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2 years ago

What is 60% of 125? Enter your answer in the box.

Mathematics

1 answer:

Law Incorporation [45]2 years ago

7 0

Answer:

explanation: because i looked it up

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Which graph shows the function y = ( 1/3)3x?

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Answer:

the first one

Step-by-step explanation:

y = 3x/3

y = x

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3 years ago

Which expression is equivalent to the given expression?

I am Lyosha [343]

Answer:

C. - 4x^2 + 5x - 4

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just expand the equation and you'll get C

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3 years ago

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6. Look at this graph: Is this relation a function? Yes or no

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Both are not functions because functions cannot have repeating x values

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3 years ago

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Which of these cannot be an 2-value?<br> A. -0.88<br> B. O<br> C. 0.88<br> D. 1

defon

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Step-by-step explanation:

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3 years ago

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Solve the system of linear equations for x and y.(cos θ)x + (sin θ)y=1(−sin θ)x + (cos θ)y = 0x=y=

lys-0071 [83]

Answer:

$\bold{x =cos\theta}\\\bold{y=sin\theta}$

Step-by-step explanation:

The given system of linear equations is:

$(cos\theta)x+(sin\theta)y=1\\(-sin\theta)x+(cos\theta)y=0$

We have to solve the equations for the values of $x, y$ .

Let us use elimination method in which we eliminate one of the variables from the two variables.

For this, let us multiply the first equation by $sin\theta$ and second equation by $cos\theta$

Now, the equations become:

$(cos\theta.sin\theta)x+(sin\theta.sin\theta)y=sin\theta\\\Rightarrow (cos\theta.sin\theta)x+(sin^2\theta)y=sin\theta ....... (1)\\\\(-sin\theta.cos\theta)x+(cos\theta.cos\theta)y=0\\\Rightarrow (-sin\theta.cos\theta)x+(cos^2\theta)y=0 ..... (2)$

Now, let us add (1) and (2):

$(sin^2\theta)y+(cos^2\theta)y=sin\theta\\\Rightarrow (sin^2\theta+cos^2\theta)y=sin\theta\\\Rightarrow (1)y=sin\theta\\\Rightarrow y = sin\theta$

Using the equation:

$(-sin\theta)x+(cos\theta)y=0$

Putting value of $y$ :

$\Rightarrow (-sin\theta)x+(cos\theta)sin\theta=0\\\Rightarrow (sin\theta)x=(cos\theta)sin\theta\\\Rightarrow x = cos\theta$

So, the answer to the system of linear equations is:

$\bold{x =cos\theta}\\\bold{y=sin\theta}$

7 0

3 years ago