Answer:
1. 
2. 
3. 3
4. -1 > x
Step-by-step explanation:
1.

2.

3. All share the factor of 3
4. Open circle is used for < (less than) or > (greater than). Shade to the right for > or ≥.
I hope this helps! May I please have brainliest? :)
Answer:
u=30
x=150
z=150
y=30
Step-by-step explanation:
u=y [ being vertically opposite angle]
x+u=180[ being linear pair]
x+30=180
x=180-30
x=150
z=x[being vertically opposite angle]
z=150
y=u[ being voa]
Step-by-step explanation:
given,radius =5 m
height =8 m
now, v=pi×r^2×h
=(3.14×5^2×8)m^3
=628m^3
therefore the volume is 628m^3 is the answer
Answer:
it could be C or a
Step-by-step explanation:
more likey c be sorry if it's wrong
Answer:
This was an observational study.
Step-by-step explanation:
Given is that parents of children completed a questionnaire on the child’s light exposure both at present and before the age of 2 years.
This was an observational study since there is no treatment or control group.
We know that treatment, control groups or treatment groups are not specific to randomized control experiments.