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3 years ago

Simplify (5 √2 - 1) ^2

Mathematics

2 answers:

kaheart [24]3 years ago

6 0

the answer to that problem would be 25

mrs_skeptik [129]3 years ago

5 0

The answer is 25 !!!!!!!!!!!

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The area of a kitchen is 182 square feet. this is 20% of the first floor. let f represent the area of the first floor. write an

tigry1 [53]

Step-by-step explanation:

f×0.2 = 182 ft²

20% is a factor 0.2, as it is 20 of 100.

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1 year ago

What is the name of this solid figure?

ohaa [14]

Answer:

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Step-by-step explanation:

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3 years ago

Which of the following matrices is the solution matrix for the given system of equations? x + 5y = 11 x - y = 5

givi [52]

<h2>The required solution is x = 6 and y = 11 </h2>

Step-by-step explanation:

Given system of equations are

x+5y = 11 and x-y =5

$A= \left[\begin{array}{cc}1&5\\1&-1\end{array}\right]$ $X=\left[\begin{array}{c}x\\y\end{array}\right]$

and $B= \left[\begin{array}{c}11\\5\end{array}\right]$

∴AX=B

$adj A = \left[\begin{array}{cc}{-1}&{-5}\\{-1}&1\end{array}\right]$

$A= \left|\begin{array}{cc}1&5\\1&-1\end{array}\right|=-6$

∴ $A^{-1} =\frac{adj A}{|A|}$

So, $A^{-1} =\frac{ \left[\begin{array}{cc}{-1}&{-5}\\{-1}&1\end{array}\right]}{-6}$

$A^{-1} ={ \left[\begin{array}{c \c} {{\frac{1}{6} }}&{\frac{5}{6}}\ \\ {{\frac{1}{6} }}&{\frac{-1}{6}} \end{array}\right]}$

$X =A^{-1}\times B$

⇒ $\left[\begin{array}{c}x\\y\end{array}\right] ={ \left[\begin{array}{c \c} {{\frac{1}{6} }}&{\frac{5}{6}}\ \\ {{\frac{1}{6} }}&{\frac{-1}{6}} \end{array}\right]} \times \left[\begin{array}{c}11\\5\end{array}\right]$

⇒ $\left[\begin{array}{c}x\\y\end{array}\right] ={ \left[\begin{array}{c} {6}\\ {11} \end{array}\right]}$

∴ x= 6 and y = 11

The required solution is x = 6 and y = 11

7 0

3 years ago

Which of these represents point-slope form?

dedylja [7]

Answer:

y-y1=m(x-x1)

Step-by-step explanation:

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3 years ago

Read 2 more answers

Abigail has $356 in her bank account. She earns simple interest on her money at a rate of 3% per year for a total of five years.

ch4aika [34]

Answer:

A. 409.4

Step-by-step explanation:

3%=10.68

10.68*5=53.4

53.4+356=409.4

3 0

3 years ago