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prohojiy [21]
3 years ago
14

Let X denote the total snowfall in the Twin Cities in December of a given year, measured in centimeters. The five-number summary

for X is given by:Min. Q1 Median Q3 Max.0.0 8.4 17.4 30.9 85.3What is the most likely value for the mean of X?a) 15.2b) 21.9c) 53.9d) 4.9
Mathematics
1 answer:
Gre4nikov [31]3 years ago
3 0

Answer:

Concept: Caclulating Standard Variables

  1. We have a five number summary which is more than enough information to calculate our mean.
  2. The mean is the sum of all the numbers divided by the nth number of numbers.
  3. Note that we can only find a rough estimation not the EXACT value
  4. We do (min +max + 2(Q1+median+Q3))/8
  5. Now let's plug in our values!
  6. (0+85.3+2(8.4+17.4+30.9))/8
  7. Which gives us option B
  8. Hope this helps, give brainlist

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Lines d, e, and f are parallel. That means they have the same slope. Each of these lines has a slope of −3. Enter numbers to com
Sloan [31]

Answer:

Line d : y = -3x - 3

Line e : y = -3x - 2

Line f  : y= -3x + 2

Step-by-step explanation:

Given that,

The slope of each line is -3.

Now,

We know that,

Equation of line is represented by y = mx + c

where m is the slope and c is the y-intercept.

Now,

Given that,

Line d goes through (0, - 3) and (- 1, 0).

So,

y-intercept of Line d is -3

∴ we get

Equation of Line d is : y = -3x -3

Now,

Given that,

Line e goes through (-1, 2) and (0, -2).

So,

y-intercept of Line e is -2

∴ we get

Equation of Line e is : y = -3x - 2

Now,

Given that,

Line f goes through (0, 2) and (1, -1).

So,

y-intercept of Line e is 2

∴ we get

Equation of Line f is : y = -3x + 2

6 0
3 years ago
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6 0
3 years ago
Which expressions are polynomials?
igor_vitrenko [27]

Option A: z + 1

Option B: 6 + w

Option D: 2 x^{4}-y

Solution:

Let us first define the polynomial.

A polynomial can have constants, variables, exponents and fractional coefficients.

A polynomial cannot have negative exponents, fractional exponents and never divided by a variable.

<u>To find which expressions are polynomial:</u>

Option A: z + 1

By the definition, z + 1 is a polynomial.

It is polynomial.

Option B: 6 + w

By the definition, 6 + w is a polynomial.

It is polynomial.

Option C: y^{2}-\sqrt[3]{y}+4

y^{2}-\sqrt[3]{y}+4=y^{2}-{y}^{1/3}+4

Here, y have fractional exponent.

So, it is not a polynomial.

Option D: 2 x^{4}-y

By the definition, 2 x^{4}-y is a polynomial.

It is polynomial.

Hence z + 1, 6 +w and 2 x^{4}-y are polynomials.

6 0
4 years ago
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