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MaRussiya [10]
3 years ago
6

In the diagram below, ab and bc are tangent to o. what is the measure of adc

Mathematics
2 answers:
vladimir1956 [14]3 years ago
8 0

Answer:

The correct option is B. 252°

Step-by-step explanation:

There are 360° in the circle.

So using the relation :

\frac{\text{(arc ADC - arc AC)}}{2} = \angle ABC

⇒ arc ADC - arc AC = 2 × ∠ABC

⇒ arc ADC - 108° = 2 × 72°

⇒ arc ADC - 108° = 144°

⇒ arc ADC = 144° + 108°

⇒ arc ADC = 252°

So, The measure of ∠ADC = 252°

Hence, The correct option is B. 252°

Andrej [43]3 years ago
4 0

Answer:

Step-by-step explanation: 252 apex

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Lena reflected this figure across the x-axis. She writes the vertices of the image as A'(−2, 8), B'(−5, 6), C'(−8, 8), D'(−4, 2)
garik1379 [7]

Answer:

Option A) she reflected the pre-image across the y-axis

Step-by-step explanation:

we know that

When reflect a point across the the x-axis the rule of the reflection is equal to

(x,y) -----> (x,-y)

When reflect a point across the the y-axis the rule of the reflection is equal to

(x,y) -----> (-x,y)

In this problem we have

A(2,8),B(5,6),C(8,8),D(4,2)

Applying the rule of the reflection across the x-axis

The coordinates of the image would be

A'(2,-8),B'(5,-6),C'(8,-8),D'(4,-2)

Applying the rule of the reflection across the y-axis

The coordinates of the image would be

A'(-2,8),B'(-5,6),C'(-8,8),D'(-4,2)

therefore

she reflected the pre-image across the y-axis.

8 0
3 years ago
PLZ HELP ITS 40 points
IRINA_888 [86]

Answer:

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communitive

11x+12

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2(b+8)+2(3b)

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Step-by-step explanation:

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8 0
3 years ago
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For each of the equations below, solve for y in terms of x. !<br> a. 2x – 3y = 12
ira [324]

Answer:

\large\boxed{y=\dfrac{2}{3}x-4}

Step-by-step explanation:

2x-3y=12\qquad\text{subtract}\ 2x\ \text{from both sides}\\\\2x-2x-3y=12-2x\\\\-3y=12-2x\qquad\text{divide both sides by (-3)}\\\\\dfrac{-3y}{-3}=\dfrac{12}{-3}+\dfrac{-2x}{-3}\\\\y=-4+\dfrac{2}{3}x

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3 years ago
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julsineya [31]
Find the Distance Between Two Points
Use the distance formula to determine the distance between two points.
Exact Form:
√85

Decimal Form:
9.21954445
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2 years ago
The weight of a child in 1990 was 40 lb. By 2005, the child's weight
Maslowich

Answer:

225%

Step-by-step explanation:

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90/40 = 2.25.

2. Multiply by 100 to get the percentage.

2.25 x 100 = 225%

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3 years ago
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