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Genrish500 [490]
3 years ago
5

XY is the diameter of a semicircle. XY is of length 10.2cm.

Mathematics
2 answers:
KATRIN_1 [288]3 years ago
7 0

\\ \sf\longmapsto ZY^2=XY^2-XZ^2

\\ \sf\longmapsto ZY^2=10.2^2-5.9^2

\\ \sf\longmapsto ZY^2=104.04-34.81

\\ \sf\longmapsto ZY^2=69.23

\\ \sf\longmapsto ZY=\sqrt{69.23}

\\ \sf\longmapsto ZY=8.3cm

Sergeu [11.5K]3 years ago
5 0

easy, u have to do

10.2 cm - 5.9 cm

and that will equal 4.3

hope that helped! :]

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o-na [289]

Let x = Parent's age now  y = son's age now

Then, x-5 = parent's age five years ago

        y-5 = son's age five years ago

     So, x-5 = 5(y-5)

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Son's age 8 years from now = y+8

    So, x+8 = 3(y+8)

           Simplifying, we have x - 3y = 16

We have the system of equations:  x - 5y = -20

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Subtract the equations to obtain -2y = -36

                                                  y = 18

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Parent is 70 years old and the son is 18 years old.  

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3 years ago
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Please answer this correctly
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Step-by-step explanation:

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we know the blue and white paints are on a 1.5 : 5 ratio, thus, if we have a total of 16.25 gallons of paint to be split along that ratio, we can simply divide 16.25 by (1.5+5) and distribute accordingly.

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