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3 years ago

A group of three people are selected at random, what is the probability that all the three people have different birthdays.

Mathematics

1 answer:

Tanya [424]3 years ago

5 0

Answer:

1:1

Step-by-step explanation:

this is because they are selected at random 3/3=1

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F(x)= x2 + 6x +15 What’s the vertex

solniwko [45]

Answer (-3,6)
#
f(x)=x ² +6x+15
=(x ² +6x+9)+6
=(x+3) ²+6
the vertex:(-3,6)

3 0

3 years ago

Read 2 more answers

Paul polled his classmates about their favorite color. He drew this circle graph to show his data.

ss7ja [257]

Answer:

he most popular color is .

blue

The least popular color is .

purple

There are 30 students in Paul’s class.

That means that students voted for green. 3

Step-by-step explanation:

its right ,i did it.

4 0

3 years ago

Someone help me with this question please

telo118 [61]

Answer:

b = square root of 44 or approx. 6.6

Step-by-step explanation:

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3 years ago

2n^3-3n^2+2n=o answer needed urgently pls

Kazeer [188]

$n = 0$

Step-by-step explanation:

<h2>Factor the expression</h2>

$2n ^ 3 - 3n ^ 2 + 2n = 0$

<h2>Separate into possible cases</h2>

$n(2n ^ 2 - 3n + 2) = 0$

<h2>Solve the equation</h2>

$n = 0[tex]n = 0 \: \: \: \: \: \: \: \: [tex]n = 0 \: \: \: \: \: \: \: \: 2n ^ 2 - 3n + 2 = 0$

<h2>Find the union</h2>

$n = 0[tex]n = 0 \: \: \: \: \: \: [tex]n = 0 \: \: \: \: \: \: n = R$

<h2>there for </h2>

$n = 0$

hope it help

#carry on learning

3 0

3 years ago

20 points if you can answer this! :D

andrew-mc [135]

Answer:

The answer is Ari, Beth, Cindy

Explanation

Ari

2¾ miles is 2.75 miles
speed of 2½ miles per hour is 2.5 mi/h

DISTANCE = SPEED × TIME

t = d/s

= 2.75/2.5

= 1.1hr

= 66mins

Beth

1¾ miles is 1.75 miles
speed of 1¼ miles per hour is 1.25 mi/h

t = d/s

= 1.75/1.25

=1.4hr

=84mins

Cindy

1hr 21mins is 81mins

(Correct me if i am wrong)

5 0

3 years ago