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ANTONII [103]
2 years ago
11

Pls help me with these problems

Mathematics
2 answers:
andreyandreev [35.5K]2 years ago
5 0

Answer:

Do u want the formulas or working

lawyer [7]2 years ago
3 0
Detailed explanation below:

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X = 0.7 - (3 - 4x)/5

Step-by-step explanation: Please find the attached file for the solution.

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3 years ago
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2/3 subtracted from 1/2
hodyreva [135]

Answer:

<h2>2/3-1/2= 1/6 and that is your answer </h2>
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Show that f(x) f(y) - f(x+y), where f(x)= [cos x - sin x o] [sin x cos x o] [o o 1]
Naddik [55]

Answer:

The answer is below

Step-by-step explanation:

Show that f(x) f(y) = f(x+y)

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sin(x + y) = sinxcosy + cosxsiny

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f(x)=\left[\begin{array}{ccc}cosx&-sinx&0\\sinx&cosx&0\\0&0&1\end{array}\right] ,f(y)=\left[\begin{array}{ccc}cosy&-siny&0\\siny&cosy&0\\0&0&1\end{array}\right] \\\\\\f(x)f(y)=\left[\begin{array}{ccc}cosxcosy-sinxsiny&-cosxsiny-sinxcosy&0\\sinxcosy+cosxsiny&-sinxsiny+cosxcosy&0\\0&0&1\end{array}\right] \\\\\\f(x)f(y)=\left[\begin{array}{ccc}cos(x+y)&-sin(x+y)&0\\sin(x+y)&cos(x+y)&0\\0&0&1\end{array}\right] \\\\\\

f(x+y)=\left[\begin{array}{ccc}cos(x+y)&-sin(x+y)&0\\sin(x+y)&cos(x+y)&0\\0&0&1\end{array}\right] \\\\\\Therefore\ f(x)f(y)=f(x+y)

4 0
3 years ago
Answer quick for my hw pls
Readme [11.4K]

Answer:

day 14 , 450 dollars

Step-by-step explanation:

We called x is the number of days

Zippy Rent-a-car: 25x + 100

Speedy Rent-a-car: 30x + 30

25x + 100 = 30x + 30

25x -30x = 30 - 100

-5x = -70

x = 14

5 0
3 years ago
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There are 10 apples in the fridge and 2 of them are bad. if you grab 3 apples, what is the expected number of bad apples
Vilka [71]
2 there should still be the 2 bad apples
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3 years ago
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