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aleksklad [387]
4 years ago
8

SOMEBODY HELPPPPPPPPPPP

Mathematics
1 answer:
MrRa [10]4 years ago
5 0

Hi there!

For this, we are given a set of equations which is then equal to f(x), a function based off an input x. This means that we can correspond x to the input and f(x), or what the functions are equal to, to the output.

This means we can essentially just try inputs into the equations, and see if the output matches:

x * 5 - 11:

2  * 5 - 11 = 10 - 11 = -1, not the output, thus this isn't the equation.

x^3 + 3:

2 ^ 3 + 3 = 8 + 3 = 11

3 ^ 3 + 3 = 27 + 3 = 30

4 ^ 3 + 3 = 64 + 3 = 67

5 ^ 3 + 3 = 125 + 3 = 128

As we can see, all of these inputs and outputs match, this means that this equation is the correct one. Therefore, your answer is the second choice, x^3 + 3.

Hope this helps!

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Answer:

9/25

Step-by-step explanation:

36/100 = 9/25

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Read 2 more answers
Bhavik bought 3 liters of milk and 5 loaves of bread for a total of $11. A month later he bought 4 liters of milk and 4 loaves o
Greeley [361]
Let the price of 1 liter of milk be m, and let the price of 1 loaf of bread be b.

3 liters of milk cost 3m.
5 loaves of bread cost 5b.
The total is $11.
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3m + 5b = 11

4 liters of milk cost 4m.
4 loaves of bread cost 4b.
The total is $10.
That gives us the second equation:

4m + 4b = 10

We have a system of two equations.

3m + 5b = 11
4m + 4b = 10

Multiply the first equation by -4.
Multiply the second equation by 3.
Then, add the equations.

      -12m - 20b = -44
  +   12m + 12b = 30
---------------------------
                   -8b = -14

b = 14/8 = 7/4 = 1.75

Now substitute b with 1.75 in the first original equation.

3m + 5b = 11

3m + 5(1.75) = 11

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3m = 2.25

m = 0.75

Answer: A liter of milk costs $0.75, and a loaf of brad costs $1.75.
6 0
4 years ago
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