The square below represent one whole express the shaded area as a fraction a decimal

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.

What ia the sum if the first 7 terms of the geometric series

Which is a logical conclusion based on the given information? a. figure abcd is a rhombus by the definition of a rhombus. b. segment ac is congruent to segment dc by cpctc. c. angle acb is congruent to angle adc by the angle-side-angle theorem. d. triangle acd is congruent to triangle cab by the hypotenuse-leg theorem.