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January 30, 2015

Search: The area of a triangle with base b and height h is given by the formula A = ½ bh. Find the area of a triangle when the base is 9.0 cm and the height is 6.2 cm.

Number of results: 100,097

Trigonometry
Okay, Assume the triangle has the given measurements. Solve for the remaining sides and angles. A = pi/6; a = 17.4; b = 19.6
April 27, 2011 by Veronica

geometry
Write a two column proof. Given CE = CA, EB and AD are medians, Prove: EB = AD for a triangle
July 27, 2011 by tiffany

math - trig
Why cant we solve an oblique triangle with the Law of Sines if we are given SAS?
February 10, 2014 by McKenna Louise

College math
the lengths of the legs of a right triangle are given: a=10 b=24 c=____? Thank you so much
March 17, 2014 by Cassandra

Calculus
Evaluate the integral by interpreting it in terms of areas as 0 goes to 12 |2x - 7|dx? This is my work so far: 2x-7=0 x=7/2 slope = 2; y-int = (0, -7) Area of a triangle is 1/2BH.
November 15, 2009 by Z32

object oriented programming 1
write a c++ program that calculates the area of the circle, rectangle, triangle and exits when the user enters the value 0
February 17, 2012 by jackline

geomatry
I need to creat a parallogram,rectangle,square,rhombus,kite and triangle all should have the same area?
March 5, 2012 by manal HELP ME

math
An angry construction worker throws his wrench downward from a height of 128 feet with an initial velocity of 32 feet per second. The height of the wrench above the ground after t seconds is given by S(t)= -16t^2 - 32t + 128. a) What is the height of the wrench after 1 second...
January 3, 2011 by Casey

math
Given: line nm is congruent to qr; angle m and angle r are right angles; line mp is congruent to ro. Prove: triangle nmo is congruent to triangle qrp and angle n is congruent to angle q
October 27, 2010 by angelica

math
Two angles of a triangle have the same measure and the third one is 15 degrees greater than the measure of each of the other two. Find the measure of the LARGEST angle in the triangle.
February 1, 2009 by cindy55

algebra
Annual profit in thousands of dollars is given by the function,p(x)=200square x-3 +10,000,where x is the number of items sold in thousands, x less than 3. describe the meaning of the numbers 3 and 10,000 in the formula. find the profit for 5 different values of x. graph the ...
May 21, 2011 by pamela

math
A water treatment plan is built with three cylindrical tanks to contain the water for a town. Each tank has a radius of 15 feet and a depth of 25 fee. If there are about 7.5 gallons in a cubic foot of water, approximately how many gallons of water can be treated at the plant ...
February 10, 2009 by lucy

Math
A triangle has vertices X(0,0), Y(4,4), and Z (8,-4). a) Write an equation for each of the three medians b) Recall that the centroid of a triangle is the point of intersection of the medians of the triangle. Use the equations from part a) to verify that (4,0) is the centroid ...
October 12, 2007 by Luisa

math
In triangle ABC, angle C is congruent to angle A, line BC=2x-5, line AB=x+5 and line AC=x+10. Find x. The problem didn't have a triangle drawn so i drew it myself. I tried many equations but when i substitute it it didn't work.
November 16, 2008 by mark

help please, up for it?
a rock is thrown vertically upwards with an initial velocity of 30 m/s. Neglecting air resistance, calculate a) the maximum height reached b) the time taken to reach maximum height v1 = 30 m/s v2 = 0 m/s a = negative gravity simple plug n chug to find height (distance) and time
October 7, 2006 by lovable

algebra
How far can you see to the horizon from a mountain top that has a height of 9000 m? Use the formula V= 3.5 sqrt h
April 24, 2012 by Coach

algebra
How far can you see to the horizon from a mountain top that has a height of 9000 m? Use the formula V= 3.5 sqrt h
April 24, 2012 by Coach

math
a daisy is 24 inches tall . the height of a sunflower 3 1/2 times the height of the daisy.find the height of the sunflower umm 20
July 28, 2010 by kamleen

Math using Quadratic equation
The area of a square is 196cm2(squared), find the measure of one side. Thank you,, this is my assign. In math1, im using the formula A=s*s but i need to solve this using quadratic equation.
September 15, 2014 by Jenn

pre-calc
Find an angle between 0 and 2 that is coterminal with the given angle. -8pi/3 A sector of a circle has a central angle of 60. Find the area of the sector if the radius of the circle is 3 mi.
March 17, 2012 by John

Math
I need help with these problems for a test. 1. Find the inverse of the one-to-one function. f(x)=5x+1/4. 2. The height of the water, H, in feet, at a boat dock t hours after 7 am is given by E=7+4.4cos pi/35 t, where t is time measured in seconds. Find the period. 3. Solve the...
June 13, 2010 by David

Perimeter of a triangle
Perimeter of a triangle. The perimeter of the triangle shown in the accompanying figure is 12 meters. Determine the values of x, x + 1, and x + 2 by solving the equation x + (x + 1) + (x + 2) = 12.
December 18, 2009 by Jone

Calculus (urgent!!)
A particle moves with its position given by x=cos(2t) and y=sin(t), where positions are given in feet from the origin and time t is in seconds. A)Find the speed of the particle. Speed = ____________ (include units) B)Find the first positive time when the particle comes to a ...
April 14, 2011 by Catherine

solid geometry
what are the dimensions of a gallon can of uniform square cross section whose height is twice the length of an edge of its base?
January 10, 2012 by jen

Physics
A Chinook Salmon has a maximum underwater speed of 3.58 m/s, but it can jump out of water with a speed of 6.68 m/s. to move upstream past a waterfall, the salmon does not need to jump to the top of the fall, but only to a point in the fall where the water speed is less than 3....
September 24, 2006 by JIll

Math
Find a linear equation whose graph is the straight line with the given property. Through (2, −7) and (1, 1) I got -8x-23, I know it doesn't match, maybe its the wrong formula Find a linear equation whose graph is the straight line with the given property. Through (1/4...
February 16, 2012 by Jane

geometry
You are given a sheet of paper with the following diagram on it. You are also told that the two circles have the same radii and you are given a straight edge. Draw an isosceles triangle. N.B. you do not know where the centre of either circle is, you do not have any measuring ...
April 3, 2014 by lasarith

Geometry
What is the area of a trapezoid with height 5 m and bases 8 m and 1 m?
December 20, 2011 by Ryan

math
height = 15 ft area = 285 ft2
April 9, 2013 by Wyatt

math
A tangram is a geometric puzzle made from seven pieces that form a square. Trace the pieces, cut them out, and answer the following questions. The puzzle can also be seen on wikipedia web site. a. If the area of the entire square equals 1 unit, label each piece with its ...
October 28, 2010 by m

chem: study of kinetics
im supposed to find the slope= -EA/R = triangle y/triangle x = (y2-y1) ________/(x2-x1)____________ how do i do this? is it the same as the slope that excel gave me? i have information from 3 different groups, and i have 3 x's and 3 y's, how do i solve this? the teacher told ...
October 16, 2010 by chem

7th grade masth asap hurry plz ms.sue somebody plz
The area of a circle is found with the formula A = pi r^2, where pi represents 3.14. If a tile artist is placing tiles in a circular mosaic pattern and the area of the circle is 658 square feet, what is the approximate radius of the circle in feet? Can you explain how to do ...
October 8, 2012 by Delilah

Math - Mathematical Induction
3. Prove by induction that∑_(r=1)^n▒〖r(r+4)=1/6 n(n+1)(2n+13)〗. 5. It is given that u_1=1 and u_(n+1)=3u_n+2n-2 where n is a positive integer. Prove, by induction, that u_n=3^n/2-n+1/2. 14. The rth term of a sequence is given by u_r=r(3r+1),r=1,2,3, ...
April 17, 2012 by Iman

Physics
A. You can use any coordinate system you like in order to solve a projectile motion problem. To demonstrate the truth of this statement, consider a ball thrown off the top of a building with a velocity at an angle θ with respect to the horizontal. Let the building be 50.0...
September 9, 2011 by Awonah

trig
A man on a 135 feet cliff perpendicular (at 90 degrees) to the ground looks down at an angle of 16 degrees and sees his friend. How far away is the man from his friend? How far away is the friend from the base of the cliff? Sketch the triangle that matches this scenario with a...
May 12, 2014 by Anonymous

math
A soccer player kicks a ball and gives it an initial upward velocity of 47 feet per second. If everyone waits for the ball to bounce, how long will it be in the air? (Use the vertical motion formula, h= -16tsquared + vt + c, where h is the height of the ball will be at time t...
April 29, 2013 by kelly

physics
Two point charges of the same magnitude but opposite signs are fixed to either end of the base of an isosceles triangle. The electric field at the midpoint M between the charges has a magnitude EM. The field directly above the midpoint at point P has a magnitude EP. The ratio ...
February 14, 2013 by shaun

algebra
Library Assignment When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= -16t^2 + v*t + k gives the height of the ball at any time, t in seconds, where v is the initial velocity (speed) in ft/sec and k is the initial height in feet (as if...
January 18, 2010 by hilda

chemistry
a 5.55g sample of a weak acid with ka=1.3*10^-4 was combined with 5.00ml of 6.00 M NAOH and the resulting solution was diluted to 750mL. The measured pH of the solution was 4.25. what is the molor mass of the weak acid. if used the formula pH=kpa+log(base/acid) Ph=3.89+log(6....
November 25, 2010 by help

chemistry
a 5.55g sample of a weak acid with ka=1.3*10^-4 was combined with 5.00ml of 6.00 M NAOH and the resulting solution was diluted to 750mL. The measured pH of the solution was 4.25. what is the molor mass of the weak acid. if used the formula pH=kpa+log(base/acid) Ph=3.89+log(6....
November 25, 2010 by help

Math (Algebra)
NO answers please!!! Just explain to me how to get the answer! Thank you. The body mass index, I, can be used to determine ans individual's risk for heart disease. An index less than 25 indicates a low risk. The body mass index is given by the formula, or model, I = 700w & H2...
July 4, 2010 by Lynn

Algebra
I need help with two math problems. 1. A triangle has vertices (1, 4), (1, 1), and (-3, 1). The triangle is dilated by a scale factor of 2, then translated 5 units up, and then rotated 90 degrees counterclockwise about the origin. What are the vertices of the image of the ...
May 19, 2013 by Kelly

Physics (vectors)
I am stuck with this question.Please help. I have a triangle that is not a right triangle with sides A, B, and C.(no values).The arrow's heads of A and B are joined and the arrow's head of C is in the tail of B. If the resultant is A,what is the vector equation, and what is ...
February 15, 2013 by Kathy

math
The isoceles triangle represents the roof of a birdfeeder. If each base angle is 40, how many degrees is the angle at the top of the birdfeeder?
August 17, 2012 by Kristle

Math
The ratio of the length of an altitude of an equilateral triangle to its base is A. 1:1 B. 1:2 C. 1:3 D. Square root of 3: Square root of 2 E. None of these
June 5, 2013 by Anonymous

math
make triangles and find the area of those triangles and then add em together. I need to find the area of a polygon,breaking into simpler parts. how do you do it?
April 18, 2007 by jamay

math
how do we find the surface area? top: bottom: right: left: front: back: its still hard when we i find the surface area of a rectanguar prism.
April 20, 2012 by Celest

Math
"Find the area of a rhombus with sides of length 10 in. and longer diagonal of length 16 in." and Also, how do you solve the problem "Find the area of a regular decagon with radius 4 cm."
June 9, 2013 by Celina

math
You are developing a data base for Army tracked combat vehicles and you are normalizing the data base to base year 2006 dollars. What number would you enter into the data base for a vehicle budgeted at $1,725,000 in the FY08 appropriation? $1,604,505 $1,654,754 $1,573,044 $1,...
April 8, 2013 by Shawn

math
Two corresponding sides of similar polygons are in the ratio of 8:7. If the area of the smaller figure is 512 square meters, what is the area of the larger figure? A) 3584 m B) 134,217,728 m C) 392 m D) Not enough information given
October 29, 2009 by jeng

Geography
What is the name given to the vast rural area in the center of the Australian continent? What natural features explain the very sparse population of this area? Please help i'm very confused and all the websites have different info.
September 24, 2013 by Saru

Math
The velocity of an object is given by the formula v=25t-80, where the time is expressed in seconds and the velocity is expressed in feet per second. Find the times when the magnitude of the velocity is equal to 60 ft/s
January 6, 2015 by Alex

Physics repost please check
Good morning. This is a repost. The system is telling me my calculations is incorrect. I thought a fresh pair of eyes would help. Please tell me what I am doing wrong. Suppose a monatomic ideal gas is contained within a vertical cylinder that is fitted with a movable piston. ...
April 20, 2007 by Mary

Calculus
The height in feet above the ground of a ball thrown upwards from the top of a building is given by s=-16t^2 + 160t + 200, where t is the time in seconds. If the maximum height is 600 feet, what is v^-1(32)? The answer is supposed to be 4 seconds, but I don't understand how. ...
March 26, 2014 by Ann

math
1. A baseball diamond is actually a square, 90 feet on each side. What is the distance from third base to first base? 2. The equation gives the distance, D, in miles that a person can see to the horizon from a height, h, in feet. a) Solve this equation for h b) Mammoth ...
August 30, 2010 by summer

math
1. A baseball diamond is actually a square, 90 feet on each side. What is the distance from third base to first base? 2. The equation gives the distance, D, in miles that a person can see to the horizon from a height, h, in feet. a) Solve this equation for h b) Mammoth ...
September 4, 2010 by summer

Physics
How do you find maxium height when a ball is hit from a height of 0.08m and has a intial velocity of +7.5 m/s straight up?
September 3, 2007 by Sara

Math
A rubber ball is dropped from height h. It bounces 27" (60%). Write an equation you can use to find height h
January 29, 2014 by Jeanne

science
A body freely falling from a height h describes 11h/36 in the last second of its fall. Find the height h?
June 30, 2014 by seshu

ALGEBRA
THE LENGTH OF THE RECTANGLE EXCEEDS ITS WIDTH BY 3 CM. IF THE LENGTH AND WIDTH OF EACH INCREASED BY 2 CM, THEN THE AREA OF NEW RECTANGLE WILL BE 70 SQ. CM MORE THAN THAT OF THE GIVEN RECTANGLE. FIND THE LENGTH AND WIDTH OF THE GIVEN RECTANGLE.
July 30, 2014 by TRISHIA

Calculus (urgent!!)
A particle moves with its position given by x=cos(2t) and y=sin(t), where positions are given in feet from the origin and time t is in seconds. A)Find the speed of the particle. Speed = ____________ (include units) B)Find the first positive time when the particle comes to a ...
April 15, 2011 by Catherine

geometry
find the length of ab & bc of a triangle abc having given the length of ac = 28inch, angle abc = 90, angle bac =30,, angle acb = 60
January 4, 2012 by Anonymous

Calculus
The region R is bounded by the x-axis, x = 1, x = 3, and y = 1/x^3 A) Find the area of R B) B. Find the value of h, such that the vertical line x = h divides the region R into two Regions of equal area.
May 6, 2014 by Samantha

PreCalc
y =( (C-A)/2 ) sin( (X - (A - ( (C - A)/2 ) ) )( pi/(C-A) ) ) + (B - ( (B-D)/2 ) How do I rearange this for this equation for the all of the variables including A, B, C, D, X were pi is the greek leter pi if you didn't notice this is the general formula for when you are given ...
December 7, 2009 by Jo

Physics
The gauge pressure at the bottom of a vertical tube (open to the atmosphere) filled with mecury is 100kPa. How high is the column of mecury in the tube? I used the formula pressure=density * gravity * height which i reaaranged to find h= 100000Pa/(13570kg/m3*9.8)=0.75m but ...
June 15, 2011 by Katie

math
The physical education teacher marked off a triangular section of the gym to play a game. Two of the triangle's sides were 7 feet and 9 feet respectively. If the perimeter of the triangle is 22 feet, what is the measure of the triangle's third side?
June 17, 2013 by Anonymous

maths PLEASE HELP
how to work out partial fraction decomposition when given 1/x(x^2+1) and 2x-1/(x+4)(x-3) if you could give me an idea of the formula and what changes i need to make to the formula when the denominator changes that would help and please use idiot speak because the text books ...
October 25, 2009 by michelle

Review of Logs
I can't seem to get the answer to this; the answer key says log(base 8)6 Write as a single logarithm log(base 8)42log(base 8)3 - log(base 8) 6 I'm hoping the key is wrong :) Thank you for your help!
September 24, 2007 by Nelson

Pre-calc
Please explain. I want to understand the steps. 1. A frog jumps from a rock to the shore of a pond. Its path is given by the equation y=(-5/72)x^2+(5/3)x, where x is the horizontal distance in inches, and y is the height in inches. What is the frog's maximum height? How far ...
July 13, 2010 by Laly

Maths
Calculate the volume and curved surface area of a cone 14cm in base diameter and 24cm high
October 26, 2011 by Vivian

Math: PreCal: Triangles
An isosceles triangle is inscribed in a circle. The shortest side is the base which is 16 cm long. If the radius of the circle is 10 cm, what is the length of side "a"?
March 28, 2012 by Joey

Math
Jim wants to plant pansies in his new planter. How much potting soil should Jim buy? Round to the nearest centimeter. Hint: The height is 100 cm and the diameter is 40 cm. My teacher said to use a specific formula. Out of that formula I got 125,664, but I do not know how to ...
October 11, 2013 by Monica

Calculus
When Pal throws his beach ball straight up in the air, it's height h at time tis given by h=(-1/2)gt^2+v(sub 0). Find the velocity of the ball at time t.
August 3, 2011 by Jordan

geometry
Two rectangles are similar. If the height of the first rectangle is 3 inches, and the height if the second rectangle is 9 inches, how much larger is the second rectangle's area?
July 23, 2014 by Jo

geometry
Assume triangle JKL is in the first quadrant, with the measure of angle K = 90. Suppose triangle JKL is a 30-60-90 triangle and segment JK is the side opposite the 60 angle. What are the approximate coordinates of point L? j(2,7) k(2,2) a(4.9,2) b(4.5,2) c(7.1,2) d(8.7,2)
February 22, 2012 by steve

Chemistry
What is the empirical formula for aluminium selenide? What is the common oxidation state of aluminum? Combine that information with the valency for selenium that you came up with in the previous question to come up with the formula for aluminum selenide. If your are being ...
February 19, 2007 by sarah

Calculus (Help please)
A tank has the shape of an inverted circular cone with a base radius of 5 meters and a height of 20 meters. If water is being pumped into the tank at 2 cubic meters per minute, find the rate at which the water level is rising when the water is 7 meters deep
January 9, 2012 by Jordan

Math (Calculus)
A tank has the shape of an inverted circular cone with a base radius of 5 meters and a height of 20 meters. If water is being pumped into the tank at 2 cubic meters per minute, find the rate at which the water level is rising when the water is 7 meters deep
January 9, 2012 by Jordan

Math (Calculus)
A tank has the shape of an inverted circular cone with a base radius of 5 meters and a height of 20 meters. If water is being pumped into the tank at 2 cubic meters per minute, find the rate at which the water level is rising when the water is 7 meters deep
January 9, 2012 by Jordan

geometry
Triangle NQP is an equilateral triangle with the measure of angle N=5x-2y and the measure of angle P=x+2y. Find the values of x and y.
November 7, 2008 by Hannah

math
find tan 30 degrees and tan 45 degrees using the 45-45-90 triangle therom and 30-60-90 triangle theorm
March 25, 2013 by joan

Calc-Sequence
Find a formula for 1/2, -1/4, 1/6, -1/8, 1/10... So I know that the sequence is just adding 2 to the bottom but i dont know how to write it with a formula including n's..im stuck
April 21, 2008 by Paul

Centroids and Triangles - determining perimeter?
Let G denote the centroid of triangle ABC. If triangle ABG is equilateral with side length 2, then determine the perimeter of triangle ABC. I drew the diagram, but it doesn't really help....
March 27, 2013 by Knights

Algebra 2( it's a tough one!)
Jose needs to enclose a rectangular section of his yard. The area is 35 sq. ft. and the perimeter is 27 sq. ft. Find the length and width of the section. let l be the length, and w be the width in feet. so 2l+2w=27 --->l+w=13.5 ----> w=13.5-l secondly lw=35 l(13.5-l)=35 ...
May 3, 2007 by Christian

math
Neglecting wind resistance,the height,h,in feet, of a sky diver,t,seconds after she junps from an airplane 1,648 above the ground is given by the formula h=-16ft square +1648. If a parachute opens 4.5 seconds after a sky diver leaves the airplane,about how far will she be from...
October 12, 2010 by Alexandria

chemistry
Give the formula for the conjugate base of each acid. a. HSO4- SO4^2- b. H3PO4 H3PO4 c. HPO42- PO4^2- d. HNO3 NO3^-
February 26, 2012 by krystal

maths
A tree stands vertically on a hill side which makes an angle of 15 degree with the horizontal. From a point on the ground 35 meter down the hill from the base of the tree, the angle of elevation of the top of the tree is 60 degree. find the height of the tree.
September 16, 2012 by Geeta negi

Math
The velocity of an object is given by the formula v=25t-80, where the time is expressed in seconds and the velocity is expressed in feet per second. Find the times when the magnitude of the velocity is equal to 60 ft/s. (3 marks)
January 12, 2015 by Alex

algebra
please bear with me. i'am 58 years old and decided i wanna get my high school on line. my question is. convert the base 10 numeral in the base indicate 504 to base 10, and can i work this problem. so that i can come up with the correct answer.
May 24, 2012 by shirley

physics help!!!
How do you find the speed of sound wave using the formula for speed when you have 195 Hz 89.4m in 0.311s. Help what formula to use what's the answer???
February 7, 2012 by lili-chan

chemistry
A compound with a formula mass of 42.08 amu is found to be 85.64% carbon and 14.36 % hydrogen by mass. find its molecular formula.
January 12, 2011 by Nick C

Geometry
1. An airplane is flying at 36,000 feet directly above Lincoln, Nebraska. A little later the plane is flying at 28,000 feet directly above Des Moines, Iowa, which is 160 miles from Lincoln. A.assuming a CONSTANT rate of descent, what was the angle of descent? B. What is the ...
March 26, 2012 by Leah

math
Throwing a Wrench. An angry construction worker throws his wrench downward from a height of 128 feet with an initial velocity of 32 feet per second. The height of the wrench above the ground after t seconds is given by S(t)=-16t^2-32t+128. a) What is the height of the wrench ...
March 5, 2009 by Debbie

Math
Find the shaded area in the following figure if the rectangle inscribed in the circle has dimensions 3 ft x 4 ft. I know I find the area of the rectangle A=l*w, but what do I do next?
December 16, 2009 by Punkie

Geometry
One side of a triangle is x inches longer than another side. The ray bisecting the angle formed by these sides divides the opposite side into 3- inch and 5-inch segments. Find the perimeter of the triangle in terms of x.
January 13, 2012 by Anonymous

Math
I need help with these problems for a test. 1. Find the inverse of the one-to-one function. f(x)=5x+1/4. 2. The height of the water, H, in feet, at a boat dock t hours after 7 am is given by E=7+4.4cos pi/35 t, where t is time measured in seconds. Find the period. 3. Solve ...
June 14, 2010 by David

Algebra
The equation r = (sqrt A)/(pi) gives the radius r of circle with area A. What is the radius of a circle with the given area? Write your answer as a simplified radical and as a decimal rounded to the nearest hundredth. a. 50 ft^2
April 25, 2014 by Anonymous

math
a rectangle is to be inscribed under the arch of the curve y = 2cosx from x=-pi to x=pi. What is the length of the base of the rectangle with maximum area? can someone help me with this....i have a lot of problems to do just like this but i dont understand them. can someone ...
December 9, 2009 by kelli

Geometry
The volume of an oblique cone with equal diameter and height is 18pi cm^3. Find the height and radius(to the nearest cm).
May 21, 2012 by Anna

math
a ball is dropped from a height of 3 meters. It bounces to 2/3 of the height from which it fell at each boune.find distance travelled
September 4, 2014 by Anonymous

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