630.821430372 to the nearest whole number

Steps needed: Round 630.821430372 to the nearest whole number.

.8 is over .5 (which is half) making it more than half a tenth. This means we can round it up to 631 since it's closer to 631 than 630.

613

Step-by-step explanation:

First ignore all decimal places except the tenths place. so we have 630.8. Then we know 5 or more add one more add one more, 4 or less let it rest. 8 is closer to 10 then it is to 0 so add  1 more to the whole number.

The answer is 631.

can you rephrase the question ? it is unclear : -)

step-by-step explanation:

7.9m and 4.3°

step-by-step explanation:

let east be +x and north be +y, x = distance * cos θ, y = distance * sin θ  

for 3.5 south, y = -3.5  

for 8.2, x = 8.2 * cos 30 and y = 8.2 * sin 30  

for 15 west, x = -15  

total x = 8.2 * cos 30 – 15 ≈ -7.9  

total y = -3.5 + 8.2 * sin 30 = 0.6  

magnitude = [(8.2 * cos 30 – 15)^2 + 0.6^2)]^0.5  

the magnitude is approximately 7.9 m  

tan θ = y/x = 0.6/-7.9  

the angle is approximately 4.3˚ north of west