195
There is no sequence of adds or subtracts of 5, 6, 8, 9, and 10 that sum to 1. Check it with this C++ code... for (int i=0; i<32; ++i) { int sum = 0; if (i&1) sum += 5; else sum -= 5; if (i&2) sum += 6; else sum -= 6; if (i&4) sum += 8; else sum -= 8; if (i&8) sum += 9; else sum -= 9; if (i&16) sum += 10; else sum -= 10; cout << i << " " << sum << endl; }
425
2/5 + 2/4 = 9/10 9/10
4+5=9
To determine if 235 is divisible by 9, we sum its digits: 2 + 3 + 5 = 10. Since 10 is not divisible by 9, 235 is not divisible by 9. In order for a number to be divisible by 9, the sum of its digits must be divisible by 9.
There is no sequence of adds or subtracts of 5, 6, 8, 9, and 10 that sum to 1. Check it with this C++ code... for (int i=0; i<32; ++i) { int sum = 0; if (i&1) sum += 5; else sum -= 5; if (i&2) sum += 6; else sum -= 6; if (i&4) sum += 8; else sum -= 8; if (i&8) sum += 9; else sum -= 9; if (i&16) sum += 10; else sum -= 10; cout << i << " " << sum << endl; }
425
15+66=79 easy way = 10+60=70 5+6=9 70+9=79 or just use maths in your head its a simple equation
The sum of those fractions is 9 over 10 or 9/10.
Firstly what is sum and product in maths They are terms used in maths, another way of saying total The term for the total in + Addition======Sum x Multiplication===Product - Subtraction====Difference / Division====== Quotient (sorry about the computer sign for division, when will manufacturers sort it) The answer = 9, 16, 21, 24, 25 why? well Pairs of numbers with the sum of 10 are:- 1+9=10 2+8=10 3+7=10 4+6=10 5+5=10 so that means therefore 1x9=9 2x8=16 3x7=21 4x6=24 5x5=25 So the products or totals of these pairs of numbers are 9,16,21,24 and 25 Dont forget you can also reverse the sums as well, but it won't change my answer. What I mean is, mirror the sums (I am sure you know this but) 1+9 is the same as 9+1 and so on as is 1x9 is the same as 9x1 and so on Do you see this (I am sure you did) but for our younger viewers I thought it was worth mentioning Good luck with your Year 5 Maths everyone
If by "smaller than ten" you mean closer to zero than 10, then sum = -9 + -7 + ... + -1 + 1 + ... + 7 + 9 = 0 If you mean the numbers less than 10, then: sum = 9 + 7 + ... + 1 + -1 + -3 + ... = -∞ If you mean the counting numbers less than 10, then: sum = 1 + 3 + 5 + 7 + 9 = ½ × 5 × (1 + 9) = ½ × 5 × 10 = 25
Sum = 69Count = 10So mean = sum/count = 69/10 = 6.9Sum = 69Count = 10So mean = sum/count = 69/10 = 6.9Sum = 69Count = 10So mean = sum/count = 69/10 = 6.9Sum = 69Count = 10So mean = sum/count = 69/10 = 6.9
2/5 + 2/4 = 9/10 9/10
5,6,2,3,9 has a greater sum than 10,4,5,1 and 2 which has a sum of 22.
10, 9, 8, 7, 6 or 11, 9, 8, 7, 5 etc
9 2/5 + 10 3/10 9 4/10 + 10 3/10 = 19 7/10
Basic maths !... 1+3+5+7+9+11+13+15+17+19=100