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My name is Ann [436]
3 years ago
12

Find the missing dimension of each triangle described Height: 7 in., area: 21 in2

Mathematics
1 answer:
leonid [27]3 years ago
6 0
The basic dimensions of any triangle are its area, base, and height.
They're related by the area equation; the area is half of the base times the height, or:
A=\frac{1}{2} b h
We know the area and the height, so the missing dimension has to be the base. Let's set up an equation by substituting the values the problem gives into the area equation.
21=\frac{1}{2} \cdot b \cdot 7
Can you solve this equation for b?
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What is the solution of x+4/2x-1<0
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Answer:

\large\boxed{ -4

Step-by-step explanation:

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\dfrac{x+4}{2x-1}

(x+4)(2x-1)=(x)(2x)+....=2x^2+...\to 2>0\\\\\text{therefore the parabola is op}\text{en up}

\text{Look at the picture.}

\dfrac{x+4}{2x-1}

3 0
3 years ago
Read 2 more answers
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