A área do triângulo ABC, A(m,1,1), B(1,-1,0) e C(2,1,-1) é igual a LaTeX: \frac{\sqrt{21}}{2}21 2. Qual dos valores abaixo pode ser um valor de m?

Given that ot =5, xt=12, and ox= 13 is xy tangent to circle o at t? explain.

Jessica and martha each have a bag of cookies with unequal quantities. they have 30 cookies total between the two of them. each of them ate 6 cookies from their bag. the product of the number of cookies left in each bag is not more than 80. how many more cookies will jessica have martha? if x represents the number of cookies jessica started with, complete the statements below.the inequality that describes the relationship between the number of cookies each one of them has is x^2 - x +224 > = 0.jessica has at least cookies more than martha.

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.