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loris [4]
3 years ago
14

−4x − 5y − z = 18 −2x − 5y − 2z = 12 −2x + 5y + 2z = 4

Mathematics
1 answer:
MrRissso [65]3 years ago
6 0

Answer: (x,y,z) = (-4,0,-2)

Step-by-step explanation:

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2 years ago
Simplify 7m - 11n - n + 5m.
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Answer:

The simplified form of the given expression is 12(m -n).

Step-by-step explanation:

The given expression is

7m - 11n - n + 5m

We need to simplify the given expression.

Rearrange the terms according to the variables.

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On combining like terms, we get

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(12m)+( -12n)

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3 years ago
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Step-by-step explanation:

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3 years ago
Brainliest for best joke
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Step-by-step explanation:

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3 years ago
Read 2 more answers
4.
statuscvo [17]

Part A)

His sample only involves days during the summer (if Devin is in the northern hemisphere), which would mean that the high temperatures he'll record are likely to be higher than the average. Therefore, the sample mean he computes does not represent the average high temperature for the whole year.

----------------------------------------

Part B)

To correct his mistake, he needs to sample every day of the year. Or he could sample a few days of each month (say the first ten days of each month). That way the entire year is better represented. The other seasons of spring, fall and winter are included now.

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