Answer:
4
Step-by-step explanation:
When you add a positive number with a negative number, it technically turns into a subtraction equation. So, the easier way to look at the equation is 8-4=4
Answer:
y = 3x - 6
Step-by-step explanation:
given 9x - 3y = 18
isolate - 3y by subtracting 9x from both sides of the equation
- 3y = 18 - 9x ( divide all terms by - 3 )
y = 
- 
= - 6 + 3x = 3x - 6
This is a permutation (without replacement) so the probability is the probability of the first event times the probability of the second event. The equation would be ((x)/16)*((x-1)/(16-1))=1/12 don't ask me how I got this I'm not even sure myself. Algebra will give you an answer of x=5 or x=-4 and there can't be -4 girls in the class so there must be 5 girls.
