Find the value of c and YZ if Y is between x and z

XY= 5.5, YZ= 2C, XZ=8.9

Step-by-step explanation:

If Y is between x and z, then XY+YZ = XZ. Given  XY= 5.5, YZ= 2C, XZ=8.9

substituting the given values into the firmula to get c we will have;

5.5+2C = 8.9

Subtract 5.5 from both sides

5.5+2C-5.5 = 8.9-5.5

2C = 3.4

Divide both sdies by 2;

2C/2 = 3.4/2

C = 1.7

Since YZ = 2C, substitute C = 1.7 into the function

YZ = 2(1.7)

YZ = 3.4

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step-by-step explanation:

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11