Can anyone help solve for x? It’s additional maths so i can’t use a graphing calculator. Please explain steps

What is always true when two whole numbers are subtracted?

Which is the best estimate of the product of 0.9 x 0.88? 0 0.25 0.5 1

Lucy is a dress maker. she sews \dfrac47 7 4 ? of a dress in \dfrac34 4 3 ? hour. lucy sews at a constant rate. at this rate, how many dresses does lucy sew in one hour? include fractions of dresses if applicable.