Will give brainliest and

∠1 and ∠2 are vertical angles. ∠2 has a measure of 63°.

what is the measure of ∠1 ?

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

If olu is twice as old as funmi if the sum of their ages is 60 how old is olu

Acertain volume of water contains 100000 hydrogen atoms and 50,000 oxygen atoms how many hydrogen atoms are in a volume of water containing 4 million oxygen atoms