The perimeter is 18 meters
Answer: A = 40
Step-by-step explanation: The formula for the area of a triangle is b*h÷2. If you follow this formula while solving these, you will always be correct.
The slope is x= -3 if that helps
Answer:
For example the age of the Earth (see above) can be written as 4.6 X 109 years. This means that this number has 9 places after the decimal place - filled with zeros unless a number comes after the decimal when writing scientific notation. So 4.6 X 109 years represents 4600000000 years.