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Mathematics

1 answer:

ZanzabumX [31]3 years ago

4 0

Answer:

Step-by-step explanation:

$\left[\begin{array}{ccc}7&31\\142&19\end{array}\right]$ = 7(19) - 142(31) = - 4269

$\left[\begin{array}{ccc}7&11&21\\55&-8&2\\-16&-1&-9\end{array}\right]$ = 7(- 8)(- 9) + 11(2)(- 16) + 21(55)(- 1) - 21(- 8)(- 16) - 7(2)(- 1) - 11(55)(- 9) = 1768

$\left[\begin{array}{ccc}9.07&6.02&2.01\\-30.7&2.5&3.5\\3.55&-1.1&2.35\end{array}\right]$ = 9.07(2.5)(2.35) + 6.02(3.5)(3.55) + 2.01(- 30.7)(- 1.1) - 2.01(2.5)(3.55) - 9.07(3.5)(- 1.1) - 6.02(- 30.7)(2.35) = 647.3561

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What is the total weekly pay for a person earning $9.00 an hour and working only 8 hours a day for 5 days?

melomori [17]

First you woyld find how many hours total he worked.
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3 years ago

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lions [1.4K]

Answer:

Step-by-step explanation:

1. Change 48 cm to mm, which will give you 480 mm

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2 years ago

Graph: y - 10 = -2(z – 10)