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Ierofanga [76]
3 years ago
14

Please show me how to work this out

Mathematics
1 answer:
4vir4ik [10]3 years ago
3 0

Answer:

f(x) = -4x + 12

Step-by-step explanation:

y - 2x = -6x + 12

+2x        +2x

f(x) = -4x + 12

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Estimate the measure of the angle shown below.<br><br><br><br> 25°<br> 45°<br> 85°<br> 135°
sergiy2304 [10]

Answer:

45 degrees

Step-by-step explanation:

That looks about half a right angle

A right angle is 90 degrees

90/2 = 45

4 0
2 years ago
Read 2 more answers
Calculate the range, population variance, and population standard deviation for the following data set. If necessary, round to o
Roman55 [17]

Answer:

Range = 11-2=9

\mu = \frac{2+3+4+5+6+7+8+9+10+11}{10}=6.5

\sigma^2 =8.25 \approx 8.3

\sigma = \sqrt{8.25}= 2.87 \approx 2.9

Step-by-step explanation:

Assuming this question: "Calculate the range, population variance, and population standard deviation for the following data set. If necessary, round to one more decimal place than the largest number of decimal places given in the data. 2,3,4,5,6,7,8,9,10,11 "

Solution to the problem

The range is defined as Range = Max -Min and if we replace we got:

Range = 11-2=9

Now we can calculate the population mean with this formula:

\mu =\frac{\sum_{i=1}^n X_i}{N}

And if we replace we got:

\mu = \frac{2+3+4+5+6+7+8+9+10+11}{10}=6.5

The population variance is given by:

\sigma^2 = \frac{\sum_{i=1}^n (X_i -\mu)^2}{N}

And after replace we got: \sigma^2 =8.25 \approx 8.3

And the population standard deviation would be just the square root of the variance and we got:

\sigma = \sqrt{8.25}= 2.87 \approx 2.9

4 0
4 years ago
Write 0.4 as a fraction.
ICE Princess25 [194]
I don't see the answer choice here that 0.4 should be ,which is 4/10,once reduced by dividing both 4 and 10 by 2 ,you would get an answer of 2/5???Are you sure these choices are correct?
3 0
3 years ago
If A =
skad [1K]

9514 1404 393

Answer:

  see below

Step-by-step explanation:

Carry out the math element by element. For example, ...

  c11 = -7a11 +3b11

  c11 = -7(8) +3(5) = -41

_____

<em>Additional comment</em>

Matrix operations like this one are easily handled by all spreadsheets and most graphing calculators. Some scientific calculators support matrix operations as well.

3 0
3 years ago
Please Find 85% of 25
astra-53 [7]

Answer:

21.25

Step-by-step explanation:

First divide 85 by 100 and again multiply by 25.

7 0
3 years ago
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