Va rog frumos ajutați-ma dau coroana! 4. Fie x, y, z trei numere reale astfel încât x + y +z=6. Arătaţi că cel puțin unul dintre
numere e mai mare sau egal ca 2, şi că cel putin unul dintre ele e mai mic sau egal ca 2.
5. Arătaţi că 19 nu poate fi scris ca o diferenţă de numere prime.

Points d and e are midpoints of the sides of triangle abc. the perimeter of the triangle is 48 units. what is the value of t? ο ο ο ο 7t +

Evaluate the following expression 1/3^2

Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.