The rule is put another 9 on the back of the 9, it should look like this 99.
9*8 = 72
20
Start by multiplying 11 with 9 and divide by 5. Then add 32 to the answer. In this case the answer is 51.8 degree fahrenheit.
Area is measured by multiplying length by width, so 9 feet * 11 feet = 99 square feet.
+8, +9, +10, (+11, +12, +13...)
Yes. It is the divisibility rule for 9.
Cubing a number does not mean multiplying it by 3 - it means multiplying it by itself, and then multiplying it by itself again. For example, 9 cubed is equal to 9 x 9 x 9 = 729.
The usual rule here is to avoid radicals in the denominator. To do this, just multiply top and bottom by the root of 11 in this case.
If the digit sum of a number adds up to 9 then it is divisible by 9.
11/21 or 9/17 can be equaled by multiplying the caller. so 11/21 becomes: 17*11 and 17*21= 187/357 and 9/17 becomes: 21*9 and 21*17= 189/357 As can be seen 189/357 > 187/357. So 9/17 > 11/21
You do this by multiplying 0.12 with 90.12*9=1.08
The simplest is Un = 2n + 1