Answer:
Step-by-step explanation:
A) 2/5 is your answer
To solve this use cross multiplication.
See attachment to see how I soled it using this method.
Hope this helps!
Step-by-step explanation:
19. 4n-7+3n-1= 7n - 8 c is the answer
20. the prime factors are 2*3*5*7*11=2310. the answer is c
21. 3x-8x-10=x+2
-5x - 10 = x + 2
-6x - 10 = 2
-6x = 12
x = -2 ( the answer is b)
Changing the subject of the formula into v means expressing v in terms of the other given variables. So given the original equation, as shown below, we can rearrange it so that we have v isolated on one side.



To isolate v, we can just multiply s to both sides and come up with the final equation below.

Thus, we have v = s(1 - F/f) with v as the subject of the formula.
Answer: v = s(1 - F/f)