Questions on Geometry: Geometric formulas answered by real tutors!

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Question 1036397: How do I solve Triangle ABC
with vertices A (-4,4) B (3,4) and C (3,-2)
Click here to see answer by macston(5194)

Question 1037271: A lot runs between two parallel streets. The length of the lot on one of the streets is 80-ft. The length of the lot on the other street is 100-ft. The area of the lot is 18,000 square feet. How far apart are the two streets? (The formula for the area of a trapezoid is A=1/2(b1+b2)h
Click here to see answer by Cromlix(4381)

Question 1038051: R=36in

Click here to see answer by Alan3354(69443)

Question 1038051: R=36in

Click here to see answer by addingup(3677)

Question 1038195: what is the location of the point on the number line that is 4/7 of the way from a=4 to b=18?
Click here to see answer by josmiceli(19441)

Question 1038435: find the vertex of the function y=(x-2)^2+6
Click here to see answer by Edwin McCravy(20056)

Question 1038447: the length of a rectangular garden is 184 feet less than 3 times the width. The area of the garden is 12,875 square feet. what is the perimeter of the garden?
Click here to see answer by jorel1380(3719)

Question 1038436: find the vertex form of the quadratic function y=-2x^2+12x+13
Click here to see answer by josgarithmetic(39617)

Question 1038441: graph y=-2x^2+7 on your paper. find domain and range
Click here to see answer by Boreal(15235)

Question 1038476: If A(-1,-7) B(2,2) C(4,8), show that C lies on AB.
So I found that the general equation of AB is 3x-y-4=0, then how do you prove that C lies on AB from that? Thanks!
Click here to see answer by josgarithmetic(39617)

Question 1038547: A softball is thrown upward with an initial velocity of 56 feet per second from 3 feet above the ground. The balls height in feet above the ground is modeled by h(t)=-16t�+56t+3, where t is the time in seconds after the ball is released. What is the maximum height of the ball?
Click here to see answer by ikleyn(52787)

Question 1038440: graph y=x^2-4 on your paper. find domain and range
Click here to see answer by Othel(27)

Question 1038743: 1. Given the following set of data, find the quadratic regression equation. (-3,-31), (-2,-24), (-1,-18), (0,-12), (1,-14), (2,-21), (3,-32)

2. Using the quadratic regression, predict the value when x=6.
Click here to see answer by Fombitz(32388)

Question 1038872: A playground is being built in the shape of a circle with a diameter of 20 feet long.
a) How much sod (grass) would need to bought to cover the playground?
Amount of sod(grass) =
b) How much fencing would need to bought to enclose the playground?
Amount of fencing =
Please help. I'm unsure what formulas I need to use for each problem.
Click here to see answer by josgarithmetic(39617)

Question 1039379: Determine if the following parabola opens up, down, left or right.
4(y-1)=(x+3)^2
Click here to see answer by addingup(3677)

Question 1038439: graph y=-3x^2+4 on your paper. find domain and range
Click here to see answer by tampham5396(3)

Question 1040286: what are the first 3 terms of a geometric progression of -540, -20?
Click here to see answer by ikleyn(52787)

Question 1040514: The hypotenuse of a right triangle is 12 inches and the area is 24 square inches. Find the dimension of the triangle, correct to one decimal place.
Click here to see answer by Alan3354(69443)

Question 1040515: The diagonal of a rectangle is 10 inches and the area is 45 square inches. Find the dimensions of the triangle, correct to one decimal place.
Click here to see answer by rothauserc(4718)

Question 1040485: A frustum of a solid cone has height 30cm,radius 10cm and 15cm.Determine the:
(i) height of original cone
(ii) volume of the frustum
(iii) total surface area of the frustum
Click here to see answer by josgarithmetic(39617)

Question 1040508: A lumber mill cuts rectangular beams from circular log. If the diameter of the log is 16 inches and the cross-section area of the beam is 120 square inches, find the dimensions of the cross section of the beam correct to one decimal place.
Click here to see answer by solver91311(24713)

Question 1040573: The daily production P in an automobile assembly plant is always within 20 units of 500 units. Write the daily production as an absolute value inequality, then solve to find the range of daily productions possible.
Click here to see answer by stanbon(75887)

Question 1040571: if N= 2.37 represents a measurement, then we assume an accuracy of 2.37+or- 0.005, Express the accuracy assumption using an absolute value inequality.
Click here to see answer by stanbon(75887)

Question 1040572: in order to manufacture a polymer for soft drink containers, a chemical reaction must take place within 10�C of 200�C. Write this temperature restriction as an absolute value in equality, then solve to find the acceptable temperature.
Click here to see answer by stanbon(75887)

Question 1040570: If N= 3.65*10^-3 is a number from a measurement, then we assume an accuracy of 3.65*10^-3-or+ 5*10^-6. Express the accuracy assumption using an absolute value inequality.
Click here to see answer by stanbon(75887)

Question 1040761: (2x-5)(3x+2)-(x^2-3x-8)=?
Click here to see answer by Boreal(15235)

Question 1041013: In an isosceles triangle the base angles are equal the vertex angle is 40 degree what are the base angles of the triangle?(remember the sum of three angles of a triangle is 180 degree)

Click here to see answer by jorel555(1290)

Question 1041173: the hypotenuse of a right triangle is 12 inches and the area is 24 square inches. Find the dimension of the triangle, correct to one decimal place.
Click here to see answer by josgarithmetic(39617)

Question 1041245: Insert three Geometric means between 8 and 648.
Click here to see answer by josmiceli(19441)

Question 1041512: A spherical plastic container for designer wristwatches has an inner radius of x centimeters. If the plastic shell is 0.3 centimeters thick, write an algebraic expression interms of x that represents the volume of the plastic used to construct the container. simplify the expression. ( Recall: the volume V of a sphere of radius r is given by V = (4/3)*�*r^3.)
Click here to see answer by Alan3354(69443)

Question 1041509: a cubical container for shipping computer components is formed by coating a metal mold with polystyrene. If the metal mold is a cube with sides x centimeters long and the polystyrene coating is 2 centimeters thick, write an algebraic expression in terms of x that represents the volume of the polystyrene used to construct the container. Simplify the expression. (Recall: The volume V of a cube with sides of length t is given by V = t^3.)
Click here to see answer by Boreal(15235)

Question 1041752: D=c-s/n solve for c

Click here to see answer by Edwin McCravy(20056)

Question 1041790: A vending machine contains dimes and quarters only. There are 4 more dimes than quarters. If x represents the number of quarters, write an algebraic expression in terms of x that represents the value of all the coins in the vending machine in cents. Simplify the expression.
Click here to see answer by stanbon(75887)

Question 1041789: A parking meter contains nickels, dimes, and quarters. There are 5 fewer dimes than nickels, and 2 more quarters than dimes. If x represents the number of nickels, write an algebraic expression in terms of x that represents the value of all the coins in the meter in cents. Simplify the expression.
Click here to see answer by jorel555(1290)

Question 1041788: The length of a rectangle is 8 meters more than its width. if x represent the width of the rectangle, write an algebraic expression in terms of x that represent its area. Change the expression to a form without parentheses.
Click here to see answer by jorel555(1290)

Question 1042001: What is the geometric sequence of -4,-1,-1/4,-1/16

Click here to see answer by ikleyn(52787)

Question 1041986: 3(a-b)=15
4a=b+1
Click here to see answer by Alan3354(69443)

Question 1041787: the width of a rectangle is 5 centimeters less than its length. if x represents the length, write an algebraic expression to a form without parentheses.
Click here to see answer by jorel555(1290)

Question 1042358: I really need help with 2 proofs i would love if someone helped me. thanks!

1. Given: AB ≅ AC
Prove: m∠B > m∠D
2. Prove that there is no regular polygon with an interior angle
whose measure is 145�.

Click here to see answer by Edwin McCravy(20056)

Question 1042450: A photographer has a perimeter of 36 inches. The difference between the photographer length and width is 2 inches.find the the length.and width of the photograph.
Click here to see answer by ikleyn(52787)