It is already in a decimal
I think you mean percent, so it will be 90%
Sorry if that is not what you mean
Answer: The rate of boat is 60 kmh.
The rate of current is 5 kmh.
Step-by-step explanation:
Alright, lets get started.
Suppose the rate of boat in still water is : b kmh
Suppose the rate of current is : c kmh
When the boat is going upstream, the relative speed will be :
When the boat is going downstream, the relative speed will be:
Boat travels 220 kilometers in 4 hours going upstream.
.................. equation (1)
It travels 260 kilometers going downstream in the same amount of time.
................... equation (2)
Adding equation 1 and 2
Plugging the value of b as 60 in equation 2
Hence the rate of boat is 60 kmh.
Hence the rate of current is 5 kmh.
Hope it will help :)
Answer:
1. Which angles are adjacent.
CBX and FBC
Step-by-step explanation:
Okay so an adjacent angle is two angles with a common side. This means angles CBX and FBC are adjacent because they have the common side of "BC/CB"
Answer
2. Find the sum of the interior angles of a nonagon
1,260
Step-by-step explanation:
A nonagon is a 9 sided polygon with angles of 140. It wants the sum of all the angles. Since it has 9 sides, it has 9 angles. Now you can add 140, 9 times, or do 140 x 9. This gets you 1,260.
Answer
3. The measure of angle 3 is 101. find the measure of angle 4.
79
Step-by-step explanation.
Okay so both angles are against the same intersecting line, this means their sum must be 180. All we have to do here is subtract 180 and 101. this gets us 79.
Answer
4. Find the measure of each interior angle of a regular polygon with 12 sides.
1800
Step-by-step explanation.
Okay so a 12 sided regular polygon is a dodecagon. This has 12 angles with the degree of 150. This means 150 x 12 just like the 2nd question about nonagons. So 150 x 12 is 1800
Now that i've showed you how to do the first 4 you can apply the rest of the information on your own for 5 and the rest of the test.
It is right, because 36 is dividable by 6 and 9 (haha thats the funny number)