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Nataly [62]
3 years ago
6

A 25-pound bag of bird food costs $19.50. A 30-pound bag of the same bird food costs $22.80. Which bag of bird food is the bette

r buy?
Mathematics
1 answer:
Ierofanga [76]3 years ago
7 0

Answer:

The 30 pound bag of bird food

Step-by-step explanation:

19.50 divided by 25 = 0.78 cents a pound

22.80 divided by 30 = 0.76 cents a pound

Therefore, 0.76 cents is cheaper :)

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The quadrilateral ABCD has area of 58 in2 and diagonal AC = 14.5 in. Find the length of diagonal BD if AC ⊥ BD.
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(look in the the Step by step)

Step-by-step explanation:

When the diagonals of a quadrilateral are perpendicular, the area of that quadrilateral is half the product of their lengths.

.. A = (1/2)*d₁*d₂

Substituting the given information, this becomes

.. 58 in² = (1/2)*(14.5 in)*d₂

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<h2>Answer:</h2>

A. It is a many-to-one function.

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Hello! It will be a pleasure to help to figure out what's the correct answer to this problem. First of all, we have the following function:

f(x) = 2x^3 + 2x^2-x

When plotting this function, we get the red graph of the function shown below. So let's solve this as follows:

<h3>A. It is a many-to-one function.</h3>

True

A function is said to be many-to-one there are values of the dependent variable (y-values) that corresponds to more than one value of the independent variable (x-values). To test this, we need to use the Horizontal Line Test. So let's take the horizontal line y=0.5, and you can see from the first figure below that y=0.5 is mapped onto x=-1.241 \ x=-0.344 \ and \ x=0.585. so this is a many-to-one function.

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<h3>C. It is not a function.</h3>

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