Matilda

This page lists questions and answers that were posted by visitors named Matilda.

Questions

The following questions were asked by visitors named Matilda.

Can someone please help me with the following?: Factor each expression completely: x²-x-72 3x²-3x-168 Here is the way I have found to do these. First, make a couple of sets of parentheses. ( )( ) We put in the first letter. From X<sup>2</sup> we can get O...

Calculate amount of milliliters of 2.0 M HCl needed to neutralize 0.15 mol of NaOH

What can be a good picture of a modern situation of the ninth station of the cross when jesus falls the third time?

the outer distance of a bicycle wheel is 95cm how many complete turns does the wheel make when the bicycle travels a distance of 350m?

what is 18 percent of 240

What is a bias paragraph?

Hi, I am doing a practice test for my chemistry final and I do not understand one of the answer they gave for this thermochemical equation question. I do not understand how they got 400kJ. The question is: Butane has a deltaH of -2871 kJ/mol when it under...

Calculate the volume of oxygen at 27C and 740 mmHg which could be obtained by hesting 10g of potassium trioxochlorate (v)

I am to write an historical investigation, and this is my first time writing something like that. Is an IB school. the question is "How did the factory system affect the life of the working class in Britain?"

Given x^2+y^2=4, find the equation of the tangent line at the point (-1,sq.rt.3). Then, at what point is the slope 0? What point is the slope -1? I have no clue what to do!

At 2:00 pm, the temperature was12F. If the temperature dropped 5 degrees each hour, what was the temperature at 5:00 pm?

in an attempt to to provide a means of generation of NO cheaply, gaseous NH3 is burned with 20% excess oxygen according to the equation 4NH3+5O2=4NO+6H2O The reaction is 70% complete. the NO is separated from the unreacted NH3, and thelatter is recycled....

How to derive cosh (3x) in terms of cosh (x) and sinh (x) ? Initially I start with 1/2 (e^3x+e^-3x) but I'm stuck from there because I don't know how to continue... :(

The graph of x2 −6x+9+y2 +2y+1 = 25 is a circle. Where would the center of the circle be? What is the radius of the circle?

Find the center and the radius of the following circles: (a) x^2 +y^2 −6x+y=3 (b)x^2 +y^2 +8x=0 (c)x^2 +y^2 +2x−8y=−8

The point P = (4, 3) lies on the circle x2 + y2 = 25. Find an equation for the line that is tangent to the circle at P. This line meets the x-axis at a point Q. Find an equation for the other line through Q that is tangent to the circle, and identify its...

The same shapes weigh the same amount. How much does each solid figure weigh?

A drop of oil of volume 12^-10m^3 spreads out on water to make a circular film of radius 11^-2m calculate the thickness of the film

People have been abusing the environment through illegal mining. Write a letter to the Minister of lands and Natural resources giving three reasons why you think the environment should be protected.

N is a square N is a cube N is an odd number N is divisible by twelve prime numbers. Find N

6^(x-2)=1/1296 solve for x thanks please explain the steps..

log4(2*256x^4) i know that log4(2)+log4(256)+log4(x^4) = log2^2(2)+4+4log4(x) but now I am stuck thanks

Condense the expression 1/2ln(2x-1)-2ln(x+1) = 1/2ln(2x-1)/2in(x+1) = ln((2x-1)^1/2/(x+1)^2) check my answer thanks

A student takes out two loans to help pay for college expenses. The total amount of money borrowed is $8050. Both loans have interest that accrues annually. The first loan has an interest rate of 8.5%, and the second loan has an interest rate of 2.5%. Aft...

A tree has a height of 15.86 meters. What is the angle of elevation (in degrees) to the top of the tree at a distance of 20.05 meters along the level ground away from the tree? Round your answer to 3 decimal places. check my answer.. .is it 38.345 degrees...

Find a solution to the following system of equations. Enter your answer as an (x,y) coordinate pair. x^2+y^2 = 82 x+y =−8 is it x=1 , y = -9 and x=-9, y=1

Given the following matrices A and B, A=[x y B=[2 -8 −y] and 1] if the product of the matrices AB=[−23 x] , find a value of x that satisfies these conditions. is it -7? thank you

Find the solutions to the given equation in the interval [0,2π)? 2sin^3(x)−sin(x)cos(x)=2sin(x) check my answers π 4π)/3 2π/3 and would 0 be one of the answers? thanks

expand the logarithm as a sum or difference and or contant multiple of logarithms log _4 16xy^2 thank you.. I know you do this: log _4 16+ log _4 (x)+ log _4 (y^2) and I know the first part = 2 and the last part you use the exponent rule =y^2log4 but the...

i understand the concept of domain and range domain--set of all possible inputs for the function range-set of all possible outputs but I don't know how to find example: state the domain and range of f(x)=10-√(3-x) thank you

What are the examples of how the problem of gbv has displayed itself in the community

Your uncle who had been oversees for ten years is coming back. Write a letter to your friend in another school telling him or her how you will spend the holidays with your uncle

Answers

The following answers were posted by visitors named Matilda.

Thank you, so when I did that I got -137kJ. so is their answer wrong or mine. They had 400kJ.

Using the gas equation, V1=499ml; T1=25C+273K=298 P1=740mmHg At s.t.p P2=760mmHg; T2=273K; V2=? V2= 499*740*273 /760*298 =445.1 ans

(a) According to table 4.1, by how much would coffee sales decline if the price of coffee increased by 20 percent? (b) If Starbucks raised its coffee prices by the same amount, would sales decline by more, less, or the same amount?

problems question 4

Question 1: A B C D Question 2: A C D Question 3: A B D Question 4: A B D

This very easy do it yourself Sorry

Amanda says her quilt has 9 equal parts. Jeremy says it has 3 equal parts. Can they both be correct? Explain

I think its HE WONDERED WHY HE WAS FEELING SO JUMPY

It fit for my home work and it fits WITH SPACES!!

A=1/r=1//0.175 5.714 R=329degree 11/x=0.175/0.42 0.175x=11*0.42/0.175 =26.4m

oxidation-reduction 2KBr+I2