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matrenka [14]
3 years ago
11

Need helppppp asapppp

Mathematics
2 answers:
11111nata11111 [884]3 years ago
7 0

Answer:

25

Step-by-step explanation:

The angle of an arc is the same as the central angle. MarcCD is the same as the central angle COD which is given as 130o.

That means there are 50 degrees left for COA and DOA and because the chord and the diameter are equal, COA = DOA

That means that COA is 1/2 what is left over from 180 when 130 is subtracted from it.

1/2 * 50 = 25

The answer is A 25.

Ymorist [56]3 years ago
4 0

The answer is C. 65........

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24x10=?? (Please explain in zero the hero or in 4 square..)
Tamiku [17]
240, you just add a zero to 24, I don't know what you mean by zero the hero of 4 square, hope this helps!
6 0
3 years ago
Read 2 more answers
Help help help help help
liubo4ka [24]

Answer:

m(∠y) = 64°

Step-by-step explanation:

From the figure attached,

m(∠e) = 90°

m(∠b) + 67° = 180° [Linear pair of angles]

m(∠b) = 180 - 67

          = 113°

m(∠c) + 75° = 180°  [Linear pair of angles]

m(∠c) = 105°

m(∠a) = m(∠d)

By the property of a polygon,

Sum of the interior angles of a polygon is given by,

Sum of interior angles = (n - 2) × 180°

Here, n = number of sides of the polygon

For n = 5,

Sum of interior angles = (5 - 2)×180°

                                     = 540°

m(∠a) + m(∠b) + m(∠c) + m(∠d) + m(e) = 540°

2m(∠d) + 113° + 105° + 90° = 540°

2m(∠d) + 308 = 540°

2m(∠d) = 540 - 308

m(∠d) = 116°

m(∠d) + m(∠y) = 180°

m(∠y) + 116° = 180° [Linear pair of angles]

m(∠y) = 64°

8 0
2 years ago
1. If quadrilateral ABCD is rotated 270° clockwise about the origin, find the coordinates of B'.
Zielflug [23.3K]

Answer:

The coordinates of B' are (-3, 5).  

Step-by-step explanation:

For every 90 degrees rotated, the coordinate numbers switch and one is multiplied by -1, when clockwise it's the 2nd one, and when counterclockwise, it's the 1st.

4 0
3 years ago
How to turn 12/25 in precent
Len [333]

Answer:

48%

Step-by-step explanation:

To convert any fraction to a percentage, we need to multiply it by 100.

\frac{12}{25}*100

= \frac{}{} 12*4

= 48%

7 0
3 years ago
Given: f(x) = 3x2 + 2x – 1
denis-greek [22]

Answer:

84

Step-by-step explanation:

f(x) = 3x^2 + 2x – 1

Let x=5

f(5) = 3(5)^2+2(5) -1

     = 3*25 +10-1

    = 75+10 -1

    = 85 -1

4 0
3 years ago
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