# Posts by roger

Total # Posts: 293

Civics practice history
Which of the following provides the definition of a nation?

\math/
i meant what is 2/3 x 1/2 remember to simplify to lowest term

\math/
what is 2/6 x 1/2 remember to simplify to lowest term

|MATH|
what is 2/6 x 1/2?

|MATH|
how do i divide 1/6 by 2/6

Math
how do i divide 1/6 by 2/6

Math
Find the area and the perimeter of this figure. 5 in. Square.

Math
DJ was thinking of a number. He said it had 2 digits, it ended in 5, and the number in the tens place was a 4. What number was he thinking of?

Calculus
An explosion causes debris to rise vertically with an initial velocity of 160 feet per second. In how many seconds does it attain maximum height? i know i need to use the formula: y(t)=-16t^2+Vot + yo Have: vo=160 Yo= is what i am trying to find and i dont know how to solve ...

Chemistry AP
Determine the value of x in al2(so4)3 . xh2o when 4 grams of aluminum sulfate hydrate was heated and 3.5 grams remain. (show working please)

Math
\$222.00

Math
Shawn Bixby borrowed \$22,000 on a 150-day, 13% note. After 75 days, Shawn paid \$2,500 on the note. On day 106, Shawn paid an additional \$4,500. Use ordinary interest. What is the total interest and ending balance due?

Accounting
Value of \$40000 compounded at 5% annually for 35 years

math
A ship sails 50km on a bearing of 080 degrees calculate how far east it travels to the nearest tenth

Chemistry
A sample of hydrogen gas (H2) is produced in a laboratory by displacement of water. A 645 mL sample of hydrogen is collected at 25 degrees Celsius and a total pressure of 758 torr. Collecting gas by water displacement causes the gas to become saturated with gaseous water vapor...

precalc
use the sum to product formula to simplify sin 42degrees+sin 18 degrees=sin A degrees 0<A<90 degrees A=???degrees

algebra word problem
well, Two of the sides would have to be either 5 or 3. Because 5+5+6=16 and 5x6=30 or 3+3+10=16 and 3x10=30. Does this help?

Math
the number of blocks has 9 in the ones place. The number in the hundreds place is one more than the number in the tens place. Those two numbers equal 11. how many blocks are there.

Math

Thanks i get it now.

thanks ms.sue but where did the 0.5 come from?

Bread has gone sale at the supermarket. the sale price is \$3.50 per loaf and the original price was \$4.00 per loaf? whats the percent decrease from original price to sale price?

Algebra
Austin drove to the mountains last weekend. There was heavy traffic on the way there, and the trip took 8 hours. When Austin drove home, there was no traffic and the trip only took 5 hours. If his average rate was 21 miles per hour faster on the trip home, how far away does ...

algebra
What is the axis of symmetry in -7/x^2-4

algebra
I get f(5)=2*5^2-20*5+5=2*25-100+5=50-100+5=55 not sure what doing wrong

algebra
f(x)=2x^2-20x+5 find vertex is(5,55)correct

Math
What is the relationship between the side length and the apothem of an equilateral triangle?

Geometry
What is the relationship between the side length and the apothem of an equilateral triangle?

Geometry
what is the relationship between the side length and the apothem in a regular hexagon?

U.S. History
a??

U.S. History
Which statement BEST distinguishes the Viet Cong from the North Vietnamese Army? A) The North Vietnamese Army fought beside the allied forces, while the Viet Cong fought against the allied forces. B) The North Vietnamese Army represented the political interests of North ...

U.S. History
What effect did the demobilization that followed World War I have on the American workforce? A) Members of labor unions were viewed as disloyal and were monitored by the FBI. B) Thousands of women and African-Americans lost their jobs as returning servicemen reentered the ...

Probability
The numbers 1 to 15 are placed in a hat, and a number is selected. What is the probability that the number is 4 given it is known to be an even number?

Probability
If three people are randomly selected, find the probability that they will all have birthdays on the same day of the year.

Physics
The white ball in the figure has a speed of 1.67 m/s and the yellow ball is at rest prior to an elastic glancing collision. After the collision the white ball has a speed of 1.43 m/s. To the nearest tenth of a degree, measured counterclockwise from east, what angle does it ...

Finance
A caller informs you that it will take a \$70,000 down payment and the investelemt will return \$10,000 a year for the next 10 years. He tells you that you that the investment will return 14 percent. If current interest rates are 8 percent, what is the present value of this ...

Geo
What is state that only 2 seasons????

calculus
use a linear approximation to estimate (8.2)^(2/3)

Calculus 1
Write a function that has two infinite limits at two different x-values. Write a function where both one sided limits exist at some x value but the two sided limit do not. I don't understand how this would look, please help!

algebra 2 help

algebra 2 help
if 3abs(x+4)=8, then x=? A. {-10,2} B. {-2,2} C. {-19,11} D. {-22,-14} which one? idek I think is B but i am not sure help

algebra 2
simplify the compound fraction: ((x+h)^(-3)-x^(-3))/(h)

alegebra 2 Help
thats the answer damon sum=x^3 +3hx^2 +3h^2x+ h^3

alegebra 2 Help
idek the next step damon

alegebra 2 Help
simplify the compound fraction: ((x+h)^(-3)-x^(-3))/(h) where do i start?

Algebra
Find the number of decibels for the power of the sound given. Round to the nearest decibel. A rocket engine, 2.50 * 10^5 watts cm^2 what is the db?

physics
a horse is running with an initial velocity of 11m/s and begins to accelerate at -1.81m/s^2. how long does it take for the horse to stop?

physics
how long will it take the sound of the starting gun to reach the ears of the sprinters if the starter is stationed at the finish line for a 100 meter race? assume that the sound has a speed of about 340m/s.

maths
Sir, I am also getting this as the answer. but the options given are :- a). 2.45 b). 2.3 c). 1.33 d). 1.56

maths
A man goes upstream for a distance of 10 kms in 5 hours. Another man goes downstream the same distance of 10 kms in 3 hours. what is the difference in speeds of two men if the river speed is 0.5 km/hr

ap chem
At what angle (in degrees) must {111} planes of platinum (Pt) be exposed to a collimated beam of thee X-rays in order to obtain by diffraction monochromatic CrKα radiation. ---- I know the relation between d and h+k+l but what does it mean the collimated beam stuff?

Finance
4. Your program plans to acquire a total of 600 end items costing \$535 million over a five-year period. The first production contract is to be awarded in FY04. The number of items to be procured (not delivered) each year and their estimated cost (in then-year dollars) is shown...

physics
a stone is projected upward with a speed of 80.0ft/s from a 224 ft tower. find the maximum height and the speed at which it strikes the ground.

physics
a rock is thrown vertically down from a bridge with an initial velocity of 30m/s and strikes the water in 2.0sec. find the velocity with which the rock strikes and the height of the bridge.

physics
a stone is thrown straight upward and rises to a maximum vertical height of 40.0m. with what velocity was it thrown and how long does it take for the stone to return to the initial level from which it was thrown?

physics
a steel ball dropped from a tower strikes the ground in 3.0 seconds. Find the velocity with which the ball strikes the ground and the height of the tower in meters.

physics
at the start of a race , a horse accelerates out of the gate at a rate of 3.00m/s squared. how long does it take the horse to cover the first 25.0m of the race?

physics
on a trip a car covers 42.3 miles in 40.0 minutes. find the average velocity in m/s and km/hr

physics
A boy on a motor scooter is traveling at a velocity of 14.1 m/s when he applies his brakes in order to stop. How much time will it take him to stop if he slows down at a rate of 3.2 m/s2?

physics
A motorist is driving at a constant velocity of 28 m/s when he decides to pass a car that is in front of him. He accelerates at a rate of 2.5 m/s2 for 3.0 seconds while passing the car. What is his velocity at the end of the 3.0 seconds?

Chemistry
Please help me solve this empirical formula.Im so confused C=58.5% H=4.1% N=11.4% and O=26.0% Thank you so much

Government
family

physics
An infinitely long thin metal strip of width w=12cm carries a current of I=10A that is uniformly distributed across its cross section. What is the magnetic field at point P a distance a=3cm above the center of the strip as shown? This one requires some integration! I suggest ...

physics
A series RLC circuit is made with a C=100pF capacitor, an L=100μH inductor, and an R=30Ω resistor. The circuit is driven at 5×106rad/s with a 1V amplitude. What is the current oscillation amplitude in amps

physics
A series RLC circuit is made with a C=100pF capacitor, an L=100μH inductor, and an R=30Ω resistor. The circuit is driven at 5×106rad/s with a 1V amplitude. What is the current oscillation amplitude in amps

physics
Consider a coaxial cable with 2Amps in the center conductor coming out of the page, and 1Amp in the outer conductor going into the page. The center conductor has a radius of 1mm, the outer conductor's inner radius is 2mm, and the outer conductor's outter radius is 3mm...

statistics
Suppose the average body temp is 98.6 assume the variable is normally distributed with a standard deviation of .74 degrees. suppose a sample of 100 is taken. what is the probability that the mean is below 98.4??? Between 98.5 AND 98.7??

statistics
the average act score submitted to a certain university is 26. to be eligible for admission, a student must score in the top 6% of applicants. if the scores are normally distributed with a standard deviation of 2.4, what is the minimum score needed to be considered for admission?

Physics
A baggage cart full of luggage is coasting at a speed vA across the airport taxiway. When eighteen percent of the mass of the cart and luggage is thrown off the cart, parallel to the ground and in the forward direction, the cart is brought to a halt. If the direction in which ...

Physics
A hailstone traveling with a velocity of 43 meters/second comes to a virtual stop 0.28 seconds after hitting water. What is the magnitude of its acceleration in the water?

English
I e-mailed him yesterday. This is the correct answer.

math
can some one tell me the simplified cube radical form of (64x^5y^7)^1/3

Physics
Automobile Airbags. The human body can survive an acceleration trauma incident (sudden stop) if the magnitude of the acceleration is less than 250 m/s2. If you are in an automobile accident with an initial speed of 60 km/h (37 mi/h) and you are stopped by an airbag that ...

Social studies
In which colony were people most likely to make their living by fishing. A. New Hampshire B. North Carolina C. Pennsylvania D. Massachusetts E. Virginia I put d am I correct

Mathis
I am sooty I made a mistake with the question it is 187 not 186 and I still don't understand where you get 7 and 9 from

Mathis
Fiona is dissatisfied with her current weekly salary. If she received a raise of \$0.50 per hour and worked an additional 4 hours each week her weekly salary would then be \$500. What is Fiona current salary a) \$380 b)\$400 c)\$420 d)440 e) not e ought information I put d can you ...

Physics

pyhsic question for count iblis
ibis ,I beg to differ,the door slowly open because the ball bounces back elastically,please don't be certain,when u are wrong

Science
6.58

Physics
26.5

math
alicie plans to use a square iece of plywood forthe tabletop. She wants to put tiles on each outside edge of th taletop Each tile measures 2 inche by 2 inches of each outside edge of the tableop

science
According to Newton's second law of motion, _____? A. F = mv B. F = m/a C. a = Fnet /m D. F = ma I think it is B..?

economics?
If you were president, would you be more interested in your economic advisors' positive views or their normative views ? Why ?

Math
3 times the square root of 4/9

not sure where to begin
In what ways is your standard of living different from that of your parents or grandparents when they were your age? Why have these changes occurred ?

pre alger
Suppose that a car normally sells for \$16,500 and is now on sale for \$14,000. What is the percent of discount? If necessary, round your answer to the nearest tenth.

biology
Think of diets from an energy perspective. Where is the energy coming from, and how many organisms does it move through before it gets to the human? In what form is most of the energy in when it gets to the human, and how is that energy unleashed by the body?

biology
Apply the Law of Conservation of Energy to food. Trace the energy from its beginning point, to the point where it was stored or used.

biology
Apply the concept of RESPIRATION. What happens inside of a human being when he or she eats various foods? During Respiration, is the energy in the food converted into heat, or into some other chemical (name the chemical!)

aCCOUTNING
explain how improperly counting ending inventory affects the income statement and the balance sheet

biology
Can a snail survive in an aquarium with no living plants in it? What do fish owners do to compensate if their aquarium has no plants?

biology
oh, a snail and Elodea

biology
27. Pretend you are a carbon atom that was part of a molecule of CO2 dissolved in the water at the beginning of the experiment. Describe a path you could take through both organisms in this experiment, including the molecules you would be a part of and the chemical reactions ...

biology
People with a lactose intolerance are able to take products such as Lactaid that contain the lactase enzyme with their meals. These products can be taken in pill form. Considering the fact that the pill form of the enzyme would have to travel through the person's stomach, ...

biology
substrate concentration and pH affect enzyme activity. Is there another environmental condition you think could affect enzyme activity How would you test your hypothesis?

biology
30. Enzymes function most efficiently at the temperature of a typical cell, which is 37 degrees Celsius. Increases or decreases in temperature can significantly lower the reaction rate. What does this suggest about the importance of temperature-regulating mechanisms in ...

economics
data collected in the imaginary economy of karabekiar reveals that when price of bork increased by 20%, the quantity of bork sold decreased by 15% and the quantity of perf demanded decreased by 10% what is the cross-price elasticity of demand between perf and bork?