A key reason Inca rulers were able to keep their empire under strict central government control was that? A. everyone was able to read the same language

B. the extensive and carefully planned roads made it possible to reach all parts of the empire quickly

C. all of the people who lived in the empire had joined it voluntarily

D. the empire allowed its citizens a great deal of personal freedom

the space race was a battle to make advanced technology to get to the moon and to get a better understanding of space.

simplify brackets

8 - 2a - 7 = a + 40

simplify 8 - 2a - 7 to -2a + 1

-2a + 1 = a + 40

add 2a to both sides

1 = a + 40 + 2a

simplify a + 40 + 2a to 3a + 40

1 = 3a + 40

subtract 40 from both sides

1 - 40 = 3a

simplify 1 - 40 o -39

-39 = 3a

divide both sides by 3

-39/3 = a

simplify 39/3 to 13

-13 = a

switch sides

a = -13

john maynard keynes developed new economic theories in response to the : b) great depression of the 1930s. his theories are so important that they are known as "keynesianism". in his works he supports the idea of a government with deeper involvement and intervention to end the great depression.

what