X+9.8=14.2 what does x equal

The mass of a an atom of helium is 6.65 x 10^-24. Use scientific notation to express the mass of 250 helium atoms. A) 1.6625 x 10-21 B) 1.6625 x 10-22 C) 1.6625 x 10-24 D) 1.6625 x 10-26

Which would be greater 143,649,525 rounded to the hundred millions place or 105,417,932 rounded to the ten millions place

The board of directors of a corporation must select a president a secretary and a treasurer in how many possible ways can this be accomplished if there are 22 members on the board of directors

Marty says he would rather have - $5 than $0. Do you agree with Marty? Explain.

Select the fraction that is equivalent to 0.081.

Investigating the Definition of Absolute Value

3. Square the following numbers. a. 4 b. 6 C. 13 d. 10

Is 25 a perfect cube

Is 3 to the negative 1 power times 3 to the negative 1 power equal to 3 to the 1 power?

Claire's mother is 4 years more than twice Claire's age. The sum of their ages is 58 years. Claire's age is years, and her mother's age is years