Please answer and use statement reason

Mathematics

1 answer:

masha68 [24]2 years ago

8 0

Answer:

x = 15

Step-by-step explanation:

FD and AC are parallel because both are perpendicular to EB. Angle EDF and Angle DCA are congruent because they are corresponding angles. The measure of Angle DCA is also 3x because congruent angles have the same measure.

Now consider Triangle ACD. Because the sum of all three measures of the angles in a triangle add up to 180°.

x + 8x + 3x = 180°

12x = 180°

12x/12 = 180/12

x = 15

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The ratio of the measures of the sides of a triangle is 9:7:3 if the perimeter of the triangle is 266 inches, find the length of

Readme [11.4K]

Hey there,

Answer:
9 : 7 : 3
Total units = 19 units
19 u = 266 inches
1 u = 266 / 19
= 14 inches
Shortest side = 3 u
3 u = 14 x 3
= 42 inches

Hope this helps :D

<em>~Top♥</em>

3 0

4 years ago

Let the random variable x be equally likely to assume any of the values 1/10, 1/5, or 3/10. determine the mean and variance of x

Keith_Richards [23]

Since the values are equally likely and equally spaced, their mean is the middle one.
the mean is 1/5

The variance is the average of the square of the deviations from the mean.
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6 0

3 years ago

HELP HELP PLEASE DUE TONIGHT

Serjik [45]

Answer:

Gurl... I GOT CHU!!

Step-by-step explanation:

1. x = -9

2. y = -42

3. x = -15

4. z = 15

5. x = -3