solve using gaussian elimination with matrices x+y-3z=4 4x+5y+z=1 2x+3y+7z=-7

solve using gaussian elimination with matrices x+y-3z=4 4x+5y+z=1 2x+3y+7z=-7

1/2 log3(x)−2log3(y)−log3(z)

A culture of bacteria originally numbers 250. after 3 hours there are 900 bacteria present. assuming exponential growth how long will it take until 10,000 bacteria are present?

a substance has a half-life of 50 years if 300 kilograms are present initially how much will remain after 15 years?

use the substitution method or the elimination method to solve the following system. 5x-30y=15 -7x+42y=-21

Sadly because I do not have a graphing calculator, I keep getting the values wrong in order to write the polynomial. The equation to follow this is P(x)=asub3x^3+asub2x^2+asub1^x+asub0...

Root squared to the 3rd over 1-x=-5

solve the system by computing X=A-1B x+3y=10 -2x+3y=-2

solve the system by computing X=A-1B x+3y+3z=-4 x+4y+3z=-7 x+3y+4z=-7

On the day of a child's birth, a parent deposits $35,000 in a trust fund that pays 6% interest, compounded continuously. Determine the balance in this account on the child's 24th birthday. (Round...

I have tried to solve this problem for hours and can't figure it out.

Complete the table to determine the balance A for P dollars invested at rate r for t years and compounded n times per year. (Round your answers to the nearest cent.) P = $4500, r = 7%, t = 20...

find a fourth degree polynomial with integer coefficents that has the following zeros: -6,1,2,3i

a) 2+3x−1 =18 b) ln(x2 −4)=8 c) log3(x−2)+log3(x+1)=6

determine the real solutions to the system of nonlineat equations x+y=1 y=x2-5

f(x)=x4-16 ; find f(2), f(-2) and f(2-√5)

how long will it take $1,000 to grow to $1,700 earning a 5.5% interest rate compounded continuously?

Write an equation in standard form of the parabola that has the same shape as the graph of f(x)=8x^2 or g(x)=-8x^2, but with the given maximum or minimum. Maximum=3 at x=-2"

Food and clothing are shipped to victims of a natural disaster. Each carton of food will feed 14 people, while each carton of clothing will help 6 people. Each 20-cubic-foot box of food weighs 40...

I don't normally ask for this extent of help. but can someone walk me through the last bit of this equation. I know the steps, but I keep getting it wrong, my teachers out of town, and I don't have...