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valkas [14]
3 years ago
6

I NEED HELP BADLY PLEASE

Mathematics
1 answer:
patriot [66]3 years ago
8 0

Answer:

m(DE) = 90°

Step-by-step explanation:

Since both circles are equal, therefore, their radius would be equal too.

m<S = 180 - right angle (angles on a straight line)

m<S = 180 - 90 = 90°

m<R = m<S (congruent triangles)

m<R = 90°

m<R = m(DE) (central angle = intercepted arc based on the central angle theorem)

Substitute

90° = m(DE)

m(DE) = 90°

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coldgirl [10]
<h3>▄▄▄▄▄▄▄▄▄▄▄▄▄▄</h3>

We know that, Two angles are said to be complementary, if the sum of their measures is 90°.

<u>According to the Question</u>,

⇒ ∠ABD + ∠DBC = 90°

⇒ (2x + 30)° + (3x + 20)° = 90°

⇒ 2x + 30° + 3x + 20° = 90°

⇒ 5x + 50° = 90°

⇒ 5x = 90° - 50°

⇒ 5x = 40°

⇒ x = 40°/5

⇒ x = 8

<u>So</u>, <u>t</u><u>he measure of each angle will be</u>,

⇒ ∠ABD = (2x + 30)°

= 2 × 8 + 30°

= 16 + 30°

= 46°

⇒ ∠DBC = (3x + 20)°

= 3 × 8 + 30°

= 24 + 30°

<h3> = 54° ▄▄▄▄▄▄▄▄▄▄▄▄▄▄</h3>
6 0
3 years ago
The base of a square pyramid has a side length of 7 inches the height of the pyramid is 19 inches what is the approximate volume
Kruka [31]

Answer:

B is the answer

Step-by-step explanation:

A^2 H/3

hope this helps : )

P.S. search find volume of square pyramid and google will have you put in the hight and side length then gives you the answer

5 0
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kvv77 [185]
The answer is C. $144
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Find x.<br> Geometry math question please help
insens350 [35]

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The ratio of short leg : long leg : hypotenuse = a : a√3 : 2a

Given long leg = 8√2

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The triangle on the left is 45 45 90 triangle

Ratio of leg : hypotenuse = a : a√2

The hypotenuse of triangle on the right is the leg of triangle on the left

so a = 16√6/ 3

Hypotenuse, x = (16√6/ 3) √2 = 16√12 / 3 = 32√3 / 3

Answer is B.

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Alex has $25 in his savings account. He needs $150 to buy a new bicycle. He plans to deposit $12.50 per week into the account un
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Answer:

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Step-by-step explanation:

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