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krek1111 [17]
3 years ago
14

What is the sum of 2 4/5 + 1 3/9 =

Mathematics
2 answers:
Westkost [7]3 years ago
5 0
2 4/5= 14/5   1 3/9=12/9
14/5= 126/45    12/9=60/45
126/45+60/45=186/45
186/45= 4 6/45
Sergeu [11.5K]3 years ago
5 0
The answer is 4 and 2/15 You have to change the numbers so that they both have a common denominator, add them, then simplify. If you thought this answer was helpful, please mark it as Brainliest! I would greatly appreciate that!
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A population of butterflies grows in such a way that each generation is simply 1.5 times the previous generation. There were 350
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Answer:

378.5 or just 378

Step-by-step explanation:

This is a linear model with x representing the number of generations that's gone by, y is the number of butterflies after x number of generations has gone by, and the 350 represents the number of butterflies initially (before any time has gone by.  When x = 0, y = 350 so that's the y-intercept of our equation.)

The form for a linear equation is y = mx + b, where m is the rate of change and b is the y-intercept, the initial amount when x = 0.

Our rate of change is 1.5 and the initial amount of butterflies is 350, so filling in the equation we get a model of y = 1.5x + 350.

If we want y when x = 19, plug 19 in for x and solve for y:

y = 1.5(19) + 350

y = 378.5

Since we can't have .5 of a butterfly we will round down to 378

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