Pls answer this one By prime factorisation method factorize 400 and find the sum of prime numbers involved.

The jewelry store is having a sale. necklaces that were regularly priced at $23.50 are on sale for $18.80. what is the percentage of decrease in the price of necklaces?

Solve the equation x/4 - 5= -8 -27 -12 -7 12

Me, the vertices of quadrilateral coat are c(2,0), o(7,0), a(7,2) and t(2,2). prove that coat is a rectangle.