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damaskus [11]
3 years ago
10

Choose all of the following which lie on the graph of x + 2y - z = 8.

Mathematics
1 answer:
Hoochie [10]3 years ago
3 0
As an example, let's look at B:  x=1, y=2, z=0.

Evaluating the left side of the given expression in x, y and z, we get

<span>x + 2y - z = 8  =>  1 + 2(2) - 0 = 5, which does not equal  8.  So B is not a solution.  

Please check out the other possible solutions. Which set {x, y, z} makes the given equation true?

</span>
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Marysya12 [62]

Answer:

1. Opposite

2. angle-side-angle criterion

Step-by-step explanation:

Since ABCD is a parallelogram, the two pairs of <u>(opposite)</u> sides (AB¯ and CD¯, as well as AD¯ and BC¯) are congruent. Then, since ∠9 and ∠11 are vertical angles, it can be concluded that ∠9≅∠11. Since ABCD is a parallelogram, AB¯∥CD¯. Since ∠2 and ∠5 are alternate interior angles along these parallel lines, the Alternate Interior Angles Theorem allows that ∠2≅∠5. Since two angles of △AEB are congruent to two angles of △CED, the Third Angles Theorem supports that ∠8≅∠3. Therefore, using the <u>(angle-side-angle criterion)</u>, it can be stated that △AEB≅△CED. Then, applying the definition of congruent triangles, it can be stated that AE¯≅CE¯, which makes E the midpoint of AC¯. Use a similar argument to prove that △AED≅△CEB; then it can be concluded that E is also the midpoint of BD¯. Since the midpoint of both line segments is the same point, the segments bisect each other by definition. Match each number (1 and 2) with the word or phrase that correctly fills in the corresponding blank in the proof.

A parallelogram posses the following features:

   1. The opposite sides are parallel.

   2. The opposite sides are congruent.

   3. It has supplementary consecutive angles.

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7 0
4 years ago
what is the average speed of a train that covers 80 km in 1 hour, 200 km in 2 hours and 420 kn in 4 hours
omeli [17]

Answer:

95

Step-by-step explanation:

80+(200 divided by 2)+(420 divided by 4)=285

285 divided by 3=95

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3 years ago
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3 years ago
In p.
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The circumference by definition is given by:
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A measurement that is closest to the circumference of the parachute in feet is:
 
C = 100.48 feet
6 0
3 years ago
P(n)=485n-14065 find slope
11111nata11111 [884]

Answer:

the slope is 485

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The slope form of a line is y=mx+b, or in this case, p(n)=mn+b. The coefficient of n is 485, giving you the slope.

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