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Bas_tet [7]
3 years ago
15

If you could only plot 5 points to graph y=sinx, which points would you choose? How would you connect these points? Please expla

in
If you could only plot 5 points to graph y = cosx, which points would you choose? How would you connect these points? Please explain this too!
Mathematics
1 answer:
fenix001 [56]3 years ago
8 0

Answer:

For both graph I would choose the following points: 0°, 90°, 180°, 270° and 360°. I would connect the points (in both cases) with an smooth arc.

Step-by-step explanation:

x          sin(x)     cos(x)

0°        0            1

90°      1             0

180°     0           -1

270°    -1            0

360°    0            1

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A band sells T-shirts at their concerts. After one concert, they sold 320 out of 400 black T-shirts and 270 out of 300 blue T-sh
Paha777 [63]
Percentage of black T-shirt sold = 320/400 x 100 = 80%

Percentage of blue T-shirt sold = 270/300 x 100 = 90%

Answer: There is a greater percentage of Blue T-Shirt sold.
7 0
3 years ago
The time taken to prepare the envelopes to mail a weekly report to all executives in a company has a normal distribution, with a
telo118 [61]

Answer:

Mailing preparation takes 38.29 min max time to prepare the mails.

Step-by-step explanation:

Given:

Mean:35 min

standard deviation:2 min

and 95%  confidence interval.

To Find:

In normal distribution mailing preparation time  taken less than.

i.eP(t<x)=?

Solution:

Here t -time and x -required time

mean time 35 min

5 % will not have true mean value . with 95 % confidence.

Question is asked as ,preparation takes less than  time means what is max time that preparation will take to prepare mails.

No mail take more time than that time .

by Z-score or by confidence interval is

Z=(X-mean)/standard deviation.

Z=1.96 at  95 % confidence interval.

1.96=(X-35)/2

3.92=(x-35)

X=38.29 min

or

Confidence interval =35±Z*standard deviation

=35±1.96*2

=35±3.92

=38.29 or 31.71 min

But we require the max time i.e 38.29 min

And by observation we can also conclude the max time from options as 38.29 min.

4 0
3 years ago
Are KP and PK the same ray? Are NM and MN the same ray? Explain your answer.
Kazeer [188]

KP and PK cannot be the same ray and also NM and MN cannot be the same ray.

Explanation:

  • A Ray is said to be a single straight unidirectional infinity line. We can determine the starting point of a ray whereas we can't plot the endpoint of the ray.
  • So PK and KP cannot be the same ray and there can't be the existence of such ray with the two points.
  • In the same way, NM and MN can't be described as a ray because it doesn't satisfy the requirement of the ray.
  • Hence the above coordinates cant be the same ray.

8 0
3 years ago
Help please on this problem
iVinArrow [24]

Answer:

7.5 hours

Step-by-step explanation:

We can model an equation for this problem.

We can write:

F=mt

Where

F is the final temperature (15 degrees we need)

m is the rate of temperature change (2 degrees per hour)

and

t is the time, in hours, it will take (we need to find this)

It is given,

F = 15

m = 2

So, t would be:

F = mt

15 = 2t

t = 15/2 = 7.5

So it will take 7.5 hours

8 0
3 years ago
Does this table represent a proportional relationship?<br><br> Yes<br> No
Contact [7]

no

the table does not represent a proportional relationship.

4 0
3 years ago
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