3 years ago

1.) k + 4n k = 3 and n = 7 *

Mathematics

2 answers:

Alika [10]3 years ago

8 0

1. 31
2. -5
3. 85
4. 10
5. -1

Marrrta [24]3 years ago

5 0

1.) 31
2.) 35
3.)85
4.) 10
5.)-1

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Don't know how to express the value of X as any of those answer choices

Alekssandra [29.7K]

9514 1404 393

Answer:

x = √(w(w+z))

Step-by-step explanation:

The idea with a right-triangle figure of this sort is that all of the triangles are similar. Here, x is the short side of ∆ABC, and the hypotenuse of ∆BDC. This suggests you want to write a similarity statement involving the short side and hypotenuse.

BC/AC = DC/BC . . . . . short side/hypotenuse

BC² = AC·DC . . . . . . cross multiply

x² = (w+z)w . . . . . . substitute letter values

Taking the square root and rearranging to the form of the applicable answer choice, this is ...

$\boxed{x=\sqrt{w(w+z)}}$