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murzikaleks [220]
3 years ago
13

The equation below represents Function A and the graph represents Function B:

Mathematics
2 answers:
I am Lyosha [343]3 years ago
7 0

Answer:

<h2>Slope of Function B  = -Slope of Function A</h2>

Step-by-step explanation:

To find the right answer we need to calcultate the slope of each function.

Function A is  f(x)=-2x+1

From its expression we can deduct that its slope is m_{A} =-2 because the function is expressed in slope-intercept form where the coefficient of the <em>x </em>is the slope.

Now, function B is defined with a graph line, that intercepts points (-1,-5), (2,1) and (3,3). Using this points we can find its slope using the formula

m=\frac{y_{2}-y_{1} }{x_{2}-x_{1} } \\m_{B} =\frac{3-(-5)}{3-(-1)} =\frac{3+5}{3+1}=\frac{8}{4}=2

So, function A has a slope of -2 and function B has a slope of 2.

Therefore, the last choice compares both slopes, because they are just opposite,

m_{B}=-m_{A}

So, the answer is

<em>Slope of Function B = -Slope of Function A</em>

Snezhnost [94]3 years ago
6 0

Answer:

Slope of Function B = – Slope of Function A

Step-by-step explanation:

Slope of function A=-2

Slope of function B=$\frac{3-1}{3-2}=2$

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The clearance between a pin and the collar around it is important for the proper performance of a disc drive for small computers
hichkok12 [17]

Answer:

(a) The distribution of (Y - X) is <em>N</em> (0.001, 0.0005).

(b) The probability that the pin will not fit inside the collar is 0.023.

Step-by-step explanation:

The random variable <em>X</em> is defined as the diameter of the pin and the random variable <em>Y</em> is defined as the diameter of the collar.

The distribution of <em>X</em> and <em>Y</em> is:

X\sim N(0.525, 0.0003)\\Y\sim N(0.526, 0.0004)

The random variables <em>X</em> and <em>Y</em> are independent of each other.

(a)

Compute the expected value of (Y - X) as follows:

E(Y-X)=E(Y)-E(X)=0.526-0.525=0.001

The mean of (Y - X) is 0.001.

Compute the variance of (Y - X) as follows:

V(Y-X)=V(Y)+V(X)-2Cov(X,Y)\\=V(Y)+V(X);\ X\ and\ Y\ are\ independent\\=0.0003^{2}+0.0004^{2}\\=0.00000025

SD(Y-X)=\sqrt{0.00000025}=0.0005

The standard deviation of (Y - X) is 0.0005.

Thus, the distribution of (Y - X) is <em>N</em> (0.001, 0.0005).

(b)

Compute the probability of [(Y - X) ≤ 0] as follows:

P(Y-X\leq 0)=P(\frac{(Y-X)-\mu_{Y-X}}{\sigma_{Y-X}}\leq \frac{0-0.001}{0.0005})=P(Z

*Use a <em>z</em>-table for the probability value.

Thus, the probability that the pin will not fit inside the collar is 0.023.

8 0
3 years ago
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