40/50 is the ratio because the cos formula is adjacent over hypotenuse and you can reduce it to 4/5 as a fraction :)
Answer:
temperature
Step-by-step explanation:
it dropped by 15 so it subtracted 15. - 15
X= -3
2/3x-10=12
Step 1: Add 10 to both sides.
2/3x=-2
Step 2: Multiply both sides by 3/2.
x= -3
Yea because every input has only one output
Word Problem:
Take a number, <em>x</em>, double it and then take that result away from 10.
Expression: