williamkruse080 williamkruse080

24-04-2014
Mathematics

contestada

You start with a number. Double it. Square the answer. You get 400. What number did you start with?

Respuesta :

MathG33k MathG33k

24-04-2014

10x2 = 20
20^2 = 400
So the answer is 10

Answer Link

Otras preguntas

What was one reason that anti-immigrant hysteria swept the nation? Immigrants were associated with anarchism and communism. Foreigners were held to blame for th

Define the variable and equation: Lauren's piggy bank contains 141 coins made up of nickels and dimes. The total value of the coins is $0.85. How many nickels

2.36 as a fraction simplest form

When was President Lincoln assassinated? after Robert E. Lee surrendered before the Civil War was over just after the Civil War started when his second term was

Which of these is NOT associated with the presidency of Richard Nixon? détente with USSR Environmental Protection Agency oil embargo, energy crisis space race b

B?? Which of these was created during World War I to help coordinate the economy during wartime? Creel Committee War Industries Board Department of Commerce Nat

How did Galileo revolutionize the field of astronomy?

Who were known as "carpetbaggers" and "scalawags"? Northern confederates who tried to take over Southern lands and businesses after the war Northerners who trie

What was an important outcome of the Age of Reason in the seventeenth and eighteenth centuries? The power of the monarchy was limited for the first time. Many n

The plentiful food production brought about by farming along the Tigris and Euphrates Rivers allowed Mesopotamian villages and towns to develop into city-states