Answer:
-3+7=4 is the answer if thats what you is looking for
Step-by-step explanation:
Answer:
A) x-8
Step-by-step explanation:

because

Answer:
The 4th option.
Step-by-step explanation:
Rational numbers are numbers which can be expressed as a fraction. Irrational numbers are numbers which can't be expressed as a fraction. Square root 16 is a perfect square so it is a rational number.
The formula for triangle area is b•h/ 1/2. so you would do 12•5=60. then divide that by 2 to get 30