Which processes contribute to the formation of rock at point r? check all that apply compacting of sediments on the mountain cooling as the lava runs down the mountain melting of rocks to form magma underground weathering of the mountain from the environment eroding of different rocks at the base of the mountain

the third on bro

no prolem and your welcome for the answeer

C- melting of rocks to form magma

Explanation:

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

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answer: 45

explanationyou have to add as well to be it could be