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3 years ago

Hey some help please and thank.

Mathematics

1 answer:

tatyana61 [14]3 years ago

7 0

Think of how many there are. im not sure if you put these into ratios or not...

like for number 3 think of how many numbers 1-9 are multiples of three

1 2 3 4 5 6 7 8 9

and once you get that number you make it out of 9 because there were 9 numbers

Example

3:9 3/9

for questions one and two its out of 52 and if you don't know how many clubs and hearts are in a deck you can look it up and put it in a ratio with 52

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The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 256.3 and a standard deviation of

AnnyKZ [126]

Answer:

a) In the interval ( 55,9 ; 456,7 ) we will find 99,7 % of all values

b) In the interval ( 122,7 ; 389,9 ) we find 95,4 % of all values

Step-by-step explanation:

For a Normal distribution N (μ ; σ ) the Empirical rule establishes that the intervals:

( μ ± σ ) contains 68,3 % of all values

( μ ± 2σ ) contains 95,4 % of all values

( μ ± 3σ ) contains 99,7 % of all values

If N ( 256,3 ; 66,8 )

σ = 66,8 ⇒ 3*σ = 3 * 66,8 = 200,4

Then: 256,3 - 200,4 = 55,9

And 256,3 + 200,4 = 456,7

a) In the interval ( 55,9 ; 456,7 ) we will find 99,7 % of all values

b) 2*σ = 2 * 66,8 = 133,6

Then 256,3 - 133,6 = 122,7

And 256,3 + 133,6 = 389,90

Then in the interval ( 122,7 ; 389,9 ) we find 95,4 % of all values

4 0

2 years ago

HELP PLEASE BE QUICK

rewona [7]

Answer:

Radius is 2 centimeters

Step-by-step explanation:

<u>4π is the area of a circle</u>

<u>Area of a circle = πr^2</u>

4π / π = πr^2 / π

sqrt(4) = sqrt(r^2)

2 = r

Answer: Radius is 2 centimeters

4 0

3 years ago

A line contains the point (8,-5). If the slope of the line is write the equation of the line using point-slope form

inessss [21]

Answer:

$\bold{y+5=\frac57(x-8)}$

Step-by-step explanation:

$y-y_1=m(x-x_1)$ - point-slope form of Equation of the Line

$(8,-5)\ \ \implies x_1=8\,,\ y_1=-5\\\\m=\frac57\\\\equation:\\{}\qquad\qquad y-(-5)=\frac57(x-8)\\\\{}\qquad\qquad y+5=\frac57(x-8)$

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3 years ago

Based on the table, which best predicts the end behavior

omeli [17]

The function f(x) = -5x³ + 3x² + x - 9 is a cubic function with the form:

f(x) = ax³ + bx² + cx + d, where a = -5, dictates the end behavoir of the function.

Since a is negative, then as x → -∞, y → ∞, and as x → ∞, y → -∞.

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1 year ago

The function s(V) = 3/v describes the side length, in units, of a cube with a volume of V cubic units. Jason wants to build a

torisob [31]

Answer:16

Step-by-step explanation:

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3 years ago