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3 years ago

Evaluate the expression when a=9. 2a2

Mathematics

2 answers:

NemiM [27]3 years ago

8 0

36 because 9x2 is 18 and 18x2 is 36

guapka [62]3 years ago

5 0

Answer:

Step-by-step explanation:

Substitute the A for the 9, since A=9, and multiply the numbers

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If f(x) = g(x), then what does 7x - 12 = -3x + 10?

Bumek [7]

Answer:

x = 2.2

Step-by-step explanation:

Comment

f(x) = g(x) I don't think has any meaning for this question. I will just solve the equation.

Solution

7x - 12 = - 3x + 10 Add 3x to both sides

7x + 3x -12 = - 3x + 3x +10 Combine

10x - 12 = 10 Add 12 to both sides

10x -12 + 12 = 10 + 12 Combine

10x = 22 Divide by 10

10x/10 = 22/10

x = 2.2

3 0

1 year ago

Please solve it ASAP 50 points

TiliK225 [7]

Answer:

Step-by-step explanation:

4 0

3 years ago

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please help 50 points!!!! answer 1-5 please if you can show how you got the answer if you cant its ok at least show how you got

kvasek [131]

Answer:

Step-by-step explanation:

1. D

2. B

3. C

4. C

5. C

Thanks for letting me know.

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4 0

2 years ago

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Given cos theta = - 2/5 and sin theta < 0, find the six trigonometric values. I need help with this

Lena [83]

Answer:

$\sin\,\theta =-\frac{\sqrt{21} }{5}$

$\tan\,\theta =\frac{\sqrt{21} }{2}$

$\sec\,\theta = \frac{-5}{2}$

$cosec\,\theta =\frac{-5}{\sqrt{21} }$

$\cot\,\theta =\frac{2}{\sqrt{21} }$

Step-by-step explanation:

$\cos\theta =\frac{-2}{5}$

As both $sin\,\theta$ ,

$\theta$ lies in the third quadrant.

In the third quadrant,

$\sin\theta$

$\sin\,\theta =-\sqrt{1-\cos^2\,\theta} \\=-\sqrt{1-(\frac{-2}{5})^2 } \\\\=-\sqrt{1-\frac{4}{25} }\\\\=-\sqrt{\frac{25-4}{25} }\\\\=-\frac{\sqrt{21} }{5}$

$\tan\,\theta = \frac{\sin\,\theta}{\cos\,\theta }\\\\=\frac{\frac{-\sqrt{21} }{5} }{\frac{-2}{5} }\\\\=\frac{\sqrt{21} }{2}$

$\sec\,\theta =\frac{1}{\cos\,\theta }\\\\=\frac{1}{\frac{-2}{5} }\\\\=\frac{-5}{2}$

$\ cosec \,\theta = \frac{1}{sin\,\theta }\\\\=\frac{1}{\frac{-\sqrt{21} }{5} }\\\\=\frac{-5}{\sqrt{21} }$

$\cot\,\theta =\frac{1}{\tan\,\theta}\\\\=\frac{1}{\frac{\sqrt{21} }{2} }\\\\=\frac{2}{\sqrt{21} }$

3 0

3 years ago

The functions f(x) and g(x) are shown below:

Flura [38]

Answer:

(A) is your answer. The graph of g(x) will eventually exceed the graph of f(x)

Step-by-step explanation:

6 0

3 years ago

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