2n+13
13 and 26
Let 'N' be the number. The sum of the number and 13 is (N+13).The square of the sum of the number and 13 is (N+13)2N2 + 26 N + 169.It's probably easier to add 13 to the number and then square that answer ... less arithmetic.
The smaller number is 8, and the larger one is 21. 8 + 13 = 21 8 + 21(2) = 50
2x + 7
2n+13
31 Because, twice 31 is 62. And, 62 plus 13 is 75.
13 and 26
2(8 + 5) = 2(13) = 26
to sum two numbers you add them together then to get twice that you multiply the sum by 2 e.g. if the two numbers are 5 and 8 the sum = 5 + 8 = 13 twice that is 13 x 2 = 26
If the number is n, then twice the number is 2n and the sum of the two is n + 2n = 3n.
"the sum of 2" and "twice" "a number" "is" "36"2+2x=36 â–
10
Let 'N' be the number. The sum of the number and 13 is (N+13).The square of the sum of the number and 13 is (N+13)2N2 + 26 N + 169.It's probably easier to add 13 to the number and then square that answer ... less arithmetic.
If the sum of a number and 4 is (X + 4) then twice that is 2(X + 4) which is 2X + 8
13 and 7
The smaller number is 8, and the larger one is 21. 8 + 13 = 21 8 + 21(2) = 50