Saturday

April 19, 2014

April 19, 2014

Posted by **bryan** on Tuesday, December 16, 2008 at 12:51am.

1) (5t)(5t)^3

My answer: 5t^15

Write the number without exponents

2) 8.78x10^5

My answer: 878,000,000

Multiply.

3) (x+9)^2

My answer: 9x^18

- math check -
**Reiny**, Tuesday, December 16, 2008 at 1:21amno, on all three

(5t)(5t)^3

= (5t)^4

= 625t^4

8.78x10^5

= 8.78x100000

= 878000

(x+9)^2

= (x+9)(x+9)

= x^2 + 9x + 9x + 81

= x^2 + 18x + 81

**Related Questions**

Calculus (Related Rates) - The position of a particle moving in a straight line ...

algebra help - (t^3-3t^2+5t-6)divided by (t-2) t^2 t-2! t^3-3t^2+5t-6 t^3-2t^2 ...

pre- algebra - 5t-9 ----- 4 = 14 *5t-9 is over 4. if you understand the question...

Algebra (check my answers) - Please check these answers. Multiply -7(2a2 -4) = -...

math - multiply and write answer without exponents (3x10^6)(2x10^4) Is the ...

MATH - PLEASE HELP! - Need help with combining like terms How do I figure this ...

Algebra - Can you please check my work? You have helped other students I know. ...

math - sorry its 5t+(6 times 10 power neg.3)....and the answer should be1.08 ...

Intermediate Algebra - Multiply.(2/5t-1)(3/5t+1)

Math - Exponential - Please check if my answers are correct! Thank you. ...