¿Cómo sabes que el cociente de 639 , 6 es mayor que 100 antes
de hacer la división?

I need this now !!

Zoe placed colored blocks on a scale in science class. each block weighed 0.8 ounces. the total weight of all the colored blocks was 12.8 ounces. how many blocks did zoe place on the scale? write and solve an equation to find the answer.

Alicia puts $400 in a bank account. each year the account earns 5% simple interest. how much money will be in her bank account in six months?

Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2