Answer:
D. 13*3^x
Step-by-step explanation:
![3^x +4*3^x^+^1= \\3^x+4*3(3^x)=\\3^x(1+[4*3])=\\3^x(1+12)=\\3^x(13)=\\13*3^x](https://tex.z-dn.net/?f=3%5Ex%20%2B4%2A3%5Ex%5E%2B%5E1%3D%20%5C%5C3%5Ex%2B4%2A3%283%5Ex%29%3D%5C%5C3%5Ex%281%2B%5B4%2A3%5D%29%3D%5C%5C3%5Ex%281%2B12%29%3D%5C%5C3%5Ex%2813%29%3D%5C%5C13%2A3%5Ex)
Answer:
x = 200
Step-by-step explanation:
Multiply by 4:
x + 120 + 2x = 720
3x = 600 . . . . . . collect terms, subtract 120
x = 200 . . . . . . . divide by 3
_____
<em>Check</em>
(200/4 +30) +(200/2) = 180
(50 +30) + 100 = 180
80 + 100 = 180 . . . . . true
_____ _____
<em>Alternate solution</em>
If you like, you can simply work with the equation given.
(3/4)x + 30 = 180 . . . . collect terms
(3/4)x = 150 . . . . . . . . . subtract 30
x = 200 . . . . . . . . . . . . multiply by 4/3
Answer:
Step-by-step explanation:
1. What is the theoretical probability that a coin toss results in two heads showing?
25%
2. What is the experimental probability that a coin toss results in two heads showing?
50%
3. What is the theoretical probability that a coin toss results in two tails showing
0.5%
4. What is the experimental probability that a coin toss results in two tails showing?
25%
5. What is the theoretical probability that a coin toss results in one head and one tail showing?
0.5
6. What is the experimental probability that a coin toss results in one head and one tail showing?
0.5
7. Compare the theoretical probabilities to your experimental probabilities. Why might there be a difference?
0.5
There you go. Remember you can figure these answers out by yourself if you really try. From now on ill be answering questions and trying to help other people. Please read from your lessons as they can help you a lot, Thank you.
The supplementary angle of 120° is 60°.
So your answer is 60 degrees.
