Four out of nine dogs weigh less then 20 pounds. what is the decimal equivalent for the number if dogs weighing under 20 pounds?

The decimal equivalent for the number of dogs weighing under 20 pounds is 0.4.

Step-by-step explanation: This is true because, to do the problem, you need to take the 4 and divide it by 9 to get your answer. So, if we were to do that, you could use a calculator or whatever you use to do math and put 4÷9, for example and press the equal sign and you would get 0.4 with the four repeating.  

a.

step-by-step explanation:

step 1 distribute 2 to every term in the parentheses

step 2 add 10 on both sides of the equal sign

inverse operation of addition