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Grace [21]
2 years ago
13

Triangle abc has the angle mesausres shown. Which statement is true about the angles?

Mathematics
1 answer:
Umnica [9.8K]2 years ago
8 0

Answer:

m∠A = 20°

Step-by-step explanation:

Given that the sum of the angles of any triangle is 180°, adding the expressions of each angle and setting them equal to 180° will give the value of 'x' and allow you to evaluate the angles.  

2x + 5x + 11x = 180

18x = 180

18x/18 = 180/18 or x = 10

m∠A = 2x or 2(10) = 20°

m∠B = 5x or 5(10) = 50°

m∠C = 11x or 11(10) = 110°

Out of the choices given, the only one that is true is that m∠A = 20°.

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10 points per answer!
Mkey [24]

Answer:

d

Step-by-step explanation:

4 0
2 years ago
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What’s 17 * 17 * 17 , What’s 4 * 4 * 4 * 4 * 4 ?
vichka [17]

Answer:

17*17*17= 4913

4 * 4 * 4 * 4 * 4 = 1024.

Hope this helps.

3 0
3 years ago
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Calculate the surface area of a hockey puck with a height of 1 in. and a diameter of 3 in
uysha [10]

Answer:

23.56

Step-by-step explanation:

2(\pi r^{2}) + 2\pirh

2(\pi 1.5^{2})+ 2\pi(1.5)(1)

23.56

6 0
3 years ago
A marble is randomly selected from a bag. The probability of selecting a marble with dots on it is 0.2. The probability of selec
marin [14]

Answer:

0.5

Step-by-step explanation:

Let D be the event of selecting a marble with dots.

Let P be the event of selecting a purple marble.

The probability of selecting a marble with dots, P(D)=0.2

The probability of selecting a marble that is both purple and has dots, P(D \cap P)=0.1

We want to determine the probability of selecting a purple marble given that the marble has dots on it, P(P|D)

By the definition of conditional probability:

P(P|D)= \dfrac{P(P \cap D)}{P(D)} \\= \dfrac{0.1}{0.2}\\ =0.5

The probability of selecting a purple marble given that the marble has dots on it is 0.5.

4 0
3 years ago
(10
Anni [7]

Given:

The matrix multiplication

\begin{bmatrix}4&5&6\\1&2&3\end{bmatrix}\begin{bmatrix}10\\20\\30\end{bmatrix}

To find:

The order of resulting matrix.

Solution:

We know that, if order of first matrix is m_1\times n_1 and the order of second matrix is m_2\times n_2, then the order of these two matrices is m_1\times n_2.

We have,

\begin{bmatrix}4&5&6\\1&2&3\end{bmatrix}\begin{bmatrix}10\\20\\30\end{bmatrix}

Here, the order of first matrix is 2\times 3 and the order of the second matrix is 3\times 1. So, the order of the second matrix is 2\times 1. It is also written are 2 by 1.

Therefore, the correct option is A.

6 0
3 years ago
Read 2 more answers
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