# Posts by glenn

Total # Posts: 91

**Math**

I've tried looking at similar problems but I'm still confused.

**Math**

Professor Beaker has a 50-milliliter solution containing 60% acid. How many milliliters of pure water should he add to this solution to produce a solution containing 40% acid?

**Math**

Two cars are 30 miles apart and moving toward each other on the same highway. One car is going 10 miles per hour faster than the other. How fast is each of the cars going if they pass each other 15 minutes later?

**math**

a room is 30 ft long, 25 ft wide and 14 ft high. if 42 balloons are inside the room, how many cubic feet of space does this allow for each balloon?

**Trigonometry**

Substitute y for 77 Get sin by itself, divide by 7 on both sides Consider everything in the parenthesis of sin as theta, then solve using sin^-1 77 = 7sin(theta)+80 -3 = 7sin(theta) -3/7 = sin(theta) or sin^-1(-3/7)=theta take the answer to sin^-1(3/7) and then operate on it ...

**uv,,math**

find the distance between the cities,,assume that thee earth is a sphere radius of 4000 miles at that cities are on same longitude, one city is due north of the order,,,San Francisco California has 37 degree 47'36" while Seattle,Washington 47 degree 37'18"

**physics**

a heavy object is dropped from the top of a 25 m tall building and it reaches the ground in 2.26 seconds determine the acceleration due to gravity how far did the object fall during the first second how far did the object fall during the 2nd second

**physics**

the maximum possible speed a certain car can achieve is 80 m/s (about 180 mph) the car covers a distance of 1km while accelerating up to this speed from rest how fast is the car moving at the halfway point of 500m (the answer is not 40m/s) at what point is the car moving at ...

**physics**

the driver of a truck going 50 mph applies the brakes giving the truck a deceleration of 4.5 m/s^2 how long will it take the truck to come to a complete stop what distance will it cover

**physics**

a driver traveling 42 mph speeds up to 58 mph over distance of 660 feet how long does this increase in speed take what is the driver's acceleration

**physics**

a sports car can accelerate fo 0 to 60 in 3.2seconds what is the acceleration of the car in m/s^2 what distance would it travel at this time

**physics**

a 10k race was held the first place finisher completed the 10km run in 29.5 minutes what was the average speed in miles per hour. In another race the person is given a head start and if they beat the first place finisher at the end the win $2,500 the chosen winner was given a ...

**physics**

you live 6 miles away from a movie theatre on a particular day it takes you 18 minutes to get to the movie theatre from your house, only half as much time to get home what was your average speed in mph for driving from the theatre, driving home , and the full round trip?

**physics**

suppose you are able to run at a constant speed of 11mph how long would it take you to run a marathon which is 26.2 miles? what percent of the marathon would you have completed after running 30 minutes?

**physics**

a man walks 0.9 miles around a shopping mall in half an hour what is his speed in miles per hour, in meters per second, and kilometers per day/?

**physics**

a woman walks along a circular path of radius of 15m it takes her 2min to get halfway around the path at this halfway point what is her approximate distance traveled, displacement, average speed in m/s, and average velocity in m/s?

**physics**

a dog runs at a speed of 4m/s how many minutes does It take the dog to go 1 km?

**physics**

a man walks 0.9 miles around a shopping mall in a half an hour what is the speed in miles per hour in meters per second and in kilometers per day

**phyics**

a dog runs at a speed of 4m/s how many minutes does It take the dog to go 1 km?

**physics**

a woman drives at a speed of 70 mph how many miles does she travel in 24 minutes

**Solid Mensuration 04/15/16**

Given trinagle ABC whose sides are AB=15 in., AC=25 in., and BC=30 in. Form a point D on the side AB, a line DE i drawn to a pointE on side AC such that angle ADE is equal to angle ABC. If the perimeter of triangle ADE is 28 in., find the lengths of line segments BD and CE.

**Other**

What's a good way to tell a human skull from a rock at home

**math**

what is 2015-70 =

**Math**

First you use the known to find the unknown.... U2=22, n=5 U15=62, n=15 You use from the formular Un=a+(n-1)d from the fith term 22=a+(5-1)d 22=a+4d--------equation 1 From the 15th term 62=a+(n-1)d 62=a+(15-1)d 22=a+14d-------equation 2 a+4d=22 you subtract a+14d=62 -10d=-40 d...

**writing**

memorandum help. help to make this better readable for the viewer. Purpose Alternative fuels are becoming an important area of research. There are two main reasons researchers are looking for a new and reliable fuel source. The first is to combat the reliance of the U.S on ...

**writing**

Need help with Achieving a Readable Style. Memorandum TO: Jerry Bradshaw DATE: March 29, 2011 FROM: Bill Jones SUBJECT: The Best Approaches in Alternative Fuel Research Purpose Alternative fuels are becoming an important area of research. There are two main reasons researchers...

**Physics Help**

A car starts from rest and travels with a constant acceleration at a distance of 500 meters.find its velocity at after 30secs. Express your answer in miles/hr in scientific notation? Answer This Question

**Physics Help**

A car starts from rest and travels with a constant acceleration at a distance of 500 meters.find its velocity at after 30secs. Express your answer in miles/hr in scientific notation?

**Trigonometry**

Write the quadratic function whose zeros are: 1. 2+square root of 5, 2-square root of 5 2. 3+7i,3-7i 3. 5±i Please tell me how to get them. I have no clue on how to solve them.

**Trigonometry**

The area of a rectangle is a function of the length when the width is unity. Please answer.. My mind is going crazy ):

**ALGEBRA**

From a survey of 100 college students, a marketing research company found that 35 students owned iPods, 25 owned cars, and 5 owned both cars and iPods How many students owned either a car or an iPod (but not both)? How many students do not own either a car or an iPod? 236 ...

**Chemistry**

An antacid contains 200mg of aluminum hydroxide and 200mg of magnesium hydroxide per capsule. a. How many moles of Al(OH)3 does each capsule contain? b. What is the mas in milligrams of 0.0457 mole of magnesium hydroxide?

**Chemistry**

An antacid contains 200mg of aluminum hydroxide and 200mg of magnesium hydroxide per capsule. a. How many moles of Al(OH)3 does each capsule contain? b. What is the mas in milligrams of 0.0457 mole of magnesium hydroxide?

**Statistics help**

Hello. I managed to solve (a) Expected aggregate weight = 300 x 25 = 7500 lbs Thus, Since 7500 lbs is over the maximum capacity of 4000lbs, The probability is 1.00 (It will definitely be 100% over the capacity) I don't know how to solve (b) though. If you do, do share with...

**physics**

hi.A vehicle weighing 1.3 tonne leaves skid marks 23 meters long.After 15 meters it hit pedestrain.The co efficient of friction is .7 .what was vehicle initial speed at start of skid and at impact.thanks

**math**

hi.A vehicle weighing 1.3 tonne leaves skid marks 23 meters long.After 15 meters it hit pedestrain.The co efficient of friction is .7 .what was vehicle initial speed at start of skid and at impact.thanks

**Science**

At a county fair, a boy takes his teddy bear on the giant Ferris wheel. Unfortunately, at the top of the ride, he accidentally drops his stuffed buddy. The wheel has a diameter of 15.3 m, the bottom of the wheel is 3.37 m above the ground and its rim is moving at a speed of 1....

**programming**

the drive-rite insurance company provides automobile insurance policies for drivers. design a FLOWCHART for the following:

**chemistry**

.035

**chemistry**

if 3.0 moles of nitrogen gas are collected in a 35.0 liter container at 20 C what would be the the pressure exerted on the container in atmospheres

**5th grade math word problems**

A fur jacket cost seven times what a silk scarf cost. If the difference in their cost is $72, what is the cost of each item?

**math**

What is the answer to this math problem. I have 13 apples and pears. How many of each could i have?

**Chemistry**

a compound is made up of iron and oxygen, only. the ratio of iron ions to oxide ions is 2:3 in this compound. the iupac name for this compound is?

**Liinear equations**

Write the equation for this situation the value,V in hundreds of dollars of Bob's stamp collection is 12 dollars more than 1/3 of the age, t(in years)

**PHYSICS**

First calculated the resultant deceleration caused by the breaks using F=MA. F being given as 62500N, and M as 25,000KG. The resultant A is -2.5M/s^2. Then using V^2 = U^2 + 2AS we can calculate the speed of the train after a displacement (s) of 75M. We have been given initial...

**science**

Distinguish Between terminal velocity and free fall. Be able to describe defective gravity on motion and state acceleration rates of falling objects ( due to gravity)

**social studies**

What was the time period Call during the early 1500s where people wanted to reform the church

**social studies**

Who was a english king who broke away from the catholic church And started his own religion

**social studies**

What was the main economic system in the middle ages

**social studies**

What Was Thomas more's book called that explained perfect world and criticize his times?

**social studies**

What was this king's law called which said that the throne would control religion in england SorryMrs Sue

**social studies**

What was the king's law call which said that the throne with control religion in england

**social studies**

Who did joan of arc Believe was leading her army?

**social studies**

What was probably Day Vinci's Most famous painting

**social studies**

Middle age,Renaissance, reformation, revolution, who came up with the system to classify living things?

**social studies**

Middle age, Renaissance, reformmation , revolutions, in what city did that Renaissance begin

**social studies**

Middle age Renaissance, reformation, revolution. How was the plague plague

**math**

If you drop a penny in the basketball form a tall building what happened and why Thank You

**science**

Explain the law of universal gravitation

**science**

The gravitation pull of a object depends 2 factors what are they

**math**

How are potential energy and kinetic energy similar? How are they different. Thank you

**math**

What is mechanical energy

**physics**

How are potential energy and kinetic energy similar. How are they different (thank you)

**physics**

A baseball with a mass .8 k g is traveling at a velocity of 11.8m/s. what is it kinetic energy. Round your answer to the nearest tenth.

**physics**

What happened to the potential energy of an object as it begins to fall? What effort does this have on the mechanical energy?

**social studies**

What event set precedence that alleviated the problem of having no of succession in the empire roman

**math**

A rock with weight of 388 n is on a cliff 1800 m high above head.l bull with a mass of 450 kg is running toward you at a speed up 5.2m/s which is more dangerous (term of energy ) defend your answer

**social studies**

What event set precedence That alleviated the problem of having no law of succession in the empire

**science**

A baseball with a mass of .8 kg is traveling at a velocity of 11.8 m/s. what is it kinetic energy

**social studies**

Before the republicans of the empire what group of people expanded it from the north italy to excompass rome

**History**

what were the roman laws called that were writtin down to ensure equal treatment between the rich and poor?

**History**

what is the term for a government ruled by the people who then elect thier officials?

**Calculus**

Were you drunk when you posted this Steve?

**physics**

A person standing on Earth at 44 degrees 9 minutes North, how fast is he rotating around the Earth in mph?

**chemistry**

predict whether or not a precipitate will form if you mix 75ml of a NaOH solution with pOH = 2.58 with 125ml of a 0.018M MgCl2 solution. Identify the precipitate, if any.

**Statistics**

Given that the mean is 40 and the standard deviation is 1.5: A) what is the probability of selecting a value between 39 and 46 B)what value will allow only 15% of the data to be greater than it

**business**

If the nations of the world were to suddenly cut off all trade with one another, what products might you no longer be able to obtain in your country? (Also discuss where these products are being imported from and the implications for YOUR country having to go without these ...

**math**

What models can be used to help explain the concepts of addition and subtraction of rational numbers? What are the benefits to using such a model? What limitations does the model have? Create an addition or subtraction problem and demonstrate how the model might work. ...

**Statistics**

2-Proprotion test

**Physics**

What is the kinetic energy of an automobile with a mass of 1250 kg traveling at a speed of 11 m/s?

**math**

I'm stuck too. I can't upload a picture but the image contains one of each shape: sphere, cone, cube, rectangle prism, pyramid.

**Physics**

A jet catapult on an aircraft carrier accelerates a 200kg plane uniformly from rest to a launch speed of 320km/h in 2.0s. What is the magnitude of the net force on the plane?

**science**

how much work is done by a crane that lowers 1,000 newtons of material a distance of 150 medters?

**science**

mr mcmurry taked 4327 sips of mountain dew each day. each time he takes a drink he moves the bottle 45cm to his mouth and another 45cm to his mouth and another 45cm back to the table .If the bottle has a massof 567 grams (5.1newtons)how much work does Mr Mcmurry do during the ...

**science**

its called "carbon".. and the process of determining how old a plant or animal is called "carbon dating"

**Algerbra 2**

a) 3(5x+6) = 14x -1 b) 15x+18 =14x-1 c)15x-14x =-1-18 d) x =-19

**Chemistry**

I'm stuck on the concept of negative and positive charges. A dish has 10 + charges and 10 - charges. 2 of the negative charges are taken away. What is the overall charge? I think the answer is 2+ charges

**Math**

-There are 7 girls in a room. -Each girl has 7 backpacks in the room. -In each backpack there are 7 big dogs. -For every big dog, there are 7 puppies too! HOW MANY LEGS ARE IN THE ROOM?

**PHYSICS HELP**

Torque is equal to the change in angular momentum divided by the change in time. Initial angular momentum is equal to the rotational inertia times the angular speed. Final angular momentum is zero because it stopped. Hope this helps!

**history**

an ancient greek astonomer and mathematician named_________

**World Literature**

What literature do you consider to be part of the United States' current literary canon, and why? How do those selections reflect the cultural tradition of the United States? There is no one final list; it should always be rather fluid. But here are some websites that ...