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PtichkaEL [24]
2 years ago
10

A submarine dives 650 feet every 5 minutes and 5,200 feet every 40 minutes.

Mathematics
2 answers:
Olenka [21]2 years ago
8 0

Answer:

Step-by-step explanation:

puteri [66]2 years ago
6 0

Answer:

feet per minute

 

300/2 = 6750/45 = 150 ft/minute

 

Since submarines dive quickly, and need to be able

to respond rapidly to sudden changes in conditions,

it is more reasonable to use feet per minute.  If we work

in feet per hour at this speed we would need to convert

the data back to feet per minute in order to ensure we

don't dive too deep.

 

Dn = Dn-1 + 150m

where Dn is depth, Dn-1 is previous depth,

and m is number of minutes diving.

 

1

Downvote

BRAINLIEST PLEASE

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the regression equation y=-0.414 + 106.55 approximates the percent of people in an audience who finish watching a documentary, y
WARRIOR [948]

Answer:

<em><u>The answer is</u></em>: <u>59%</u>.

Step-by-step explanation:

To calculate the percentage of people who have seen the movie we start from: y = -0.414x + 106.55; and of x = 115; making the appropriate substitutions we would have left: y = -0.414 (115) + 106.55; y = -47.61 + 106.55; y = 58.94, which rounded to exceed 0.5 would be 59%.

<em><u>The answer is</u></em>: <u>59%</u>.

4 0
3 years ago
Read 2 more answers
Find the sum of the polynomials below.
Korolek [52]
It's A.
5+6= 11 x^5
2+1= 3 x
-1+8=8-1= 7



5 0
4 years ago
I NEED help with a math problem.
Mazyrski [523]

Answer:

109

Step-by-step explanation:

You can brute-force this:

Candidate numbers that are divisable by 13 if you take away 5: 18 , 31 , 44 , 57 , 70 , 83 , 96 , <u>109 </u>, 122 , 135 , 148

Candidate numbers that are divisable by 14 if you take away 11: 25 , 39 , 53 , 67 , 81 , 95 , <u>109 </u>, 123 , 137

Only 109 is in both lists.

8 0
3 years ago
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Orthogonally diagonalize the​ matrix, giving an orthogonal matrix P and a diagonal matrix D. To save​ time, the eigenvalues are
alexgriva [62]

Answer:

P=\left(\begin{array}{ccc}-\frac{2}{3}&-\frac{2}{3}&\frac{1}{3}\\\frac{1}{\sqrt{5}}&0&\frac{2}{\sqrt{5}}\\-\frac{4}{3\sqrt{5}}&\frac{\sqrt{5}}{3}&\frac{2}{3\sqrt{5}}\end{array}\right)

Step-by-step explanation:

It is a result that a matrix A is orthogonally diagonalizable if and only if A is a symmetric matrix.  According with the data you provided the matrix should be

A=\left(\begin{array}{ccc}-9&-4&2\\ -4&-9&2\\2&2&-6\\\end{array}\right)

We know that its eigenvalues are \lambda_{1}=-14, \lambda_{2}=-5, where \lambda_{2}=-5 has multiplicity two.

So if we calculate the corresponding eigenspaces for each eigenvalue we have

E_{\lambda_{1}=-14}=\langle(-2,-2,1)\rangle,E_{\lambda_{2}=-5}=\langle(1,0,2),(-1,1,0)\rangle..

With this in mind we can form the matrices P, D that diagonalizes the matrix A so.

P=\left(\begin{array}{ccc}-2&-2&1\\1&0&2\\-1&1&0\\\end{array}\right)

and

D=\left(\begin{array}{ccc}-14&0&0\\0&-5&0\\0&0&-5\\\end{array}\right)

Observe that the rows of P are the eigenvectors corresponding to the eigen values.

Now you only need to normalize each row of P dividing by its norm, as a row vector.

The matrix you have to obtain is the matrix shown below

3 0
4 years ago
Hello good day <br>can you help me please:(​
iVinArrow [24]

Answer:

31. A

32. D

33. B

4 0
2 years ago
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