Okay so here's what you do. The arrows mean the the sides are the same length so the > line is 20in. And then they cut this up into 2 triangles and a trapezoid. BUT If you look closely 1 of the Triangles and the Trapizoid make a Parallelogram. The formula for finding the area of a Paralellogram is just b*h. So then you just need to find the area of the other triangle which would be 8*20/2 (the formula is b*h/2 for triangles) and then you add those to answers together. (So it's 20*16+8*20)
Answer:
12.5 miles per hour.
Step-by-step explanation:
There are 60 minutes in 1 hour so:
12 minutes = 12/60 = 1/5 of an hour.
So his speed in mph
= distance in miles / time in hours
= 2.5 / 1/5
= 2.5 * 5
= 12.5 miles per hour.
Answer:
-1/2
Step-by-step explanation:
Answer:
The country's population decreased about 5.8 % during this time period.
Step-by-step explanation:
Population in 1990 = 164 million
Population in 2010 = 155 million
Determine the percent decrease
The formula used is: 
We have :
Initial Value = 164 million (164,000,000)
New Value = 155 million (155,000,000)
Finding percent decrease
So, The country's population decreased about 5.8 % during this time period.
