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anzhelika [568]
3 years ago
6

Given: DR tangent to Circle O.

Mathematics
2 answers:
BlackZzzverrR [31]3 years ago
4 0

Answer:

I believe the answer is 110.

aev [14]3 years ago
4 0

Answer:

<h2>110°</h2>

Step-by-step explanation:

In this problem we need to use the Inscribed Angle theorem, which states that an inscribed angle is one-half its subtended arc.

\angle C=\frac{1}{2}arc(DB)=70\°

Then, we use the theorem about a cyclic quadrilateral, which is an inscribed quadrilateral: "the opposite angles in a cyclic quadrilateral are supplementary".

\angle C + \angle A = 180\°\\\angle A = 180\° - \angle C\\\angle A = 180\° - 70\° \\\angle A = 110\°

Therefore, the answer is 110°

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what's your question?

5 0
4 years ago
Make a the subject of the formula: T=a+4
WINSTONCH [101]

Let's solve for a.

t=a+4

Step 1: Flip the equation.

a+4=t

Step 2: Add -4 to both sides.

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<u>Answer:</u>

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6 0
3 years ago
In a triangle, angle B is half of angle A. Angle C is 5 more tham double angle A. What are the measurements of each angle?
Furkat [3]
Angle B: 1/2 of angle A
angle C: 5 more than double angle A

angle A - 50 degrees
angle B - 25 degrees
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7 0
4 years ago
HELPPPPPPPP 7 POINTS
Shalnov [3]

The correct answer is 5. This is because rate of change of a function or a line is its gradient. As we can see that the line is horizontal then the gradient must be equal to zero too.

On the other hand the equation is written in the form of y = mx + c where m is the gradient or slope and c is the y intercept so the gradient is equal to 5 if we match the places. So it is 5 times greater.

7 0
3 years ago
Use the graph to find the slope (m) and y-intercept (b)
irga5000 [103]

Answer:

Slope=4 y-intercept=(0,-21) or -21

Step-by-step explanation:

To find<u> slope</u>

m=-13-(-17)/2-1

m=4/1

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To find <u>y-intercept</u>

y-(-17)=4(x-1)

y+17=4(x-1)

y+17=4x-4

Subtract both sides by 17

y=4x-21

y-intercept=-21

8 0
3 years ago
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