Which number is rounded to the nearest thousand correctly? a. 78,294 → 78,300 b. 321,511 → 321,000 c. 817,849 → 819,000 d. 198,579 → 199,000

D. 198,579 → 199,000

Step-by-step explanation:

thousand is X,000

A. 78,294 → 78,300

8 is in the thousands place

we look at the 2   2<5  leave it alone

78,000

B. 321,511 → 321,000

1 is in the thousands place

we look at the 5   5>=5  we round up

322,000

C. 817,849 → 819,000

7 is in the thousands place

we look at the 8  8>5 we round up

818,000

D. 198,579 → 199,000

8 is in the thousands place

we look at the 5 5>=5 we round up

199,000

y/x=18

step-by-step explanation:

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation: