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...
18 years ago
Calculate amount of milliliters of 2.0 M HCl needed to neutralize 0.15 mol of NaOH
14 years ago
What can be a good picture of a modern situation of the ninth station of the cross when jesus falls the third time?
13 years ago
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?
13 years ago
what is 18 percent of 240
13 years ago
What is a bias paragraph?
12 years ago
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...
12 years ago
Calculate the volume of oxygen at 27C and 740 mmHg which could be obtained by hesting 10g of potassium trioxochlorate (v)
11 years ago
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?"
11 years ago
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!
10 years ago
At 2:00 pm, the temperature was12F. If the temperature dropped 5 degrees each hour, what was the temperature at 5:00 pm?
9 years ago
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....
9 years ago
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... :(
8 years ago
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?
8 years ago
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
8 years ago
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...
8 years ago
The same shapes weigh the same amount. How much does each solid figure weigh?
8 years ago
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
5 years ago
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.
4 years ago
N is a square N is a cube N is an odd number N is divisible by twelve prime numbers. Find N
3 years ago
6^(x-2)=1/1296 solve for x thanks please explain the steps..
3 years ago
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
3 years ago
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
3 years ago
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...
3 years ago
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...
3 years ago
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
3 years ago
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
3 years ago
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
3 years ago
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...
3 years ago
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
3 years ago
What are the examples of how the problem of gbv has displayed itself in the community
3 years ago
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
3 years ago
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.
12 years ago
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
11 years ago
(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?
11 years ago
problems question 4
11 years ago
Question 1: A B C D Question 2: A C D Question 3: A B D Question 4: A B D
9 years ago
This very easy do it yourself Sorry
9 years ago
21 litres
9 years ago
Amanda says her quilt has 9 equal parts. Jeremy says it has 3 equal parts. Can they both be correct? Explain
7 years ago
I think its HE WONDERED WHY HE WAS FEELING SO JUMPY
6 years ago
It fit for my home work and it fits WITH SPACES!!
6 years ago
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
5 years ago
oxidation-reduction 2KBr+I2
4 years ago
I want to no
3 years ago
love you guys
3 years ago