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lozanna [386]
3 years ago
5

The Symphony

Mathematics
1 answer:
lord [1]3 years ago
5 0
Answer is 12.50. u can comment on my answer if you would like to see how that is the correct answer :)
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What is 0.42 rounded to the hundredths place
ruslelena [56]

Answer:There is no need for rounding because 2 is the hundredths place so it's still 0.42

Step-by-step explanation:

8 0
3 years ago
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Let Upper A equals left bracket Start 2 By 2 Matrix 1st Row 1st Column negative 2 2nd Column 4 2nd Row 1st Column 1 2nd Column 3
Yuliya22 [10]

Answer: a) AB = \left[\begin{array}{ccc}-14&26\\-11&22\end{array}\right] ; b) \left[\begin{array}{ccc}5&-5\\13&9\end{array}\right] ; c) No, they are different; d) No, they are never the same;

Step-by-step explanation:

a) A = \left[\begin{array}{ccc}-2&4\\1&3\end{array}\right] , B = \left[\begin{array}{ccc}-2&1\\-3&7\end{array}\right]. This multiplication is possible, because matrix A has 2 columns and matrix B has 2 rows. When those value are equal, the multiplication is possible.

AB = \left[\begin{array}{ccc}-2&4\\1&3\end{array}\right] . \left[\begin{array}{ccc}-2&1\\-3&7\end{array}\right] = \left[\begin{array}{ccc}-14&26\\-11&22\end{array}\right]

b) BA = \left[\begin{array}{ccc}-2&1\\-3&7\end{array}\right] . \left[\begin{array}{ccc}-2&4\\1&3\end{array}\right] = \left[\begin{array}{ccc}5&-5\\13&9\end{array}\right]

c) As, we can see, parts a and b are differents.

d) With matrices, multiplication is not commutative, which means AB≠BA

3 0
4 years ago
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A lightbulb is installed. With probability 1/3 , it burns out immediately when it is first installed. With probability 2/3 , it
Andrej [43]

Answer:

1 time unit

Step-by-step explanation:

There is a 1 in 3 chance that the time until the bulb burns out is zero, and a 2 in 3 chance that the time is the average between 0 and 3 (since it is uniformly distributed). Therefore, the expected value for the time until it burns is:

E(x) = \frac{1}{3}*0+\frac{2}{3} *\frac{0+3}{2}\\ E(X) = 1

The expected value of the time until the lightbulb burns out is 1 time unit.

3 0
3 years ago
Identify two methods in the Constitution to limit power of the national government?
Dmitry_Shevchenko [17]
First, the principle of Check and Balance applies. The Check and Balance system is devised to have all the branches of the government from overpowering one another. This is done through having independent powers in the government. 

The next would be the principle that states that all powers not under the Federal government would be under the power of the State.
6 0
3 years ago
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How many liters equal 1258 cm3?
Ksivusya [100]
B.1.258, hope I helped! :)
7 0
4 years ago
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