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3 years ago

Find the value of x, if angle x measures 102 degrees

Mathematics

2 answers:

Amanda [17]3 years ago

6 0

This is a kite so m < X = m < Z
Total angles in a kite = 360 degrees.
So we have the equation

2(102) + 7x + 4 + 5x - 4 = 360
204 + 12x = 360
12x = 360 - 204
12x = 156
x = 156/12 = 13 (answer)

Over [174]3 years ago

3 0

The answer is B
Have a good day!

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Solution :

We know that

$H_0: \mu_1 = \mu_2=\mu_3$

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The variance between the groups

$s_B^2=\frac{\sum n_i\left( \overline X_i - \overline X_{GM}\right)^2}{k-1}$

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$s_W^2=\frac{\sum(n_i-1)s_i^2}{\sum(n_i-1)}$

$=\frac{(14-1)19.96154+(14-1)14.68681+(7-1)36.57143}{(14-1)+(14-1)+(7-1)}$

$=\frac{669.8571}{32}$

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The F-test statistics value is :

$F=\frac{s_B^2}{s_W^2}$

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The ANOVA table is :

Source Sum of squares d.f Mean square F

Between 127.1143 2 63.55714 3.036212

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