A chemical engineer designed a 625 ft long tailings channel to have a rhombus crosssection that is 9.5 ft deep, with walls sloping at an acute angle of 44„a. A contractor placed a bid to excavate the canal at $195/cubic
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maths
A chemical engineer designed a 625 ft long tailings channel to have a rhombus crosssection that is 9.5 ft deep, with walls sloping at an acute angle of 44„a. A contractor placed a bid to excavate the canal at $195/cubic yard plus 20% profit. What was the bid? 
Geometry
An engineer designed a 620 ft long water canal to drain a rainwater detention pond. It is to have a trapezoid crosssection that is 8 ft deep, 15 ft across the bottom, with walls sloping outward at an angle of 40. (a)Calculate the volume of earth that needs to be ... 
Math
An engineerâ€™s plan shows a canal with a trapezoidal cross section that is 8 ft deep and 14 ft across at the bottom with walls sloping outward at an angle of 45°. The canal is 620 ft long. A contractor bidding on the job estimates the cost to excavate the canal at $175/... 
Math
Tangent of an acute angle of a rhombus is 3⁄4, whereas its side is 10 cm long. Find an area of the rhombus. 
Help me
11. Name the triangles that are classified by angles. right, scalene, isosceles scalene, isosceles, equilateral acute, right, obtuse obtuse, isosceles, acute 12. Classify the triangle by side length and angle measurement. scalene, acute isosceles, acute scalene, right ... 
Angle question
Quadrilateral JKLM is a rhombus. If mangleLMK = 36, find mangleKJM In the right triangle ABC, mangleB = 90, AB = 5, and AC= 12. Find BC. Round to the nearest tenth, if necessary. Help? Is AB a side and AC a side? I can't tell from your description which are sides and which is ... 
physics
TVreception antennas for VHF (channels 2 through 13) are constructed with cross wires supported at their centers, as shown in Figure 23.24. The ideal length for the cross wires is onehalf the wavelength to be received, with the more expensive antennas having one for each ... 
Physics
A roller coaster goes 40m along a section of track sloping 10 degrees below the horizontal, followed by a 13m section sloping upward at 6 degrees, followed by an 26m section of level track. Find the net displacement in m. 
Project Mangament
I am doing on a project on Building Home Depot. how would I go to found the cost, construction engineer, roofing contractor, plumbing contractor, HVAC contractor, steel erection and electric contractor. Install temporary power,set up site office, stone site parking area, ... 
Help with deductive reasoning
Determine whether you can use the Law of Syllogism to reach a valid conclusion from each set of statements. 1. If a dog eats Superdog Dog Food, he will be happy. Rover is happy. 2. If an angle is supplementary to an obtuse angle, then it is acute. If an angle is acute, then ... 
Diff Calculus
a swimming pool is 5m wide, 10m long, 1m deep at the shallow end, and 3 m deep at its deepest point. a cross section is shown in the figure. if the pool is being filled at a rate of 0.1 m3/min, how fast is the water level rising when the depth at the deepest point is 1m? 
7th grade math please help Ms. Sue
9. Name the triangles that are classified by angles. (1 point) right, scalene, isosceles scalene, isosceles, equilateral acute, right, obtuse obtuse, isosceles, acute 11. Name the quadrilaterals that have four equal sides. (1 point) rhombus, square square, rectangle ... 
geometry
Rhombus RHOM with acute angle H 
spc
a long strip of sheet metal 12 inches wide is to be formed into an open gutter with a rectangular crosssection as shown. what is the maximum possible area of the crosssection? 
calculus
s=4.9t²+245t+14.7 s=4.9(t²245/4.9t)+14.7 s=4.9(t²50t)+14.7 s=4.9(t²50+625625)+14.7 s=4.9(t²50+625)+(4.9)(625)+14.7 s=4.9(t25)²+30625.5+14.17 s=4.9(t25)²+3077.2 as you can see on the process of the problem on the part that says...s=4.9(t²50+625625)+14... 
Trigonometry
A leanto is a simple shelter with three walls, a sloping roof, and an open front facing away from the prevailing winds. The back wall is short compared to the front opening. If the leanto at a campsite has a front opening that is 7.0 ft tall, a back wall that is 2.0 ft tall... 
Maths
the acute angles of a rhombus are 76 degrees if the shorter diagonal is of length 8 cm calculate of the sides of the rhombus to the nearest mm 
maths
in a rhombus ring pattern, each rhombus in the last ring has an angle of 20 dgerees and each rhombus in the second last ring has an angle of 60 degrees. What are the angles in each rhombus in the 3rd last ring? How many rhombuses are there in the first ring and how many ring ... 
ALGEBRA 1
If x and 3x10 represent the measure of the acute angles of a right tringle find the value of x. THANKS Let's take it step by step. A triangle has 3 angles in it. Those three angles, when added together, is 180. In a right triangle, one of the angles is 90 degrees. The other ... 
Calculus (Cross Section) again
A half of a pepperoni stick is 10 cm long. Assume that a cross section perpendicular to the axis of the pepperoni at a distance x from the end if a circle of radius rad(3x). What is the volume of the pepperoni 
Geometry
Name the angle that is supplementary to <COD a.<COA B.<BOC C.<COB D.<BOA Classify the triangle with angles with the measures 33,90, and 57 as acute, right, or obtuse a.Acute b.Right c.Obtuse Sandra is making the shape of a rhombus the first three angles are 75, ... 
science
1. Which gas is a source of natural groundwater pollution? A. Carbon B. Oxygen C. Hydrogen D. Radon d? 2. A stream channel is formed when water A. carves a very deep and wide channel into rock. B. carries minerals into the ocean. C. creates a depression, which forms a lake. D... 
math
The shorter diagonal of a rhombus is 10 inches long, and the angle the diagonal forms with the side measures 60º. Find the area of the rhombus. I really don't know where to start. I know that the area formula for a rhombus is A=1/2*d1*d2 So if I know that one of the D is 10, ... 
EARTH SCIENCE
1. Which gas is a source of natural groundwater pollution? A. Carbon B. Oxygen C. Hydrogen D. Radon D? 4. A stream channel is formed when water A. carves a very deep and wide channel into rock. B. carries minerals into the ocean. C. creates a depression, which forms a lake. D... 
EARTH SCIENCE
1. Which gas is a source of natural groundwater pollution? A. Carbon B. Oxygen C. Hydrogen D. Radon D? 2. A stream channel is formed when water A. carves a very deep and wide channel into rock. B. carries minerals into the ocean. C. creates a depression, which forms a lake. D... 
calculus
The crosssection of a drain is a trapezoid. The sides and the bottom of the trapezoid each have a length of 10 feet. Determine the angle θ such that the drain will have maximal crosssectional area. 
math
a cross section of a basement is shaped like a trapaziod. it has an area of 37.4 square meters, one base is 6.4 meters and the other base is 12.3 meters long. what is the height of the cross section? is it 18.7 or 2? or am i wrong? 
math
a cross section of a basement is shaped like a trapaziod. it has an area of 37.4 square meters, one base is 6.4 meters and the other base is 12.3 meters long. what is the height of the cross section? is it 18.7 or 2? or am i wrong? 
science
water flows steadily through a horizontal pipe of non uniform cross section. if the pressure of water is 4*10^4 N/m^2 at a point where the velocity of flow is 2ms^1 and cross section is 0.02 m^2 what is the pressure at a point where cross section reduces to 0.01m^2? 
BC Calculus
Fluid is flowing in a tube that has a radius of 3 centimeters. Water is flowing through a circular cross section at a rate of (9r^2) cm/s, where r is the distance from the center of the cross section. What is the total amount of water that flows through the cross section in 4... 
Integrals/Related Rates(?)/Volume
Fluid is flowing in a tube that has a radius of 3 centimeters. Water is flowing through a circular cross section at a rate of (9r^2) cm/s, where r is the distance from the center of the cross section. What is the total amount of water that flows through the cross section in 4... 
math
fedrick ordered a new sign for her store. The sign has 4 sides . It also has 2 right angles. 1 acute angle , and 1 obtuse angle . What is the shape of the sign. 1. Hexagon 2. Trapezoid 3. rhombus 4. parallelogram 
physics
A liquid is under stream lined motion through a horizontal pipe of non uniform cross section of the volume rate of flow at cross section a is v the volume rate of flow at cross section a/2 is Ans:V 
Math
the larger angles of a rhombus are twice the smaller angle of the rhombus. if the shorter diagonal is 20, find the perimeter of the rhombus 
Math
The larger angles of a rhombus are twice the smaller angle of the rhombus. If the shorter diagonal is 20, find the perimeter of the rhombus. 
Maths
The size of a parcel despatched through the post used to be limited by the fact that the sum of its length and girth (perimeter of the cross section) must not exceed 6 feet. What was the volume of the largest parcel of square cross section which was acceptable for posting? (... 
Maths
The size of a parcel despatched through the post used to be limited by the fact that the sum of its length and girth (perimeter of the cross section) must not exceed 6 feet. What was the volume of the largest parcel of square cross section which was acceptable for posting? (... 
Calculus
The size of a parcel despatched through the post used to be limited by the fact that the sum of its length and girth (perimeter of the cross section) must not exceed 6 feet. What was the volume of the largest parcel of square cross section which was acceptable for posting? (... 
Math
What is the area of a rhombus with: Side=8 cm Acute angle between one pair of sides=30 degrees Please don't use trigonometry as I'm in Class 7. Thanks in advance. 
math
Develop a unit of learning at the end of which learners should be able to: reduce any angle in the first quadrant of a Cartesian plane to a difference of 90 and an acute angle. I have tried it as follows: 1. write down any three acute angles. 2. draw the angles in a Cartesian ... 
engineering
During drilling of a deep oil well, the drill pipe got rigidly stuck. It was necessary to determine the depth at which the jamming occurred. The engineer ordered the pipe subjected to a large upwards tensile force, i.e., she pulled on it. As a result, the top of the pipe came ... 
bvm
one of the angle of rhombus is 65°. what will b the sum of larger angle and twice the smaller angle of the rhombus? 
maths
A large canal will have a crosssection in the shape of an isosceles trapezoid. The top will be twice as wide as the bottom, and the depth will be 8.00 m. Because of the cost of the building materials, the bottom and two slopes sides are to measure 14.0 m altogether. What is ... 
Math
I need the following definitions Please: point line intersecting lines parallel lines vertical lines horizontal lines acute angle obtuse angle right angle square rectangle trapezoid rhombus pentagon hexagon octagon triangle circle chord radius diameter cube rectangular prism ... 
Calculus
A rectangular swimming pool is 8 m wide and 20 m long. Its bottom is a sloping plane, the depth increasing from 1 m at the shallow end to 3 m at the deep end. Water is draining out of the pool at a rate of 1 m3/min. How fast is the surface of the water falling when the depth ... 
PHYSICS!!!
A liquid (ñ = 1.65 g/cm3) flows through a horizontal pipe of varying cross section as in the figure below. In the first section, the crosssectional area is 10.0 cm2, the flow speed is 288 cm/s, and the pressure is 1.20 105 Pa. In the second section, the crosssectional area ... 
Health Information Technology
I have to create an acute care record and am looking for blank medical templates. The list below is what I need Face Sheet; Registration Form; Doctors Order Form w/orders to include admission, treatment plan, medications; nurses note section; laboratory section; radiology ... 
method of teaching maths
1. Develop a unit of learning at the end of which learners should be able to: • reduce any angle in the first quadrant of a Cartesian plane to a difference of and an acute angle, • reduce any angle in the second quadrant of a Cartesian plane to a sum of and an acute angle... 
MathPlease Help
The arch is made up of equilateral triangular sections with double walls of steel 3 feet apart. Space between the walls is filled with reinforced concrete. Sizes of the sections vary, but a section at the bottom of the Arch has 54foot sides and is 12 feet tall. About how much... 
physics
The diffusion rate for a solute is 4.0E11 kg/s in a solventfilled channel that has a crosssectional area of 0.50 cm^2 and a length of 0.220 cm. What would be the diffusion rate m/t in a channel with a crosssectional area of 0.30 cm^2 and a length of 0.10 cm? m/t= ??E11 kg... 
physics
A 58 kg skier has a speed of 9.5 m/s at point A. She then encounters a 1.75 m deep dip in the snow's surface that has a circular cross section with a radius of curvature of 12 m. 
physics
Consider two straight bars of uniform cross section made of the same material. Bar 1 has an axial length of and a square cross section with side length . Bar 2 has an axial length of and a round cross section with diameter. When subjected to axial tension, bar 1 elongates by... 
Math. HELP!
A cylinder is to be made of circular crosssection with a specified volume. Prove that if the surface area is to be a minimum, then the height of the cylinder must be equal to the diameter of the crosssection of the cylinder. Maybe it's the wording, but I have not been able ... 
Math
A cylinder is to be made of circular crosssection with a specified volume. Prove that if the surface area is to be a minimum, then the height of the cylinder must be equal to the diameter of the crosssection of the cylinder. Maybe it's the wording, but I have not been able ... 
Math. HELP!
A cylinder is to be made of circular crosssection with a specified volume. Prove that if the surface area is to be a minimum, then the height of the cylinder must be equal to the diameter of the crosssection of the cylinder. Maybe it's the wording, but I have not been able ... 
Math. HELP!
A cylinder is to be made of circular crosssection with a specified volume. Prove that if the surface area is to be a minimum, then the height of the cylinder must be equal to the diameter of the crosssection of the cylinder. Maybe it's the wording, but I have not been able ... 
Geometry
A cylinder is sliced such that the cross section is perpendicular to its bases. What is the shape of the cross section? A: trapezoid (I think it's this one) B: triangle C: Circle D: Rectangle 
Calculus
A water trough is 9 m long and has a crosssection in the shape of an isosceles trapezoid that is 40 cm wide at the bottom, 80 cm wide at the top, and has height 40 cm. If the trough is being filled with water at the rate of 0.3 m3/min how fast is the water level rising when ... 
math
The Fred Hartman Bridge allows Texas State Road 146 to cross the Houston ship channel. The bridge is 0.237 mile long. How many feet long is the bridge? 
math
Each side of a rhombus is 5 inches long and the shorter diagonal is 4 inches. Find the angle of the rhombus and the longer diagonal. 
Calculus Help Please!!!
A water trough is 5 m long and has a crosssection in the shape of an isosceles trapezoid that is 30 cm wide at the bottom, 70 cm wide at the top, and has height 40 cm. If the trough is being filled with water at the rate of 0.1 m3/min how fast is the water level rising when ... 
calc
A water trough is 7 m long and has a crosssection in the shape of an isosceles trapezoid that is 40 cm wide at the bottom, 100 cm wide at the top, and has height 60 cm. If the trough is being filled with water at the rate of 0.3 m3/min how fast is the water level rising when ... 
Differential Calculus
A water trough is 10 m long and a cross section has the shape of an isosceles trapezoid that is 30 cm wide at the bottom, 80 cm wide at the top, and has height 50 cm. If trough is being filled with water at the rate of 0.2 m^3/min how fast is the water level rising when the ... 
Calculus
A water trough is 6 m long, and its crosssection has the shape of an isosceles trapezoid that is 20 cm wide at the bottom, 50 cm wide at the top and 40 cm high. If the trough is being filled with water at the rate of 0.2 cubic meters/min, how fast is the water level rising ... 
Careers
I want to become a Construction engineer when I am older. In class I have to make a presentation about wanting to become a Construction Engineer, the only thing I can't find is how long you have to go to college to be able to do this work. Can you help me? 
Math
The measure of one acute angle of a right triangle is twelve more than three times the measure than the other acute angle. Find the measure of each acute angle of the right triangle. 
aeronautic
A small wind tunnel is being built for studying insect flight. The first test section built has a uniform height h=0.1m and length ℓ=1m. During operation its walls are found to have boundary layers which effectively start at the inlet at x=0 (the BL growth is negligible ... 
Calculus
A water trough is 5 m long and has a crosssection in the shape of an isosceles trapezoid that is 30 cm wide at the bottom, 70 cm wide at the top, and has height 40 cm. If the trough is being filled with water at the rate of 0.2 m3/min how fast is the water level rising when ... 
CALCULUS
1. A rectangular package to be sent by a postal service can have a maximum combined length and girth (perimeter of a cross section) of 108 inches. Find the dimensions of the package of maximum volume that can be sent. (Assume the cross section is square.) 
Calc
A rectangular package to be sent by a postal service can have a maximum combined length and girth (perimeter of a cross section) of 90 inches (see figure). Find the dimensions of the package of maximum volume that can be sent. (Assume the cross section is square.) 
Calculus
By finding the slopes of the tangent lines to the curve of y=(1/3)x^3+5x at the points where x=3 and x=6, find the acute angle between these lines at the point where they cross. I don't have any idea where to start. An explanation would be appreciated. Please and thanks. 
Math
5. if m <4 = 105° then what is the m<8 105 75 175 25 10.Classify the triangle by side length and angle measurement. equilateral, abtuse isosceles, acute scalene, acute scalene,right 11. name the quadrilateral with exatly one pair of parallel sides? kite parallelogram ... 
geometry
the sum of the measures of an obtuse angle and acute angle is 12 degrees.the complement of the acute angle and onehalf the suplement of the obtuse angle is 75 degree.find the measures of the two angles. 
trig
right triangle has an acute angle of 24.8 and an adjacent length of 145 what is the side opposite of the acute angle 
Math
I really need a math dictionary... I need the following definitions Please: point line intersecting lines parallel lines vertical lines horizontal lines acute angle obtuse angle right angle square rectangle trapezoid rhombus pentagon hexagon octagon triangle circle chord ... 
MATH
Erika spent 5/6 hr on her computer visiting the history channel and the discovery channel websites. She spent 1/5 hr at the history channel website. How many hours did she spend at the discovery channel website? please help I have no idea where to begin 
MATH
1.Isoscles obtuse triangle TRI with vertex angle T. 2.Rhombus RHOM with acute <H and the shorter diagonal. 3.Scalene right triangle SCA with midpointsL<M and N on SC, CA, and SA, respecitively. 4.Trapeoziod TRAP with TR A[, RE PA and P,E and A collinear 5.KIte KITE ... 
PHYSICS !!!
The diffusion rate for a solute is 4.0 1011 kg/s in a solventfilled channel that has a crosssectional area of 0.50 cm2 and a length of 0.220 cm. What would be the diffusion rate m/t in a channel with a crosssectional area of 0.30 cm2 and a length of 0.10 cm? 
Math
The acute angles of a right angle triangle are in the ratio 4:5,then find the acute angle. 
psuchics
Reaction at support and internal axial force resultant Consider two straight bars of uniform cross section made of the same material. Bar 1 has an axial length 1m of and a square cross section 1mm with side length . Bar 2 has an axial length of 3 m and a round cross section ... 
Physic
Reaction at support and internal axial force resultant Consider two straight bars of uniform cross section made of the same material. Bar 1 has an axial length 1m of and a square cross section 1mm with side length . Bar 2 has an axial length of 3 m and a round cross section ... 
Math
What type of angle do construction workers use when building to make sure the walls and floors of a building are perpendicular? A. acute B. obtuse C. right D. straight*** I think it is D 
Physics
Skydiver Joseph Kittinger, record for the longest jump, reaches a terminal speed of 60m/s with his arms and body fully extended. Then, he switches to a head first dive, reducing his cross section area by 80% (that is, his cross section area when headfirst is only 20% of his ... 
8th grade math
13. Name the quadrilaterals that have four equal angles. A. rhombus, square B. square, rectangle C. parallelogram, rhombus D. rhombus, trapezoid 14. what is the sum of the interior angles of a hexagon? A. 180 B. 360 C. 540 D. 720 15. What is the value of the missing angle? two... 
Geometry rhombus variable question
In the rhombus, m<1=18x m<2=x+y m<3=30z Find the value of the variables X,Y, and Z. {angle 1 is on bottom right, angle 2 is on bottom left, on the upper half is angle three on the left. the figure is shaped like a wide diamond} Thank You ^0^ It means alot! 
maths
rhombus ABCD is similar to rhombus BFDE. The area of rhombus ABCD is 24,and angle BAD=60degreees.what is the area of rhombus BFDE? 
maths
Rhombus ABCD is similar to rhombus BFDE. The area of rhombus ABCD is 24,and angle BAD=60 degrees. What is the area of rhombus BFDE? 
maths
Rhombus ABCD is similar to rhombus BFDE.The area of rhombus ABCD is 24 and angle BAD=60 degrees .What is the area of rhombus BFDE? 
math
the main trunk of a tree is in the shape of a cylinder. The distance around its cross section is 47.1cm and its height is 0.7m. What is the radius of the cross section? I know i have the height and circumference, would i divide the circumference by 4 to get the radius? how ... 
EARTH SCIENCE
1. Which gas is a source of natural groundwater pollution? A. Carbon B. Oxygen C. Hydrogen D. Radon C? 2. Which of the following statements best describes chemical weathering? A. It happens only in cool environments. B. It's the type of weathering in which rocks and minerals ... 
Differential calculus
A gutter with trapezoidal cross section is to be made from a long sheet of tin 8 in wide by turning up one third of its width on each side , what width a cross the top that will give a maximum capacity 
math(advanced algebra&trigonometry)
The Vietnam Veterans Memorial in Washington, D.C., is made up of two walls, each 246.75 feet long, that meet at an angle of 125.2°. Find, to the nearest foot, the distance between the ends of the walls that do not meet. 
Chemstry
A 4.1089 g piece of aluminum wire with a circular cross section is 42.06 cm long and has density of 2.6989 g/cm3. What is the volume of the wire and the cross sectional area of the wire in cm2? 
Producing
well ya i have a question I left my notes @ school I need to know what quality is most pleasing to the ear when recording audio. I'm using a half decent studio here were I have to following options 2 channel, 16 bit, 44100 Hz (CD Quality) 2 Channel, 16 bit, 48000 Hz (DVD ... 
calculus
the cross section of a 5ft long trough is an isosceles trapezoid with a 2 foot lower base, a 3foot upper base, and an altitude of 2 feet. water is running into the trough at a rate of 1 cubic foot per minute. how fast is the water level rising when the water is 1 foot deep? 
Trigonometry
a diagram shows a cross section of a triangular prism. AB=BC=7cm. BM=5cm m is the midpoint of the line segment AC. a) explain why angle AMB must be a right angle. b) calculate angle BCM. c) calculate area of the triangle 
Math
Use the figure to answer the following questions. figure for questions 1–3 1. Name a pair of complementary angles. (1 point) angle sign1 and angle sign4 angle sign1 and angle sign2 angle sign3 and angle sign4 angle sign1 and angle sign6 2. If mangle sign1 = 37°, what is the... 
Math
Use the figure to answer the following questions. figure for questions 1–3 1. Name a pair of complementary angles. (1 point) angle sign1 and angle sign4 angle sign1 and angle sign2 angle sign3 and angle sign4 angle sign1 and angle sign6 2. If mangle sign1 = 37°, what is the... 
prealgebra
Use the figure to answer the following questions. figure for questions 1–3 1. Name a pair of complementary angles. (1 point) angle sign1 and angle sign4 angle sign1 and angle sign2 angle sign3 and angle sign4 angle sign1 and angle sign6 2. If mangle sign1 = 37°, what is the... 
MATH
Use the figure to answer the following questions. figure for questions 1–3 1. Name a pair of complementary angles. (1 point) angle sign1 and angle sign4 angle sign1 and angle sign2 angle sign3 and angle sign4 angle sign1 and angle sign6 2. If mangle sign1 = 37°, what is the...