Round 258,177 to the nearest hundred thousand.

It's 300,000

Step-by-step explanation:

if you round (25)0,000 off you get 300000, so you don't have to worry about the other digits too much

x > 1.3

step by step:

8.5−0.9x> 9.8−1.9x

step 1: simplify both sides of the inequality.

−0.9x+8.5> −1.9x+9.8

step 2: add 1.9x to both sides.

−0.9x+8.5+1.9x> −1.9x+9.8+1.9x

1x+8.5> 9.8

step 3: subtract 8.5 from both sides.

1x+8.5−8.5> 9.8−8.5

1x> 1.3

step 4: divide both sides by 1.

1x/1 > 1.3/1

51

step-by-step explanation:

73-22=51 the   mass number minus the amount of protons gives you the amount of neutrons