Which expression is equivalent to

(sin x + 1) (sin x - 1) ?

A.) cos^2x

B.) - cos^2x

C.) cos^2x + 1

D.) cos^2x - 1

E.) - cos^2x + 1

What is the simplified form of this expression, written in scientific notation? (3.276*10^5) * 400,000: (3.9*10^6) Enter your answer in the box

The human DNA molecule is 34 angstroms long and 21 angstroms wide. Does this structure adhere to the dimensions of the Golden Ratio?

Which equation is true? I. 56 : 4·7 = 82 : (11 + 5) II. (24 : 8 + 2) 3 = (42 + 9) 2 A. I and II B. II only C. I only D. Neither I nor II

Marty has $5,200 saved for his college education. He invests the money at 2.7% compound interest. How much will his account balance be after 5 years? Show all of your work.

How to solve equations with 2 variables with substitution and elimination?

The fitness club opens with 80 members each month the membership Increases by 15 members which equation represents the relationship between the number of months the club has been opened eggs and the total fitness club membership

If a square plate has side lengths of 5 inches, what is the length of the diagonal to the nearest tenth of an inch?

3. Sarah's parents give her a $100.00 allowance at the beginning of each month. Sarah spends her allowance on comic books. The graph below represents the amount of money Sarah spent on comic books last month.

If x² + x² + x² = 6, what is x?

What fraction can be multiplied and equal 4/5