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Romashka-Z-Leto [24]
4 years ago
8

3x+2y-z=8 -3x+4y+5z=-14 X-3y+4z=-14

Mathematics
1 answer:
Luda [366]4 years ago
4 0

Answer:

B? I think

Step-by-step explanation:

sorry I really want to help but I dont get what the question is asking

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Given the two points (0,4) and (2, 6), what would the numerator of the equation for slope be?
kap26 [50]
Hi! The equation for finding the slope given 2 points is \frac{ x_{2} - x_{1}}{y_2-y_1} . With the points given, we can plug those into the equation, giving \frac{6-4}{2-0}, which is the same as 2/2, or 1/1. So the numerator, or the top number would just be 1.
3 0
4 years ago
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Convert <br>11 m^2 to yd^2
AveGali [126]
1 yd = 3 m

11/3 = 3.667 (rounded

11m^2 = 3.667yd^2

hope this helps
6 0
4 years ago
Clock wise angle from minutes hand to hour hand at 7 o'clock is what (a)240° (b)230° (c)220° (d)210° (e)200°
lord [1]

Answer:

d

Step-by-step explanation:

At 7 o' clock the minute hand is at 12 and the hour hand at 7

There is 360° in a complete revolution, thus between 7 and 12

angle = \frac{7}{12} × 360° = 7 × 30° = 210° → d

6 0
3 years ago
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Find parametric equations for the path of a particle that moves along the circle x2 + (y − 1)2 = 16 in the manner described. (En
ArbitrLikvidat [17]

Answer:

a) x = 4\cdot \cos t, y = 1 + 4\cdot \sin t, b) x = 4\cdot \cos t, y = 1 + 4\cdot \sin t, c) x = 4\cdot \cos \left(t+\frac{\pi}{2}  \right), y = 1 + 4\cdot \sin \left(t + \frac{\pi}{2} \right).

Step-by-step explanation:

The equation of the circle is:

x^{2} + (y-1)^{2} = 16

After some algebraic and trigonometric handling:

\frac{x^{2}}{16} + \frac{(y-1)^{2}}{16} = 1

\frac{x^{2}}{16} + \frac{(y-1)^{2}}{16} = \cos^{2} t + \sin^{2} t

Where:

\frac{x}{4} = \cos t

\frac{y-1}{4} = \sin t

Finally,

x = 4\cdot \cos t

y = 1 + 4\cdot \sin t

a) x = 4\cdot \cos t, y = 1 + 4\cdot \sin t.

b) x = 4\cdot \cos t, y = 1 + 4\cdot \sin t.

c) x = 4\cdot \cos t'', y = 1 + 4\cdot \sin t''

Where:

4\cdot \cos t' = 0

1 + 4\cdot \sin t' = 5

The solution is t' = \frac{\pi}{2}

The parametric equations are:

x = 4\cdot \cos \left(t+\frac{\pi}{2}  \right)

y = 1 + 4\cdot \sin \left(t + \frac{\pi}{2} \right)

7 0
3 years ago
10) 9 people can paint a bridge in 5 hours,
ale4655 [162]

Step-by-step explanation:

The number of people to paint the bridge is inversely proportional to the number of hours it takes.

(If there are more people, it will take less time etc.)

9 people can paint the bridge in 5 hours.

=> 2 people can paint the bridge in 5 * (9/2) = 22.5 hours.

8 0
3 years ago
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