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Diano4ka-milaya [45]
4 years ago
8

Please help!!! What is the value of X?

Mathematics
1 answer:
choli [55]4 years ago
5 0
I think it is 37 I m not sure sorry if it s wrong. dont trust me!
please...
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Find the slope of a line perpendicular to <br><br> Y= -x -1
ad-work [718]
<h2>Greetings!</h2>

Answer:

The slope is 1.

Step-by-step explanation:

First, we must find the slope of the current equation.

This is the number in front of the x.

Seeing as this is -x, or -1x, the slope of this line is -1

When finding the slope of a line perpendicular, you need to find the \frac{-1}{slope}

So, in this case it is:

\frac{-1}{-1}

The minuses cancel out, leaving with 1 over 1 or 1/

So the slope of the line perpendicular is 1!


<h2>Hope this helps!</h2>
8 0
4 years ago
A research scientist wants to know how many times per hour a certain strand of bacteria reproduces. The mean is found to be 9.8
svetlana [45]

Answer:

The 99% confidence interval for the true mean number of reproductions per hour for the bacteria is between 9.6 and 10.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.99}{2} = 0.005

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.005 = 0.995, so z = 2.575

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 2.575\frac{2.4}{\sqrt{955}} = 0.2

The lower end of the interval is the sample mean subtracted by M. So it is 9.8 - 0.2 = 9.6 reproductions per hour.

The upper end of the interval is the sample mean added to M. So it is 9.8 + 0.2 = 10 reproductions per hour.

The 99% confidence interval for the true mean number of reproductions per hour for the bacteria is between 9.6 and 10.

8 0
3 years ago
Help on this ik it’s easy but I gotta do other hw rn
ddd [48]

Answer:

2: addition

3: subtraction

4: division

5: subtraction

6: division (I think)

7: addition

8: subtraction

9: multiplication

10: addition

12: n/10

13: n+6

14: 9x(n-5)

15: 4n-1

16: 50+40h

Step-by-step explanation:

you said its easy so i assume you know how to do it

6 0
3 years ago
Read 2 more answers
What is the solution of the following system?
Doss [256]
First divide the 2nd equation by -3
3x+3y=10
same as other
they are the same line
so the solution is where they intersect
they are the same line
the intersection points are the points on the line


the solution is 3x+3y=10, that's all the points that satisfy the system
8 0
3 years ago
The vertices of a rectangle are given in the columns of the matrix R=[0 0 3 3 0 3 3 0]. If [-1 0 0 1]x R is found to perform a t
krok68 [10]

Answer:

  (0,0), (0, 3), (-3, 3), (-3,0)

Step-by-step explanation:

The matrix multiplication is shown in the attachment. The transformed coordinates are ...

  (0,0), (0, 3), (-3, 3), (-3,0)

_____

You can count the instances of -3 in the result matrix to choose the correct answer.

7 0
3 years ago
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