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Reil [10]
3 years ago
10

17. Define p~q by the equation p~q=p?q?– 3q. Then 2~3 =

Mathematics
1 answer:
omeli [17]3 years ago
6 0
E IS THE AWNSERRRRRRRRRR
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Find the exact value of tan( cos^-1 ( -5/13))
trasher [3.6K]

Answer:

-¹²/₅  

Step-by-step explanation:

Let cos a = -⁵/₁₃

Then tan a = sin a/cos a

= [√(1 - cos²a)]/cos a

= {√[1 - (-⁵/₁₃)²]}/(-⁵/₁₃)

= -[√(1 - ²⁵/₁₆₉)] × ¹³/₅

= -[(√(¹⁴⁴/₁₆₉ )] × ¹³/₅

= -¹²/₁₃ × ¹³/₅

= -¹²/₅

tan(arccos (-⁵/₁₃)) = -¹²/₅

The diagram shows the 2nd  quadrant of a circle with radius 13, cos a = -⁵/₁₃, and tan a = ¹²/₍₋₅₎ = -¹²/₅.

4 0
3 years ago
Find the value of x<br> in the figure below
AlexFokin [52]

Answer:

x = 29

Step-by-step explanation:

I think this because they give you 78 degrees. The angle across from it (3x - 9) must equal 78 degrees as well. So solve as (3x - 9) = 78. 78 + 9 is 87. 87 divided by 3 is 29.

Hope it helps and is correct!

6 0
2 years ago
evaluate if a = 3 b =4 and C=12 cuz there's more to the question there's more to the question will Mark brainiest if you can ans
tia_tia [17]
2(3)^2+(4)^3-12
2(9)+ 64-12
18+52
70
6 0
3 years ago
Read 2 more answers
Another for solving for x but much harder
gulaghasi [49]
Set up the equation so m<HCB + m<DCH = m<DCB

2x + 100 + 60 = x + 170
2x+ 160 = x +170
-x             -x
x + 160 = 170
   - 160     -160
x = 10
4 0
2 years ago
PLEASE HELP!<br><br> x ≤ -y<br> 2x - y &lt; 4
marshall27 [118]

2x - 4 < y. graph it. y > 2x - 4. boom answer

8 0
2 years ago
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