# Leon

Newest questions posted by Leon-
## Math

The number 48 consists of how many distinct prime factors? -
## American Government

"His 1863 Emancipation Proclamation freed Confederate slaves but scholars still debate whether it rested on any firm constitutional foundation" Based on the excerpt, which statement best illustrates the impact of Lincoln's proclamation on government? A: it -
## Algebra

simplify the complex fraction x/(x+2)/((1/x)+1/(x+2)) if you put that in the calculator it should show you what it looks like properly. A: x^2/2 B: x^2/x+2 C: x^2/2x+2 D: x^2+2x+2/2x+2 I think it is C -
## Algebra

What is the quotient 6-x/x^2+2x-3 divided by x^2-4x-12/x^2+4x+3 in simplified form? State any restrictions on the variable A: -(x+1)/(x-1)(x+2) x does not equal -3, -2, 1, and 6 B: -1/(x+2) x does not equal -3, -2, and 6 C: -(x+1)/(x-1)(x+2) x does not -
## American Government

Which adjective best describes how the Necessary and Proper Clause of the US Constitution is often interpreted by the federal government? A. brittle, meaning that it falls apart when used in a legal argument B. elastic, meaning it can be expanded as needed -
## Help Please. Math

By comparing the amount of carbon-14 to amount of carbon-12, one can determine approx how long ago the organism died. The half-life of carbon-14 is 5730 years. Assume the initial quantity of carbon-14 is 600 milligrams. the equation is A (t)=600*(.5)^(t) -
## Chemistry

When iron metal reacts with oxygen, the reaction can form Fe2o3 (numbers are subscripts). Write a balanced chemical equation for this reaction and find the number of moles of oxygen that are needed to form 6 mol of Fe2o3. Show your work. I am really stuck -
## Physical Science

What are the products of a double replacement reaction between potassium bromide and silver nitrate? Name the resulting compounds. -
## Math

Raj gets a 1.5 mile head start and runs at a rate of 4.5 miles per hour. Jacinda's progress is represented by a graph that goes through the points (1,10), (2,20), and (3,30). How long will Jacinda need to run to catch up with Raj? -
## Algebra

Raj gets a 1.5 mile head start and runs at a rate of 4.5 miles per hour. Jacinda's progress is represented by a graph that goes through the points (1,10), (2,20), and (3,30). How long will Jacinda need to run to catch up with Raj? -
## science

The half-life of carbon-14 is 5730 years. If we start with 10 grams of carbon-14, after 5730 years, we will have _____ of carbon-14 left. -
## science

Which rate constant would result in the fastest reaction? Which rate constant would result in the fastest reaction? 1 1.3 × 103 L/mol · s 2 2.8 L/mol · s 3 9.5 × 10-2 L/mol · s 4 4.2 × 10-3 L/mol · s -
## science

A graph of experimental data is a straight line when ln[H2] is plotted versus time. Which rate law fits the data? 1 Rate = k(ln[H2]) 2 Rate = k/[H2] 3 Rate = k[H2] 4 Rate = k[H2]2 -
## science

The half-life of carbon-14 is 5730 years. If we start with 10 grams of carbon-14, after 5730 years, we will have _____ of carbon-14 left. -
## physics

A boulder flies through the air at 14.5 m/s with kinetic energy 310 J. What's its mass? What's the boulder's kinetic energy if its speed doubles? What's the boulder's kinetic energy if its speed is halved? -
## Calculous

Without using a calculator, find the sum of the series. Pretend in place of E is Greek Letter Sigma. 27 E(4 + 1/2n) = ? N=0 -
## Sequences

An arithmetic sequence has first term of 6 and difference of 8; what is the tenth term? a10(subscript 10) = ? -
## Econ

The 1-year interest rate on Swiss francs is 5 percent and the dollar interest rate is 8 percent. (A) if the current $/SF spot rate is $0.60, what would you expect the spot rate to be in 1 year. (B) Suppose US policy changes and leads to an expected future -
## Math

g(x) = (1-x)(4+6x) / (5x^2+4) Horizontal asymptote y = ? -
## Basic programming principles

What would be the answer of the following: (only type in your answer at the answer space provided) Result a = 5 b = 7 Answer = 15 Do while answer -
## Basic programming principles

The user wants to display a message a fixed number of times, if you know the message and the number of times (number) it must be displayed what would be the for statement, will this be correct or incorrect ONLY indicate correct or incorrect at your answer -
## Basic programming principles

The for next statement is used to display the consecutive numbers from 1 to 10K = 1 For I = 1 to 10 Display k, “ “K = k + 1 Next I The output will be 10 9 8 7 6 5 4 3 2 1 Will the above statement output be correct or incorrect -
## Basic programming principles

If the value of K is equal to 6, increase the value of A by 5%, if the value of K is equal to 4, decrease the value of A by 8, if the value of K is equal to 7, add the value of B to the value of A, otherwise decrease the value of A by 12%Will the following -
## Basic programming principles

Piet earns R20 per hour, if he works more than 30 hours then he receives an extra R8 per hour, will the following statement be correct or incorrect (only type in correct or incorrect at your answer space)If hoursworked > 30 then Salary = salary + -
## Science

5.The process of desertification can occur when B.farmers use contour farming techniques C.an area of forest is clear-cut D.an area of forest is selectively cut 7.Which of the following statements describes the conservation of a natural resource? A.A -
## 5th grade math

What fraction of a dollar is shown by coins (2 quarters, 1 dime, and 5 nickels)? I got 80/100 equals 8/10. Is 8/10 the correct answer? If not can you show me how to get the right answer? -
## math

A side of an equalateral triangle is 2/8 cm long. Draw a picture that shows the triangle. What is the perimeter of the triangle? -
## Math

Sam has a total of 200 dimes and quarters. If the total value of the coins is $28.10, how many quarters does he have? -
## statistic

I claim that I make 80% of my basketball free throws. To test my claim, you ask me to shoot 20 free throws. I make only 8 of the 20. “Aha!” you say. “Someone who makes 80% of her free throws would almost never make only 8 out of 20. So I don’t -
## physics

A mass m1 = 6.0 kg sits on a frictionless table, and rotates at a constant speed v = 3.0 m/sin a circle of radius R = 1.5 m. m1 is attached by a massless string which passes through a hole in the centre of the table to a second m2 (which hangs freely -
## Chemistry

If 2 grams of acetic acid is reacted with excess 1-pentanol, what mass of pentyl acetate would you expect to achieve theoretically? -
## Statistics

For each of the following (a) indicate how many factors are included, and (b) tell how many levels there are for each factor: a) 2x2 b) 2x3 c) 2x3x2 d) 4x3 e) 4x3x2x3 -
## tusd

last year, the sports athelitic club charges 20.00 per class. 70 people attended. The club wants to increase the class price. the club expects to lose one customer for each $1.00 increase. a. what should the new price be to maximize the income? b. what is -
## Maths

triangle ABC is right angled at A. AD is perpendicularto BC. If AB= 5cm,BC= 13cm and AC=12 cm.find the area of triangle ABC. Also find the length of AD. -
## java programing

Write a program that evaluates the volume and surface area of a sphere of radius 11.2cm. -
## java programing

If you were writing a program application that was harvesting people's emails and telephone numbers, explain and demonstrate how you would validate the individual emails and telephone numbers! That is to make sure all the emails and telephones you got were -
## java programing

Write a program that evaluates the volume and surface area of a sphere of radius 11.2cm. -
## calculus

sum (n*2^n)/(2^n +3^n) [n to infinity] conv or div ? and how to get that? thank you! -
## calculus

The parametric curve x(t)=3cos(t) y(t)=7sin(2t) intersects itself at a point P=(x0,y0) where x0= y0= The slopes of the 2 tangents at this point are? THANK YOU! -
## percentage

you have 50 students one day and 70 the next what is the percentage increase -
## math calculus

Use implicit differentiation to find the equation of the tangent line to the curve xy^3+2xy=9 at the point (31). The equation of this tangent line can be written in the form y=mx+b where m is -
## phys

The space shuttle, with an initial mass M = 2.41E+6 kg, is launched from the surface of the earth with an initial net acceleration a = 26.1 m/s2. The rate of fuel consumption is R = 6.90E+3 kg/s. The shuttle reaches outer space with a velocity of vo = 4632 -
## Economics

Ashley is currently consuming 10 hot dogs and 8 hamburgers a week. The last hot dog she consumed yielded 20utils while the last hamburger she ate gave her 25utils. If hot dogs cost $2 and hamburgers cost $2.50, is Ashley consuming the correct quantities of -
## PHYS

A bungee jumper (m = 61.00 kg) tied to a 45.00 m cord, leaps off a 75.00 m tall bridge. He falls to 5.00 m above the water before the bungee cord pulls him back up. What is the magnitude of the impulse exerted on the bungee jumper as the cord stretches? -
## Chem

In the |Molecular Geometry Lab 1. List three ways in which models used in this experiment are inaccurate representations of orbitals? 2.explain why the ClF3 molecule is not a trigonal planar molecule? -
## LINEAR ALGEBRA

How to prove or disprove (a)if A has a zeronentryonthe diagonal then A is not invertible (b)if Ais not invertible then for every matrix B, AB is not invertible (c)if A is a nonzero 2X2 matrix such that A^2+A=0, then A is invertible -
## chem

1. what is the quantum numbers of the last electron of Sb?(n= l= ml= ms=) and why the answer are this number? 2.how many electrons would be found in the n=6 level if all possible orbitals were completely filled with electrons? how to calculate this one? -
## chemistry

For a TLC lab,the stationary phase is the mixture of isopropanol and ammonia or the mixture of hexane,ethyl acetate and ethanol, the stationary phase is silica gel. text some dyes and drugs. which one of the two mobile phases is the more polar? Actualy I -
## chemistry

For a TLC lab,the stationary phase is the mixture of isopropanol and ammonia or the mixture of hexane,ethyl acetate and ethanol, the stationary phase is silica gel. text some dyes and drugs. what is the relationship between the polarity of molecules and -
## chemistry

it is 0.1M of acetic buffer equal to sum up of 0.05M of acetic acid and 0.05M of sodium acetic ? -
## nutrition

o What are some current nutritional issues, such as obesity or malnutrition for infants -
## Finance

if the price of milk has quadrupled (that is, grown four times) over the past 25 years, what has been the annual rate of inflation in milk price over that time period? -
## Finance

if the price of milk has quadrupled (that is, grown four times) over the past 25 years, what has been the annual rate of inflation in milk price over that time period? -
## Physics

Consider a simple alternating current generator such as Hippolyte Pixii's dynamo. The current generated by such dynamo can be described as simple oscillating cosine signal. Assuming for simplicity that the max current generated each time a pole of Pixii's -
## Global : Columbus

1) Why do you think Christopher Columbus is a villian? 2) Who discovered America before Columbus?