)

Question 974474: The radius of a circle is 32.4 m. find the length of an arc of the circle intercepted by a central angle of 7pi/6 radians
Click here to see answer by Alan3354(69443)