Prove that determinant of a (b+c) bc 1 b (c+a) ca 1 c (a+b) ab 1 = 0

Find the exact values of sin A and cos A. Write fractions in lowest terms.

Gabe is twenty years older than his children. Laura is forty years older than her grandchildren. All members ages add to 290. Write an equation that would represent this scenario.

How is the Transitive Property of Parallel Lines similar to the Transitive Property of Congruence? How are they different?

What is the solution the this equation? solve using linear combination method: {-2x+y=-17 {3x+y=23

X:3 (2x-5) - 2 (4x+1) = -5 (x+3) - 2.

Anna tossed 3 coins in the air. What is the probability that exactly 2 of the coins show heads? Look back at all of the possible outcomes from #2 and use that to find your probability. Write the probability as a fraction. Simplify, if needed.

A gold and diamond bracelet sells for $1800. Find the sales tax and total price if the sales tax rate is 3.5%.

A squirrel found 48 acorns in a 3-day period. Each day the squirrel found 5 more acorns than the day before. How many acorns did the squirrel find on the first day?

After work Gladys used the ATM to deposit her paycheck for $638.77 and to withdraw $200 cash. If her starting bank balance was $418.03 what is her new balance

Anita read 24 pages of her book in 12 minutes how long will it take her to read 34 pages