If he mean of 3,4,6,9,a 10 is 7 find the value of a
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10

Step-by-step explanation:

7*6=3+4+6+9+a+10

42=32+a

42-32=a

a=10

Step-by-step explanation:

Mean =7

⇒(3+4+6+9+a+10)/6=7

⇒32+x=42

⇒x=10

google dat sis

step-by-step explanation:

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.