Plz solve it CORRECTLY step by step plz​

The ratio of two numbers is 5 to 4. the sum of the numbers is 99. what number is the greater of the two numbers?

Which triangle congruence postulate or theorem justifies my claim that the steps i made using construction paper and scissors produce an isosceles triangle? was it sss, sas, asa, aas, or hl?

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)