3% x
100 $700
Cross multiply and divide your only number which is 100.. 3 is your percent so it has to be over 100 and your x is your variable, your unknown number over $700 Set it up like a Fraction ! 3 times 700= 2,100 divide it by 100 which is equaled to 21 So 21 is like your percent !! Hope this helped...
- I’m assuming the expression implies the following:
(1-n)/(n^2 - 1)
The steps goes as follows:
= -(n-1)/(n^2-1) (factored a negative out)
= -(n-1)/[(n+1)(n-1)] (Factored denominator into a difference of squares, but don’t just blindly accept the fact, expand it and you should get the original denominator)
At this point, the (n-1) terms cancel, as you should know: a real number, besides 0, over itself is 1.
= -1/(n+1) , which is the answer
Note: You could also see it as 1/-(n+1) or 1/(-n-1)
A = s²
A = z² + 18 z + 81
z² + 18 z + 81 = z² + 9 z + 9 z + 81 = z ( z + 9 ) + 9 ( z + 9 ) =
= ( z + 9 ) ( z + 9 ) = ( z + 9 )²
Answer:
C ) side = z + 9
Answer: 3 good luck
Step-by-step explanation:
She bought 4 spoons and 5 forks