Who used place value and zero in mathematics? a. aztec b. maya c. inca

The Maya's used place value and zero in mathematics.

Explanation:

a is wrong, the Aztecs didn't write the value for absence, they built their mathematics considering what we know as fractions. Combining two different elements separated by a line to express a number.

b. is right. The Mayans developed a sophisticated math system, in which they found value in the absence and gave it a figure to represent it. They also established a combination system of small integrated figures that had the order to express value, very similar to the Arabic system.

c the Incas didn't find value on absence and they created a system of dots and thread to express amount. Their numbers consisted of the combination of dots perforated by lines to express groups and create bigger numbers.

the  equal rights amendment  (era) states: "equality  of  rights  under the law shall not be denied or abridged by the united states or by any state on account of sex." congress first introduced the era in 1923, but the campaign for ratification took off in the 1960s during the  civil rightsmovement.

d)to gain support for the independence movement.

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