Wednesday
July 30, 2014

Posts by Lina


Total # Posts: 163

Word Problem
The length and width of a rectangle are to each other as 4 is to 3. A second rectangle are 4 units longer and 2 units wider than the first one, and has twice as great an area as the first. Find the dimensions of the first rectangle.

Algebra
OMG thank you so much for the thoroughness

Algebra
1/x+1/x+5+1/3x=1/2.25 Solve for x.

Algebra
There are three pipes in which a cistern can be filled. The second takes 5 hours longer than the first, the third three times as long as the first. If all are open the cistern can be filled in 2 and 1/4 hours. How long would it take each alone to fill the cistern?

Math
can you provide a check for the answers?

Math
A monument consists of two cubical blocks of granite, the smaller resting on the larger. The total height of the monument is 5 feet, and the area of the exposed surface is 61 square feet. Find the dimensions of the blocks. Help please>.< Thank you in advance!

Math
thank you!

Math
How would you check it?

Math
A confectioner perchased several boxes of candy for $6. He gave five boxes to his children, and sold the rest at 10 cents more per box than he had paid for them, and made a profit of 25% on his original cost. How much did a box of candy cost him?

Simple Probability Question
A small manufacturing company has rated 80% of its employees as satisfactory and 20% as unsatisfactory . Personnel records show that 75% of the satisfactory workers had previous work experience in the job they are now doing, while 30% of the unsatisfactory workers had no work ...

Math
For the first of two basketball games the price of each reserved seat was $1.50,the price of each unreserved seat was 5 cents, and the number of reserved seats sold was 1/25 of the number of unreserved seats sold.If, at a second game, the price of the reserved seats is to be r...

Algebra
A passenger boat which travels 6 mph faster than a freighter required 3 days less time to make a trip of 2592 miles. Find the rate of the passenger boat.

Math
1-)A passenger boat which travels 6 mph faster than a freighter required 3 days less time to make a trip of 2592 miles. Find the rate of the passenger boat. 2-)For the first of two basketball games the price of each reserved seat was $1.50,the price of each unreserved seat was...

Help w/ Math PLS
If a, b, and c are three integers in geometric progression, prove that the number a^2+b^2+c^2 is exactly divisible by the number a+b+c.

Math
If a, b, and c are three integers in geometric progression, prove that the number a^2+b^2+c^2 is exactly divisible by the number a+b+c.

ALGEBRA
Thank you so much!

ALGEBRA
perimeter = 24 feet triangle that have one side is b =? second side is b =? third side is b - 3 =? How to solve this problem?

Math
Choose the most specific term that will make the following statement true. Do not assume anything more than the information given. I am a ____ because my opposite sides are congruent and parallel. square rectangle parallelogram rhombus

Tcc
What are the magnitudes of (a) the angular velocity, (b) the radial acceleration, and (c) the tangential acceleration of a spaceship taking a circular turn of radius 3220 km at a speed of 29000 km/h?

math
How many faces, edges, and vertices does the solid figure have? image

Math
Explain how you would convert a measurement given in ounces into pints

Math 3rd grade
2-Eric and Frank want to equally share 4/3 feet of rope. what length of rope should each friend get? Explain how to use a drawing to help solve the problem.

Physics
A mass M = 40.0 kg is suspended by a massless string from the ceiling of a van which is moving with constant acceleration a, as shown in the figure. If the string makes an angle theta = 21° with respect to the vertical, what is the acceleration a of the van? What is the te...

Physics
A cork gun contains a spring whose spring constant is 18.0 N/m. The spring is compressed by a distance ∆X = 6.0 cm and used to propel a cork of mass 7.66 g from the gun. Assuming the cork is released when the spring passes through its equilibrium position (Xeq), what is ...

Physics
A particle P travels with constant speed in a circle of radius 7.3 m and completes one revolution in 34.0 s (see Figure). The particle passes through O at t = 0 s. What is the magnitude of the average velocity during the interval from t = 11.9 s and t = 16.9 s. The answer here...

Physics
A particle P travels with constant speed in a circle of radius 7.3 m and completes one revolution in 34.0 s (see Figure). The particle passes through O at t = 0 s. What is the magnitude of the average velocity during the interval from t = 11.9 s and t = 16.9 s. The answer here...

Physics
A cork gun contains a spring whose spring constant is 18.0 N/m. The spring is compressed by a distance ∆X = 6.0 cm and used to propel a cork of mass 7.66 g from the gun. Assuming the cork is released when the spring passes through its equilibrium position (Xeq), what is ...

Nutrition
what are the principles of standing height and weight in the nutritional assessment? note: standing height and weight are from the anthropometric measurements i really need some help i couldn't find or understand what it actually wants so please some help.

statistics
How do you calculate the z-score for a package weighing 29.6 pounds ( round to 2 decimals)?

math
write the direct variation equation for the following:y varies directly with x and y=60 when x=10

math
If r = 12.5 and s = |−13|, which of the following inequalities is not true??? 1.r≠s 2.r< s 3.r≥s 4.r≤s

chemistry
the molar mass of NaOH is 40g/mol, how many grams ofNaOH are required to yield 0.65 mol?

math
yes

math
oh you multiply?

math
No wait is it 18 miles?

math
he**

math
so she could go 40 miles in 2 hours because 120/3=40

math
I'm not getting it yet?

math
oliver can jog about 3 times as fast as he can walk. If his average walking rate is one mile in 20 minutes, about how far could he jog in 2 hours?

Business calc
A total revenue function is given by R(x) = 1000(x^2 - 0.1x)^1/2 , where R(x) is the total revenue, in thousands of dollars, from the sale of x items. Find the rate at which total revenue is changing when 20 items have been sold.

Math
$6 per can

Chemistry
Kinetic energy = 1/2 mv^2 where m is the mass of the particle and v is the velocity of the particle. A joule is the SI unit for energy and is kg.m^2/s^2. Find the energy in joules of a 56.7 g mass moving at the speed of 70. km. hr.

CHEM HELP ANYONE ASAP
Arrange the members of the following set of cations in order of increasing ionic radii: Sr2+ Ba2+ Rb+ K+ I understand that Sr2+ = 132 pm Ba2+ = 149 pm Rb+ = 166 pm K+ = 152 pm increasing ionic radii ....Sr2+ , Ba2+ , K+, Rb+ But the its not going in online as correct

allied health
I don't think its C. Its D

mathmatics
thank you

mathmatics
write an expression that represents the following: Eds salary is S dollars per week. His salary is tripled and he earns a $250 bonus. how much will he have in 13 weeks

Math
Tuesday:45 Thursday: 45 saturday:45 Sunday: 45 Then you add them all

pre-calculus
find all values of x in (o, Pi) that satify the given equation cos x/3=1/2

pre-calculus
Rewrite the expression so that it involves the sum or difference of only constants and sines and cosine to the 1st power (cos 5x)^2

pre-calculus
use a sum or difference formula to find the exact of the trigonometric function cos(-13pi/12)

pre-calculus
Rewrite the expression so that it involves the sum or difference of only constants and sines and cosine to the 1st power (sinx)^4

Geometry
Write a two column proof. Given: angle STV is congruent to angle TVU, angle STU is congruent to angle UVS. Prove: Angle SVT is congruent to angle UTV.

math
a rectangle has an area of 360 square .what .it is 20 centimeters long.what is its perimeter

Physics
A long solenoid ( radius = 1.8 cm) has a current of a 0.33 A in its winding. A long wire carrying a current of 22 A is parallel to and 1.2 cm from the axis of the solenoid. What is the magnitude of the resulting magnetic field at a point on the axis of the solenoid?

Physics
A long solenoid ( radius = 1.8 cm) has a current of a 0.33 A in its winding. A long wire carrying a current of 22 A is parallel to and 1.2 cm from the axis of the solenoid. What is the magnitude of the resulting magnetic field at a point on the axis of the solenoid?

Physics
A long solenoid ( radius = 1.8 cm) has a current of a 0.33 A in its winding. A long wire carrying a current of 22 A is parallel to and 1.2 cm from the axis of the solenoid. What is the magnitude of the resulting magnetic field at a point on the axis of the solenoid?

Physics
A long solenoid ( radius = 1.8 cm) has a current of a 0.33 A in its winding. A long wire carrying a current of 22 A is parallel to and 1.2 cm from the axis of the solenoid. What is the magnitude of the resulting magnetic field at a point on the axis of the solenoid?

Physics
A long solenoid ( radius = 1.8 cm) has a current of a 0.33 A in its winding. A long wire carrying a current of 22 A is parallel to and 1.2 cm from the axis of the solenoid. What is the magnitude of the resulting magnetic field at a point on the axis of the solenoid?

3rd grade math
31+7

geometry
A rectangular garden 10m * 18m . Find the area of a sidewalk that is 2m from the side of a garden ?

geometry
How many boxes that is 5" * 4" * 3" could be placed inside a big box of 40" * 32" * 24" ??

Physics
The mass of an astronaut is 72kg. (a) what is his weight on earth ( taking g to be 10N/kg) ? (b) if the astronaut is on the moon's surface where the acceleration due to gravity is one-sixth on the earth , calculate (I) the mass (ii) the weight of the astronaut Thanks for h...

Physics
Thanks !!! :)

Physics
A lift is pulled up to the top of a building by a constant force of 6400N at a constant speed of 2m/s. It takes 3mins to reach the top. (a) how much work is done in raising the lift to the top of the building ? (b) what is the power required ?

Chemistry
How will the equilibrium: Heat energy + CH4 + 2H2S = CS2 + 4H2 be affected by the following? a) A decrease in temperature? b) The addition of H2 c) The removal of some CH4 d) An increase in the volume of the container e) The addiotion of a catalyst. i know that [CH4] goes up, ...

economics
what cause the financial crisis that occurred in 2008

Maths SUPER URGENT
Thanks. Talked to my Dad. Told me to assume that the down pipes had a width of 200mm as this is for a school auditoriam. @ drwls. Yes, the roof area has already been taken into account @ bobpursley. how would i design for max rainfall? The school is in the desert.

Maths SUPER URGENT
Hey What size down pipe would I need, and how many if my roof area equals 1224.78 metres squared and I have average rainfall of 173kl per year? Also how much plumbing would I need from my hypothetical tanks?

Microecinomics
Opportunity cost is represented by what you're losing by choosing one option. For example, by going to the movies your opportunity cost is doing your homework. Therefore, the opportunity cost of producing potatoes is 50 chickens. The opportunity cost of producing chickens ...

Chemistry for Engineers
A gas is confined to a container with a massless piston at the top. (Part C figure) A massless wire is attached to the piston. When an external pressure of 2.00 atm is applied to the wire, the gas compresses from 4.90 to 2.45 L. When the external pressure is increased to 2.50 ...

chemistry
A gas is confined to a container with a massless piston at the top. (Part C figure) A massless wire is attached to the piston. When an external pressure of 2.00 atm is applied to the wire, the gas compresses from 4.90 to 2.45 L. When the external pressure is increased to 2.50a...

pre algebra
If the question is what is the product of (8x^5-5x)(7x^3) you can find this by using the FOIL method. i.e-(8x^5)(7x^3)-(5x)(7x^3)= 56x^5+3-35x1+3= 56x^8-35x^4

math
Speed of gravity: 9.8meters/second Given 0.02 seconds, you can use conversion method. 9.8m/s*0.02seconds=0.196meters

Algerbra
This is a system of equations. x-y=8 x+y=-2 The easiest way to solve would be the elimination method because it is already set up; if you add the equations, the y cancels out and gives you: 2x=6 Further, x=3 Given x you can find y in any equation above; x-y=8 Substitute the 3:...

math
Anonymous is right. m is the slope of the line and b is the y intercept. So the graph will have a negative slope of (rise/run) -2/3 and it will cross the axis at y=45

Algebra
Well, you could multiply everything by 100 to get an easier function: y=-3x^2+14x+143 in which you could try and use the quadratic theorem [-b +/- sqrt(b^2-4ac)]/2a Giving you: -14 +/- sqrt(196-(-1716)/-60 [-14 +/- sqrt(1912) ]/-6 You cant simplify too much. But you get the id...

world history
Many early historians tended to look at the past in terms of

physiC
A uniform door (0.81 m wide and 2.1 m high) weighs 150 N and is hung on two hinges that fasten the long left side of the door to a vertical wall. The hinges are 1.9 m apart. Assume that the lower hinge bears all the weight of the door. Determine the magnitude and direction of ...

world history
Which of the following was the first known king of Mesopotamia? A. Sargon B. Lipit-Ishtar C. Hammurabi D. Gilgamesh

Health, Safety, and Nutrition (Penn Foster)
How dare you direct me to that web site for cheating!!!!!!!!!

Health, Safety, and Nutrition (Penn Foster)
Health, Safety, and Nutrition 1. Today in class you’re going to talk to your students about Vitamin C and what it does for a person’s body. From which one of the following food groups should you select your snack for today? A. Bread, cereal, rice, and pasta group B. ...

child development
Thanks Ms. Sue

child development
B?

child development
(Penn Foster) 1- Neueon development and elaboration, which occurs between birth and age 10, is prompted by: A -aural prompts from the famiy school and environment. B-physical movement on the part of the child C- Intake of foods rich in vitamins and minerals D- exposures to dif...

world history
i need the answers too!

8th grade History
Have a nice Day.

8th grade History
Thank you

8th grade History
However, thank you for answering my questions. Have a good day! :-)

8th grade History
i already did go to google. there is nothing. I searched and searched.

8th grade History
my teachers say not to go there. :(

8th grade History
Wikipedia is not a reliable source. Please do not enter wikipedia.

8th grade History
Where was the site of the Battle of Fort Sumter in the Civil War? Thanks!

8th grade History
Thanks Jeff!

8th grade History
Where was the site for the Battle of Gettysburg in the Civil War? Thanks!

8th grade science
I need help figuring out this on a food web. It goes from a flower to a butterfly to a frog to the bird to a coyote. Now I have to label them. I got them all however i do not know what the frog and bird is. HELP!! :-)

8th grade science
No because they eat primary consumers. Thanks!

8th grade science
Can a secondary consumer be eaten by another secondary consumer? Thanks! :-)

8th grade science
*please post your question some other place where it can be properly answered and so can mine. Thank you.*

8th grade science
For my quiz some of these questions confuse me. Your genome is over 99% identical to every other human on earth. True False 3 points Save All living things on earth share certain identical sequences of bases on their genome. True False and... Question 8 3 points Save The bases...

8th grade Math
:)

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