Tema
Q:
Find the inverse of the given matrix, if it exists.
\[ M=\left[\begin{array}{rrr}1 & 1 & -1 \\ -2 & 1 & 0 \\ 0 & -2 & -2\end{array}\right] \]
Q:
what was the stance of mississippi toward adding the 19th
amendment giving women the right to vote|
Q:
(a) An experiment involves 31 participants. From these, a group of 4 participants is to be tested
under a special condition. How many groups of 4 participants are possible?
(b) A certain committee consists of 15 people. From the committee, a president, a vice-president, a
secretary, and a treasurer are to be chosen. In how many ways can these 4 offices be filled? Assume
that a committee member can hold at most one of these offices.
and
Q:
This formula is used for converting
degrees Fahrenheit \( (f) \) to degrees Celsius \( (c) \) :
\[ c=\frac{5(f-32)}{9} \]
Use the formula to convert 77 degrees Fahrenheit to
degrees Celsius.
Q:
capacidad nominal?.
9. un alternador tiene una regulación de voltaje del \( 10 \% \). Si el voltaje sin carga es 220 V ,
¿cuál es el voltaje a plena carga?
Q:
4.) Who were the women who organized the first convention?
Q:
7. Encuéntrese la regulación de un generador de ca que tiene un voltaje a plena carga de
2600 V y un voltaje sin carga de 3310 V con un factor de potencia de \( 85 \% \). Con un FP de la
unidad, ¿será la regulación porcentual mayor, menor o igual que con el FP atrasado \( 85 \% \) ?.
Q:
Which of the following statements about the first moon landing is TRUE?
Russia's Sputnik mission first landed on the moon in 1962
a \( \quad \) The United States first landed on the moon in 1955 with the Challenger Mission
c The United States first lended on the moon in 1969 with the Apollo 11 Mission
d The United States and Russia worked together in 1969 to put astronauts on the Moon.
Q:
What is the basis for
considering any work/activity/
idea as right or wrong?
Does it affect a person's
personality?
Discuss.
Q:
Let \( V=\{(a, b) \mid a, b \in \mathbb{R}\} \), vector addition \( (+) \) and scalar multiplication \( (\cdot) \) be defined
as follows:
For any \( \alpha \in \mathbb{R} \) and \( \left(a_{1}, b_{1}\right),\left(a_{2}, b_{2}\right) \in V \)
1) \( \left(a_{1}, b_{1}\right)+\left(a_{2}, b_{2}\right)=\left(a_{1}+a_{2}, b_{1}+b_{2}\right) \)
2) \( \alpha \cdot\left(a_{1}, b_{1}\right)=\left(\alpha^{2} a_{1}, \alpha^{2} b_{1}\right) \)
Is \( (V, \mathbb{R},+, \cdot) \) a vector space? Explain your answer.
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