SELECT ALL THAT APPLY Which equations could you use to solve the following problem?

Seventy-eight is 55% of what number?
1. 78 = (0.55)w
2. p = (0.85)78
3. x/78 = 55/100
4. 78/x = 55/100

The answer I THINK was the best is the fourth one !

Step-by-step explanation:

I think because before you calculate, you have To put 78 / with an x because you still don't know what is the number !

And after you have To equal this with 55/100 To know the answer !

I hope i helped you !

the first one and last one.

Step-by-step explanation:

i had he same question!!! hope this helps

55

step-by-step explanation:

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92