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Mnenie [13.5K]
3 years ago
5

The low temperatures for a week in winter were -2° F, -15° F, -7° F, 1° F, -4° F, 5° F, 8° F. What was the average low

Mathematics
1 answer:
Novay_Z [31]3 years ago
3 0

Answer: -2 F

Step-by-step explanation:

To find the average, or <em>mean, </em>of a data set, you must first combine all of the values in the set. Since some of these values are negative, it seems more difficult to solve. But it isn't. To find the mean of any data sets, you can find the absolute value of each numerical value. If you combine these regularly, it would be -15, but that is incorrect. The answer is -2 because some of the values may be negative, but you can find the answer easily. Just remember: To find the mean of data sets with negative values, you can find their absolute values, and solve from there. If this does not work for you, then find another solution. But the correct answer is -2 F.

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Last PreCalc Question, Need help with writing piecewise functions with graphs. Giving brainliest!
LekaFEV [45]

The piece-wise linear functions can be written as follows:

  • f(x) = x, x \leq -2.
  • f(x) = -x - 7, -2 < x \leq 1.
  • f(x) = 2x - 9, x > 1.

<h3>What is a linear function?</h3>

A linear function is modeled by:

y = mx + b

In which:

  • m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

For x equal or less than -2, the line passes through (-3,-3) and (-2,-2), hence the rule is:

f(x) = x, x \leq -2.

For x greater than -2 up to 1, the y-intercept is of -7, and the line also passes through (1,-8), hence the rule is:

f(x) = -x - 7, -2 < x \leq 1.

For x greater than 1, the function goes through (2,-5) and (3,-3), hence the slope is:

m = (-3 - (-5))(3 - 2) = 2.

The rule is:

y = 2x + b.

When x = 2, y = -5, hence:

-5 = 2(2) + b

b = -9.

Hence:

f(x) = 2x - 9, x > 1.

More can be learned about linear functions at brainly.com/question/24808124

#SPJ1

5 0
2 years ago
I need the product of a^4xa^6
emmainna [20.7K]
A^4 * a^6

exponent rule : x^y * x^z = x^(y + z)

so, a^4 * a^6 = a^(4 + 6) = a^10
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3 years ago
Find the pattern. fill in the blanks. 251,351
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Answer:

451, 551, 651, 751, 851, 951, 1051, 1151,

Step-by-step explanation:

you're adding 1 each time you progress through the pattern. Btw pls rate me BRAINLYIEST im in 8th grade.

6 0
3 years ago
What is 622,119 rounded to the nearest hundred?
adell [148]

Answer:

The answer is 622,100

Step-by-step explanation:

The answer is 622,100 because the 1 in the tens place is smaller then a 5 so it gets rounded down to 0.

So, the answer is 622,100

Hope this helps! :)

6 0
2 years ago
727w8w7eueurururuititoy​
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Answer:

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Step-by-step explanation:

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