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Digiron [165]
3 years ago
14

Solve each equation for 0 degrees < x < 360 degrees.

Mathematics
2 answers:
grigory [225]3 years ago
4 0

Answer:

120 degrees and 330 degrees

Step-by-step explanation:

Solve each equation for 0 degrees < x < 360 degrees.

Sqrt 2 cos x + 1 = 0

A.45,315

B.115,245

C.135,225

D.46, 314

Please Help ASAP!

Given the expression √(2cosx+1) = 0

Square both sides of the equation;

√(2cosx+1) = 0

2cosx + 1 = 0

2cosx = -1

cos x = -1/2

x = cos^-1(-1/2)

x = -60 degrees

Since cos is negative in the 2nd and 3rd quadrant then;

x = 180-60 = 120 degrees (2nd quadrant)

x = 270+60 = 330 degrees (3rd quadrant)

UNO [17]3 years ago
4 0

Answer:It C

Step-by-step explanation:

3pi/4 = 135 , 5pi/4 += 225

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The amount she should invest today in the annuity is $455,450.40.

<h3>How much should be invested today?</h3>

The first step is to determine the future value of the monthly annuity.

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Annuity factor = {[(1+r)^n] - 1} / r

Where:

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Future value : 3250 x [(1.003^180) - 1] / 0.003 = 774,171.92

The second step is to determine the present value of this future annuity:

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8 0
2 years ago
7. Evaluate:<br> -8.24 + 3.7 =<br> Show work
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-8.24 + 3.7

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Darience says that he was able to jog 12 miles in 2 hours this weekend Sierra says his unit rate is 6 miles per hour Brandon say
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Read 2 more answers
Whoever helps with 3 and 4 gets brainliest answer and 10 points :)
MrMuchimi
Mean: The average or the center of the value. To find this, you add up all the numbers and divide by how many numbers there are. 
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3+4+5 = 12. 
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12/3 = 4. The mean is 4

Median: Median means the middle value. You place the numbers in order and locate the middle value. 

Example: 5, 4, 3 -> 3,/ 4,/ 5. Middle number 4.

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The mode would be 4.

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4 years ago
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