C it is systematic sampling
Answer:
hi
Step-by-step explanation:
Answer: 13
Step-by-step explanation:
180 - (154 + 13) = 13
the triangle is isosceles
Answer:
1) 128
2) 32
Step-by-step explanation:
1) 8C1×4C1×4C1 = 128
2) 5C1 + 5C2 + 5C3 + 5C4 + 5C5
= 32
In 75 minutes you travelled 30 kilometers, so the rate is 30/75=0.4km/minute
another way is to use the two points to find the slope: m=(30-0)/(75-0)=0.4