Positive Numbers: 1,2,3,4,5,6.... Negative Numbers: -1,-2,-3,-4,-5. Numbers can only be positive or negative unless they are 0. There is no way to magically change a positive number into a negative number and vice versa. A number is either positive, negative or 0. Numbers are fixed as they are constants.
Now...
n+(+n)=n+n
n+(-n)=n-n
n-(-n)=n+n
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(-n)*(-n)=n^2
(-n)*(n)=-n^2
(n)*(n)=n^2
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If n>0,
(n)/(n)=n/n
(-n)/(n)=-(n/n)
(-n)/(-n)=n/n
Are you supposed to multiply these? If so your answer would be (5x*x^2) + (5x*-x) + (5x*-7). This comes out to 5x^3 - 5x^2 - 35x. Hope this helps!
Answer:
<h2>
there are 300 girls</h2>
Step-by-step explanation:
Answer: $553.20
Step by step explanation: Since they took the price down 29% multiply the price by 1.29 to add the 29 percent back to the total amount. 428.84 * 1.29 = 553.20