Solve the following system of equations using substitution. what is the value of y? 2x + 3y = 105 x + 2y = 65

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

[15 points]find the quotient with the restrictions. (x^2 - 2x - 3) (x^2 + 4x + 3) ÷ (x^2 + 2x - 8) (x^2 + 6x + 8)

In the given triangle, ∠aed ∼ ∠ abc, ad = 6.9, ae = 7.2, de = 5.2, and bc = 10.2. find the measure of bd and ce. round your answer to the nearest tenth.