Wednesday

April 23, 2014

April 23, 2014

Total # Posts: 648

**homework check**

which if the following statements is false? a. The points of a circle are coplanar b. Concentric circles intersect in exactally one point c. In are AB C Denotes that an arc of the circle has endpoints A and C and that passes thru B d. If a line and a circle are coplanar and th...

**Math**

4 out of 10 or 2/5

**Geometry**

in a circle of radius 11 cm, find the area of the segment bounded by an arc of measure 60 degrees and the chord joining the endpoints of the arc. A. 12.9 cm B. 122.5 cm C. 11.0 cm D. none of these

**geometry Please help!**

The radii of the larger wheels on a tractor are 32 cm. If the ratio of the diameter of a large to small wheel is 19:7, find the diameters of the smaller wheels

**Geometry**

Two straight pipes intersect under a circular garden and intercept non-adjacent arcs that measure 34 degrees and 108 degrees. What is the measure of the acute vertical angles formed where the two pipes intersect?

**Geometry!**

d is correct

**math**

yes he has enough I did 10.20 Divided by 1.02 and it equals 10

**Math**

The diameter of a circle is 130 cm, and a chord of the circle is 66 cm long. What is the distance between the chord and the center of the cirlce?

**Geometry **

A park maintenance person stands 23 m from a circular monument. If you assume her lines of site are tangents to the monument and make an angle of 23degrees, what is the measure of the monument that her lines of site intercect?

**Geometry**

Thanks so much!

**Geometry **

The measure of the central angle of a sector of a circle is 90degrees. The arc length of the sector is 3(pie) cm. What is the radius of the circle?

**Geometry**

6 = x + 2

**Algebra 2 **

Part 1 Describe the graphs of the functions f(x) = 2^x – 1 and g(x) = –2^x – 1 Part 2 Compare and contrast the domain and range of f(x) and g(x).

**earth**

3. Show how the length of day changes with latitude by plotting the following points. Use the table below as a graph and place an X in the box where you want to plot a data point. For example, if you find that a day is 10 hours long at 30° N latitude, represent this data w...

**chemistry**

What weight of potassium chlorate is required to prepare 89.6mL of oxygen measured over water at 21.0 degrees C and 743 millimeters of mercury?

**calculus**

How do I find the indefinite integral of cosx/(1-cos^2 x)dx?

**geometry**

If you had a room that is 10 foot by 12 foot in the shape of a rectangle, and one gallon of paint covers about 350 square feet, how many gallons of paint would you have to buy if you were painting the walls and the ceiling?

**GEOMETRY**

Find JK for (3,8) and K(-1, 4).

**physics**

The 1 kg standard body has an acceleration of 2 m/s^2 at 56 degrees to the positive direction of the x axis. What are the x and y components of the net force on it? What is the net force of the unit-vector notation?

**literature**

Write two original sentences for each of the following seven sentence patterns: 1.S-V-DO (includes S-V-DO-OC) 2.S-V 3.S-V-IO-DO 4.S-LV-PN 5.S-LV-PA 6.EXPLETIVE-VERB-SUBJECT (inverted sentence) 7.QUESTION PATTERN

**Trugonometry**

Simplify the expression √x2 +1 as much as possible after substituting tan(θ) for x.

**Math **

Determine each tangent ratio to four decimal places using a calculator. A) tan 74 degrees B) tan 45 degrees C) tan 60 degrees D) tan 89 degrees How do I figure this out !?

**physics**

A 15 kg block is pulled 5 m across the frictionless floor with a force of 62 N at a 41 degree angle. Calculate the total work done on the block.

**geography and world Cultures**

i dont know LMFAOOOOOOOOOOOOOOOOOOO

**Geometry**

Use the slope of AB to determine which line below, if any, is parallel to AB. A(1,8) B6,-4) a. y = 5/12x + 5 b. y = -5/12x + 5 c. y = 12/5x + 5 d. none

**Geometry**

Use the slopes of AB and CD to determine whether AB and CD are parallel, perpendicular, or neither. A(-8,5) B(-2,-4) C(6,0) D(0,-4)

**Geometry**

Find a counterexample to the following definition: An animal with wings is a bird.

**Geometry**

How can the statement "cars are vehicles" be written as a conditional statement?

**Geometry**

write two conditional statements that make up the following biconditional statement: "Two lines are perpendicular if and only if their intersection creates 4 right angles."

**Pre-Cal**

are you sure tan e is correct?? you have to round to 4 places. I got .1005 for it

**math algebra 2**

(y-3)/2-13=-9 solve for y

**math algebra 2**

solve for y 5x-y=3z+5y

**Ben davis**

solve for y 4y+10=12

**physics/math**

Ahhh! I've seen some examples of this type of problem but I can't seem to solve it! Two stones are thrown simultaneously, one straight upward from the base of a cliff and the other straight downward from the top of the cliff. The height of the cliff is 6.86 m. The ston...

**Algebra 2**

Find each of the following for x^2+5x+6 and x^2+x-2. a) the LCM b) the GCF

**Calculus**

A tank is full of water. Find the work W required to pump the water out of the spout. r=6 h=3

**Calculus**

A tank is full of water. Find the work W required to pump the water out of the spout. r=6 h=3

**Calculus**

A spring has a natural length of 24 cm. If a 27-N force is required to keep it stretched to a length of 30 cm, how much work W is required to stretch it from 24 cm to 27 cm? (Round your answer to two decimal places.)

**Calculus**

A spring has a natural length of 24 cm. If a 27-N force is required to keep it stretched to a length of 30 cm, how much work W is required to stretch it from 24 cm to 27 cm? (Round your answer to two decimal places.)

**calculus**

ç(3x+2) dx

**calculus**

Evaluate the integral. Express your answer using words or symbols. ç(-2sin x) dx

**calculus**

Approximate the area in the first quadrant between the x-axis, the y-axis, the line x = 3, and the function f(x) = x^2+1 For this approximation, you must use 6 rectangles of equal width, and this must be a lower sum. In your answer, you must include letters a-d below: a. The w...

**calculus**

Solve the differential equation below, given the initial condition f(0) = 3. Express your answer using words or symbols. y=-5x^2

**Business Law**

A Fortune 500 CFO admits to having deliberately treated $4 billion in operating expenses as assets, thereby allowing the corporation to show profits instead of losses. The auditor never detected this. The corporation’s stock drops 95 percent and bond covenants related to ...

**science - biology**

What is the health advantage that can result in sickle cell hemoglobin?

**Physics**

A block of mass m is being dragged across the floor by a force F. The coefficient of friction between the block and floor is u. Show that if the block is being accelerated by the force F from rest for a time t, the speed of the block at time t can be found from: Vf= (F/m - ug)t

**algebra**

Find each of the following for x^2+5x+6 and x^2+x-2. a) the LCM b) the GCF

**calculus**

Find the number b such that the line y = b divides the region bounded by the curves y = 16x2 and y = 9 into two regions with equal area. (Round your answer to two decimal places.)

**calculus**

Find the number b such that the line y = b divides the region bounded by the curves y = 16x2 and y = 9 into two regions with equal area. (Round your answer to two decimal places.)

**Social Studies**

I've done research Im just not sure which one would be the best answer I'm really confused

**Social Studies**

The interaction of private companies trying to make the greatest profit and customers trying to get the best deal is called A) competition B) blind faith C) the invisible hand D) the zero sum game Blind faith means belief without true understanding so I'm pretty sure it...

**Social Studies**

Thank you!

**Social Studies**

Oh that helps , so the answer is A then .

**Social Studies**

I'm still not sure

**Social Studies**

I've read a lot about him , i think it is C but I'm not sure . There is info on him that leads me to other answers as well...

**Social Studies**

Karl Marx's ideas are the foundation of A) communism B) capitalism C) mercantilism D) fascism

**career research&decision making**

each occupational field

**chemistry**

Find the solubility of AgBr in 3.9 M NH3 [Ksp of AgBr = 5.0 10-13 and Kf of Ag(NH3)2+ = 1.7 107]

**General Chemistry 1**

What is the FBF bond angle for BF^4- ?

**trig**

Hi, I need to find the domain and rnge of the following: 1. X= 1/2 (cos theta + theta sin theta) Y=1/2 (sin theta - theta cos theta) total guess here, but here goes Domain cos theta = +/- 1 and domain sin theta = +/- 1 so domain theta sin theta = 0- +/-infinity so domain of X=...

**physical science**

how do i find how long the steel is in a 156 kg coil of sheet steel that is .80 mm thick and 50 cm wide.

**english**

mrs. sally johnson lives in dallas texass whats the capitalization?

**Pre-Calculus**

I posted earlier and didn't get an answer so I'm posting again-hoping someone could please check these two-I think they're correct Please check my answer: I think it's correct? 1.Find polar form of (-3,2) r=sqrt of (-3)^2 + 2^2)=sqrt (13) = 3.61 tan^-1(2/-3) = ...

**Pre-Calculus**

Please check my answer: I think it's correct? 1.Find polar form of (-3,2) r=sqrt of (-3)^2 + 2^2)=sqrt (13) = 3.61 tan^-1(2/-3) = 33.79 180-33.79 = 146.31degrees polar points are (sqrt13,146.31degrees) 2. Rectangular form of (3,112degrees) 3cos112= (-1.12) 3sin112=2.78 rec...

**Physics**

Two football players start from rest, 12 m apart. They run directly towards each other, both players accelerating. The first player has an acceleration of 5 m/s^2 and the second has an acceleration of 4 m/s^2. a) how much time passes before they collide? b) at the instant they...

**trig**

a tower standing on level ground is due north of piont N and due west of point W, a distance 1,500 feet from N. If the angles of elevation of the top of the tower as measured from N and W are 8 and 11, respectively, find the height of the tower.

**Economics**

1.Which of the following is NOT a decision that can be made at the margin? whether to grow beans or corn on large farm whether to hire 100 new workers or not whether to leave early in the moring or late in the day whether or not to go on vacation, I think this is the answer, c...

**algebra 2**

part 1 Describe the graphs of the functions f(x) = 2^x – 1 and g(x) = –2^x – 1. Part 2 Compare and contrast the domain and range of f(x) and g(x).

**math**

what is 1,000m3 mean. how do it get to the answer of 96,050 x 1,000 m3.

**Biology**

What is technolgy?

**Algebra**

Two numbers whose sum is 30 and product is 8800? How do I find that?

**Algebra**

Two numbers whose sum is 30 and product is 8800? How do I find that?

**SCIENCE**

How do you figure out the following ..?::::: Mass Number Number of Protons Number of Electrons (OF A ELEMENT) Number of Neutrons Thanks ~ Courtneeeey (:

**Mathematics**

The lengths of two opposing sides of a square are decreased by forty percent. By approximately what percent would the lengths of the other two sides have to be INCREASED so that the area of the new figure ( a rectangle) is the same as the area of the original square?

**world geography**

why did the south agrican government change its policy of apartheid in 1990 and 1991

**Derivatives**

a pationt recives an injection of 1.5 milligrams of a medication, and the amount remaining in the bloodstream t hours later is A(t)= 1.5e^-0.08t .find the instantaneous rate of change of this amount: a) Immediately after the injection (time t=0)

**Social Studies KKK**

How did the federal government help to reduce the klans's influence in the south?

**world history**

Britain is wrong

**science**

whats the physical form in which a substance exists?

**geometry**

what is the midpoint of a line segment with endpoints at (-4, 15) and (22,3)

**chemistry**

write the formula of each acid and identify each as a diprotic, a triprotic, or a monoprotic acid sulfuric acid,perchloric acid,phosphoric acid,hydrofluoric acid,acetic acid

**World Geography**

What words best describe the Baltic landscape?(there can be more then one answer) a. desert b. flat c. lowland d. marshland e. mountainous f. tropical I think its B E and F Can someone please help?

**Math**

Find the first five terms of each sequence, defined by the given rule. An=6N-2

**Finance- Real Estate....really need help!!!**

A developer is interested in a parcel of land for a small mixed use development. Similar developments are worth $15 million and require the following sequential investments to complete: Phase Description 1 Purch. land, permitting, utilities 2 Build retail 3 build apartment Cos...

**Real Estate Finance**

A developer is interested in a parcel of land for a small mixed use development. Similar developments are worth $15 million and require the following sequential investments to complete: Phase Description 1 Purch. land, permitting, utilities 2 Build retail 3 build apartment Cos...

**chemistry**

How many grams of hydrogen peroxide must decompose to give 255 mi of oxygen gas at stp?

**chemistry**

How many grams of hydrogen peroxide must decompose to give 255 mi of oxygen gas at stp?

**Speech**

After analyzing a problem, what is the next step in the problem-solving process? a. Develop creative solutions. b. Identify possible solutions. c. Select a solution. d. Implement a solution. I think it might be B

**Writing**

Thanks!

**Writing**

I have to write my rough draft for a research paper. I have to include a thesis statement and an attention grabber. Can someone give me some examples of attention grabbers please?

**Speech**

the 1st one i picked b the 2nd i picked d

**Speech**

Group communication should be evaluated according to which of the following characteristics? a. Do the group members attain their individual goals? b. Do all members participate in the decision-making process? c. Does the group leader encourage member-to-member interaction? d....

**Speech**

Why is it important for group members to be group-oriented?

**Chemistry **

1.62 g of CoCl2 x (xH20) were heated. After heating only .88g of CoCl2 remained. What was the formula of the original hydrate?

**Chemistry**

how do you find PH of 0.010 M HNO3 solution?

**Managerial Accounting**

Flexible budget planning Sam Yu, the president of Centech Computer Services, needs your help. He wonders about the potential effects on the firm's net income if he changes the service rate that the firm charges its customers. The following basic data pertains to fiscal yea...

**trig**

secx=5 use a graph to solve the following equation in the interval x is greater than -pie but less than pie

**Business Law**

I'm having trouble figuring out this question. I can't think of a legal theory that would apply in this case. If anyone could help me out, that would be great! Fidelity Mortgage sells a mortgage on Doug Quicksilver's home to Enterprise Bank. Enterprise erroneously ...

**intro to statisics**

78% of US homes have a telephone answering device. In a random sample of 250 homes, what is the probability that fewer than 50 do not have a telephone answering device. Courtney, 2nd yr college

**physics**

The total energy of a 2.00 kg falling rock is 5000 J. If its potential energy is 1975 J, the kinetic energy of the rock is ____ J. The speed of the rock is ___ m/s

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