Answer:
40,608,000 km or 4.0608×
km
Step-by-step explanation:
Speed(km/h) = Distance(km)/Time(Hours)
Distance = Speed × Time
6 days = 24 × 6 = 144 hours
282,000 km/h × 144 hours = 40,608,000 km
Answer:
10 divided by 2 =5
Step-by-step explanation:
As the intervals are of 2.. and they extend all over from 0 to 10.. hence dividing it..
So, first lets define our variables:
let x = the number of dimes
let y = the number of nickels
so our first equation would be x+y = 16
Since dimes are 10 cents and nickels are 5 cents the next equation would be as follows:
.10x+.05y = 1.35
now change the first equation so y = -x+16
now substitute:
.10x+.05(-x+16) = 1.35
then multiply so you get .10x+-.05x+0.8=1.35
combine like terms and you get .05x+0.8 = 1.35
then subtract 0.8 from both sides and you get .05x = 0.55 then subtract
and you get x = 11 then substitute 11 for where x should be and you should get y = 5
So, you have 11 dimes and 5 nickels
You must halve the linear coefficient and then square it. In this case:
(2/2)^2=1 so you must add 1 to both sides of the equation...
x^2+2x+1=14 now the left side is a perfect square...
(x+1)^2=14
You need z as a whole number. So multiply everything by 2. You get 20=z+14. You need to get z by itself, so subtract 14 from both sides to get 6=z. The answer is z=6. I hope this helps! :)