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Georgia [21]
3 years ago
6

Given: 3x < -6.

Mathematics
2 answers:
nexus9112 [7]3 years ago
5 0

A.  {x | x < -2}

I think sorry if I'm wrong.

In-s [12.5K]3 years ago
3 0
3x < -6
x < -6/3
x < -2
Therefore, the solution set is {x | x < -2}.
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Hepl...<br>I will mark as brainliest​
Law Incorporation [45]

Answer:

a) -9, -5, 2, 3

b) 1.66, 0,33, -1.55, -3.25

c) -4.01, -3.35, 0.35, 0.81

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
In a lottery game, a player picks six numbers from 1 to 21. If the player matches all six numbers, they win 40,000 dollars. Othe
Darina [25.2K]

Answer:

The expected value of this game is -$0.26.

Step-by-step explanation:

Expected value:

Each possible earning/loss multiplied by it's probability.

Probability:

Number of desired outcomes divided by the number of total outcomes.

In this question, the order in which the numbers are chosen is not important. So we use the combinations formula to solve.

Combinations formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

Probability of winning:

Desired outcomes:

The 6 correct numbers, so D = 6

Total outcomes:

6 numbers from a set of 21. So

T = C_{21,6} = \frac{21!}{6!15!} = 54264

Probability:

p = \frac{1}{54265}

Expected value

\frac{1}{54265} probability of earning 40,000.

\frac{54264}{54265} probability of losing 1. So

E = \frac{40,000}{54265} - \frac{54264}{54265} = -0.26

The expected value of this game is -$0.26.

7 0
3 years ago
. <br><br><br> Solve the equation. <br><br> 2/3 x – 6 = 9
Allisa [31]
Hey there!

Okay let's get cracking :D

The equation is....  (2x/3) - 6 = 9

2x/3 = 15
2x = 45
<u>x = 22.5</u><u />    <----- And that is your answer!

I hope it helped! 

<u>Please vote for me as Brainliest if there is a second answer!</u>
4 0
3 years ago
Read 2 more answers
HELP ME WITH MY LAST PROBLEM PLEASE!!!! I REALLY NEED HELP!! I DON"T KNOW HOW TO DO MY LAST PROBLEM!!!! PLEASE HELP ME!!!
kompoz [17]
Dude wheres the question, you have to ask legistic questions this is a school website not a circus

7 0
3 years ago
The cost of a lack has increased by 30% to £65. Work out the original price
Sveta_85 [38]
Cost of lack increased by 30%

new cost of lack will be = 100% + 30% = 130%

We are given that new cost = £65

Thus 130% of original cost = 65

100% of original cost = 65 × 100/130 = £50

Thus original price was £50
7 0
3 years ago
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