Answer:
230 cm squared
Step-by-step explanation:
Split the shape into a triangle and a rectangle
The area of a triangle is base x height / 2
20 x 9= 180/2= 90 (9 because you do 16-7 to find height of triangle)
Find the area of the rectangle=
7 x 20= 140
Add them up
140+90= 230cm squared
<em>I hope this helped :)</em>
the question says that the samples included 100 people each, so it's just 100 multiplied by the amount of samples:
7×100=700
It is 0.0623 hope it helps
I believe the 4th one
an=145+an-1 and a1=20
Answer:
B
Step-by-step explanation:
since 28 is the amount of time it takes for him to mow a lawn, we have to have an answer that involves time, which is B.