Assume that two figures on a flat surface, a and b, are similar.

a. if the linear scale factor is 2/5, then what is the ratio of the areas of a and b?

b. if the ratio of the perimeters of a and b is 14: 1, what is the ratio of the areas?

c. if the area of a is 81 times that of b, what is the ratio of the perimeters?

What are the first 4 terms in the multiplication pattern given by the formula 2×4n

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.

47: 4 aisha changed 1.45 + 2.38 to 1.5 + 2.4 in order to estimate the sum. what estimation method did she use?