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Nadya [2.5K]
3 years ago
13

Can someone explain to me the concept of matrices?

Mathematics
1 answer:
ira [324]3 years ago
8 0
Its to so you can be comfortable while sleeping
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Rae earns $8.40 an hour plus an overtime rate equal to 1(1/2)times her regular pay for each hour worked beyond 40 hours. What ar
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Answer:

At $8.40 an hour for a 40 hour week the earnings would be $336. With 5 hours overtime the pay would be $12.60 an hour which equals $63 making her earnings a total of $399 for the 45 hour work week. would be Step-by-step explanation:

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3 years ago
Which choice correctly shows the solution(s) of the equation x2 = 225?
prisoha [69]

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C)x = +/-15

Step-by-step explanation:

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-15x-15=225

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3 years ago
4 Solve the system to find the y-value of the
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Step-by-step explanation:

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3 0
3 years ago
find the point on the terminal side of θ = negative three pi divided by four that has an x coordinate of negative 1
Mila [183]
Check the picture below, is a negative angle, thus, is going "clockwise"

\bf tan(\theta)=\cfrac{opposite}{adjacent}\qquad tan\left( -\frac{3\pi }{4} \right)=\cfrac{y}{x}\implies  tan\left( -\frac{3\pi }{4} \right)=\cfrac{y}{-1}
\\\\\\
-1\cdot  tan\left( -\frac{3\pi }{4} \right)=y\implies -1\cdot \cfrac{sin\left( -\frac{3\pi }{4} \right)}{cos\left( -\frac{3\pi }{4} \right)}=y
\\\\\\
-1\cdot \cfrac{-1}{-1}=y\implies -1

4 0
3 years ago
Find the standard deviation of the sample ($23.14, $20.12, $56.21, $34.56, $43.74)
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S.D=61.824137824783

Step-by-step explanation:

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3 years ago
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