Saturday

April 19, 2014

April 19, 2014

Total # Posts: 633

**Math**

if the ratio of the girls to boys in a classroom is 2 to 3 why isnt it correct to say 2/3 (two thirds) of the class are girls.

**Chem**

The molecular weight of CaCl2 is 110.98 g/mol. In order to make up 500.0 ml of a 0.500 M solution, you need how many g?

**physics**

A 55 kg hiker starts at an elevation of 1600 m and climbs to the top of a 3400 m peak. (a) What is the hiker's change in potential energy?

**maths**

suers!!

**Algebra**

well did u know u should find something called a tutor program to help you? IDIOTS!!!!

**Algebra**

well did u know u should find something called a tutor program to help you? IDIOTS!!!!

**gen chem**

moms?

**gen chem**

The recommended dosage of iodine-131 is uCi/kg of body weight. How many microcuries of iodine-131 are needed for a patient with the hyperthyroidism?

**Algebra II**

The first 3 terms in a geometric sequence are 1.1, 1.65, and 2.475. Part A: What is the sum of the first 6 terms of the sequence? Show your work. Part B: How does the sum of the series differ from the 6th term? Explain. Part C: If the nth term in this sequence represents the t...

**ALGEBRA**

Suppose you have a $1,000 charge on a credit card charging 1.5% monthly interest using the adjusted balance method. The minimum payment due in May is $20. How much will you save in interest charges in June by paying $40 instead? I had $8,234.65

**ALGEBRA**

Find the ending balance in an account that opens with $5,000, earns 7.5% interest compounded quarterly, and is held for 20 years. (Round your answer to the nearest cent.)

**ALGEBRA**

A certain lock has four tumblers, and each tumbler can assume three positions. How many different possibilities are there?

**ALGEBRA**

A car dealer will sell you a used car for $6,162 with $162 down and payments of $214.67 per month for 36 months. What is the simple interest rate? (Round each answer to the nearest tenth.)

**ALGEBRA**

Answer the question and tell whether it illustrates inductive or deductive reasoning. (a) What is the 50th consecutive even number?

**ALGEBRA**

Find the amount of compound interest earned in an account that opens with $23,000, earns 3.9% interest compounded daily, and is held for 15 years. Assume 360 days in a year. (Round your answer to the nearest cent.)

**ALGEBRA**

An oil-drilling company knows that it costs $28,000 to sink a test well. If oil is hit, the income for the drilling company will be $445,000. If only natural gas is hit, the income will be $145,000. If nothing is hit, there will be no income. If the probability of hitting oil ...

**ALGEBRA**

Evaluate the expression. \( _3^12 \)

**ALGEBRA**

Evaluate the expression. \( _3^10 \) \( _4^5 \) \( _1^4 \)

**Algebra II**

A cowboy is practicing his lassoing technique by lassoing the fence posts at his ranch. Consider that is lariat forms a perecly elliptical shape centered at the origin while he twirls it. If the fence posts are 2 inches in circumference and the cowboy would lik to add 5 inches...

**SUPER URGENT-- CHEMISTRY**

1. .0025 M tartric acid completely reacts with .0030 m of al bicarbonate if .913 l of co2 forms at 298 k with pressure of 1.4 ATM how much base used? 2. 3.1 x 10^23 molec of .0035 m hydriodic acid reacts with 25 g of magnesium bicarbonate how much carbon dioxide if at stp? 3. ...

**Chemistry**

URGENT!!!!! 4 questions total! 1. .0025 M tartric acid completely reacts with .0030 m of al bicarbonate if .913 l of co2 forms at 298 k with pressure of 1.4 ATM how much base used? 2. 3.1 x 10^23 molec of .0035 m hydriodic acid reacts with 25 g of magnesium bicarbonate how muc...

**maths**

1.) 7:15

**stuck**

a.) as x increases by one, you multiply by the next multiple of 3 to get y. 1x3=3, 2x6=12, 3x9=27, etc. b.) if x=5 then y=75

**algebra 2**

-160, 320, -640, 1,280, -2,560, 5,120, -10,240, 20,480, -40,960, 81,920, -163,840 16th term = -163,840

**Chemistry **

In a 0.05M solution of a weak monoprotic acid,[H+]=.0018.What is its Ka?

**algabra**

find given the funcrion k described by k(x) =12x, find each of the following (a) k(-19),(b0 K (10)(c) k(21),k(-19)=

**math:(**

uhh idk i tink it divide but idk haha did u gt it rite/?

**ENGLISH: types of business writing**

Can someone check gammar, punctuatiion and structure please. Draft an email of at least four complete sentences to Deb Walker the designated trainer: Confirm the arrangements for the seminar providing only the information she needs to arrive at the right place at the right tim...

**ENGLISH: types of business writing**

Changed Dear Deb: I am confirming my understanding of our arrangements as we discussed for a seminar to be held at Broadworth General Hospital on sexual harassment and unlawful discrimination in the workplace. The date is to be July 20, 2012 at 9 am in conference room 200, on ...

**ENGLISH: types of business writing**

How does the rest sound?

**ENGLISH: types of business writing**

Draft an email of at least four complete sentences to Deb Walker the designated trainer: Confirm the arrangements for the seminar providing only the information she needs to arrive at the right place at the right time. Copy both to Mr, Dittmer and Ms. Hopkins Create an appropr...

**ENGLISH Types of business writing**

Thanks a bunch.

**ENGLISH Types of business writing**

REVISED We have received confirmation from Jeremy Dittmer for our seminar to be held on July 20, 2012. The trainer selected is Deb Walker. Deb will proceed to the conference room at 9 am the day of the session to set up before supervisors arrive. The conference room reserved i...

**ENGLISH Types of business writing**

Assume that you’ve worked for the last five years as an administrative assistant for the Human Resources Department of Broadworth General Hospital. The Director of Human Resources, Miriam Hopkins, has charged you with organizing a two-hour training seminar to be attended ...

**math**

A number from 11 to 24 is drawn at random. What is the probability that 18 is drawn? Write your answer as a fraction. A) 1/7 b) 1/14 C) 11/24 D) 18/14

**ENGLISH Types of business writing**

Assume that you’ve worked for the last five years as an administrative assistant for the Human Resources Department of Broadworth General Hospital. The Director of Human Resources, Miriam Hopkins, has charged you with organizing a two-hour training seminar to be attended ...

**ENGLISH : Types of business writing**

Thanks so much.

**ENGLISH : Types of business writing**

Assume that you’ve worked for the last five years as an administrative assistant for the Human Resources Department of Broadworth General Hospital. The Director of Human Resources, Miriam Hopkins, has charged you with organizing a two-hour training seminar to be attended ...

**ENGLISH Types of business writing**

How does this sound? Dear Mr. Dittmer: I am requesting a trainer for our seminar on sexual harassment and unlawful discrimination in the workplace for twenty of our office supervisors. Our company would like to take this opportunity to thank you for Wydade’s reliable supp...

**ENGLISH Types of business writing**

Dear Mr. Dittmer: I am writing to request a trainer for our seminar on sexual harassment and unlawful discrimination in the workplace for twenty of our office supervisors. Our company would like to take this opportunity to thank you for Wydade’s reliable support in offeri...

**ENGLISH Types of business writing**

Assume that you’ve worked for the last five years as an administrative assistant for the Human Resources Department of Broadworth General Hospital. The Director of Human Resources, Miriam Hopkins, has charged you with organizing a two-hour training seminar to be attended ...

**Improving your writing**

Need help with grammar, punctuation, paragraph structure. Thank you

**Improving your writing**

Need help with grammer, punctuation,

**Improving your writing**

BACKGROUND: Ten years ago, I started working as a clerk for DMD Medical Supplies. Six months ago, Liz, the human resources director, promoted me to office manager. I manage two employees: Jack and Ruth. My office provides secretarial support for the four members of the execut...

**Paragraph Writing**

BACKGROUND: Ten years ago, I started working as a clerk for DMD Medical Supplies. Six months ago, Liz, the human resources director, promoted me to office manager. I manage two employees: Jack and Ruth. My office provides secretarial support for the four members of the executi...

**Chem**

The actual heat of formation of MgO is -601.8 kJ/mol. Convert this to kcal/mol and calculate your % error. And list two possible sources of procedural error to account for this percentage.

**physics**

The figure is taken from a paper (Am J Sports Med 2004 32: 477) on injuries to the anterior cruciate ligament due to forces applied by the patella tendon. Take a particular case where the attachment force on the tibia is 5610N when the leg is oriented with patella tendon tibia...

**AP CHEMISTRY**

Calculate the pH at the equivalence point in titrating 0.100 M solutions of each of the following with 0.080 M NaOH. a)hydrobromic acid (HBr) b)chlorous acid (HClO2) c)benzoic acid (C6H5COOH)

**Calculus: Implicit**

1/2 √(3(6)+2(2)) * 3(2(2))+ 1/2 √(4(6)(2)) * 4(2)+2(6) right?

**Calculus: Implicit**

so i suppose to find slope. i have trouble this problem. my math book is not really clear. Find the slope of the tangent line to the curve √(3x+2y)+√(4xy)=11.6 at the point (6,2). √(3x+2y) is the square root(3x+2y) √(4xy)is the square root 4xy.

**Calculus Help!**

my answer was -40cos(sincos(x^5) right?

**Calculus Help!**

1. 8sin(cos(x^6)), find f'(x) 2. cos(sin(x^2)), find f'(x).

**Calculus. I need help!**

my worksheet say sin^5 x. well thanks

**Calculus. I need help!**

If f(x)=sin^5x, Find f'(x) i dont know im doing right way f'(x)= 5cosx * sin(x)

**Calculus. I need help!**

Write the composite function in the form f(g(x)). [Identify the inner function u=g(x) and the outer function y=f(u).] Then find the derivative dy/dx. y=√sinx √ is square root.

**Calculus 1 need help!**

Write the composite function in the form f(g(x)). [Identify the inner function u=g(x) and the outer function y=f(u).] Then find the derivative dy/dx. y=√sinx √ is square root.

**calculus 1 help!!**

If f(x)=(4x+8)^-2, Find f'(x)

**physics**

What are the mass and the atomic number for the anion of Cl 35?

**Chemistry**

KI+H2SO4 Write the balanced net ionic equation.

**physics**

What are the mass and the atomic number for the anion of Cl 35?

**math. need help**

United States citizens living in Switzerland must pay taxes on their income to both the United States and to Switzerland. Suppose that the United States tax is 28% of their taxable income after deducting the tax paid to Switzerland. Suppose that the tax paid to Switzerland is ...

**algebra 2**

can someone help me simplify 3/4i

**math**

Mary's test grades were 73, 86, 89, 84, and 86. Mary's teacher recorded one of her grades incorrectly. Instead of an 86, Mary's second test score should have been an 84. Which measure(s) of central tendency are affected by this change?

**Pre-cal**

How do I find the reference angle in radicals given the value of cosecant 5 pi/6?

**math**

Which of the following is the solution to the matrix equation below? [0 9 2] [18] [3 2 1] x=[5] [1 -1 0] [-1] a) [-3 -2 18] b) [-3 2 -18] c) [-3] [-2] [18] d)[-3] [2] [-18]

**math**

Use (Triangle) PQR with coordinates P(2, –1), Q(0, 5), and R(–2, 0). Which matrix expression can be used to translate (triangle)PQR 1 unit left and 3 units up?

**Math **

it costs $175 to rent a jet ski for 2 hours. it costs $300 to rent a jet ski for 4 hours. write an equation that represents y (in dollars) of renting a jet ski for x hours.

**math**

thanks for all help Ms.Sue.

**math **

Renter’s Insurance protects a person who is renting an apartment from losses or damages that can occur in the apartment setting. Give two examples of things that could happen in an apartment that would be protected by having renter’s insurance.

**math**

x^2+6x=24

**algebra**

Sam's plasma tv has a 14inby18in screen and border. The total area of the tv 480inch^2. How wide is the trim

**Physics**

What is the electric field midway between an electron and a proton separated by 0.7 nm?

**Physics**

What is a magnetic field of 950 G expressed in tesla?

**Physics**

A merry-go-round is a common piece of playground equipment. A 2.4 m diameter merry-go-round with a mass of 300 kg is spinning at 22 rpm. John runs tangent to the merry-go-round at 5.0 m/s, in the same direction that it is turning, and jumps onto the outer edge. John's mass...

**Physics**

A 340 g bird flying along at 6.0 m/s sees a 14 g insect heading straight toward it with a speed of 30 m/s. The bird opens its mouth wide and enjoys a nice lunch. What is the bird's speed immediately after swallowing?

**Physics**

find the electrostatic potential, and then the electric field a distance z above the centre of a circular loop of radius r, which carries a uniform line charge (lamda)

**physics**

A variable-speed drill, initially turning at 500 rpm, speeds up to 1300 rpm in a time interval of 0.8 s. What is its average rotational acceleration?

**Chemistry**

Is BCI3 polar or non polar ,identify the negative ends

**Physics**

the answer is 8 = D ~

**physics**

A locomotive is accelerating at 2.0 m/s2. It passes through a 20.0-m-wide crossing in a time of 2.8 s. After the locomotive leaves the crossing, how much time is required until its speed reaches 36 m/s?

**Computer**

Describe how an operating system that uses paging could make stacks grow dynamically if the original size proves too small. What would the page table data structures look like? Explain what would happen when a thread's stack grows past the area that has been allocated for ...

**Math**

Evaluate. Express each result in scientific and standard notation. (5.62 x 10^-3) (16 x 10^-5) and 9.2 x 10^3 2.3 x 10^5

**math**

Yard sale All items priced from .50-2.50 Median Price 2.10 Median Price 1.80

**math**

Elisa need to pick a numerical password that contains 4 digits using the numbers 0-9 If none of the digits can be repeated, how many 4-digit passwords are possible

**statistics**

In the past a certain college has found that 35% of the students will grad within 4 years. A random sample of 450 students at this college is taken and going to be followed until graduation. A. What is the sampling distribution of the statistic of interest? B. What is the prob...

**Earth Science**

which of the following locations in New York State is most likely to have the smallest range in temperature? 1. Long Island 2. the Catskills 3. Albany 4. the Adirondack Mountains

**earth science**

which of the following surfaces would absorb the least amount of insolation? 1. an open field 2. a forest 3. an asphalt parking lot 4. a glacier

**chemistry**

I have a question in chemistry relating to identifying a compound that would precipitate the iron ions out of a water supply. I am unsure of a compound that would react to produce the iron as a precipitate that could be removed. Thoughts?

**math**

is a line graph a table?

**mathh**

The only defined term of those listed is: line angle plane point

**math true/false**

All diagonals from a single vertex of a hexagon are drawn. Four triangles will result. True False true?

**math-true/false**

An isometry preserves distance. True False true?

**mathh**

A square has symmetry with respect to a line containing a median of the square. True False true?

**mathh**

Two similar polygons have areas of 16 square inches and 64 square inches. The ratio of a pair of corresponding sides is 1/4. True False its true?

**mathhh**

If the radius of this cylinder is doubled, its volume will be twice as much four times as much eight times as much is it four times as much?

**5 of 90 lotto equation formula**

i need a formula for 5/90 please help me am in Italy.. if you can help let hit together for agreement .. god bless you.. quanisarai at y.a.h.o.o dot c.o.m is my e.mail write to me

**Math**

How do i graph and do this problem Y=x

**math**

A sphere is inscribed in a cylinder. The surface area of the sphere and the lateral area of the cylinder are equal. true?

**Math**

How much money has to be invested at 4.3% compounded continously to have $19,000 after 16 years

**science**

mathematical relationship between period and frequency

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