How can you simplify (image)?

a. divide the numerator and denominator by (x – 21).

b. divide the numerator and denominator by (x + 7).

c. divide the numerator and denominator by (x – 3).

d. divide the numerator and denominator by (x – 5).

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 +

Which composition of similarity transformations maps polygon abcd to polygon a'b'c'd'? a dilation with a scale factor less than 1 and then a reflection a dilation with a scale factor less than 1 and then a translation a dilation with a scale factor greater than 1 and then a reflection a dilation with a scale factor greater than 1 and then a translation

Need solving this second acceleration problem.