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aleksandr82 [10.1K]
3 years ago
9

2 sin2x + 3 cos x – 3 = 0

Mathematics
1 answer:
sashaice [31]3 years ago
7 0

Answer:

-1.214789091

Step-by-step explanation:

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6. Salary Raise. A Union negotiates for a cost-of-living raise of 3.4%. What is the raise for a union
Marizza181 [45]

Answer:

<h2>New salary= $43,800.24</h2>

Step-by-step explanation:

Step one:

Given data

the initial salary is = $42,360

the raise in percentage is =3.4%

To know the raise we need to calculate what the amount of 3.4% of $42,360 is

Step two:

=(3.4/100)*42,360

=0.034*42360

=1440.24

therefore thr raise is $1440.24

Step three:

the new salary is given as

new salary= old salary+ raise

New salary= $42,360+$1440.24

New salary= $43,800.24

4 0
3 years ago
A student worked out at a gym continuously for 50 minutes. The graph shows the remaining percentage of the workout as a linear f
Cloud [144]

Answer:

  • C. Domain:  All real numbers greater than or equal to 0 and less than or equal to 50. Range: All real numbers greater than or equal to 0 and less than or equal to 100

Step-by-step explanation:

  • <em>Refer to attached</em>

<u>Continuation of the question:</u>

Which answer choice best describes the domain and range of the function for this situation?

A

  • Domain: All real numbers greater than or equal to 0 and less than or equal to 100
  • Range: All real numbers greater than or equal to 0 and less than or equal to 50

B

  • Domain: (-2)
  • Range: (100)

C

  • Domain: All real numbers greater than or equal to 0 and less than or equal to 50
  • Range: All real numbers greater than or equal to 0 and less than or equal to 100

D

  • Domain: (100)
  • Range: (-2)

------------

As per the graph, the domain is x-values in the interval [0, 50] minutes and the range is y-values in the interval [0, 100] percentage.

<u>Correct answer choice is therefore:</u>

  • Option C

The rest are all incorrect

6 0
4 years ago
Which of the following statements are true about line segments?
Minchanka [31]

Which of the following statements are true about line segments  

Answer: that connect two endpoints

8 0
3 years ago
On a coordinate plane, triangle A B C is shown. Point A is at (0, 0), point B is at (3, 4), and point C is at (3, 2). What is th
Elena L [17]

Answer:

The area of triangle for the given coordinates is  1.5\sqrt{4.6}

Step-by-step explanation:

Given coordinates of triangles as

A = (0,0)

B = (3,4)

C = (3,2)

So, The measure of length AB = a = \sqrt{(x_2-x_1)^{2}+(y_2-y_1)^{2}}

Or, a = \sqrt{(3-0)^{2}+(4-0)^{2}}

Or, a =  \sqrt{9+16}

Or, a =   \sqrt{25}

∴ a = 5 unit

Similarly

The measure of length BC = b = \sqrt{(x_2-x_1)^{2}+(y_2-y_1)^{2}}

Or, b = \sqrt{(3-3)^{2}+(2-4)^{2}}

Or, a =  \sqrt{0+4}

Or, b =   \sqrt{4}

∴ b = 2 unit

And

So, The measure of length CA = c = \sqrt{(x_2-x_1)^{2}+(y_2-y_1)^{2}}

Or, c = \sqrt{(3-0)^{2}+(2-0)^{2}}

Or, c =  \sqrt{9+4}

Or, c =   \sqrt{13}

∴ c = \sqrt{13} unit

Now, area of Triangle written as , from Heron's formula

A = \sqrt{s\times (s-a)\times (s-b)\times (s-c)}

and s = \frac{a+b+c}{2}

I.e  s = \frac{5+2+\sqrt{13}}{2}

Or. s =  \frac{7+\sqrt{13}}{2}

So, A = \sqrt{(\frac{(7+\sqrt{13})}{2})\times ((\frac{(7+\sqrt{13})}{2})-5)\times (\frac{7+\sqrt{13}}{2}-2)\times (\frac{7+\sqrt{13}}{2}-\sqrt{13})}

Or, A = \sqrt{(\frac{(7+\sqrt{13})}{2})\times (\frac{(\sqrt{13}-3)}{2})\times (\frac{4+\sqrt{13}}{2})\times (\frac{7-\sqrt{13}}{2})}

Or, A = \frac{3}{2} × \sqrt{1+\sqrt{13} }

∴  Area of triangle = 1.5\sqrt{4.6}

Hence The area of triangle for the given coordinates is  1.5\sqrt{4.6}  Answer

7 0
3 years ago
Read 2 more answers
Given f(x) = 4x-6 and g(x) = f(2x) what is an equation for the function g?
slava [35]

Answer: g(x) = f(2x) = 4(2x)-6= 8x-6 => c

Step-by-step explanation:

6 0
3 years ago
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