Answer:
<u>D</u>
Step-by-step explanation:
<u>Characteristics of scientific models</u>
- They can save money and lives
- They allow scientists to test their predictions
- They allow scientists to study systems that no longer exist
- They are widely used
Out of the given options, only <u>D</u> is an incorrect statement.
Answer:
12
Step-by-step explanation:
Experimental probability is the outcome during a certain experiment. add up the total number of times it was spinned. You should get 40. To find the experimental probability of each section, simply divide the number by 40. This will give you the percentage for each one. For example, spinner A. 14/40=.35 Multiply this by one hundred to find the percentage (35%). Do this for all and let me know if you need help converting them to fractions. :)
Answer:
7a+b-9c+17d
Step-by-step explanation:
-5 ( a-2b+3c -4d) - (-3) (4a -3b+2c-d)
Distribute
-5a+10b-15c+20d+12a-9b+6c-3d
Combine like terms
7a+b-9c+17d