Mathematics

Find the area of the surface obtained by rotating the curve

y=1+2x^2, from x=0 to x=1 around the y-axis-around y-axis y = 1 + 2x^2 =====> x^2 = (1 - y)/2 ====> x = √( (1 - y)/2 ) ====> x = ( (1 - y)/2 )^(1/2) dx/dy = (1/2) *( (1 - y)/2 )^(-1/2) * -1/2 dx/dy

Help With 2 Quick Questions Please

Question 1: The Hansons have reduced the average number of hours they watch television each day from 5.5 hours in March to 2.5 hours in June. Find the rate of change in the average number of hours the

What is the correct simplification of (2xy^2)^2(y^2)^3.

& what is the correct simplification of 7 / x-2 thank you ♥-4x^2y^10 its 7 /( x-2)-(2xy^4)(y^6)-4x^2y^10-(2xy^2)^2(y^2)^3=(4x²y^4)(y^6)=4x²y^10 7 / x-2=7/(x-2)-What was the question again?

A triangle has coordinates A (1, 5), B (-2, 1) and C (0, -4) What are the new coordinates if the triangle is r

A triangle has coordinates A (1, 5), B (-2, 1) and C (0, -4) What are the new coordinates if the triangle is rotated 90° clockwise around the origin?-as long as it does not spin......find slopes of li

If you wanted to eliminate the y variable by adding the two equations in the following system

what could be your first step?x − y = 6−4x − 4y = 10 A. Add the two equations together. B. Multiply the first equation by −4. C. Multiply the first equation by 4. D. Multiply the second equation by

For the given proportion, find the unknown number n

7/15 = n/6 Im such a loser. Please help!-Youre NOT a loser! Remember that whenever you solve an equation, you chage the value of each side of the equation in the same way until you isolate your unkn

Use laplace transform to solve the given system of differential equations

dx/dt=x-2yand dy/dt=5x-y x(0)=-1&y(0)=2 I took the laplace of both equations and got sL[x]+1=L[x]-2L[y] sL[y]-2=5L[x]-L[y] I dont know how to simplify in terms of L[x]=& L[y]=-Rewrite as (s - 1) L

How to find the probability

Your manufacturing plant produces air bags, and it is known that 30% of them are defective. Five air bags are tested. (a) Find the probability that 5 of them are defective. (b) Find the probabilit

3x-2/3x=5/3-6/x The solution set is {..}

Using PEDMAS to determine the order of operations: 3x -2/3x = 5/3 - 6/x 7/3x = 5/3 - 6/x 7/3x² = 5/3x - 6 7x² = 5x - 18 7x² - 5x + 18 = 0 x = (1/14)[-5±√(25-504)] = (-5±i√479)/14 x = -(5+i√479)/14,

Find the equation of the normal line to the graph of

y=x^2+x.siny+π\2 at x=0-y = x^2 + xsiny+ pi/2...................differentiate implicitly y = 2x + xcosy(y) + siny y(1 - xcosy) = 2x + siny............y = (2x + siny)/(1 - xcosy) y(0) = pi/2.......

Standard Grade Maths Help

How do i work out a question like this.. 7 times 2 1/3. Could someone please help me understand how to do it and not just the answer? :) thank you!-2 1/3 = (2*3 + 1)/3 = 7/3 7*7/3 = 49/3

Smallest value for n for a probability

The random variable y has a N(40,12) distribution. The mean of a random sample of n observations of y is denoted by X. Find the smallest value of n for which P(x>=41) How do you do this? Using propor

HELP ME! Beginners geometry!

A rhombus is centered on the origin.One side of the rhombus goes through the points (a, 0) and (0, b).What are possible coordinates for one of the other sides? A.(–a, 0), (a, 0) B. (b, 0), (0, –a) C.

What is the radius of a circle if using pi=22/7 gives an error of 1 m^2 in its area

Do you mean: (22/7)*r^2 - pi^r^2 = 1 r^2((22/7) - pi) = 1 r^2 = 1 / ((22/7) - pi) r = sqrt(1 / ((22/7) - pi)) r =~ 28.12-Area is (pi)r^2 but pi=3.1415923 to 8 sig fig whereas22/7=3.1427571 to 8 sig fi

How many milliliters of 1.60 M HCl must be added to 25.0 mL of 1.60 M Ca(OH)2 to make a neutral solution

Best answer gets 20 points.-Ma Va ia = Mb Vb ib Where: M is molarity V is volume i is the van t Hoff factor (integer number of moles of ion in solution per mole of acid/base; ratio of stoichiometric