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kicyunya [14]
4 years ago
14

The vector matrix -3,-5 is rotated at different angles

Mathematics
1 answer:
Law Incorporation [45]4 years ago
4 0

Answers:

First box: 3Pi/4

Second box: 4Pi/3

Third box: Pi/2

Fourth box: 3Pi/2

Please, see the attached files.

Thanks.

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At a costumer service call center for a large company, the number of calls received per hour is normally distributed with a mean
Marysya12 [62]

We have been given that at a customer service call center for a large company, the number of calls received per hour is normally distributed with a mean of 150 calls and a standard deviation of 5 calls. We are asked to find the probability that during a given hour of the day there will be between 146 calls and 163 calls.

First of all, we will use z-score formula to find z-score corresponding to 146 and 163.

z=\frac{x-\mu}{\sigma}

z=\frac{146-150}{5}

z=\frac{-4}{5}

z=-0.8

z=\frac{163-150}{5}

z=\frac{13}{5}

z=2.6

Our next step is to find percentage of data scores falls between both z-scores.

P(-0.8

Using normal distribution table, we will get:

P(-0.8

P(-0.8

Let us convert our answer into percentage.

0.78348\times 100\%=78.348\%

Upon rounding our answer to nearest thousandths, we will get:

78.348\%\approx 78.35\%

Therefore, the probability that during a given hour of the day there will be between 146 calls and 163 calls is approximately 78.35\%.

8 0
3 years ago
Please help me out I really can’t afford failing this test
Blizzard [7]

Answer:

I'm not really sure but I think it's 2

Step-by-step explanation:

So here's what I did;

x³+3x-9=x - 1 +2x

x³+3x - x -2x = 9 - 1

x³= 8

x = ³√8

x = 2

I hope this helps

7 0
3 years ago
Given the function: j(x)=x^2+3x-4 ... Match the description with the critical point.
Assoli18 [71]

Answer:

1

Step-by-step explanation:

3 0
3 years ago
((3²)³)² write in simplist form​
Leya [2.2K]

Answer:

531441

Step-by-step explanation:

6 0
4 years ago
Evaluate the expression 3x^2+ y if x = 1 and<br> y = -3.
elena-14-01-66 [18.8K]
3(1)^2-3= 0
Plug in the numbers because x=1 plug In 3(1)^2 and it equals 3 then subtract y which is 3-3= 0
4 0
3 years ago
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