Tuesday

July 29, 2014

July 29, 2014

Total # Posts: 1,540

**algebra 2**

Find the inverse of each function, if it exists. f(x)=1/3x-5 y=1/3x-5 x=1/3y-5 x-5=1/3y y=the square root of x-5/3

**algebra 2**

3/y-2 -1/y=4/y^-2y 3y/y^-2y - y/y^-2y=4/y^-2y 3y-y=4 2y=4 y=2

**algebra**

2/w+ 4/w-1 = 10/w(w-1) 2(w-1)/w(w-1) + 4w/w(w-1)=10/w(w-1) 2w-2/w(w-1 +/4w/w(w-1= 10(w-1)/w(w-1) 2w-2+4w=10w-10 2w+4w-10w=-10-2 6w-10w=-10-2 -4w=8 w=2

**algebra 2**

x-5 divided by 2 = x-3 divided by x x(x-5) = 2(x-3) x^-5x=2x-6 x^ -7x +6 =0 (x+1) (x-6) x=-1 x=6

**statistics**

Suppose that the ages of students at a particular university average 26 years with a standard deviation of 2.8 years. Consider the sampling distribution of the sample mean age of students in a sample of n = 49. The mean of the sampling distribution is __________

**geometry**

An a-frame cabin is 38 feet across at the base and the roof males an angle of 52 degrees with the ground how tall is the cabin?

**geometry**

A railroad track enters a field 480 feet north of the southwest corner and leaves 340 feet east of the southwest corner what angle does the track make with the south boundary?

**geometry**

thanks

**geometry**

I dont get any of this my teacher never shows us anything i have asked for help and he doesnt

**geometry**

a surveyor on level ground finds the angle of elevation of a 138-foot flagpole to be 47 degrees how far from the base of the pole is the surveyor?

**Cooking easy ideas**

black bean salad with sausage and make a strawberry cheesecake

**geometry**

from the top of a vertical 186 foot cliff the angle of depression of a boat is 13 degrees(angle of depression is measured downward from horizontal) how far is the boat from the observer at the top of the cliff?

**geometry**

the question was suppose to be how far from the base of the wall is the foot of the ladder

**geometry**

a 30 foot ladder leaning against a vertical wall makes an angle of 81 degrees with the ground how far from the base of the pole is the surveyor?

**geometry**

a room is 18 feet long,15 feet wide and has an 8 foot ceiling.a cord is stretched from the floor at the southwest corner to the ceiling at the northeast corner.What angle does the cord make with the floor?

**geometry**

a rectangle is 17 inches wide 29 inches long what angle does the diagonal make with the lengths?

**geometry**

for a guy wire to a tower is 180 feet long and makes an angle of 34 degrees with the tower.If the ground is level,how far from the base of the tower is the anchor part?

**Math**

There is an expression some people use that says, “What you put into it is what you get out of it.” People might use this expression to describe your skills at a sport or activity and how that relates to the amount of time and effort you spend practicing that activi...

**u.s global economics**

what aspects of your decison-making process fit the description of a rational choice? did you consider costs and benifits? did you pay attention to both monentary and non-monetary factors? did you consider opportunity costs and your long-term goals?

**math**

Your optimal exercise heart rate for cardiovascular benefits is calculated as follows: Subtract your age from 220 and then find 80% of the difference. the rate for a 40 year old is 144 and the rate for a 10 year old 168 Rounded to the nearest whole number, the optimal rate for...

**math**

Your optimal exercise heart rate for cardiovascular benefits is calculated as follows: Subtract your age from 220 and then find 80% of the difference. Find the optimal heart rate for a 40-year-old and for a 10-year-old. Rounded to the nearest whole number, the optimal rate for...

**math**

It has been estimated that 0.8% of a certain country's population are homeless. Now 0.8% is a small percentage, but there are approximately 313 million people in the country, and 313 million is a large number. Approximately how many people are homeless? (Round your answer ...

**math**

In 2007, 19.6 percent of a certain country's children were living in poverty. If there were 72.8 million children, what number were living in poverty? Express the amount as a whole number.

**MATH**

On a TV game show, a contestant makes $600 for every correct answer but loses $500 for every wrong answer. After answering 22 questions, Sarah broke even. How many questions did she answer correctly?

**Statistics **

If I'm sampling 50 people and 35 people liked Pepsi instead of Coke how can i apply that to the test statistics for a mean t=x(bar)-mule/s/ square root n

**Chemistry Help Please!!!**

A radioactive substance has a half-life of 4 days. Suppose we have 800 mg of this substance. a) Find the equation of the mass remaining after t days. Use the exact value for k not a decimal approximation. b) Rounding your answer to the nearest tenth of a mg, find the mass rema...

**Calculus Help Please!!! URGENT!!!!**

Carbon-14 has a half-life of 5700 years. In a living organism, the ratio of radioactive carbon-14 to ordinary carbon remains fairly constant during the lifetime of the organism. After the organism’s death no new carbon is integrated into the organism’s remains, so t...

**math**

the radius of a circle is 7n-21 inches. find the circunference of the circle in terms of N. Use 22/7 as an approximation for pi

**English**

Whats the mood of the story and how it makes you feel. How do you think Kafka wants you to feel about Gregor Samsa?

**government**

according to article 2, section 2 the president may grant pardons

**drawing**

MARCO DREW 24 PICTURES HE DREW 1/6 OF THEM IN ART CLASS HOW MANY PICTURES DID MARO DRAW IN ART CLASS

**physics**

A car starts at rest then accelerates at a constant rate to 11.9 m/s in 10.0 seconds. It then slows to 1.5 m/s during the next 5.0 seconds. To the nearest hundredth of a m/s 2 , what is the average acceleration during the first 10.0 seconds?

**physics**

A car starts at rest then accelerates at a constant rate to 11.9 m/s in 10.0 seconds. It then slows to 1.5 m/s during the next 5.0 seconds. To the nearest hundredth of a m/s 2 , what is the average acceleration during the first 10.0 seconds?

**Chemistry **

The ionization constant Ka of an indicator HIn is 1.0x10^-6. The color of the nonionized form is red and that of the ionized form is yellow. What is the color of this indicator in a solution whose pH is 4.00? (The question mentions that you can use the ratio of HIn/In). I NEED...

**math**

i am a number between 60 and 100. my ones digit is two less than my tens digit. i am a prime number. what number am i? explain.

**physics**

The orbital period of Io, one of Jupiter,s moons, is 1.77 days ( 1.53 x 10 to the 5 power). If Io orbits Jupiter at a radius of 4.22 x 10 to the 8 power meters, what is the mass of Jupiter?

**physics**

the distance from the earth to the sun is 1.5 times 10 to the 11 power m ( 93 million miles) and the time for one complete orbit of the earth about the sun is one year. how long would it take a planet located at twice this distance from the sun to complete one orbit?

**Physics**

The distance from the earth to the sun is 1.5 times 10 to the 11 power m ( 93 million miles) and the time it takes for one complete orbit of the earth about the sun is one year. How long would it take for a planet located at twice this distance from the sun to complete one orbit?

**Physics**

A 45kg block slides down an incline that is angled at 41 degrees. If the coefficient of kinetic friction between the block and the incline is 0.45 what is the block's acceleration?

**Physics**

A 10-kg box is at rest on a horizontal frictionless surface, at the end of an unstretched horizontal spring with constant k = 4000 N/m. The mass is then quickly struck with a hammer that imparts an impulse along the horizontal direction, compressing the spring a maximum distan...

**Physics**

A 10-kg box is at rest on a horizontal frictionless surface, at the end of an unstretched horizontal spring with constant k = 4000 N/m. The mass is then quickly struck with a hammer that imparts an impulse along the horizontal direction, compressing the spring a maximum distan...

**geometry**

The angle of depression from a hot air ballon in the air to a person on the ground is 36 degrees. If the person steps back 10ft the new angle of depression is 25 degrees. If the person is 6ft tall, how far off the ground is the hot air ballon?

**english**

It is when you make a sentence that has the same parts of speech structure. Ex: Enchanted and enthralled, I stopped her constantly for details. Imitation: Confused and frustrated, I asked him continuously for answers.

**english**

Can someone please help me make an imitation sentence for the following 2 sentences? 1.) The little shack, the rattling, rotting barn was gray-bitten with sea salt, beaten by the damp wind until they had taken on the color of the granite hills. 2.)The strength that had been as...

**Last math problem help**

Mr. Jarvis invested a total of 10,437 in two savings accounts. One account earns 8% simple interest per year and the other earns 9% simple interest per year. Last year the two investments earned a total of $849.52 in interest. Write a syste of equations to use to determine th...

**Helpppppp**

C+ p=60 4.00c+2.50p=3.00*60 But how after that

**Helpppppp**

The modern grocery has cashews that sell for $4.00 a pound and peanuts that sell for 2.50 a pound. How much of each must Albert the grocer mixed to get 60 pounds of mixture that he can sell for three dollars per pound? Express the problem as a system of linear equations and so...

**Math **

A rental car agency charges $15 per day plus $.11 per mile to rent a certain car. Another agency charges $18 per day plus 8 cents per mile to rent the same car. If they rent the car for one day how many miles will they have to be driven for the cost of a car from the first age...

**Math problem**

How do you solve this

**Math problem**

The modern grocery has cashews that sell for $4.00 a pound and peanuts that sell for 2.50 a pound. How much of each must Albert the grocer mixed to get 60 pounds of mixture that he can sell for three dollars per pound? Express the problem as a system of linear equations and so...

**Problem solving**

A rental car agency charges $15 per day plus $.11 per mile to rent a certain car. Another agency charges $18 per day plus 8 cents per mile to rent the same car. If they rent the car for one day how many miles will they have to be driven for the cost of a car from the first age...

**Problem solving **

A rental car agency charges $15 per day plus $.11 per mile to rent a certain car. Another agency charges $18 per day plus 8 cents per mile to rent the same car. If they rent the car for one day how many miles will they have to be driven for the cost of a car from the first age...

**Problem solving **

A group of 52 people attendance ball game. There are three times as many children as adults in the group. Write a system of equations that you can use to solve this problem where a is the number amd C is the number of children in the group. How many children are in the group

**Problem solving **

A rental car agency charges $15 per day plus $.11 per mile to rent a certain car. Another agency charges $18 per day plus 8 cents per mile to rent the same car. If they rent the car for one day how many miles will they have to be driven for the cost of a car from the first age...

**Story problem**

A group of 52 people attendance ball game. There are three times as many children as adults in the group. Write a system of equations that you can use to solve this problem where a is the number amd C is the number of children in the group. How many children are in the group

**Story problem help Damon**

Stan bought 3 boxes of fruit loops and 2 boxes of kix for $15.05. One box of fruit loops cost $0.60 more than one box of kix. How much does one box of each type of cereal cost

**Story problem heellp**

The difference of two complementary angles is 18. What is the measure if the two angles Hint complementary angles sum to 90 degrees

**Story problem**

The perimeter of a rectangle garden is 104 ft. The length of the garden is 8 less than twice the width. What are the dimensions of the garden.

**Story problem**

( hint complementary angles sum to 90 degrees

**Story problem**

The difference of two complementary angles is 18. What is the measure if the two angles

**Math**

When solving a system algebrically how can you tell if solution is the equation of the line

**Math**

When solving a system algebraically how can you tell if there is no solution

**Math**

Elimination X+2y=5 -3x+6y=15

**Math**

Elimination 4x-7y=23 3y=-6x+33

** math mrs sue**

Elimination X+2y=5 -3x+6y=15

**Mrs sueeee**

Substitution X-6y=4 3x-18y=4

**Math help mrs sue**

When solving A system by graphing how can you tell if the solution is the equation of the line

**Math**

Substitution X-6y=4 3x-18y=4

**Math**

When solving A system by graphing how can you tell if the solution is the equation of the line

**physics**

A 1200kg car travels at a constant speed of 12 m/s around a horizontal, circular track with a radius of 45m. What is the magnitude of the centripetal for

**physics**

Mayan kings and many school sports teams are named for the puma, cougar, or mountain lion Felis concolor, the best jumper among animals. It can jump to a height of 11.2 ft when leaving the ground at an angle of 43.8°. With what speed, in SI units, does it leave the ground...

**math***help plz*****

please help me with math. A car travels 132 miles using 4 gallons of gas.At that rate,how far can the car travel using 7 gallons of gas? A.231 miles B.264 miles C.134 miles D.1,260 miles

**Language arts(CHECK ANSWERS)**

please help... Which of the following signal words could identify a problem-solution text structure? A.first B.i think C.therefore(I PICK THIS)

**language arts**

please help... Which of the following signal words could identify a problem-solution text structure? A.first B.i think(I PICK THIS) C.therefore

**science(CHECK ANSWERS)**

which of the following is the best example of transforming electromagnetic energy into thermal energy? A.when trees absorb sunlight for photosynthesis. B.when the interior of a car absorbs sunlight and warms up.(I PICK THIS) C.when a solar panel absorbs sunlight to make electr...

**science(CHECK ANSWERS)**

which of the following is the best example of transforming electromagnetic energy into thermal energy? A.when trees absorb sunlight for photosynthesis. B.when the interior of a car absorbs sunlight and warms up. C.when a solar panel absorbs sunlight to make electricity (I PICK...

**sciene(HELP)**

I know but I made a new answer because u said it was wrong

**sciene(HELP)**

which of the following is the best example of transforming electromagnetic energy into thermal energy? A.when trees absorb sunlight for photosynthesis. B.when the interior of a car absorbs sunlight and warms up. C.when a solar panel absorbs sunlight to make electricity (I PICK...

**science(CHECK ANSWERS)**

I PICKED A

**science(CHECK ANSWERS)**

can anyone answer my question?? which of the following is the best example of transforming electromagnetic energy into thermal energy? A.when trees absorb sunlight for photosynthesis. B.when the interior of a car absorbs sunlight and warms up. C.when a solar panel absorbs sunl...

**science(check asnwer) !!**

please check my answer shoe companies imbed unique designs on the bottoms of the sneakers they manufacture.what is the main purpose of the designs on the bottoms of sneakers? A.to increase potential energy B. to decrease friction C. To increase friction(I PICK THIS) D. To decr...

**science (check new answer)**

please check my answser .A car driver accelerates to a speed of 35 mph and then takes her foot of the gas pedal.Even though she does not press the brake pedal at any time,she eventually rolls to a stop.which of the following most likely causes the car to come to a stop? A.kine...

**Science help.**

or are you 6th or 7th cuz this test looks famililar to me

**science**

C?

**science**

what answer choice is that??

**science**

please help me im stuck on this last one !! .A car driver accelerates to a speed of 35 mph and then takes her foot of the gas pedal.Even though she does not press the brake pedal at any time,she eventually rolls to a stop.which of the following most likely causes the car to co...

**Chemistry**

A particular brand of gasoline has a density of 0.737 g/mL at 25 ∘C. How many grams of this gasoline would fill a 15.1gal tank?

**Chemistry**

While in Europe, if you drive 109km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 23.0mi/gal ? Assume that 1euro=1.26dollars.

**PLEASE HELP MRS SUE**

THE PERIMETER OF A RECTANGULAR GARDEN IS 40 METERS. THE LENGTH OF THE GARDEN IS 1 METER LESS THAN TWICE ITS WIDTH WHAT ARE THE DIMENSIONS OF THE GARDEN?

**math**

the perimeter of a rectangular garden is 40 meters. the length of the garden is 1 meter less than twice its with. what are the dimensions of the garden?

**math**

Ok then the rest

**math**

last year, 2713 teachers attended a technology conference. if there were 163 more men than women at the conference, how many men and how many women attended?

**math**

last year, 2713 teachers attended a technology conference. if there were 163 more men than women at the conference, how many men and how many women attended?

**math (eliminations)**

5x=-3y-9 2x-5y=-16 elimination

**math**

wait elina how do you solve it

**math**

the perimeter of a rectangular garden is 40 meters. the length of the garden is 1 meter less than twice its with. what are the dimensions of the garden?

**math**

last year, 2713 teachers attended a technology conference. if there were 163 more men than women at the conference, how many men and how many women attended?

**Chemistry**

Given the reactant side of the total ionic equation for the neutralization reaction of ammonium hydroxide (NH4OH) with hydrochloric acid (HCl), write the total ionic equation (also known as the complete ionic equation) by entering both the reactant and the product species, sep...

**Geometry/Math**

Judy lies on the ground 45 feet from her tent. Both the top of the tent and the top of a tall cliff are in her line of sight Her tent is 10 feet tall. About how is the cliff? Assume the two triangles are similar. Postscript: The distance from the tent to the cliff is 400 feet....

**Math**

estimate each product or quotient 1/3 x 29

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