Answer: f(a) = 1/2b
Step-by-step explanation:
-3a + 6b = a + 4b To write a formula in terms of a then we need to first solve for a.
-3a + 6b = a +4b
-6b -6b
-3a = a + -2b
-a -a
-4a = -2b
a = 1/2b
f(a) = 1/2b
Answer:
-9,18 is the only sensible answer
Step-by-step explanation:
When you have to count in how many ways you can arrange something, you need permutations: you have 9 possible students to schedule as first, the second visit will be scheduled with one of the remaining 8 students, the third one with one of the remaining 7 students, and so on until the last one, therefore:
9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1 = 362880
The students can be scheduled in 362880 ways.
The moon does. The moon is waaaay bigger than any of these combined.
What you can say is:
2 choices for the first one (metals)
5 choices for the second choice stemming off of all the possible first choices (gems)
2 choices stemming off of all those combinations (shape)
So basically it would be:
2 * 5 * 2
Which is equal to 20.
