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tekilochka [14]
3 years ago
12

Delta DFE sim Delta ACB . What is the length of DE? Diagrams are not drawn to scale.

Mathematics
2 answers:
galina1969 [7]3 years ago
8 0

Answer: 4.24264

Step-by-step explanation:

Maybe I’m wrong but this is what I got

Naddik [55]3 years ago
3 0

Equation:

a^2 +b^2 = c^2

a= D and f length

b= F and e length

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Hey there!

First, let's look at what perpendicular means. Imagine a cross, where there's all 90 degree angles. That's exactly what we're talking about when we say perpendicular. The given equation is in slope-intercept form, where we have:

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When we're writing an equation with a perpendicular slope, we use the negative reciprocal of the given slope. Thus, we can make 0.3 1/3, and take the reciprocal to make 3, and make it negative 3 as it's the negative reciprocal. Now, we know we have a line with the slope of -3 and goes through (-3, 8). We can use the x and y values in this set of points, along with the slope, to create an equation to solve for b. That gives us:

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Step-by-step explanation:

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