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:

You might be interested in

The average rate of the first part of Yi’s walk on a park loop was 4 miles per hour. She then met up with a friend and the two w

PolarNik [594]

Answer: simultaneous equation and speed formula lead to:

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

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

7 0

3 years ago

Read 2 more answers

2/3 subtracted from 1/2

hodyreva [135]

Answer:

<h2>2/3-1/2= 1/6 and that is your answer </h2>

6 0

2 years ago

Read 2 more answers

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)

From trigonometric:

sin(x + y) = sinxcosy + cosxsiny

sin(x - y) = sinxcosy - cosxsiny

cos(x + y) = cosxcosy - sinxsiny

cos(x - y) = cosxcosy + sinxsiny

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