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Ilya [14]
2 years ago
12

How many solutions does equation 6x + y = -1 and -6x - 4y =4 have

Mathematics
1 answer:
murzikaleks [220]2 years ago
6 0

Answer:

There are no solutions.

Step-by-step explanation:

When you solve for x in the first equation, you get x = (-1-y)/6. Plugging this value for x into the second equation gives you -4y = 4 + y, which has no solutions.

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Round this number art44,591
Elenna [48]

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44,000

Step-by-step explanation:

5 0
3 years ago
Anybody have an answer?
Usimov [2.4K]
You can cross out sin x from both the numerator and denominator, as sin x over sin x should always equal 1.

The answer is -cos x.
8 0
3 years ago
Question 9 of 10
dolphi86 [110]

Answer:

is this a multiple choice question?

Step-by-step explanation:

4 0
3 years ago
"Parameterize the plane through the point (−1,−3,1) with the normal vector ⟨−4,4,3⟩
Makovka662 [10]
The equation of the required plane can be obtained thus:
-4(x + 1) + 4(y + 3) + 3(z - 1) = 0
-4x - 4 + 4y + 12 + 3z - 3 = 0
4x - 4y - 3z = 5

Let x = 1, y = 2, then 4(1) - 4(2) - 3z = 5
z = (4 - 8 - 5)/3 = -9/3 = -3
Thus, point (1, 2, -3) is a point on the plane.

Let a = (a1, a2, a3) and b = (b1, b2, b3) be vectors parallel to the plane.
Then, -4a1 + 4a2 + 3a3 = 0 and -4b1 + 4b2 + 3b3 = 0
Let a1 = 2, a2 = -1, then a3 = (4(2) - 4(-1))/3 = (8 + 4)/3 = 12/3 = 4 and let b1 = -1 and b2 = 2, then b3 = (4(-1) - 4(2))/3 = (-4 - 8)/3 = -12/3 = -4
Thus a = (2, -1, 4) and b = (-1, 2, -4)

Therefore, the required parametric equation is r(s, t) = s(2, -1, 4) + t(-1, 2, -4) + (1, 2, -3) = (2s, -s, 4s) + (-t, 2t, -4t) + (1, 2, -3) = (2s - t + 1, -s + 2t + 2, 4s - 4t - 3)


3 0
4 years ago
The resonance frequency f in an electronic circuit containing inductance L and capacitance C in series is given by f=1/2π√LC. De
Nataly_w [17]
For this case we have the following function:
 f = 1 / (2π√LC)
 Clearing L we have:
 √LC = 1 / (2πf)
 LC = (1 / (2πf)) ^ 2
 L = (1 / C) * (1 / (2πf)) ^ 2
 Substituting values:
 L = (1 / 0.0001) * (1 / (2 * 3.14 * 6.2)) ^ 2
 L = 6.596253438
 Round to the nearest tenth:
 L = 6.6
 Answer:
 
L = 6.6
7 0
4 years ago
Read 2 more answers
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