5. Given: 2q- r = 4p, 2r = g. r= 2p: Prove: q=r
Please show the statements and the reasons

Which product is positive a is 2/5 -8/9 -1/3 -2/7 b is -2/5 8/9 -1/3 -2/7 c is 2/5 8/9 1/3 -2/7 d is -2/5 -8/9 1/3 2/7

Prove that the sum of two consecutive exponents of the number 5 is divisible by 30.if two consecutive exponents are 5n and 5n + 1, then their sum can be written as 30.

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels