2 years ago

What is the solution to the system of equations graphed below?

Mathematics

1 answer:

tatiyna2 years ago

8 0

I think it is D..

BMK

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The line with equation a + 4b = 0 coincides with the terminal side of an angle θ in standard position and cos θ>0 . What is t

Nikitich [7]

Answer:

$\frac{-1}{\sqrt{17} }$

Step-by-step explanation

We have given that equation of line a+4b=0

⇒4b= -a

⇒ $b= \frac{-a}{4}$

slope of line = $tan\theta =\frac{P}{B}= \frac{-1}{4}$

⇒ $tan\theta$ is negative therefore it lies into 4th quadrant

By, Pythagoras theorem $H^2=P^2+B^2$

by putting value of P= -1 & B=4

the value of $H=\sqrt{17}$

with the given condition $cos\theta>0$

i.e. $\theta$ ∈ (3π/2, 2π)

now, $sin\theta= \frac{P}{H}= \frac{-1}{\sqrt{17}}$

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2 years ago

The proportional relationship between the number of hours a business operates and its total cost of electricity is shown in the

aalyn [17]

Answer:

The answer is A.

Step-by-step explanation:

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2 years ago

If 2 ounces is 240 calories then what is 2/3 ounces

Alex17521 [72]

If 2 ounces = 240 calories

1 ounce = 120 calories
So 2/3 ounces = (2/3) * 120
= 80 calories

4 0

3 years ago

What is the answer and how do u get that answer

earnstyle [38]

Let me see a better picture

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2 years ago

Please help! <br> Trigonometry review

charle [14.2K]

Answer: x = 9

Step-by-step explanation:

15 / 20 = (2x + 3) / 28

cross multiply

15(28) = 20(2x + 3)

420 = 40x + 60

360 = 40x

x = 9

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2 years ago