3 years ago

What is the area of the triangle?

Mathematics

1 answer:

alexandr402 [8]3 years ago

3 0

Answer:

15/2

Step-by-step explanation:

Hello,

the area of a triangle is b*h/2

we can set BC as the base because AC is harder to calculate.

Then we draw an imaginary height.

There's no way to really explain, but the height would be 5 here, since 3 - -2 = 5

The base is 3

3*5/2 = 15/2

Thanks,

lacampanella

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What is the vertex of the graph of #y=x^2+3x-4#?

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To find the x value of the vertex we do:

x = $\frac{-b}{2a}$
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x = $\frac{-3}{2(1)}$
x = $\frac{-3}{2}$

Now we plug this x into the equation and solve for y.

y = $(\frac{-3}{2}) ^{2} + 3( \frac{-3}{2} ) + 4$
y = $\frac{9}{4} - \frac{9}{2} + 4$
y = $\frac{9}{4} - \frac{18}{4} + 4$
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Your vertex (if my math is correct) is at $( \frac{-3}{2}, \frac{7}{4} )$