21 is 84% of what number?

2 answers:

7 0

21 is 84% of 25

Convert the percentage (84) into a decimal by dividing it over 100:
$\frac{84}{100} = 0.84$

Divide 21 over 0.84:
$\frac{21}{0.84} = 25$

cestrela7 [59]4 years ago

6 0

21 = 84% * x

21 = 84/100 * x

21 = 42/50 * x

21 = 21/25 * x

x = 21 * 25/21

x = 25

<span>21 is 84% of </span>25<span>.</span>

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If f(x) = 0.5(3 - x), what is the value of f(-3)<br> a. 3<br> b. 1.5<br> c. 0.5<br> d. 0

hoa [83]

Plug in -3 for x.
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3 years ago

Adjoint of [1 0 2 -1] is

aliina [53]

The adjoint of the matrix $\left[\begin{array}{cc}1&0\\2&-1\end{array}\right]$ is $\left[\begin{array}{cc}-1&0\\-2&1\end{array}\right]$

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The matrix is given as:

$\left[\begin{array}{cc}1&0\\2&-1\end{array}\right]$

For a matrix A be represented as:

$A = \left[\begin{array}{cc}a&b\\c&d\end{array}\right]$

The adjoint is:

$Adj = \left[\begin{array}{cc}d&-b\\-c&a\end{array}\right]$

Using the above format, we have:

$Adj = \left[\begin{array}{cc}-1&0\\-2&1\end{array}\right]$

Hence, the adjoint of the matrix $\left[\begin{array}{cc}1&0\\2&-1\end{array}\right]$ is $\left[\begin{array}{cc}-1&0\\-2&1\end{array}\right]$

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2 years ago

Hey boys... what up :)

iogann1982 [59]

Answer:

I am a girl

Step-by-step explanation:

Have a wonderful day!

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