3 years ago

Evaluate f(5):f(x) = x2 - 16x - 48

Mathematics

1 answer:

UNO [17]3 years ago

3 0

Answer:

f(5)=-103

Step-by-step explanation:

f(x) =x^2-16x-48

x=5

f(5)=5^2-16*5-48

f(5)=25-80-48

f(5)=-103

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What is the area of ABC? I need to find out how many units, please help

nikitadnepr [17]

To find the area of this figure, let's first split this into two triangles by drawing a vertical line from point B down to the bottom of the figure. We then have two triangles:

One triangle with a base of 6 units and a height of 6 units
And a second triangle with a base of 1 unit and a height of 6 units

We know that to find the area of a triangle, we must use the equation:

$A= \frac{1}{2}bh$

So let's solve for the first triangle:

$A= \frac{1}{2}(6)(6)=18 units^{2}$

The let's solve for the second triangle:

$A= \frac{1}{2}(1)(6)=3 units^{2}$

Now to find the total area of the figure, let's add them together:

$18units^{2}+ 3units^{2} = 21units^{2}$

Now we know that the area of this figure is $21 units^{2}$ .