Answer: <em>81</em>
Step-by-step explanation:
<em>3^4</em>
<em>3x3x3x3</em>
<em>3x3=9</em>
<em>9x3=27</em>
<em>27x3=</em><em>81</em>
Answer:
x = ± 
Step-by-step explanation:
Given
y = x² + 7 ( subtract 7 from both sides )
y - 7 = x² ( take the square root of both sides, thus
x = ± 
Mario's mistake is made when doing reciprocal.
7 / (2/3) =
I cannot divide by 2/3, but if I do reciprocal, I can multiply by 3/2. The seven comes first, so it should not be flipped.
Mario's mistake was when he flipped the 7 (or 7/1) to 1/7.
Answer:
C. P69,256.82
Step-by-step explanation:
We know that,
The amount formula in compound interest is,

Where, P is the principal amount,
are the annual rate for the different periods,
are the number of year for different periods,
are the number of periods,
Given,
A = P 200,000,
,
,
,
,
, 
Thus, by the above formula the final amount would be,




Option C is correct.
Answer:
Step-by-step explanation:
8 and 47