Express the number 0.0000005864 in scientific notation

Restrictions on f(x) = 1/x+5 and g(x) = x-2

3x + 4y = 5 x- 3y = -7 solve by substitution

Tamar is measuring the sides and angles of tuv to determine whether it is congruent to the triangle below. which pair of measurements would eliminate the possibility that the triangles are congruent