Based on counting the number of galaxies in a small patch of the sky and multiplying by the number of such patches needed to cov
er the entire sky, the total number of galaxies in the observable universe is estimated to be approximately A) 100 million.
B) 100 billion.
C) 1 billion.
D) 1 trillion.
E) 10 billion.
Step-by-step explanation: first you divide 33/4 and (-21/2), then reduce the numbers to -33/4 times 2/21 after you reduce both fractions multiply -11/2 times 1/7 and you get -11/14 your alternative form would br -0.785714
