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In-s [12.5K]
3 years ago
12

Which expression is equivalent to -3(2m-1) -n? 6m-n-3 6m-n+3 -6m-n-3 -6m-n+3

Mathematics
1 answer:
kirill115 [55]3 years ago
5 0

ghjjkkiihccukckugcugcliyfyi

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the equation Y -7 / 2 equals 1/2 x -4 is written in point slope form what is the Y intercept of the equation ​
kari74 [83]
Ask your teacher not us. thanks management. :)
5 0
3 years ago
A bicycle company is designing women's bicycle frames. The frames can accommodate any woman taller than 54.5 inches. Given that
ladessa [460]

Using the normal distribution, it is found that 0.13% of American women CAN NOT use the bicycles designed by this company.

<h3>What is Normal Probability Distribution?</h3>

The z-score of a measure X of a normally distributed variable with mean  and standard deviation  is given by:

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

  • The z-score measures how many standard deviations the measure is above or below the mean.
  • Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

The mean and the standard deviation are given, respectively, by:

\mu = 65\ \ \sigma= 3.5

The proportion of women that cannot use the bikes(smaller than 54.5 inches) is the p-value of Z when X = 54.5, hence:

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

z = \dfrac{54.5-65}{3.5}

Z = -3

Z = -3 has a p-value of 0.0013.

0.0013 = 0.13% of American women CAN NOT use the bicycles designed by this company.

More can be learned about the normal distribution at brainly.com/question/27850813

#SPJ1

4 0
2 years ago
If f(x) is discontinuous, determine the reason.
inn [45]
The function is 

f(x) = \begin{cases} x^2-4 &\mbox{if } x\ \textless \ 1, \\ &#10;x+4 & \mbox{if } x\ \textgreater \ 1. \end{cases}.

To the left of 1 the function is a quadratic polynomial, to the right, it is a linear polynomial. Polynomial functions are always continuous, so the only candidate point for discontinuity is x=1.

The left limit is calculated with 1 substituted in x^2+4, which gives 5.

The right limit, is computed using the rule for the right part of 1, that is x+4. 

Thus, the right limit is 1+4=5.

So, both left and right limits are equal. Now if f(1) is 5, then the function is continuous at 1.

But the function is not defined for x=1, that is x=1 is not in the domain of the function. Thus, we have a "whole" (a discontinuity) in the graph of the function.

The reason is now clear:

Answer:<span> f(1) is not defined</span>

5 0
4 years ago
Consider the surface f (x comma y comma z )f(x,y,z)equals=negative 2 x squared plus 2 y squared minus 3 z squared plus 3 equals
trapecia [35]

Answer:

a) (8,8,-6)

b) 4x+4y+3z = -3

Step-by-step explanation:

a)

The surface is given by the equation  

f(x,y,z) = 0 where

f(x,y,z)=-2x^2+2y^2-3z^2+3

The gradient of this function is the vector

(\frac{\partial f}{\partial x},\frac{\partial f}{\partial y},\frac{\partial f}{\partial z})=(-4x,4y,-6z)

If we evaluate it in the point P = (-2,2,1) we obtain the point

(8,8,-6)

b)

The vectors with their tails at P are of the form  

(-2,2,1)-(x,y,z) = (-2-x, 2-y, 1-z)

as they must be orthogonal to the gradient, they must be orthogonal to the vector (8,8,6) so their inner product is 0

(-2-x,2-y,1-z)\cdot(8,8,6)=0\Rightarrow -16-8x+16-8y+6-6z=0\Rightarrow 4x+4y+3z=-3

and the equation of the desired plane is

4x+4y+3z = -3

3 0
4 years ago
Solve.<br> Х<br> -<br> - 5<br> - 8<br> The solution is x=
amm1812
It should be 20 I did it on my test
3 0
3 years ago
Read 2 more answers
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