Mark is 15 years younger than ashley. the sum of their ages is 55. write a system of 2 equations to determine mark (m) age and ashley (a) age. i don't know how to write this into 2 equations!

answer:

125 yards

explanation:

75+50=125. that is my answer

the answer would be d

straight away you can eliminate a and c because not all books contain a scientific skill because some may be fiction. c is also wrong because it saids that the only way children can learn is through books which is incorrect.

b is also wrong because reading can be a scientific skill but not always, therefore it is wrong which leaves you with d, the correct answer since it said that it can children learn.

hope this ! : 3

1^3 + 2^3 + 3^3 +4^3 = (1+2+3+4)^2

step-by-step explanation:

i am only able to answer the first part. i am not sure about the second part. sorry