Answer:
![\frac{63}{15 - c} - \frac{63}{15 + c} = 4](https://tex.z-dn.net/?f=%5Cfrac%7B63%7D%7B15%20%20-%20c%7D%20-%20%5Cfrac%7B63%7D%7B15%20%20%2B%20c%7D%20%3D%204)
Step-by-step explanation:
The systems of equations are
Let us assume the rate of the current be c
Now actual speed against the current is (15 - c)
And, the actual speed with the current is (15 + c)
Here we applied the time formula i.e. distance by speed
Also the upstream time - downstream time = 4
Now the equations are
![\frac{63}{15 - c} - \frac{63}{15 + c} = 4](https://tex.z-dn.net/?f=%5Cfrac%7B63%7D%7B15%20%20-%20c%7D%20-%20%5Cfrac%7B63%7D%7B15%20%20%2B%20c%7D%20%3D%204)
Answer:
5 to 2
Step-by-step explanation:
You can simplify both 20 and 8 by 4.
20/4 = 5
8/4 = 2
Answer: C: 2/5
Step-by-step explanation:
because there is 10 tiles total in two bags with 5 tiles each
each bag has two vowels
so part over whole means 2/5
Answer:
33.1
Step-by-step explanation:
First you need to find the area of the circle. The radius is 10 which means that the area is 314. Since a circle has 360 degrees, and the shaded area is 38 degrees, you need to divide 314 by 360 which is 0.87. Then multiply by 38 because the shaded sector is 38. 0.87 x 38 = 33.1.
That is the answer.
Answer:
Step-by-step explanation:
<u>The range is the difference between the lowest and the highest values of the set:</u>
The answer is TRUE