Answer:
B. A sample in which the subjects themselves decide whether to be included in the study.
Step-by-step explanation:
In other words a voluntary response sample is a sample made up of volunteers o people who choose to be inlcuded.
Answer:
y = 1/2x + 2
Step-by-step explanation:
y = 1/2x + b
3 = 1/2(2) + b
3 = 1 + b
2 = b
<span>surface area=4π<span>r2</span>=2700 c<span>m2</span></span>
<span><span>r2</span>=<span>2700<span>4π</span></span>=<span>2700<span>4×3</span></span>=225</span>
<span>r=<span>225<span>−−−</span>√</span>=15</span>
<span><span>volume=<span>43</span>π<span>r3</span>=<span>43</span>×3×<span>153</span>=13500 c<span>m3</span></span></span>
Answer:
The straight one, 4th row.
Step-by-step explanation:
linear graph forms a straight line.
y=mx+c
Answer with Step-by-step explanation:
We are given that:
tanA = 0.45
tanA= 
= 
⇒ =0.45
⇒ 
=
⇒ =
⇒ AC= 20
Hence, by pythagoras theorem
AB²=AC²+BC²
AB²=20²+9²
AB²=481
⇒ AB=21.9 units
Hence, the approximate length of AB is:
22 units
