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oksano4ka [1.4K]
3 years ago
9

Please help I'm so dumb ​

Mathematics
1 answer:
lara31 [8.8K]3 years ago
5 0

Answer:

D

Step-by-step explanation:

I am not 100 percent sure.

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Solve the equation if 0° &lt; x &lt; 360° cos x = - 1/2<br>​
babunello [35]

Answer:

120° and 240°

Step-by-step explanation:

The given info about the angle x is  cos x = - 1/2.

By definition, cos x = - 1/2 = (adjacent side) / hypotenuse, so here we can assume the adjacent side is -1 and the hypotenuse is 2.

A negative cosine tells us that the angle is in Quadrant II or Quadrant III.

If x is in Quadrant II, then its value is 120°

If x is in Quadrant III, then its value is  120° + 120°, or 240°

Check:  

3 0
3 years ago
3 questions 30 points
pantera1 [17]
The inequality that represents the sentence is:
8-x>_20
5 0
3 years ago
Read 2 more answers
Due today! 20 points!
tia_tia [17]

Answer:

Consider the finite arithmetic sequence,

Use the explicit formula for an arithmetic sequence,

...... (83.84.94.92.91.100

First term of the sequence is

3 0
3 years ago
Read 2 more answers
3 − m = −2 (m + 6); m = −15 Yes or No
Nimfa-mama [501]

Answer:

3 − m = −2 (m + 6); m = −15    Yes

5 (p + 3) = −35; p = −4            No

8q = 3 (10 + q); q = 6             Yes


Step-by-step explanation:

3 − m = −2 (m + 6)

3 - m = -2m - 12

m = -15

Answer is Yes


5 (p + 3) = −35

5p + 15 = -35

5p = - 50

p = -10

Answer is  No


8q = 3 (10 + q)

8q = 30 + 3q

5q = 30

q = 6

Answer is  Yes

5 0
3 years ago
Given 1 in = 2.54 cm and 1 cm = 10 mm, how many millimeters are present in 20.0 inches?​
Artemon [7]

Answer: 508mm

Step-by-step explanation:

20 x 2.54 = 50.8

50.8 x 10 = 508

7 0
3 years ago
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