4(-2d-3)=12, someone please solve this for me asap
1 answer:
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Answer:
1) D
2) C
Step-by-step explanation:
1. The blue algae has an initial mass of 20 kg and doubles its mass every hour. Then after t hours, the mass of blue algae is
2. The green algae has an initial mass of 160 kg and grows at a constant rate of 0.20 kg per minute. Then after t hours (60t minutes), the mass of green algae is
Part I) At t=3:
The mass of green algae has 196-160=36 kg more mass at 3 hours.
Part II) At t=4:
The blue algae has 320-208=112 kg more mass at 4 hours.
It's easier then you'd expect it to be. There's no need to convert the fractions so that they all have a common denominator like you'd have to do when adding or subtracting fractions.
Let's take a look at something really simple.
We can multiply the numerators together so 1*2. We can multiply 4*6 to get the denominator.
This means that our fraction becomes .
Now I'm assuming since you already know how to add fractions you'll know how to simply fractions. So 2/24 will become 1/12.
Try searching it up on Khan Academy to grasp the topic better!