
Substract '-3.4x' at LHS nad the RHS of the above expression.

Add '4' on both LHS and RHs of the above expression.
Yes because 3² + 4² = 5²
to be sure
9 + 16 = 25
25 = 25
Answer:
d
Step-by-step explanation:
BC supplementary means they add up to 180 and answer d adds up to 180
Step-by-step explanation:
Mean=sum of observations/no. of observations
Answer:
60
Step-by-step explanation:
6% of 250 = 15 = 250 * 0.06
30% of 250 = 75 = 250 * 0.7
75-15=60