x *10 + (x-1) * 10
if all x are whole numbers greater than 2 and less than 8
Note: if you are using sum notation you just need x * 10 from n=2 to n=8
The answer is 155. Simply add up all of the numbers arithmetically like you would for two plus two. To make sure the answer is correct, check your work using a calculator.
20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 = 400.
The answer is: 20/2 plus 30 = 40
it add 26
20 percent of 250 is equal to 50, therefore if you add 50 to 250 you get 300.
40...
You add 20
They add up to: 30.207
Doesn't factor evenly, use quadratic -.5xx+2x+10 -.5(xx-4x-20) No factors of -20 add up to -4
-20
If you add 27 and 8, the answer is 35. 7 plus 8 is 15 and add it to 20, the answer is 35.
A dime plus a nickel plus 5 pennies add up to 20 cents.
The answer is 155. Simply add up all of the numbers arithmetically like you would for two plus two. To make sure the answer is correct, check your work using a calculator.
You take 4 times 5 which is 20 then 3 plus 2 which is 5. Add 20 plus 5 and you get 25. That's the answer.
4100
12 percent plus 20 percent equals 32 percent. To add one percentage to another simply add the numbers together and keep the percentage sign.
you add 3 then subtract7