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Inessa05 [86]
3 years ago
14

Explain why i^18 must be equal to -1.

Mathematics
1 answer:
kotykmax [81]3 years ago
3 0

Answer:

i is equal to the square root of -1, and -1 to any power equals -1

Step-by-step explanation:


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​
pashok25 [27]

Answer:

Let's call:

f = price of 1 cup of dried fruit

a = price of 1 cup of almonds

In order to build the linear system, you need to consider that the total price of a bag is given by the sum of the price of cups times the number of cups in each bag, therefore:

Solve for a in first equation:

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Then substitute in the second equation:

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41/2 f + 9 - 9/2 f = 9

16 f = 0

f = 0

Now, substitute this value in the formula found for a:

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  = 3/2 = 1.5

Hence, the cups of dried fruit are free and 1 cup of almond costs 1.5$

Step-by-step explanation:

8 0
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