Mathematics: 5. what is the solution to the system of equations? {-x + 2y + z = 10 { z = 6 {3x - 2y + 2z = 8 a: (0, 2, -6) b: (0, 2, 6) c: (-1, 2, 6) d: (0, -2, 6)

5. what is the solution to the system of equations?

Ответ:

kaur16435

02.06.2020

B.

This can be done by plugging 6 in for z in the first and third equations. After doing so, you can solve for either of the other two variables and get an answer based on the substitution method.

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Ответ:

parosil

03.10.2021

Mathematics

45 km per hour

Step-by-step explanation:

We want to find the tricycle's speed in kilometers per hour.

Therefore, we must divide the kilometers traveled by the number of hours.

speed= kilometers / hours

The tricycle travels 180 kilometers in 4 hours.

speed= 180 km / 4 hrs

Divide 180 km by 4 hrs.

⇒ 180/4=45

speed= 45 km / hour

The tricycle's speed is 45 kilometers per hour.

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5. what is the solution to the system of equations? {-x + 2y + z = 10 { z = 6 {3x - 2y + 2z = 8 a: (0, 2, -6) b: (0, 2, 6) c: (-1, 2, 6) d: (0, -2, 6)

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