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Harlamova29_29 [7]
3 years ago
9

C. A rational number is a number that can be expressed as a fraction with both the

Mathematics
1 answer:
Dmitriy789 [7]3 years ago
6 0

Answer:

Step-by-step explanation:

Rational expressions are bascially an expression where one polynomial is divided by another.  And a polynomial is a series of terms like ax^b added together, where the exponents, what I labeled as b, need to be positive integers.

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The table shows the temperature (in degrees) for eight consecutive days as well as the respective number of ice cream cones an i
algol13

Answer:

B. 585

Step-by-step explanation:

A graph of the scatter plot and line of best fit is attached.

The temperature in this problem will be the independent variable, or x.  This is because we are assuming that the number of ice cream cones sold depends on the temperature; this means the number of ice cream cones will be the dependent variable, or y.

This means in our graphing calculator, we will enter temperature in the first list and the number of cones in the second.

After drawing the scatter plot, we run the linear regression; we get the values for a and b in our equation, y = ax+b:

a = 5.08

b = 46.59

This gives us the equation y = 5.08x + 46.59.

Entering our temperature, 106, in for x gives us

y = 5.08(106) + 46.59 = 585.07 ≈ 585

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X/5 = 15 (Solving Linear Equations)
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\dfrac{x}{5}=15\\
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Mrs. Baker uses 7.5 cups of sugar to make 168 cookies. To the nearest hundredth, what is the unit rate in cups of sugar per cook
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