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VladimirAG
2 months ago
5

Suppose F⃗ (x,y)=⟨ex,ey⟩F→(x,y)=⟨ex,ey⟩ and CC is the portion of the ellipse centered at the origin from the point (0,1)(0,1) to

the point (7,0)(7,0) centered at the origin oriented clockwise. (a) Find a vector parametric equation r⃗ (t)r→(t) for the portion of the ellipse described above for 0≤t≤π/20≤t≤π/2.
Mathematics
1 answer:
zzz [12.3K]2 months ago
7 0

The likely equation for the ellipse is given by

\dfrac{x^2}{49}+y^2=1

This can be parameterized as a segment of the curve using

C

with 0\le t\le\frac\pi2. Then we can proceed with

\vec r(t)=\langle7\sin t,\cos t\rangle

and other related calculations.

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Integrated circuits from a certain factory pass a particular quality test with probability 0.75. The outcomes of all tests are m
tester [12383]

Answer:

The anticipated number of tests required to identify 680 acceptable circuits is 907.

Step-by-step explanation:

For any circuit, there are two potential results: it either passes the test or it fails. The likelihood of passing is independent between circuits. Therefore, we apply the binomial probability distribution to address this scenario.

Binomial probability distribution

This distribution calculates the chance of obtaining exactly x successes across n trials, where x has only two possible outcomes.

To find the expected number of trials to achieve r successes with a probability p, the formula is given by:

E = \frac{r}{p}

Circuits from a specific factory pass a certain quality evaluation with a probability of 0.75.

Thus, to determine the expected number of tests needed for 680 acceptable circuits, let’s denote this as E where r = 680.p = 0.75

E = \frac{r}{p}

E = \frac{680}{0.75}

E = 907

The expected number of tests necessary to find 680 acceptable circuits is 907.

8 0
2 months ago
Which of the following appear in the diagram below??
zzz [12365]
The elements that are visible include A, B, and C.
7 0
2 months ago
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How do I interpret this equation 5+1x10= is the answer 15 or 60?
Leona [12618]
To solve simple equations like this, it's essential to apply the order of operations defined by PEMDAS. This acronym represents the sequential operations needed for solving equations.
PEMDAS indicates Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction.
According to PEMDAS, multiplication takes precedence over addition, leading us to:
5 + [1*10] = 5 + 10 = 15.
6 0
3 months ago
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1. Hope's employer deposits her paycheck directly into her checking account. How much would her employer have
lawyer [12517]

Answer:

$284.79

Step-by-step explanation:

Hope has a balance of $284.79 in her account. She receives a paycheck biweekly.

7 0
2 months ago
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Max is analyzing the test scores he earned in his biology class. The class had 7 tests, on which he scored 85, 93, 78, 90, 88, 9
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Hi there!

To calculate the mean, we first need to sum all the scores and divide by the total number of tests.

85+93+78+90+88+97+88=619

619/7≈88.43

Mean≈88.43

Next, we will determine the median by arranging the scores in ascending order.

78,85,88,88,90,93,97

To find the median, we look for the middle score, which is 88.

Median: 88

Lastly, we identify the mode, which is the score that occurs most frequently. Here, 88 appears twice while the others appear once, making 88 the mode.

Mode:88

I hope this is useful!

5 0
2 months ago
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