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3 years ago

If y= x+1/2-x , evaluate y given x= 5i .

Mathematics

1 answer:

ElenaW [278]3 years ago

5 0

9. 5i+1 /2-5i. Put 5i in place of x

If y=5i +1/2-5i
Then y=1/2

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Predict The cost of a school photo package includes $40 for the photo shoot, plus the

Alex_Xolod [135]

Answer:

1. Linear; 2. C = 2.50x + 40

Step-by-step explanation:

1. Prediction

Yes, it is a linear function, because each additional photo adds the same amount to the cost.

2. Equation

Let C = the cost of the photo package

and x = the number of photos

Then 2.50x = the cost of the photos

And $40 = cost of photo shoot

Then C = 2.50x + 40

The figure below shows that the graph of your equation is a straight line.

4 0

3 years ago

You read 1 chapter every hour. You read 3 hours after school. How many chapters did you read?

Marat540 [252]

Answer:

3 Chapters?

Step-by-step explanation:

3x1=3 but I am not sure if it is asking if you read during school or not because this seems like a really simple question and may be over thinking it.

6 0

3 years ago

Read 2 more answers

How many grams in a pound

lbvjy [14]

There are 453.5 grams in 1 pound

I hope that's help and have a great night !

5 0

3 years ago

Read 2 more answers

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,

$\sin\theta$

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