Answer:
Her friend is correct
Step-by-step explanation:
40 * 20% = 8
40+8=48
1/4 would be * 2 since 4*2=8 so 1*2=2 so the answer is 2/8 in total
<em><u>Solution:</u></em>
Given that,
<em><u>Use the following log rules</u></em>
Rule 1: 
Rule 2: 
Rule 3: 
Break 162 down to primes:
Thus we get,
Next
Break 324 down to primes:
Next
By rule 2
Next
By rule 2
Thus the given are evaluated in terms of x and y
Area of the box:
A = 2 a² + 4 a h = 600 cm²
h = a ( the box is a cube )
A = 6 a² = 600 cm²
a² = 100
a = 10 cm
V = a³ = 10³ = 1000 cm³
Answer:
step 2
and then also in step 3 compensating the error in step 2
Step-by-step explanation:
I think I just answered this for another post.
sin(a - b) = sin(a)cos(b) - cos(a)sin(b)
so, step 1 is correct :
sin(A - 3pi/2) = sin(A)cos(3pi/2) - cos(A)sin(3pi/2)
but step 2 suddenly and incorrectly switched that central "-" to a "+".
yes, sin(3pi/2) = -1, but that is still an explicit factor in step 2. so it was not used to flip the central operation from subtraction to addition, and therefore this change was a mistake.
then, in step 3, another error was made by just ignoring the "-" sign of "-1" and still keeping the central "+" operation. this error compensated for the error in step 2 bringing us back by pure chance to the right result.
