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IgorC [24]
2 years ago
13

-2x - 14 = -2 Solve for x.

Mathematics
2 answers:
OLEGan [10]2 years ago
7 0
X= -6

-2x-14=-2
Add 14 to both sides
-2x=12
Divide by -2 to get X by itself
X= -6
hammer [34]2 years ago
3 0

Answer:

X=-6

Step-by-step explanation:

Add 14 on both sides

-2x=12

divide by -2

x=-6

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docker41 [41]

Answer:

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Step-by-step explanation:

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2 years ago
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Anyone know how to do trig? Given tan Ф = 4/5, find all other trig functions.
mars1129 [50]

9514 1404 393

Answer:

  • sin(Ф) = (4/41)√41; csc(Ф) = (√41)/4
  • cos(Ф) = (5/41)√41; sec(Ф) = (√41)/5
  • tan(Ф) = 4/5; cot(Ф) = 5/4

Step-by-step explanation:

The mnemonic SOH CAH TOA can help you with three of the functions. Then you need to remember the relations between those and the other three.

  Tan = Opposite/Adjacent

  tan(Ф) = 4/5

This suggests you can draw a triangle like the one attached that has adjacent side 5 and opposite side 4. Then hypotenuse can be found from the Pythagorean theorem:

  AC² = AB² +BC² = 5² +4² = 41

  AC = √41 . . . . . hypotenuse

Then the other trig functions are ...

  Sin = Opposite/Hypotenuse

  sin(Ф) = 4/√41 = (4/41)√41

  Cos = Adjacent/Hypotenuse

  cos(Ф) = 5/√41 = (5/41)√41

And the reciprocal functions are ...

  csc(Ф) = 1/sin(Ф) = (√41)/4

  sec(Ф) = 1/cos(Ф) = (√41)/5

  cot(Ф) = 1/tan(Ф) = 5/4

7 0
3 years ago
6a2 + 8a - 25 = -3<br> Using the Quadratic Formula
drek231 [11]

Answer:

6

2

+

8

−

2

5

=

−

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6a^{2}+8a-25=-3

6

2

+

8

−

2

5

−

(

−

3

)

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Step-by-step explanation:

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4 0
2 years ago
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lisov135 [29]

Answer:

x = 10

Step-by-step explanation:

Given:

Arc LM = 13x - 10

Arc MN = 7x - 10

Required:

Solve for x

Solution:

Recall: half a circle = 180°

Therefore,

Arc LM + Arc MN = 180°

13x - 10 + 7x - 10 = 180

Add like terms

20x - 20 = 180

20x - 20 + 20 = 180 + 20

20x = 200

20x/20 = 200/20

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lapo4ka [179]

Answer:

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