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Reptile [31]
2 years ago
12

The product of nine and the sum of a number z and four

Mathematics
1 answer:
Kobotan [32]2 years ago
3 0

This equation would be written as:

9(z+4)

you distribute the 9:

9z+36

I don't really know what your asking for, but there is the equation and the simplified equation.

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GEOMETRY!!! 15 PTSSSSS
ss7ja [257]

Answer:

23) option c

    JL ≈ 9.3

25) option c

      y ≈ 9.6

Step-by-step explanation:

<h3>25)</h3>

Given in the question that,

cos(21°) = 9 / y

y = 9/cos(21°)

y = 9.64

y ≈ 9.6(nearest tenth)

<h3>23)</h3>

Given in the question that the hypotenuse of right angle triangle = 12

To find,

height of the right angle triangle

angle k = 39°

so by using trigonometry identity

cos(39) = opp/hypo

cos(39) = JL / KL

JL = cos(39)(12)

JL = 9.32

JL ≈ 9.3

<h3 />
4 0
3 years ago
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A random sample of 10 subjects have weights with a standard deviation of 9 8753 kg What is the variance of their weights? Be sur
hammer [34]

Answer: The variance of their weights = 9,752,155,009 kg.

Step-by-step explanation:

  • The variance is the square of the standard deviation . it measures the spread between data values in a data set.

So if standard deviation of 10 subjects = 98753 kg

Then, variance = (9 8753 )^2\ kg=9,752,155,009\ kg

Hence, the variance of their weights = 9,752,155,009 kg.

8 0
3 years ago
The square of a number is 12 less than 7 times the number. What is the number? –4 or –3 –4 or 3 –3 or 4 3 or 4
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Answer:

Answer: D (3 or 4)

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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