Thursday

July 31, 2014

July 31, 2014

Total # Posts: 7

**algebra **

If a stone is tossed from the top of a 310 meter building the height of the stone as a function of time is given by h(t)=-9.8t^2-10t+310 where t is in seconds and height is in meters. After how many seonds will the stone hit the ground? Round to the nearest hundreth's answ...

**Algebra**

Can someone help me with this please. Andrew factored the expression 20x^3-12x^2+8x as 4x(5x^2-12x^2+8x) but when melissa applied the distributive law and multiplied out 4x(5x^2-12x^2+8x)she got 20x^3-48x^3+32x thus Andrews solution does not appear to check. Why is that? Pleas...

**Algebra**

Factor at the greatest common factor from the expression. Can someone please show me how to factor so I will know? Thank you! 18x^714x^2

**algebra**

Add these polynomals. (21t+8(4t) and (3t-4)(2t) 84t^2+32t 6t^2-8t I got this far but isnt there another setp I am forgetting?

**Algebra**

Add these 2 polynomials (21t+8)(4t) and (3t-4)(2t) 84t^2+32t 6t^28t I got this far isnt there another setp to do this is the part I am having difficulty with.

**math**

A deposit of $2,000 earns interest at a rate of 14% compounded quarterly. After two and a half years the interest rate changes to 13.5% compounded monthly. How much is in the account after six years?

**math**

Deposits of $1,000, $1,100 and $680 were made into a savings account, the first two years ago, the second 18 months ago, the third 6 months ago. How much is in the account now if the interest on all deposits is 12% compounded semi-annually?

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