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lilavasa [31]
3 years ago
14

9) Which figure has 90° rotational symmetry?

Mathematics
1 answer:
IceJOKER [234]3 years ago
6 0
The answer is B. Thank you
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HELP!! What is the approximate measure of angle x in the triangle shown?
Alex Ar [27]
<h3>Answer:   D)  130.5 degrees</h3>

=================================================

Work Shown:

c^2 = a^2 + b^2 - 2*a*b*\cos(C)\\\\10^2 = 5^2 + 6^2 - 2*5*6*\cos(x)\\\\100 = 25 + 36 - 60*\cos(x)\\\\100 = 61 - 60*\cos(x)\\\\100 - 61 = - 60*\cos(x)\\\\39 = - 60*\cos(x)\\\\\cos(x) = \frac{39}{-60}\\\\\cos(x) = -0.65\\\\x = \arccos(-0.65)\\\\x \approx 130.5416\\\\x \approx 130.5\\\\

Note: I used the law of cosines. Make sure your calculator is in degree mode.

6 0
3 years ago
Juive the following equation.<br> X + 4(3x + 32) = 12
aleksandr82 [10.1K]

Answer:

try google algebra calculator

Step-by-step explanation:

6 0
3 years ago
A function is defined by X)= 1. What is f(-8)?
stich3 [128]

Answer:c

Step-by-step explanation:c

8 0
3 years ago
The product of 4, and a number increased by 8, is -48
german

Answer:

4n + 8 = -48

n = -14

Step-by-step explanation:

Using key words from the problem, you can set up an equation with the proper operations to solve for the variable.  Product = multiplication, so the 'product of 4 and a number' = 4n.  Increased = addition, so increased by 8 = 4n + 8.  The word 'is' means equal to, so:

4n + 8  = -48

In order to solve for 'n', you use inverse (opposite) operations and whatever you do to one side of the equation, you do to the other:

Subtract 8:  4n + 8 - 8 = -48 - 8 or 4n = -56

Divide 4:  4n/4 = -56/4

Solve for 'n':  n = -14

8 0
3 years ago
12 A) Find the nth term of sequency.<br> 1.<br> 7<br> 17<br> 31<br> 49.....
Sladkaya [172]

Answer:

32

Step-by-step explanation:

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