# Posts by terry

Total # Posts: 389

**Physics**

I’m not understanding your answer

**Physics **

Supposed a skydiver ( mass=75kg ) is falling toward the earth. When the skydiver is 100m above the earth he is moving at 60m/s. At this point calculate the skydiver: Gravitational potential energy Kinetic energy Total mechanical energy

**Stats**

Suppose the number of cell phones in a household has a binomial distribution with parameters n = 17, and p = 40 %. Find the probability of a household having (Keep at least 4 digits) (a) 11 or 13 cell phones? (b) 11 or fewer cell phones ? (c) 14 or more cell phones ? (d) fewer...

**Stats**

In the last Canadian census, 2.6% of all Ontario residents declared themselves to be Ukrainian ethnic origin. In a recent survey of 500 Ontario residents, 3.1% of people declared themselves to be of Ukrainian ethnic origin. Using the statistical meanings of the terms, identify...

**chemistry**

why is soap produced from olive oil relatively hard and insoluble?

**Stats**

Wood scientists are interested in replacing solid-wood building material by less expensive products made from wood flakes. Some summary statistics obtained from a study of the relationship between the length (in inches) and the strength (in pounds per square inch) of beams ...

**Stats**

An analyst working for a telecommunications company has been asked to gauge the stress on its cellular networks due to the increasing use of smartphones. She decides to first look at the relationship between the number of minutes customers spent talking on their phones and the...

**Business Math**

A firm of attorneys deposit $5000 of profit sharing money at the end of each semi-annual period for 7.5 years. Find the final amount in the account in the account if the deposits earn 10% compounded semiannually. Find the amount of interest earned.

**Philosophy check my answers**

False dichotomy

**chemistry**

You are making 40g of a 29% (w/w) sucrose solution. what amount of sucrose and water would be used. each in grams please

**riddle**

Institution

**riddle**

Institution

**Math**

In a survey, 175 consumers were asked about their buying preferences concerning a product that is sold in the market under three labels. The results were as follows. 14 buy only those sold under label A. 25 buy only those sold under label B. 28 buy only those sold under label ...

**math **

Eleven graduate students have applied for two available teaching assistantships. In how many ways can these assistantships be awarded among the applicants if (a) No preference is given to any one student? (c) The group of applicants includes seven men and four women and it is ...

**Math **

In how many different ways can a panel of 12 jurors and 2 alternates be chosen from a group of 15 prospective jurors?

**Math **

A student is given a reading list of eight books from which he must select four for an outside reading requirement. In how many ways can he make his selections?

**Pre Calc**

List the elements of the set in roster notation. (Enter O for the empty set.) {x | 7 - x = 6 and x is an integer}

**pre Calc**

Find an equation of the vertical line that passes through (x, y) = (?3, 4).

**pre Calc**

Assume the number of U.S. dial-up Internet households stood at 38.5 million at the beginning of 2004 and was projected to decline at the rate of 3.5 million households per year for the next 9 years. (a) Find a linear function f giving the projected U.S. dial-up Internet ...

**Pre Calc**

The annual sales of Crimson Pharmacy are expected to be given by S = 2.4 + 0.3t million dollars t years from now, whereas the annual sales of Cambridge Pharmacy are expected to be given by S = 1.1 + 0.7t million dollars t years from now. When will Cambridge's annual sales ...

**Pre calc**

Find an equation of the line that passes through the given points. (Let x be the independent variable and y be the dependent variable.) (3, 13) and (4, 20)

**Pre calc**

Find an equation of the line that has slope m and y-intercept b. (Let x be the independent variable and y be the dependent variable.) m = ? 3/2 ; b = 3/4

**Pre Calc**

If the line passing through the points (a, 1) and (2, 8) is parallel to the line passing through the points (12, 6) and (a + 2, 1), what is the value of a?

**Chemistry**

Write an equation for the oxidation of NH2OH to HNO3 by KBrO3. Balance the reaction equation using the ion-electron method.

**english**

How does the author create such a heartwarming feeling in this story? A) by revealing the thoughts and actions of Josh B) by revealing the thoughts and actions of Coach Wilkins C) by revealing the thoughts and actions of Principal Edwards D) by revealing the thoughts and ...

**Science**

Students were given materials to complete a circuit to turn on one light. The materials received were 2 wires,AA battery, and various sizes lightbulbs.What is the variable in the experiment? Wires,battery, size of lightbulb, or time of day

**math**

Write the given expression as the tangent of an angle. tan 7x − tan x/ 1 + tan 7x tan x

**math**

Write the given expression as the cosine of an angle. cos 60° cos 65° − sin 60° sin 65°

**life orientation**

clearly describe a recent corruption and fraud case in the country making headlines in the media:who the players are who got involved,the extent to which it linked to other crimes,role played by the media and that of the state to deal with this crime

**Stats**

The GRE has a combined verbal and quantitative mean of 1000 and standard deviation of 200. Scores range from 200 to 1600. a. what % of the persons score above 1300? b. above 800? c. below 1200? d. above what score do the top 20% of the test-takers score? e. Below what score do...

**math**

1) A rectangular tank, 15 cm long and 20 cm wide, is filled with water to a depth of 12 cm. When a rock is put in, the water level rose to 15 cm. What is the volume of the rock?

**Chemistry**

Use the Table of Thermodynamic Data to decide which of the following reactions have K>1 at 298 K: (i) HCl(g) + NH3(g)-->NH4Cl(s) (ii) 2 Al2O3(s) + 3 Si(s)-->3 SiO2(s) + 4 Al(s) (iii) Fe(s) + H2S(g)-->FeS(s) + H2(g). Which of the products of these reactions are ...

**English**

The cow jumped over the moon what is the subject, verb and object in this sentence.

**Physics**

Thank for the explanation, I knew about momentum but the fact that kinetic energy was mentioned in the question just threw me off.

**Physics**

Does the total kinetic energy of an isolated system necessarily have to be conserved when its total momentum is conserved?

**college pre-calc**

Would a truck that is 12 feet tall and 9 feet wide fit through a parabolic arch that is 15 feet high at the high point and 16 feet wide?

**Physics**

Thanks! so the 100m/min is right?

**Physics**

Consider a circular track with a radius of 200 meters. A runner starts on the east side and runs around the track to a point diametrically opposite her starting point. -What is the magnitude of her displacement? 400m -She then runs the rest of the way around the track to ...

**Words**

word has the same root as diagram? a. agree b. diameter c. grade d. ramp

**Algebra 2**

Find the x and y intercepts for the following parabolas. y=(x+12)^2-144 y=(x-8)^2-4

**math**

Compute the hurdle rate above based on the following.1. Note payable bank $2,000,000.00 with rate of 7.5%, The company has a tax rate of 30%.2. Bank Mortgage Loan $1,000,000.00 with rate of 6% The company has a tax rate of 30%.3. Preferred stock $750,000.00 with coupon rate 10...

**math**

How much of 20% alcohol solution and 50% alcohol solution must be mixted to get 9 liters of 30% alcohol solution?

**Geometry**

The area of a triangle is 30cm^2. What is the base of the triangle if the height is 6 cm?

**Chemistry**

okay thank you very much!

**Chemistry**

So far I have calculated for the moles of ch4 and o2, by the ideal gas law. I then used the molar ratio to find the moles of product from each individual reactant. I determined that the limiting reactant is CH4 (don't know if that's correct). From there would I just ...

**Chemistry**

The apparatus contains methane and oxygen at a temp of 383K. Here is the reaction: CH4(g) + 2O2(g) --> CO2(g) + 2H2O(g) solve for final pressures of all species and the final total pressure, For CH4 the volume = 1.164L the pressure = 6atm For O2 the volume = 0.827L the ...

**Chemistry (Le Chatelier's Principal)**

Methanol has the formula CH3OH and can be produced by the reaction of carbon monoxide with hydrogen gas. CO + 2 H2 ￼<-->￼ ￼CH3OH + heat In an attempt to maximize the yield of methanol (amount of methanol produced), a chemist would try to shift the ...

**Computer**

whats the best topic for a slide show presentation that could capture so much attention of the teens ?? i just cant think of any topic ... thanks for your help in advance :)

**Psychology**

what is the unconditioned stimulus (US), unconditioned response (UR), condition stimulus and conditioned response of this example??? 1.)Art goes to a meeting in New Orleans and tries some oysters at the oysters bar. He likes the taste and eats quite few. Soon he becomes very ...

**Math**

A man hires a car with the fuel tank 5/8 full. He travels 180 miles and is left with 2/8 of a tank. How much fuel will he need to put in the car at the start of his return journey of 200 miles to ensure he has 5/8 of a tank when he gets back with no wasted cost?

**math**

thank you Ms. Sue. I just couldn't really understand the question before, but now I see.

**math**

at the rate of 50 mph a car can travel 14.6 miles for each gallon of gas used. On a trip Mr. Hanson used 12.5 gallons of gas traveling at a speed of 50 mph. the number of miles covered during the trip was:

**math**

you invested $8000 between two accounts paying 7% and 9% annual interest, respectively. If the total interest earned for the year was $600 how much was invested at each rate?

**accounting 100**

000

**accounting 100**

The following items are taken from the financial statements of the Postal Service for the year ending December 31, 2014: Accounts payable $ 18,000 Accounts receivable 11,000 Accumulated depreciation – equipment 28,000 Advertising expense 21,000 Cash 15,000 Owner’s ...

**Physics**

A yo-yo is spun from rest by pulling on the string with a constant tension of 2.0 N. The radius of the inner rod on which the string is strung around is 0.50 cm. The tension is applied for 5.0 seconds after which the yo-yo is observed to spin with an angular velocity of 15 rad...

**Calculus**

A rectangular page is to have a print area of 96 square inches. The top and bottom margins are to be 1.5 inches each and the left and right margins are to be 1 inch each. What dimensions will minimize the total area of the page. I got L=8sqr(2) But I'm not sure how to get...

**Math**

I have a line plot ranging from 0-15. The numbers represent the "number of books read by students." There are no students in 0-1-11-14 or 15. What would the median number of books read by students be? My "incorrect" answer was 7.5! Please help and explain. ...

**critique reasoning**

Alex decides that 21 divided by 3=7 is NOT a true equation. Is Alex correct? Explain

**math**

Critique Reasoning Alex decides that 21 divided by 3 = 7 is NOT a true equation. Is Alex correct? Explain

**physics**

If micheal Jordan has a vertical leap of 1.29 m, what is his take off speed and his hang time(total time to move upwards to the peak and then return to the ground)?

**maths**

How do I plot three points on a graph if the first coordinate is equal to (-2.8) and the other two coordinates are unknown?

**Langarts **

I got a 100% 1:B 2:A 3:B 4:A I got u fam

**Math**

Solve for y: x = (x+1)(x+y)

**Algebra**

What are the complements and supplements of: (y + 20)°. Thx!

**Algebra**

Hi there. Can "x^2 - 10x + 22 = -2" be solved by taking the square root? Can "4x^2 + 8x + 3 = 0" be solved by taking the square root? If so, please show me an explanation.

**Algebra**

Mr. Zerman went shopping. In the first store he spent half of his money plus an additional dollar. At the second store he spent half of his remaining money plus an additional dollar. This pattern continued until he left the fifth store with no money left. How much money did he...

**Honors Physics**

Yes he will at .1m/s.

**Algebra**

A box is to be formed from a rectangular piece of sheet metal by cutting squares measuring 5 inches on a side and then folding the sides. The piece of sheet metal is twice as long as it is wide. If the volume of the box is to be 1760 in^3, what are the dimensions of the ...

**math**

the ratio of girls to boys in the chorus is 3:2. If there are 50 students in chorus, how many boys are there and how many girls?

**Math**

Write this number in word form 408032009

**Optics**

How to find critical angle using n?

**Algebra**

An herbalist has 40 oz of herbs costing $4 per ounce. How many ounces of herbs costing $1 per ounce should be mixed with these 40 oz of herbs to produce a mixture costing $2.20 per ounce? oz

**math**

the sum of my digits is 13, my hundredths place is 3 less than 5, my ones place is 4 more than 3, my thousands place is even, what 4-digit numbers can I be

**statistics**

Construct a 95% prediction interval for the number of hours of sleep for an adult who is 45 years old

**science**

At a murder scene, you have started making an image of a computer’s drive. You’re in the back bedroom of the house, and a small fire has started in the kitchen. If the fire can’t be extinguished, you have only a few minutes to acquire data from a 10 GB hard disk...

**math**

Thanks,now I totally understand

**math**

X+3y+9=0 and x+3y-7=0 are parallel or not ,how to work out,can anyone show me please

**math**

please represent algebraic express 20 less than 19 divided by 3X

**Maths**

Find the derivative of y=1/x at x=1/4 Answer: 1/1/16

**algebra**

The population of Arizona was 4.2 million in 2000 and 6.9 million in 2008. If the population grew exponentially, which one of the following models the population as a function of time (in years since 2000)?

**Physics**

Two masses are connected by a string over an ideal pulley as shown. The coefficient of kinetic friction between m1 and the table surface is 𝜇. Find an expression for their common speed after the blocks have moved a distance L. You can assume that you know: m1, m2, L, ...

**Physics**

0.2295

**Physics**

The flux density through a 200 turn coil of area 8.5*10^-4 m squared changes from 0.03 T to 0.12 T in 15 mins. Calculate the induced emf in the coil.

**Chemistry**

The motor is connected from it's battery and used as a generator.On the axes(vertical is amps and horizontal is time) show the type of current it provides when it is rotated through 2 complete revolutions

**algebra**

Suppose that state’s record high temperature of 102 was set in 1930, and the record low of -14 was set in 1966. What is the range of these temperature extremes?

**algebra**

Complete the table of solutions 7x-2y =-21 X Y (X,Y) 3 ---- (---- , ----) --- 0 (---,---)

**ALGEBRA**

How many inches of molding are needed to produce the square picture frame 13" 1/8

**ALGEBRA**

Complete the table of solutions 7x-2y =-21 X Y (X,Y) 3 ---- (---- , ----) ----- 0 (---,---)

**ALBEBRA**

INPUT ---------- OUTPUT X 2x-x/2 -10 -10

**ALGEBRA**

Suppose that state’s record high temperature of 102 was set in 1930, and the record low -14 of was set in 1966. What is the range of these temperature extremes?

**ALGEBRA**

In the table of solutions, which entry is the y-intercept of the graph and which entry is the x-intercept of the graph? x y (x, y) 4 0 (4, 0) 0 2 (0,2) –4 –4 (–4, –4)

**ALGEBRA**

A student inherited $4,200 and deposits x dollars in American Savings. Write an expression to show how much she has left to deposit in a City Mutual account.

**geometry**

if you add 10% to each side of a triangle what is the % of gain

**Math**

Admission to a museum cost $12 for adults and $7 for children. A group of 35 people attending the museum paid a total of $315 in admission fee. Write a system of equations to represent the situation. Let A represent the number of adults admissions and C represent the number of...

**Chemistry**

Alternative answers: A)10 B)13 C)1.9 D)3.8 E)12

**Science**

Determine the pkb of methylamine if the kb is 4.4*10^-4.

**Algebra**

what is the expression that is equivalent to -2(x-3)

**Science**

runoff does increase ersion

**math**

I am helping my daughter and I need help on this question in the number 57,733 contains two sets of digits in which one digit is ten times as great as the other what are the values of the digits in each set help please!!!!