What number must be added to the expression below to complete the square?
x² -200
A. 100
B. 10
C. -100
D. -10

answer: i think it is (1,-2)

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles

i dont understand the question? ?

step-by-step explanation:

hi how are you doing today? if you ever need just tell me

step-by-step explanation: