# Posts by Anonymous

Total # Posts: 109,567

Math
Thank You!! This really helped me!!

Math
Algebra 1 Simplify the radical _____ 5_/700 I'm confused on what to do with the 5...

Maths
show that the circles x^2 + y^2 - 10x - 8y + 18 = 0 and x^2 + y^2 - 8y - 4y + 14 = 0 do not intersect

math
no idea , go find ur self

Algebra
Explain how to use the measures of a right triangle to calculate the exact value of sin 30 degrees? How can this information be used to determine the exact value of sin 60 degrees?

maths
show that the circles x^2 + y^2 - 10x - 8y + 18 = 0 and x^2 + y^2 - 8y - 4y +14x = 0 do not intersect

Social Studies
Thank you :)

Social Studies
Which country today has the largest muslim population. A. Iraq B. Indonesia C. Iran D. the United states

math
A cable channel survey showed that about 50% of subscribers preferred watching a comedy to an action movie on Saturday nights. If you want to estimate the probability that exactly two of three randomly picked subscribers prefer watching an action movie on a Saturday night, how...

Sociology
1 is B

Psychology
I am curious as to how someone who distributes a personality test would be able to decipher who is and who is not telling the truth on the test? If the test is straightforward such as "are you a liar?" obviously that is not desirable and people could just answer '...

social studies
Is Plato now of the teachers of Hippocrates (the Father of medicine)

Math
18.125

Math
A baby weight 7.25 at birth at the end of a eight months the baby weight 2 and a half times its birth weight how many pounds did the baby weight at the end of eight months

ELA
gasp chyanne your language! they just haven't seen your a good man Charlie brown why do you have to use such bad language!

math
what's the solution for y=2x-1 and y=x+3

MAth
3a +4/4a+4 x a^2 - 6a -7 Asking for the product so confused

accounting
The following information was available as of the close of business June 1, 2004 on government of Canada bonds. Coupon...Maturity.....Price.....Yield 5.00%......June 1, 2005......102.35......2.60 10.50%......June 1, 2006......113.91......3.26 8.50%......June 1, 2007.....107.41...

Physics
What does it mean when the position vs. time graph is below the x-axis?

science

math
answer How do you write a song hat will knock over a cow?

physics pls help i found answer but its wrong
kgm^2/s^2 is also J for units

physics pls help i found answer but its wrong
Some dragonflies splash down onto the surface of a lake to clean themselves. After this dunking, the dragonflies gain altitude, and then spin rapidly at about 1100 rpm to spray the water off their bodies. When the dragonflies do this "spin-dry," they tuck themselves ...

math
A swimmer swam 0.8 mi at 0.0323 mi per min in waters created by melted sea ice. What was his? time?

physics
Find the coordinate of the center of mass of the bricks shown in the figure.(Figure 1) Express your answer in terms of L. <------------ L---------> <---L4---> ---L2------> -------------------------------------------> 0 X

Algebra 1
Thank you

Algebra 1
I am changing my answers to the first question as A and the second as C

Algebra 1
How many solutions does this system have? y=x+5 y=?5x?1 A. One B. None C. Infinite D. Two** Which best describes a system of equations that has infinitely many solutions? A. Consistent, independent B. Inconsistent, dependent C. Consistent, dependent D. Inconsistent** I'm ...

physic - stress and strain
Sample 1, Original Length 250 mm and 10 mm Diameter, Length after testing 250.23 mm the force used for the test was 15KN Calculate the Stress and Strain for each of the Samples and from this and, assuming the material has remained within the elastic limit, determine their ...

History
So.... D?

History
Why did Seward buy Alaska? A)To access Alaskan gold. **B)To kick Russia out of North America.** C)To increase trade in Asia and the Pacific. D)To develop desirable land.

maths
Sample 1, Original Length 250 mm and 10 mm Diameter, Length after testing 250.23 mm the force used for the test was 15KN Calculate the Stress and Strain for each of the Samples and from this and, assuming the material has remained within the elastic limit, determine their ...

Physics
a body moving with uniform acceleration travels 84m in First6s and 180m in next 5s . Find the initial velocity and acceleration of body

Science
How will resistance change when the voltage increases in an electric circuit if the current remains constant

Science
6.022*10^22 in one bank

Science
6.022*10^22

maths
Jake is mapping out important family events. He uses negative numbers to represent time before he was born and positive numbers to represent time after he was born. For example, Jake's mum was born in year âˆ’20, and Jake's sister was born in year 5. ...

Chemistry
The measured pH of a 0.100M solution of NH3(aq) at 25C is 11.12. Calculate Kb for Nh3(aq)at 25C.

Juvenile Justice
I was finally able to find the answer to be kent v u.s. in my textbook (in a different chapter that the question was from!) Thank you for the help, it was useful in confirming my answer!

Juvenile Justice
What Juvenile case eliminated the hands-off doctrine for juvenile courts?

Algebra
2x^2-5x-12/10x+15

algebra
A fish can swim 45 miles downriver in the same amount of time that it can swim 27 miles upriver. Solve for the speed of the current if the speed of the fish is 12 mph in still water. Show all of your work and explain your solution.

algebra
The volume V of a gas varies inversely as the pressure P on it. If the volume is 250 cm3 under a pressure of 35 kg/cm3, solve for the pressure applied to have a volume of 180 cm3. Be sure to define your variables, find your constant variable, construct your variation equation...

Chemistry
Yes, sorry typo.

Chemistry
Show the steps needed to determine the energy in a red photon of 7.0 x 10^2 nm. E= h * (c/?) 6.62e-34 * (3e8/2e-7) 2.837e-19 J? Is this correct?

math
solve the following by a quadratic equation and then solving it. a rocket is projected vertically upwards from ground level, its height "h" meters after "t" seconds is given by the formula h=35t-5t^2 how long does it take to reach 50 meters? you should have...

maths
solve the following by a quadratic equation and then solving it. a rocket is projected vertically upwards from ground level, its height "h" meters after "t" seconds is given by the formula h=35t-5t^2 how long does it take to reach 50 meters? you should have...

maths
solve the following by a quadratic equation and then solving it. a rocket is projected vertically upwards from ground level, its height "h" meters. how long does it take to reach 50 meters? you should have two answers, explain the meaning of the two answers. thanks

Why do states require centers to be licensed?

Calc
Find a Cartesian equation for the curve and identify it. r=5cscx

Chemistry
Three bottles lost their labels. One contained an aqueous solution of HCl, another an aqueous solution of HNO3, and the third contained an aqueous solution of H2SO4. Write an experimental procedure that would allow you to correctly identify the contents of the bottles using ...

physics help
Some dragonflies splash down onto the surface of a lake to clean themselves. After this dunking, the dragonflies gain altitude, and then spin rapidly at about 1100 rpm to spray the water off their bodies. When the dragonflies do this "spin-dry," they tuck themselves...

physics help
i couldn't find the answer for part one still is wrong pls help You drive down the road at 39 m/s (88 mi/h) in a car whose tires have a radius of 34 cm. What is the period of rotation of the tires?2sf value/units Through what angle does a tire rotate in one second?2sf ...

physics help
You drive down the road at 39 m/s (88 mi/h) in a car whose tires have a radius of 34 cm. What is the period of rotation of the tires?2sf value/units Through what angle does a tire rotate in one second?2sf value/ units

Chemistry
Three bottles lost their labels. One contained an aqueous solution of HCl, another an aqueous solution of HNO3, and the third contained an aqueous solution of H2SO4. Write an experimental procedure that would allow you to correctly identify the contents of the bottles using ...

social studies
What are the causes of contemporary social issues?

math
The perimeter of the base of the regular quadrilateral pyramid is P = 30 cm. Find the sum of all edges of this pyramid, if the perimeter of a lateral face is 27.5 cm

geometry
The side of one square is equal to 1m, and its diagonal is equal to the side of a second square. Find the diagonal of the second square.

Math
212

Calculus
dT/dt = -kT-A I think not dT/dt = -k(T-A)

Calculus
dT/dt = -k (T-A) yes try T = A + (To - A) e^-kt then dT/dt = -k(To-A) e^-kt but T-A = (To-A)e^-kt so dT/dt = -k(T-A) it works so 85 = 30 + (90-30)e^-k(1) 55 = 60 e^-k ln(55/60) = -k solve for k then use that k 60 = 30 +60 e^-k t .5 = e^-kt ln .5 = -k t solve for t

Calculus
The temperature of a pan of hot water varies according to Newton's Law of Cooling: dT dt equals negative k times the quantity T minus A, where T is the water temperature, A is the room temperature, and k is a positive constant. If the water cools from 90Â°C to 85...

Calculus
The slope of the tangent line to a curve at any point (x, y) on the curve is x divided by y. What is the equation of the curve if (2, 1) is a point on the curve?

physics
a cylindrical storage tank has a radius of 1.05m. when filled to a height of 3.79m, it holds 13500kg of a liquid industrial solvent. what is the density?

chemistry
The oxidation number of sulphur in CuSO4.5H2O is ......

check statement

huh?
Problem statement makes no sense to me. The heavier it is the more I can lift?

physics
P V = n R T flexure warms rubber, P rises

Science
22.4 liters/mol CO2 = 12 + 16 + 16 = 44 grams/mol so (10/44)22.4 = 5.1 liters

Math
divide all by two to make it easier 2,3,4 law of cosines c^2 = a^2 + b^2 - 2 a b cos C 16 = 4 + 9 -2*2*3cos C 12 cos C = -3 cos C = -.25 C = 104.5 degees

Math
volume scales with cube of length 50*50*50 * .112 = 14,000

Physics
You have a 4.5 kg lead block at room temperature. Find the energy required to raise the lead's temperature to its melting point. Find the energy required to melt the lead once it's reached the melting point.

Geometry
In Triangle XYZ, the measure of angle X is 5/8 as large as the measure of angle Y. If the measure of angle Z is 1/4 as large as the measure of the angle Y, what's the measure of all three angles. I've tried making up numbers to fit in the problem, but nothing is ...

Algebra
The path of a football thrown by a quarterback can be modeled be the equation y=-0.04x^2+4x+5 where x is the horizontal distance in feet and y is the corresponding height in feet.find the interval on which the height is increasing.what is the average rate of change on this ...

Geometry
In Triangle XYZ, the measure of angle X is 5/8 as large as the measure of angle Y. If the measure of angle Z is 1/4 as large as the measure of the angle Y, what's the measure of all three angles. I've tried making up numbers to fit in the problem, but nothing is ...

Geometry
In Triangle XYZ, the measure of angle X is 5/8 as large as the measure of angle Y. If the measure of angle Z is 1/4 as large as the measure of the angle Y, what's the measure of all three angles. I've tried making up numbers to fit in the problem, but nothing is ...

math
in lotto draw balls 1-50 mixed together. machine randomly selects numbers 13,11,7,27,41. is the 6th number drown A. more like to be odd than even b. more likely to be even than odd c. equally likely i could not decide, as long as there even and odd numbers, there is a ...

Calculus
How do you come up with 1 - ?y if the line is x = -1?

Calculus
Find the area of the region bounded by y = x^2, y = 0, x = -1, and x = 2. I tried the integral from -1 to 2 of x^2 and got 3 as the answer. I tried (integral from 0 to 1 of ?y + 1) + (integral from 0 to 4 of 2 - ?y) and got 13/3. What is wrong with the way the integrals are ...

Physics pls help
Two dogs, Rover and Fido, run on a level frictionless surface. Rover runs eastward with a momentum of 24 kg . m/s, and Fido runs northward with momentum 10 kg . m/s. They make a sudden perfectly inelastic collision. What is the magnitude of their combined momentum after the ...

It is the case that good communicators advance more quickly in the company. What would be best revision of this sentence?

muddled
lift is not perpendicular to wings but perpendicular to the apparent air velocity (direction of motion ). You got it right about drag. Is the plane following a horizontal path with nose tipped up 30 degrees (or 30 minutes, I can not tell from your text) or is it climbing or ...

Maths
A paper clip is made from 9.2 cm of wire what is the greatest number of paper clips that can be made from 10 m of wire

Calculus

Calculus
The radius of a circle is increasing at a rate of 3 ft/min. If the radius is 0 when the time is 0, how fast is the circle's area changing when time is at 10 minutes?

Math, Algebra, Graphing Systems of Linear Equation
I'm confused about graphing or solving the linear equations for slope/intercept. Here is what I solved: 3x+2y=-6 X-4y=-16 2y= -3x-6 -4y=1x-16 Y=-3/2+3 Y=+1/4+4 ------------- My answer for graphing the systems for the lines to intersect...well, they didn't intersect. ...

Math, Algebra, Graphing Systems of Linear Equation
I'm confused about graphing or solving the linear equations for slope/intercept. Here is what I solved: 3x+2y=-6 X-4y=-16 2y= -3x-6 -4y=1x-16 Y=-3/2+3 Y=+1/4+4 ------------- My answer for graphing the systems for the lines to intersect...well, they didn't intersect. ...

Physics
A rock is dropped from a height of 2 meters into a freshwater pond. How would I change the amplitude of this wave?

apush

apush
20 reasons for European exploration in 15th and 16th century? I have to get 20 but i can't find any other reason. Please read what i have and try to think of what i can put on the list. ? Fall of Constantinople to muslim ottoman turks. Constantinople connected europe and ...

math
Find the pressure exerted by the atmosphere on a car window which is 30 cm tall and 40 cm wide if atmospheric pressure is 101,000 Pa. (Remember that a Pa = N/m2)

Chemistry
What is the difference between a diprotic and triprotic acid? How does each acid ionise in water?

physics
A rock is dropped from a height of 2 meters into a freshwater pond. What is the medium of the wave created?

physics
A 14.0-m uniform ladder weighing 510 N rests against a frictionless wall. The ladder makes a 59.0Â° angle with the horizontal. (a) Find the horizontal and vertical forces the ground exerts on the base of the ladder when an 830-N firefighter has climbed 3.80 m along ...

maths
1. solve 10x + 4 = 39 2. solve 4(9x + 2)= 152

math
and number 5 the dieameter is 28.2

math
number 6 number 4 number 14

physics
A uniform meter stick ( 100 cm long) that weighs 0.50 N has a 2 N weight located at the 30 cm mark (from the left) and a 5 N weight at the 85 cm mark (from the left). Where along the meter stick is the center of gravity of this system?

Social studies
Need help with a few questions on my lesson 9 unit test In what way did the purchase of Alaska fit with Secretary of State William Seward foreign policy toward Asia?

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