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3 years ago

What is the cost of 11 movie tickets 4 movie tickets cost $48.

Mathematics

1 answer:

Marina86 [1]3 years ago

6 0

Step-by-step explanation:

I think 132dollor in this question

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Find the area of the rectangle is x² + 7x + 12. if its breadth is (x + 3), then find its length.

miv72 [106K]

Answer:

the length. is : x+4

Step-by-step explanation:

x² + 7x + 12 = (x+3)(x+4)

the length. is : x+4

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3 years ago

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An episode of a television show is 60 minutes long when it originally airs with commercials. On a DVD without commercials, the e

ryzh [129]

60-41 1/2=18 1/2 18 1/2 divided by 1/2=37/2*2 (cross cancel 2s)=37

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3 years ago

Can somebody help me out pleaseeee ??

nexus9112 [7]

Answer:

67.5cm^2

Step-by-step explanation:

area of a triangle is 0.5xaxb

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3 years ago

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natima [27]

Answer:

See explanation

Step-by-step explanation:

Let x be the number of spade shovels, y -the number of flat shovels and z - the number of square showels sold that day.

The store keeps an inventory of 80 shovels, then

x+y+z=80

The store always buy twice as many spade shovels as square, so

x=2z

The total cost of all shovels is

16x+9.60y+12.80z=1,072

a) The system of three equations is

$\left\{\begin{array}{l}x+y+z=80\\ \\x=2z\\ \\16x+9.60y+12.80z=1,072\end{array}\right.$

b) In matrix form this is

$\left(\begin{array}{ccc}1&1&1\\ 1&0&-2\\ 16&9.60&12.80\end{array}\right)\cdot \left(\begin{array}{c}x\\y\\z\end{array}\right)=\left(\begin{array}{c}80\\0\\1,072\end{array}\right)$

c) The determinant is

$\left\|\begin{array}{ccc}1&1&1\\ 1&0&-2\\ 16&9.60&12.80\end{array}\right\|=0-32+9.60-0+19.20-12.80=-16$

d) Find three determinants:

$\left\|\begin{array}{ccc}80&1&1\\ 0&0&-2\\ 1,072&9.60&12.80\end{array}\right\|=0-2,144+0-0+1,536-0=-608$

$\left\|\begin{array}{ccc}1&80&1\\ 1&0&-2\\ 16&1,072&12.80\end{array}\right\|=0-2,560+1,072-0+2,144-1,024=-368$

$\left\|\begin{array}{ccc}1&1&80\\ 1&0&0\\ 16&9.60&1,072\end{array}\right\|=0+0+768-0-0-1,072=-304$

So,

$x=\dfrac{-608}{-16}=38\\ \\y=\dfrac{-368}{-16}=23\\ \\z=\dfrac{-304}{-16}=19$

e) If the store doubled all prices and inventory, then the new matrix is

$\left(\begin{array}{ccc}1&1&1\\ 1&0&-2\\ 32&19.20&25.60\end{array}\right)\cdot \left(\begin{array}{c}x\\y\\z\end{array}\right)=\left(\begin{array}{c}160\\0\\2,144\end{array}\right)$

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3 years ago

5 + 7 x 7 + 8<br> ( f233 p01n75)<br> (1k 7h1s b7w)

mixer [17]

62

Mark brainliest please

Hope this helps you

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3 years ago

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