Question

1. scientists search for galaxies like ours by estimating the number of stars a galaxy includes. the estimate for the number of stars in the milky way galaxy is 2.5×10¹¹, and the estimate for the number of stars in the cartwheel galaxy is 4.8×10¹¹. how many more stars are in the cartwheel galaxy than in the milky way galaxy? write your answer in scientific notation.

Explanation:

Step1: Identify the values

The number of stars in the Cartwheel galaxy is $4.8\times10^{11}$, and in the Milky - Way galaxy is $2.5\times10^{11}$.

Step2: Subtract the number of stars in the Milky - Way from the number in the Cartwheel

$(4.8\times10^{11})-(2.5\times10^{11})=(4.8 - 2.5)\times10^{11}$

Step3: Calculate the result

$4.8-2.5 = 2.3$, so the result is $2.3\times10^{11}$

Answer:

$2.3\times10^{11}$