Please help What does X=??

Mathematics

1 answer:

Lilit [14]3 years ago

6 0

Answer:

Step-by-step explanation:

the 2 triangles are same so the angles would be also same. 180-86-53= 41

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How do you write 290 as a decimal

mixas84 [53]

Hello there!

This question super easy to me.

<em>290%= 2.9 that came from in decimal form.</em>

First you had to write 290 as a decimal you can have to divide numerator by the denominator of the fraction. It should 290 as a decimal it equal to 290. 2.9 is the correct answer. Hope this helps! Thank you for posting your question at here on Brainly. -Charlie

6 0

3 years ago

Help! I'm a little stumped when it comes to variables in matrices. An explanation would be super rad!

iris [78.8K]

Answer:

Step-by-step explanation:

To find the determinant of a 3x3 matrix, you can use this method. (See picture.)

Start with the first number in the top row, and block off the row and column. A 2x2 matrix will be left. Find the determinant of this 2x2 matrix, and multiply it by the number in the top row.

Repeat for the other two numbers in the top row. Add the first result, subtract the second, and add the third.

det A = -2 [(3)(-5) − (a)(0)] − 2 [(0)(-5) − (a)(0)] + b [(0)(0) − (3)(0)]

det A = -2 (3)(-5) − 0 + 0

det A = 30