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Fed [463]
1 year ago
5

Find the length of side x in simplest radical form with a rational denominator.60°130°X

Mathematics
1 answer:
iren [92.7K]1 year ago
5 0

We will solve using the law of sines as follows:

\frac{1}{\sin(30)}=\frac{X}{\sin (60)}

Now, we solve for X:

\Rightarrow X=\frac{\sin(60)}{\sin(30)}\Rightarrow X=\sqrt[]{3}

So, the length of X is sqrt(3).

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Add brackets to make this statement correct.. 12 - 2 x 3 + 1 = 4
Talja [164]

Answer:

12 - (2 \times 3) + 1 = 4

3 0
3 years ago
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I’ll mark brainliest
enyata [817]

Answer:

\text{A. }y=1.30x+1.50

Step-by-step explanation:

The two ringtones will cost her a total of 0.75\cdot 2=1.50 and is a fixed amount. The relationship between the cost and number of songs only is y=1.30x and therefore the answer is \boxed{\text{A. }y=1.30x+1.50}. You can also directly find the answer by finding the y-intercept (in this case 1.50), as no other answer choices include the term 1.50, so A must be the correct answer.

6 0
3 years ago
Find the length of MN.​
Debora [2.8K]

Answer:

32

Step-by-step explanation:

39 = 4(x + 5) + 2x + 1

39 = 4x + 20 + 2x + 1

39 = 6x + 21

18 = 6x

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MN = 4(x + 5)

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MN = 4(8)

MN = 32

hope this helped!

8 0
3 years ago
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HELP PLEASE! Robert needs to cut four shelves from a board that is 2.5 meters long. The second shelf is 18 centimeters longer th
IRISSAK [1]
Let us assume the length of the first shelf = x
Then
The length of the second shelf = 2x + 18
Length of the third shelf = x -12
Length of the fourth shelf = x + 4
The total length of the board = 2.5 meters.
                                              = ( 2.5 * 100) cm
                                               = 250 cm
Then we can write the equation as
x + 2x + 18 + x - 12 + x + 4 = 250
5x + 10 = 250
After dividing both sides of the equation by 5 we get
x + 2 = 50
x = 50 - 2
   = 48
Then
The length of the second shelf = 2x + 18
                                                 = 2(48) + 18
                                                 = 96 + 18
                                                 = 116
So the length of the second shelf is 116 cm.
5 0
3 years ago
What is the cosine of 135 degrees?
belka [17]
cos135^o=cos(90^o+45^o)=-sin45^o=-\frac{\sqrt2}{2}\\\\reduction\ formulas:\ cos(90^o+\alpha)=-sin\alpha
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3 years ago
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