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Pie
3 years ago
12

If sinxcos(pi/7)-sin(pi/7)cosx=-sqrt2/2 then x can equal?

Mathematics
2 answers:
Rom4ik [11]3 years ago
8 0
I'm going for a range of 0 < x <2<span>π

This is R sin (x-a), although R is 1.

a = </span><span>π/7, so 

=> sin (x-(</span><span>π/7)) = -1/(sqrt(2))
=> x = 53</span>π/28, 39<span>π/28</span>
Arlecino [84]3 years ago
4 0

Answer:

its's 5pi/4 +pi/7 and 3pi/4+pi/7

Step-by-step explanation:

Just took the quiz on A P E X

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Drag the tiles to the correct boxes to complete the pairs. Match each system of inequalities to the graph representing its solut
mojhsa [17]

The solutions to the systems of inequalities are (0.3, 1.3), (-1, -2), (0.4, 1.8) and (3.6, 0.8)

<h3>How to determine the solution to the systems?</h3>

The graph of the systems of inequalities is not given.

So, I would plot a new graph to answer this question.

The systems of inequalities are given as:

y − x > 1 and 2x + y ≤ 2

x + y ≥ -3 and 5x – y ≤ -3

2x – y ≤ -1 and x + 2y < 4

4x – 3y < 12 and x + 3y ≥ 6

Next, we plot these inequalities on a graph and write out the points of intersection.

From the attached graph, we have:

y − x > 1 and 2x + y ≤ 2  ⇒ (0.3, 1.3)

x + y ≥ -3 and 5x – y ≤ -3  ⇒ (-1, -2)

2x – y ≤ -1 and x + 2y < 4  ⇒ (0.4, 1.8)

4x – 3y < 12 and x + 3y ≥ 6 ⇒ (3.6, 0.8)

Hence, the solutions to the systems of inequalities are (0.3, 1.3), (-1, -2), (0.4, 1.8) and (3.6, 0.8)

Read more about systems of equations at:

brainly.com/question/21405634

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8 0
2 years ago
Help!! This is timed if you can get me the answers I will give you 50 points and the brainest please I need so much help!!
Shalnov [3]

Answer:

1) 1.5 ft²

2) 2400 ft²

3) Both 96 ft²

Step-by-step explanation:

1) 6 in = 0.5 ft so we have 3 ft * 0.5 ft = 1.5 ft²

2) 80 yd = 240 ft so we have 10 ft * 240 ft = 2400 ft²

3) there is 6 squares of 4 ft * 4 ft, so that's 6 * 4 ft * 4 ft = 96 ft². Area of net and surface area describe same thing.

3 0
3 years ago
What is 469.890 rounded to the nearest tenth??
ASHA 777 [7]

Answer:

470

Step-by-step explanation:

every thing that is above 5 you go up one tenth.

Anything lower than five you keep the same tenth.

3 0
3 years ago
The quantity of 6 less than a number multiplied by 8
Bas_tet [7]

6x-6=8x

subtract 6x from both sides

-6=2x

divide both sides by 2

x= -3

5 0
3 years ago
Halla el eje de simetría y el vértice de la parábola de cada función cuadrática. Luego grafica la función cuadrática
oksano4ka [1.4K]
(0,3) is the correct answer to your question
5 0
3 years ago
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