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Sliva [168]
4 years ago
8

15. • Solve the simultaneous equations

Mathematics
1 answer:
tamaranim1 [39]4 years ago
5 0
Answer:
B. 1 and -2
Explanation:
First, add up the equations:
x-x+3y+y=4
4y=4
y=1
Now, plug y into any of the original equations above and solve for x:
-x+1=3
-x=2
x=-2
Therefore, the answer is B. 1 and -2
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Which of the following accurately describes cot⁡(336°)?
sergij07 [2.7K]

Which of the following accurately describes cot⁡(336°)

Options are

cot⁡(-336°)

cot⁡(24°)

cot⁡(-24°)

-cot⁡(-24°)

Answer : cot⁡(-24°)

In a circle the total angle is 360 degrees. 336 degree lies in fourth quadrant.

360 degree - 336 degree = 24 degree

+24° lies on first quadrant and -24° lies on fourth quadrant.

So cot(336) is same as cot(-24)

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4 years ago
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Firdavs [7]
I think it might be the last one. Hope it helps:)
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4 years ago
Need help ASAP! Giving Brainliest!
allsm [11]

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3 years ago
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Can someone please help! I need this quickly and I’m really struggling!
GaryK [48]

Answer:

x = 4

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Step-by-step explanation:

2x - 3(x - 1) = -1

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   - 3     - 3

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y = 4 - 1

y = 3

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