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What is the perimeter of a rhombus-shaped highway sign with a 20-centimeter side?

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Geometry
Find the perimeter of a region bounded on three sides by a rectangle with a base of 600 ft and a height of 800 ft and bounded above by a semicircle with a radius of 300 ft. Use the approximation π = 3.14. (Do not include the lower half of the semicircle in the perimeter)

Calculus
An ice cube is melting such that the side of the cube is decreasing at the rate of 1/4 t^2 cm / min. It is given that the side of the cube is 8cm at the start of the experiment. Calculate the length of the side of the cube when t = 4? ( answer 2 2/3 cm)

calculus
The base of a triangle is on the x-axis, one side lies along the line y=3x, and the third side passes through the point (1,1). What is the slope of the third side if the area of the triangle is to be a minimum.

To DrBob222
The math symbols are very easy to make, although they are not very user-friendly. Basically, we can type the & sign, immediately followed by a # sign and then the unicode number in decimal (as opposed to hexadecimal), and terminated with a ;. For example, the not-equal sign's ...

Math
A norman window is constructed by adjoining a semicircle to the top of an ordinary rectangular window. Find the dimensions of a Norman window with maximum area if the total perimeter is 16 feet. X = the width of the rectangle. Y = the length of the rectangle. X/2 = the radius ...

Electromagnetic Iduction
Neon sign require about 12,000 V for their operation. What should be the ratio of the number of loops in the secondary to the number of loops in the primary for a neon-sign transformer that operates off 120 V lines? Nprimary/Nsecondary= Primaryvoltage/secondaryvoltage solve ...

Math
The figure below are similar (their rectangles) find The value of x. Skinny rectangle has 2 on the top, and it has 4 on the side. Bigger rectangle it's side ways, it has 8 on the top and x on the side

5th grade math
Kallisto built a rectangular sign that measured 2 3/4 feet in length by 1 1/2 feet in width. To find the area, multiply the length and width. what is the area of the sign in square feet? Write an equation to solve. 2 3/4 1 1/2 +2 3/4 1 1/2 =11/1/2 ------ ----- 4 6/4= 2 2/2=3

Geometry
The perimeter of a rectangle is 76 feet. If the width is doubled and the length is halved, the new rectangle will have a perimeter of 62 feet. Find the dimensions of the original rectangle. Define your variables.

socials
when was our new constitution act signed? who sign it? this was like around 1980's. It be signed on april 17th 1982. and it be signed by queen elizabeth. i don't know if i mention trudeau. and who not sign this new constitution act? that be levesque i think.

algebra
suppose the length of a rectangle increases,but the perimeter remains at 70 feet. How does the width change? Either the width increases, decreases or remains the same. Which of these three choices makes the most intuitive sense? We know perimeter = 2(length +width) If ...

Math
In my schoolwork, they want me to find out the perimeter of a rectangle. I found out that the sides of the triangle was 3 forths of an inch and the top was 3 inches. I forgot how to find out the perimeter and the area. Could you please help?

Math
A fence to a rectangular enclosure has a width w, which Is (5m) shorter than its length. (A).write down an expression for the perimeter of the enclosure. (B).if the perimeter is not to exceed (150m), find the maximum possible width of the enclosure.

Math
2x^2+9x-5 is the area of a rectangle and one side of the rectangle is x+5, What is the other side of the rectangle? A volume of a cube is 15625cm cubed. What is the length from point A to B in the cube? Point A is on the front bottom right corner and point B is on the the ...

chemistry
if an acid spilled on a highway, what should be done to clean up the spill?

Algebra 1 HELP!!
4n=28n-3 i have to solve for n Move the letters to one side and the numbers to the other. Change sign when doing so. 4n-28n=-3 Combine terms. -24n=-3 Multiply everything by -1 24n=3 Now divide both sides by 24 24n/24 = 3/24 n=1/8 I hope this helps. What would be the missing ...

math
One sign blinks every 9 seconds. The other sign blinks every 15 seconds. In how many seconds will they blink together again

Geometry
1. What is the base and the height of the rectangle if the area is 216 and the perimeter is 66? 2.The perimeter of an isosceles trapezoid is 40 ft. Thr bases of the trapezoid are 11ft and 19 ft. Find the area of the trapezoid.

algebra
a student measures the height of a sign to be 2 meters. the shadow of the sign 3 meters. the student notices that at the same time nearby tree has a shadow of 15.6 meters. how tall is the tree? What equation would be used for this?

MATH
The exterior angle of a regular polygon is the angle formed by an extended side and the adjacent side. a)what is the measure of each interior angel of a regular pentagon. (There is apicture on the page and each side measures 21mm) Help please.

physics
A pendulum has a mass of 3-kg, a length of 2 meters and swings through a (half)arc of 27.3 degrees. What is its Amplitude to the nearest centimeter ?

science
a ______ is the main unit of measure in the metric system a)millimeter b)kilometer c)centimeter d)meter e) none of the above d

Physics
A pendulum has a mass of 2.7 kg, a length of 1.7 meters, and swings through a (half)arc of 22.7 degrees. What is its amplitude to the nearest centimeter?

physics
A pendulum has a mass of 3.6 kg, a length of 2.1 meters, and swings through a (half)arc of 26.2 degrees. What is its amplitude to the nearest centimeter?

Physics
A pendulum has a mass of 3.2 kg, a length of 2 meters and swings through a (half)arc of 28.1 degrees. What is its amplitude to the nearest centimeter?

geometric
Which metric unit can use to mass of a grasshopper. A)centimeter. B)meter. C)gram. My answer is ( C ). Can you tell me it's correct please.

Trigonometry - Geometry - side lengths
In convex quadrilateral ABCD, angle A is congruent to angle C, AB=CD=180, and AD is not equal to BC. The perimeter of ABCD is 640. Find cos A. Hmm...I drew the diagram, and labeled some things, I drew an altitude from D to AB and did some other things, but no success was ...

math
If the adjacent vertices of a square ABCD are A ( -2 , 0 ) , find - The equation of the two diagonals AC and BD - The point of intersection O of the two diagonals AC and BD - The equation of the altitude from O to the side CD - The centroid of the triangle OCD by finding any ...

Geometry-PSSA Practice
Which of the following quadrilaterals must have diagonals that bisect each other? Rectangle Parallelogram Rhombus Isosceles Trapezoid

solid mensuration
The base of a right prism is a rhombus whose sides are 20cm and the shorter diagonal is 24in..find the area pls.

Math solid mensurations
rhombus ABCD has diagonals that intersect at E. DF is drawn perpendicular to DC and AD at D. With AB = 10cm, <BCD = 60 degrees and FD = 4cm, Find the length of FE

Math
The area of a rhombus is 60cmsq. If one of its diagonl is 16cm.find the other diagonal. Plz gve ful sltn nd ans is 7.5m

Math-Trig
Answer to four significant figures, or to the nearest minute. f) one vertex angle of a rhombus is 25°. Find the ratio of the diagonals.

Perimeter and area
The gadget comes with a page of instructions. When page is unfolded, it is 81 square inches. If one page is nine inches wide what is the perimeter?

MTH208
The perimeter of a rectangle equals the sum of the lengths of its four sides. If the width of a rectangle is 3 inches and its perimeter is 42 inches, find the length of the rectangle

algebra
The perimeter of a rectangle equlas the sum of the lengths of its four sides. If the width of a rectangle is 7 inches and its perimeter is 46 inches, find the length of the rectangle

algebra
The perimeter of a rectangle equals the sume of the lengths of its four sides. If the width of a rectangle is 9 inches and its perimeter is 52 inches, find the length of the rectangle.

math
the perimeter of two square are 848cm and 436cm find the perimeter of square whose area is equal to the sum of areas of two square.

chem
why is H+ a proton h+ would be a proton because it has a positive electric charge,just as all protons have to be positive. im just beginning to stdy this so take my answer and search it before you write anything down, but im pretty sure its right. Yeah, you are right. Anything...

Math
Abigail Adventuresome took a shortcut along the diagonal of a rectangular field and saved a distance equal to 1/3 the length of the longer side.Find the retio of the length of the shorter side of the rectangle to that of the longer side.

mathematics (word problems leading to linear equations )
The side of one square is 5cm longer than the side of another square. The area of the two squares differ by 85 square centimetres. find the length of the side of the smaller square.

math
Highway engineers often use quadratic functions to model safe distance for cars. For example, f(x)= 1/2 x^2 + 4/5x is sometimes used to model the stopping distance for a car traveling at X miles per hour on dry, level pavement. If a driver can see only 200 ft ahead on a ...

Geometry
Can some one please check these for me.Thanks Angle DEF is similar to Angle HJK and the scale factor of angle DEF to anle HJK IS 5/2. If EF =15 FIND JK Here is what I came up with Am I correct 5/2 = EF/JK 5/2 =15/JK 5(JK)=30 JK=30/5 JK=6 Given: ABCD is a parallelogram; <1 ...

geometry
Suppose the dimensions of a rectangle with a perimeter of 21 inches are doubled. What is the perimeter of the new rectangle in inches?

Algebra 1
Write an equation for for each translation of y=|x| 1. left 2 units y = |x| consists of two 45 degree curves joined at the origin: y = x for x>0, and y = -x for x < 0. To move the curves to the left 2 units, you want the sign of the term inside the absolute value sign to...

perimeter
how to draw a 15 cm and 9 cm perimeter

math
Prove this identity (cos è - 1) / (cos^2 è) = sec è - sec^2 è I have a question when you simplify the secant in terms of cosine. Would you cross multiply but then again there's the subtraction sign there instead of a multiplication sign? then would you multiply by the lcd ...

Trigonometry
4. An observer is near a river and wants to calculate the distance across the river. He measures the angle between his observations of two points on the shore, one on his side and one on the other side, to be 28º. The distance between him and the point on his side of the ...

Physics
Two rockets are flying in the same direction and are side by side at the instant their retrorockets fire. Rocket A has an initial velocity of + 6400 m/s, while rocket B has an initial velocity of + 9800 m/s. After a time t both rockets are again side by side, the displacement ...

Phyics
Two rockets are flying in the same direction and are side by side at the instant their retrorockets fire. Rocket A has an initial velocity of +5800 m/s, while rocket B has an initial velocity of +9100 m/s. After a time t both rockets are again side by side, the displacement of...

physics 1
Two rockets are flying in the same direction and are side by side at the instant their retrorockets fire. Rocket A has an initial velocity of +6700 m/s, while rocket B has an initial velocity of +9700 m/s. After a time t both rockets are again side by side, the displacement of...

physics
Two rockets are flying in the same direction and are side by side at the instant their retrorockets fire. Rocket A has an initial velocity of +4100 m/s, while rocket B has an initial velocity of +9400 m/s. After a time t both rockets are again side by side, the displacement of...

Physics
Two rockets are flying in the same direction and are side by side at the instant their retrorockets fire. Rocket A has an initial velocity of +4800 m/s, while rocket B has an initial velocity of +9000 m/s. After a time t both rockets are again side by side, the displacement of...

Science, Chemistry
Hess's law ____. A) makes it possible to calculate ΔH for complicated chemical reactions B) states that when you reverse a chemical equation, the sign of ΔH does not change. C) determines the way a calorimeter works D) describes the vaporization of solids Highly ...

trig
use an inverse trig function to write è as a function of x (There is a right triangle. The hypotenuse is 2. è is the angle between the base and the hypotenuse. The base/adjacent side of è is (x + 1) The side opposite è does not have a value.) a) è = sqrt [4 - (x + 1)^2] ...

7th grade math
Can you help with geometry? 1. Sally constructs a triangle with one side 6 inches long and another side 8 inches long. What is the 3rd side? (haven't learned Pythagorean theorem) Ans: 6 + x > 8 x > 2 6 + 8 > x 14 > x 8 + x > 6 x > -2 so, x must be > 2, but...

Algebra
The perimeter of a rectangle equals the sum of its lengths of its 4 sides. If the width of a rectangle is 4 inches and its perimeter is 38 inches, find the length of the rectangle.

algebra
The perimeter of a square is 12cm greater than that of another square. It's area exceeds the area of the other by 39cm^2. Find the perimeter of each square. I don't get how to set this up.

grade 3 math
1) what is the greates perimeter of a rectangle with an area of 39 square feet? 2) What is the least perimeter of a rectangle with an area of 32 square feet? 3) A rectangle has an area of 42 square inches. Which has a greater perimeter, the rectangle with the dimensions 21 x2 ...

college
A car weighing 15,000 N is speeding down the highway at 90 km/h. What is its momentum?

science
what units would you use to measure the speed of a car on the highway?

math
A section of the highway rises 15 feet in a mile, calculate the grade.

social studies
which two cities of nepal are connected by siddhartha highway?

geometry
The lengths of the sides of a rectangle become 4 times greater than the original measurements. Which statement is true about the rectangle? A. Its area becomes 4 times greater, and perimeter becomes 16 times greater. B. Its area becomes 16 times greater, and perimeter becomes ...

calculus
proponents of the peak oil theory claim that worldwide production of petroleum will soon reach a maximum and start to decline. (there is considerable debate about how soon this will occur) let P(t)= the world's rate of petroleum production t years after 2000. let T be the date...

Sign Language
Hi I would like for my answers to be checked for these two questions (Note: I'm not sure if the 2nd one is correct): 1. Several school-related words are based on which sign? a. book b. learn c. school d. study My Answer: book 2. How do you change a statement in American Sign ...

Finance
When a company’s executives purchase securities of their company and disclose it to the public: A) It is considered illegal B) This strategy is considered a Flight to Quality C) The market does not react D) It is generally seen as a positive sign for the company E) It is ...

math
find the cost of cementing a driveway that is 900 cm wide by 1600cm long by 3 cm thick. The price per cubic centimeter is $5.20.

Trigonometry
Determine the circumference of a circle with 7.4 centimeter radius. (Use 3.14 ) Im not trying to get this completely answered. I just need help with what to do first. Thank you so much.

Math
Two equilateral triangles are sitting side-by-side. The length of one side of Triangle A is 5 ft. The sides of Triangle B are 3 times as long as those of Triangle A. How long is the length of one side of Triangle B?

math
In triangle ABC, side AB = 17 inches and side BC = 25 inches. What could be the length of side AC?

math
in a triangle /one side is x/one side is x+1/another side is 20/if it is true and what is value of x

Maths
The longer side of a rectangle is X meters while the shorter side is Y meters,the longer side is at least 10cm and the shorter side is less than 10cm.

math
find the missing length in this diagram showing a T-square. (reduce the radical to simplist form. 6 cm (one side of triangle) 3 cm ( other side of triangle) the third side (diagonal line conecting other two sides)= x cm.

Math
The perimeter of rectangle Z is equal to its area.Rectangle Y has the same perimeter as rectangle Z.The length of rectangle Y is 5 inches and width of rectangle Z.

physics
To say a substance is electrically polarized is to say that its net charge is ____________________. A) either negative or positive, but relatively weak.B) weakly positive in sign.C) None of these.D) is normally zero with opposite charges on opposite ends.E) weakly negative in ...

MATH
i need help filling this out! 4x-10=32-3x 4x-10+____=32-3x+22 ____-10+____=32+_____ ___=___ ___=___ x=___ ok you need to solve for x. remember the rule, whatever you do on the left side, you do to the right side and vice versa. on the second step, they add 22 to the right side...

Sign Language
Deaf Music is music played by Deaf musicians only*** is music by hearing artists about Deaf people is music interpreted into American Sign Language expresses what being Deaf means

Math
Hannah plans on going hiking most of the day. It is recommended that she takes at least 3 liters of water with her. She packed 3 water bottles. The bottles she brought are cylinders with a radius of 3cm and a height of 30cm. What is the volume of one bottle to the nearest ...

geometry
The perimeter of triangle ABC is 13 cm. It was dilated to create triangle A'B'C' The perimeter of triangle...is cm

raiots and perimeter
you have to figures that are similar, large one is 28yds, and the smaller one is 8yds. give the ratio of the perimeter and the ratio of the areas of the larger figure to the small one. Can someone please help not just answer but explain

Science
a 51.0 kg uniform square sign, of edge L = 2.00 m, is hung from a horizontal rod of length dh = 3.00 m and negligible mass. A cable is attached to the end of the rod and to a point on the wall at distance dv = 4.00 m above the point where the rod is hinged to the wall. (a) ...

10th grade
geometry in Triangle xyz, ab is a midsegment of xyz. ax is = 26, bz=36 ay is congruent to ax and bx is congruent ot bz. I get that side yx = 52 and side yz is equal to 72 how do you get the value of side yz? is it 72?

pre calc
area of triangle XYZ given:side z=11 side x=7 and side y=13 what are the angles and area please? please explain

Math
The adjacent side of parallelogram are 36 cm and 27 CM in length if the distance between the shorter side is 12 cm find the distance between the longer side

Math
A piece of paper is cut into 25 equal parts that are similar in shape to the original. what is the perimeter of one of the small pieces divided by the perimeter of the original piece of paper?

Math
The sum of the lengths of any two sides of a triangle must be greater than the third side. If a triangle has one side that is 22 cm and a second side that is 2 cm less than twice the third side, what are the possible lengths for the second and third sides?

Math
I just wanted to double check that I am correct. Answer is in Interval Notation. 1. Solve: |x|<7 Work: -7>x<7 Answer: (-7,7) 2. Solve: |x|>_ 7 Work: -7<_ x >_ 7 Answer: ( - infinity sign, -7] U [7, infinity sign)

English
1. The children lay down on their stomachs. 2. The children lay down on their belleies. 3. The children lay down on their fronts. (Which expressions are right?) 4. Lay on your right side on the floor. 5. Lay on your left side on the floor. 6. Lay on your front side on the ...

geometry
in quadrilateral ABCD AC is a diagonol, m<ACD=2x+4 and m<ACB=5x-11 what proves ABCD a rhombus

Geometry
ABCD is a rhombus. Explain why triangle ABC is congruent to triangle CDA.

farmingdale
in rhombus abcd the measure in inches of ab is 5x+7 and dc is 2x+25 find the number of inches in the length of dc

math
in rhombus abcd the measure in inches of ab is 5x+7 and dc is 2x+25 find the number of inches in the length of dc

Geometry
In rhombus PQSR, PQ=y+8 and QS = 4y-7. Find PQ. Also... In rectangle ABCD,AB=x+15, BC=x-8, and CD=2x+3. Find: 1)x. 2)AB 3)BC Thanks!

Math
In a rhombus all angles are right angles. True or False?

Math
How many real roots does f(x) = x^3+5x+1 have? x^3 = odd polynomial = at least 1 real root Can I follow Descartes' rule for this? No sign change, so there aren't any positive zeros. when I sub in -x for x (-x)^3+ 5(-x) + 1 = -x^3-5x+1 Then there is one sign change, so 1 ...

statistics
Sign in Assume that the mean score on a certain aptitude test across the nation is 100, and that the standard deviation is 20 points. Find the probability that the mean aptitude test score for a randomly selected group of 150 8th graders is between 99.5 and 100.5. Sign in

algebra
Set the equations equal to each other so you can determine when the car and bus are the same distance from the intersection. Collect all the terms on the left side of this new equation., leaving 0 on the right side. Factor the expression on the left side of the equation.

calculus
A farmer has 180 feet of fence and wants a pen to adjoin to the whole side of the 120 foot barn as shown. What should the dimentions be for maximum area. Note that in this case Write the equation for perimeter of the three sided rectangle. Write the equation for area in terms ...

Math
2 expression for the perimeter of a square 1 with brackets and 1 without The shape is a square and t+3 is 1 side of the square P(with brackets) P(without brackets)

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