Answer:
z+15
Step-by-step explanation:
Cross multiply and divide. 70z = 42*25
Hope this helps!!
Answer:

Explanation:
Since
is a diameter, arc 
Given that
is a subtended central angle by two diameters,
.
Using the rule of arcs,
→



Answer:
y = 10
Step-by-step explanation:
y = 4(3) - 2
y = 12 - 2
y = 10
The 3rd one because of the laws and newton’s ways