Find the elapsed time from 6:15 a.m. to 2:30 p.m.

Arectemieryf0
2022-07-27
Answered

Find the elapsed time from 6:15 a.m. to 2:30 p.m.

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Jeroronryca

Answered 2022-07-28
Author has **13** answers

8 hours and 15 minutes

asked 2022-06-23

I Have read that for a matrix of reals $Y$ and a p.s.d matrix $B$ that the

Maximum of $f(Y)=Tr({Y}^{T}BY)$ subject to ${Y}^{T}Y=I$ is achieved when $span(Y)$ equals the span of the first $d$ eigen-vectors of $B$.

What is the reasoning behind this eigen-solution leading to the maximum?

Maximum of $f(Y)=Tr({Y}^{T}BY)$ subject to ${Y}^{T}Y=I$ is achieved when $span(Y)$ equals the span of the first $d$ eigen-vectors of $B$.

What is the reasoning behind this eigen-solution leading to the maximum?

asked 2021-07-31

Are the two triangles similar? If so, by what similarity shortcut?

SSS

SAS

AA

Not Similar

SSS

SAS

AA

Not Similar

asked 2022-07-18

Probability of picking 2 numbers between 0 and 1 to be within 1/2 distance of each other?

What's the probability of picking 2 numbers, x and y, between 0 and 1 such that they will be within the distance of 12 of each other?

In other words, $Pr(\text{distance between x and y}\le \frac{1}{2})=?$

I solved the problem through a geometric approach by rewriting the probability as $Pr(|x-y|\le \frac{1}{2})$ and graphing $|x-y|\le \frac{1}{2}$

From the graph, I calculated the red area to be 75%.

Question: What would be a non-geometric solution to this problem?

What's the probability of picking 2 numbers, x and y, between 0 and 1 such that they will be within the distance of 12 of each other?

In other words, $Pr(\text{distance between x and y}\le \frac{1}{2})=?$

I solved the problem through a geometric approach by rewriting the probability as $Pr(|x-y|\le \frac{1}{2})$ and graphing $|x-y|\le \frac{1}{2}$

From the graph, I calculated the red area to be 75%.

Question: What would be a non-geometric solution to this problem?

asked 2022-07-29

TRUE OR FALSE?

The law of sines and law of cosines can be used to find angle and sides measures in any triangle?

The law of sines and law of cosines can be used to find angle and sides measures in any triangle?

asked 2021-02-01

To show:

Given information:

a and b are real numbers.

asked 2022-04-21

Solve below somewhat symmetric equations:

x, y, z subject to

${x}^{2}+{y}^{2}-xy=3$

${(x-z)}^{2}+{(y-z)}^{2}-(y-z)(x-z)=4$

${(x-z)}^{2}+{y}^{2}-y(x-z)=1$

$x,y,z\in {R}^{+}$

x, y, z subject to

asked 2021-08-14

Find polar equations for the circles.

Sketch each circle in the coordinate plane and label it with both its Cartesian equation and its polar equation.

${x}^{2}+{y}^{2}+5y=0$

Sketch each circle in the coordinate plane and label it with both its Cartesian equation and its polar equation.