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Kisachek [45]
2 years ago
14

lice walks along a road which can be modeled by the equation y=4x, where (0,0) represents her starting point. When she reaches a

certain point A, she turns right, so that she is traveling perpendicular to the original road, until she stops at the point (85,0). What was the point A where Alice turned?
Mathematics
1 answer:
olya-2409 [2.1K]2 years ago
6 0

Answer:

(5,20)

Step-by-step explanation:

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The time at which the mailman delivers the mail to ace bike shop follows a normal distribution with mean 2:00 pm and standard de
ivolga24 [154]

There are three questions related to this problem.


First, the probability of the mail will arrive after 2:30 PM


<span>Find the z-score of 2:30 which is 30 minutes after 2:00.</span>

<span>
z(2:30) = (2:30 – 2:00)/15 = -30/15 = -2</span>

<span>
P(x < 2:30) = P(z<-2) = 0.0228</span>

<span>
</span>

Second, the probability of the mail will arrive at 1:36 PM

<span>Find the z-score of 1:36 which is 24 minutes before 2:00.</span>

<span>
z(1:36) = (1:36 – 2:00)/15 = -24/15 = -1.6</span>

<span>
P(x < 1:36) = P(z<-1.6) = 0.0548</span>

 

Lastly, the probability of the mail will arrive between 1:48 PM and 2:09 PM


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<span>P(1:48 < x < 2:09) = P(z<0.034599) = 0.5138</span>

4 0
2 years ago
The approximate line of best fit is given by the equation y=40x-1800. Based on this trend which of the following best predicts t
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Solve for x

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8 0
2 years ago
Find a right triangle that has legs with your irrational Lengths and a hypotenuse with a rational Length
cluponka [151]

gg easy


the legs of a triangle are related as a^2+b^2=c^2 wehre a, b, and c are the legs and the hypotonuse of a triangle respectively


let's find some stuff

one easy way is to find a rational value for c find values of a and b

lets pick c=5

a^2+b^2=5^2

a^2+b^2=25

now split up 25 into 2 things that don't have rational square roots

if we say a^2=19 and b^2=6 then we get

a=\sqrt{19} and b=\sqrt{6} (which are both irrational)

4 0
2 years ago
(2 points) Consider the linear system y⃗ ′=[−35−23]y⃗ . Find the eigenvalues and eigenvectors for the coefficient matrix. ????1=
oksian1 [2.3K]

Answer:

Please see the attached file for the complete answer.

Step-by-step explanation:

Download pdf
6 0
2 years ago
A copper smelting process is supposed to reduce the arsenic content of the copper to less than 1000 ppm. let μ denote the mean a
Hitman42 [59]
The rejection region is give by 

|z_{test}|\ \textgreater \ z_{\alpha/2}

where the test statistics is given by

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i.e. |z_{test}|=|-1.73|=1.73

Thus, z_{\alpha/2}=1.73

Using the statistical table, the level of the test is 0.04.
6 0
2 years ago
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