A₆ =12
a₇ = ?? = x
a₈ 27
In this case x is the geometric mean & as per the formula
geometric mean of 2 numbers =√(a₆ * a₈) = √(12*27)
& x=18.
Proof:
Find the common ratio between a₇ & a₆ ==> = ( x) / 12
now find the common ration between a₈ & a₇ ===> =27 / (x)
x/12 = 27/x ===> x² = 12*27 ==> x² = 324 & x =√324 = 18
Answer:(9,2) I assume I don’t really understand the question
Step-by-step explanation:
Answer:
16/45
Step-by-step explanation:
4/9 x 4/5=16/45 you just multiply straight across
Answer:
I guess it's 1/6
Step-by-step explanation:
make it braintliest please
Answer:
she must wash 8 cars because 7 x 8 = 56 so yeah bye
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