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riadik2000 [5.3K]
3 years ago
6

Erma solves an equation by first subtracting 8 from both sides of the equation. She then divides both sides by 8 and finds the s

olution. Which of the following gives the properties of equality that she used and their correct order?
Mathematics
1 answer:
Leona [35]3 years ago
3 0
Subtraction property of equality......and then, division property of equality
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The general equation of the plane that contains the points (1, 0, 2), (−1, 1, −2), and the origin is of the form ax + by + cz =
ICE Princess25 [194]

Answer:

2x-z=0 is the equation of the plane.

Step-by-step explanation:

Given that the plane passes through the points (1,0,2) and (-1,1,-2)

and also origin.

Hence equation of the plane passing through three points we can use

Any plane passing through 3 given points is given as

\left[\begin{array}{ccc}x-x_1&y-y_1&z-z_1\\x_2-x_1&y_2-y_1&z_2-z_1\\x_3-x_1&y_3-y_1&z_3-z_1\end{array}\right] =0

Substitute the three points to get

\left[\begin{array}{ccc}x-1&y&z-2\\-1-1&1&-2-2\\0-1&0&0-2\end{array}\right] \\=0\\(x-1)(-2) -y(4-4)+(z-2)(1) =0\\-2x+z=0\\2x-z-=0

2x-z=0 is the equation of the plane.

4 0
4 years ago
Jeremiah works on computers and charges $12 per hour plus a one-time service fee of $4. If Jeremiah worked on a computer for 3 1
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$42 + $4 = $46 for charge.
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7 0
3 years ago
On a bicycle ride,Betty rode 7 miles in 2 hours. At the same rate of speed,how far could she ride in 8 hours?Please hurry
prohojiy [21]
D 28 miles you want to multiply by 4 so 7x4 =28
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3 years ago
Which statement best describes a solution to the system of equations 3x+Y=17 X+2y=49 A. It has no solution B. It has infinite so
andreev551 [17]

Answer:

  It has a single solution x=-3 y=26

Step-by-step explanation:

The ratios of coefficients of x and y are different, so the pair of equations has one solution. It is easy to tell the first offered solution (15, 17) does not satisfy the first equation, so that choice is eliminated.

Fortunately, the second offered solution, (x, y) = (-3, 26), satisfies both equations.

The equations have a single solution: (x, y) = (-3, 26).

8 0
4 years ago
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<span>They most likely used an experiment with patients randomly assigned to take the medicine or not take the medicine.</span>
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