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Alexxandr [17]
3 years ago
6

If f(x) = 5x2 - 3x , what is f(-3)

Mathematics
2 answers:
stiks02 [169]3 years ago
8 0

Answer: = -21

Step-by-step explanation:

5\left(-3\right)\left(2\right)-3\left(-3\right)

=-30-3\left(-3\right)

=-30-\left(-9\right)

=-21

Whitepunk [10]3 years ago
7 0
If the x between 5 and 2 is a letter then the answer is -21
If it’s a multiplication sign then it’s 19
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A half-acre building lot is five times as long as it is wide. What are its dimensions?
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we know that

A half-acre is equal to----------> 2,023.43\ m^{2}

Let

x---------> the length side of the building lot

y--------> the width side of the building lot

A------> Area of the building lot

x=5y-------> equation 1

A=2,023.43\ m^{2}

A=x*y

2,023.43=x*y --------> equation 2

substitute equation 1 in equation 2

2,023.43=[5y]*y

5y^{2}= 2,023.43\\y^{2}= 404.686\\y= 20.11\ m

<u>Find the value of x</u>

x=5y---> x=5*20.11--> x=100.55 m

therefore

<u>the answer is</u>

the dimensions of the building lot are 100.55 m* 20.11 m

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Answer:

14.76% of tortilla chips bag were fat free.  

Step-by-step explanation:

We are given the following in he question:

Number of bags of tortilla chips sold = 7981

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We have to find the percentage of bags that were fat free.

Percentage:

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