Answer:It's the 1st one
Step-by-step explanation:
Let's solve the sine equation.
1. Express sine function in the left side of equation:
.
2. Use the genereal solution to get the solution of your equation:
, where .
3. Find :
.
4. Substitute part 3 into part 2 and express x:
, where
, where .
5. Solutions of your equation are:
, where .
Answer:
3
Step-by-step explanation:
ill reply to this gimmie a moment
Answer: D = 300 km
Total distance travelled is 300 km
Step-by-step explanation:
Distance = speed × time
The total distance travelled is the sum of the two distance travelled during the phases of speed.
D = v1t1 + v2t2 .....1
Given ;
speed v1 = 60km/hr ; v2 = 120km/hr
Time taken t1 = 1 hr ; t2 = 2 hr
Substituting the given values into equation 1, we have;
D = 60×1 + 120×2 = 60 + 240
D = 300 km
Total distance travelled is 300 km
Answer:
-4a +22b
Step-by-step explanation:
add the ones with same variable