Answer:
400
Step-by-step explanation:
12 divided by 4 equals 3 periods where the amount of algae doubles. so from 0-4 hours the algae doubles to 100 , at 4-8 the algae doubles to 200, and then doubles to 400
Answer:
x - 3y + z
Step-by-step explanation:
Terms are just names for objects inside the equation -- anything that isn't an operation. A coefficient the is the number a given term (variable) is being mulitpled by. In this case, -3 for y, and 1 for. x. We can deduce from this the start of the expression (x has no coeff. bc of multiplicative identity)
x - 3y
We know we are missing one term, and we also know that the third term cannot be constant, so it must be another variable. In this case I have chosen Z, in theory it shouldn't really matter but z is the best variable name in this case.
31. Answer: 6 over 9
32. Answer: 12 over 20
34. Answer: 15 over 18
35. Answer: 24 over 32
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Answer:

Step-by-step explanation:
The dimensions of the rectangle are represented by functions:

The area is length × width of a rectangle.


Expand brackets and solve.


Answer:
8/21
Step-by-step explanation:
2/7 divided by 3/4
Keep
2/7
Change
divided to multiply
Flip
3/4 to 4/3
Multiply
2/7 x 4/3
Multiply the numerators and deniminators to get 8/21
Cannot be simplified so it is the final answer.