3 years ago

I NEED HELP ! I WILL CASH APP YOU !

Mathematics

1 answer:

Amanda [17]3 years ago

3 0

Answer:B and D

Step-by-step explanation:big brain

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2x – 4y = 14<br> x = 2y – 2<br><br> What is the solution to the system?

anastassius [24]

2x-4y=14
X=2y-2

2x-4y=14
x-2y=-2

x-2y=12
x-y=-6

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A 1000 KG car has 50,000 joules of kinetic energy. What is the speed?

zhannawk [14.2K]

KE=1/2mv^2
50000=(0.5)(1000)v^2
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Translate this sentence into an equation. The sum of 16 and Delia's height is 74. Use the variable d to represent Delia's height

Sedbober [7]

The answer is :

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Given that cos θ = –12∕13 and θ is in quadrant III, find csc θ.

Trava [24]

Answer:

Step-by-step explanation:

We are given:

$\displaystyle \cos(\theta)=-\frac{12}{13},\,\theta\in\text{QIII}$

Since cosine is the ratio of the adjacent side over the hypotenuse, this means that the opposite side is (we can ignore negatives for now):

$o=\sqrt{13^2-12^2}=\sqrt{25}=5$

So, the opposite side is 5, the adjacent side is 12, and the hypotenuse is 13.

And since θ is in QIII, sine/cosecant is negative, cosine/secant is negative, and tangent/cotangent is positive.

Cosecant is given by the hypotenuse over the opposite side. Thus:

$\displaystyle \csc(\theta)=\frac{13}{5}$

Since θ is in QIII, cosecant must be negative:

$\displaystyle \csc(\theta)=-\frac{13}{5}$

Our answer is A.

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3 years ago