Answer:
I think true im sorry if its not
Answer:
10) x=9
11) x=25
Step-by-step explanation:
a triangle is 180º total
10) 2x+8x+90=180
10x=90
x=9
11) 3x+1+2x+2+2x+2=180
7x+5=180
7x=175
x=25
Answer:
26.3 feet
Step-by-step explanation:
We have to first find the length of the side of each tile.
The area of each tile is 19.2 
.
The area of a square is:
A = 
where L = length of side
Therefore:
6 tiles will be lined end to end to construct the walkway, hence, the length of the walkway is:
6 * 4.38 ≅ 26.3 feet
Answer:
The 12 children selected in Mrs. Smith's kindergarten class.
Step-by-step explanation:
A sample is a representative part of a population on which a research is carried out.
The study In Mrs Smith's class was to find out the number of hours the children in Kindergarten Sleep in a day. Out of the total number of students, 12 were selected for observation. The 12 childen selected is therefore a sample of the class.
