All categories

3 years ago

Determine the value of the following if it is possible. If it is not possible, explain.

Mathematics

1 answer:

evablogger [386]3 years ago

4 0

Answer:

The answer to your question is the letter C

Step-by-step explanation:

Data

When we multiply a scalar by a matrix, we must multiply the scalar by each of the numbers of the matrix and the result of the multiplication stays in the same place.

For this problem:

3 | -2 0 | = | (-2 x 3) (0 x 3) |

| 4 -7 | | (4 x 3) (-7 x 3) |

= | -6 0 |

| 12 -21 |

You might be interested in

Please answer this correctly

musickatia [10]

There are 4 quarts in 1 gallon.

3 x 4 = 12

12 + 2 = 14 quarts

Hope this helps!! :)

6 0

2 years ago

A truck has a force of 2000 newtons and is moving 10 miles per hour. How much mass does the truck have?

worty [1.4K]

Answer:

Force= Mass×Accelaraion

F=m×a

But as The unit of accelaration is given miles per hour and the SI is meters per second sqaure we have to convert 10mph to m/s²

Thus, we have 10mph = 4.47 meters per second square. (i converted using scientific calculator)

So now we have,

2000N= m×4.47m/s²

= 2000/4.47m/s²=m

= 447.42

Thus the mass of the object is 447.42 (i am not sure of units)

7 0

2 years ago

Read 2 more answers

Answer and explanation thanks

castortr0y [4]

75% of people enjoy rock music.

24÷32 = .75

5 0

2 years ago

Read 2 more answers

Evaluate the integral from 0 to 1/2 of xcospixdx

aleksklad [387]

$\bf \int\limits_{0}^{\frac{1}{2}}xcos(\underline{\pi x})\cdot dx\\
-----------------------------\\
u=\underline{\pi x}\implies \frac{du}{dx}=\pi \implies \frac{du}{\pi }=dx\\
-----------------------------\\
thus\implies \int\limits_{0}^{\frac{1}{2}}xcos(u)\cdot \cfrac{du}{\pi }
\\\\
\textit{wait a sec, we need the integrand in u-terms}\\
\textit{what the dickens is up with that "x"?}\qquad well\\
-----------------------------\\
u=\pi x\implies \frac{u}{\pi }=x\\
-----------------------------\\$ $\bf thus
\\\\
\int\limits_{0}^{\frac{1}{2}}\cfrac{u}{\pi }cos(u)\cdot \cfrac{du}{\pi }\implies 
\int\limits_{0}^{\frac{1}{2}}\cfrac{u}{\pi }\cdot \cfrac{cos(u)}{\pi }\cdot du\implies 
\cfrac{u}{\pi^2}\int\limits_{0}^{\frac{1}{2}}cos(u)\cdot du\\
-----------------------------\\
\textit{now, let us do the bounds}
\\\\
u\left( \frac{1}{2} \right)=\pi\left( \frac{1}{2} \right)\to \frac{\pi }{2}
\\\\
u\left( 0 \right)=\pi (0)\to 0\\
-----------------------------\\$ $\bf thus
\\\\
\cfrac{u}{\pi^2}\int\limits_{0}^{\frac{\pi }{2}}cos(u)\cdot du\implies \cfrac{u}{\pi^2}\cdot sin(u)\implies \left[ \cfrac{u\cdot sin(u)}{\pi^2} \right]_{0}^{\frac{\pi }{2}}
$

5 0

2 years ago

Which TWO representations show the same function<br><br>(picture included)

AnnyKZ [126]

The graph and the equation show the same

5 0

2 years ago