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dybincka [34]
2 years ago
6

A bridge hand is made up of 13 cards from a deck of 52. Find the probability that a hand chosen at random contains at least 3 ni

nes.
Mathematics
1 answer:
vovikov84 [41]2 years ago
4 0
A deck of 52 hours has 4 nines.
P ( x ≥ 3 ) = ( 48 C 10 · 4 C 3 ) / ( 52 C 13 ) + ( 48 C 9 · 4 C 4 ) / ( 52 C 13 ) =
= 0.0412 + 0.588 = 0.1  
Answer:
The probability is 0.1 ( or 10%).
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A rectangular school banner has a length of 40 inches and a width of 24 inches. A sign is made that is similar to the school ban
e-lub [12.9K]

Answer:

The answer is 960

Step-by-step explanation:all you would have to do is multiply the lenth times width. 40x24=960  


4 0
3 years ago
If the line with the slope 5 that passes through the point (-1,3) intersects the x axis at a point, what are the coordinates of
Crazy boy [7]

Answer: (-8/5,0)

Step-by-step explanation: If the slope is 5, m = 5

For (-1,3) we have x₀= -1 and y₀ = 3, to find the line equation

y - y₀ = m(x - x₀)

y - 3 = 5(x - (-1))

y - 3 = 5(x + 1)

y - 3 = 5x + 5

y = 5x + 8

A P that intersects the x axis has y = 0

0 = 5x + 8

5x = -8

x = -8/5

P (-8/5,0)

7 0
3 years ago
If f(z)=m^z - n^z, and f(1)=2, f(2)=8. Find f(3).
Marina CMI [18]
If f(z)=m^z - n^z <span>and f(1)=2, f(2)=8
then
m -  n = 2 so m = n + 2 
m^2 - n^2 = 8

substitute </span>m = n + 2  into m^2 - n^2 = 8

so
m^2 - n^2 = 8
(n + 2)^2 - n^2 = 8
n^2 + 4n + 4 - n^2 = 8
4n = 4
  n = 1

m = n + 2 = 1 + 2 = 3

so f(z) = 3^z - 1^z

if z = 1 the f(1) = 3^1 - 1^1 = 2
if z = 2 the f(2) = 3^2 - 1^2 = 9 - 1 = 8
if z = 3 the f(3) = 3^3 - 1^2 = 27 - 1 = 26

answer
f(3) = 26

3 0
3 years ago
Help fast please geometry
frozen [14]

Answer:

3√6

Explanation:

explanation is in the image above

HOPE THIS HELPS PLEASE MARK ME BRAINIEST

6 0
2 years ago
Read 2 more answers
NEED HELP ASAP<br> NO LINKS AND NO JUST SAYING HI, PLEASE ANSWER LEGITIMATELY! THANK YOU!!!! &lt;3
Mekhanik [1.2K]

Answer:

x=42.5

Step-by-step explanation:

First, start by setting up the equation

these are both same side interior angles, so they both add up to 180

(3x+10) + x = 180

4x+10 =180

subtract both sides by 10

    -10    -10

4x=170

divide both sides by 4

x=42.5

6 0
2 years ago
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