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il63 [147K]
3 years ago
14

The average of −8 and 7 according to my online hw thingy 1/2 is incorrecto

Mathematics
1 answer:
kirill [66]3 years ago
7 0
Add -8 + 7. You get -1.
-1 ÷ 2 is -.5, or -1/2. 
You forgot the negative.
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Calculate the area of triangle ABC with altitude CD, given A(6,-2) B(1,3) C(5,5) D(2,2)
Vikki [24]
The area will be half the product of the lengths of AB and CD.

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|CD| = √((5-2)² +(5-2)²) = 3√2

Area = (1/2)*(5√2)*(3√2) = (1/2)*(15*2) = 15

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6 0
2 years ago
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Archy [21]

Answer:

249.6

Step-by-step explanation

There are 4 identical equilateral triangle,

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3 years ago
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\begin{cases}4x+4y=2x+12\quad|-2x\\4x+y=x+8\quad|-x\end{cases}\\\\\\
\begin{cases}4x+4y-2x=12\\4x+y-x=8\end{cases}\\\\\\
\boxed{\begin{cases}2x+4y=12\\3x+y=8\end{cases}}


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3 years ago
To make 3/4 pound of mixed nuts, how many pounds of cashews would you add to 1/8 pound of almonds and 1/4 pound of peanuts?
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The value of the x-intercept for the graph of 4x-5y=40 is
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\hbox{x-intercept - y=0}: \\
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8 0
2 years ago
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