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sattari [20]
3 years ago
14

A bag contains 1 gold marbles, 6 silver marbles, and 29 black marbles. Someone offers to play this game: You randomly select one

marble from the bag. If it is gold, you win $4. If it is silver, you win $2. If it is black, you lose $1. What is your expected value if you play this game?
Mathematics
2 answers:
pentagon [3]3 years ago
7 0

Answer:

the expected value is -$1

algol [13]3 years ago
4 0

Answer:

7$ it is

Step-by-step explanation:

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I need help on this can u plsssssss
Anestetic [448]

Inequality: 21d+25≤115

Jim can rent a car for maximum 4 days, therefore, he is not correct in his calculations.

Step-by-step explanation:

Given,

Per day rent = $21.00

Per mile rent = $0.10

Miles to be driven by Jim = 250

Cost of 250 miles = 250*0.10 = $25

Amount Jim can spend = $115.00

Let,

d represent the number of days.

Per day rent*number of days + cost of 250 miles ≤ Total amount to spend

21d+25≤115

Subtracting 25 from both sides

21d+25-25\leq 115-25\\21d\leq 90

Dividing both sides by 21

\frac{21d}{21}\leq \frac{90}{21}\\d\leq 4.28

Jim can rent a car for maximum 4 days, therefore, he is not correct in his calculations.

Keywords: inequality, division

Learn more about inequalities at:

  • brainly.com/question/9880052
  • brainly.com/question/9862781

#LearnwithBrainly

3 0
4 years ago
How many ways can Hannah give three of her eight T-shirts to her younger sister?
prisoha [69]
If Hannah gives her younger sister 3 shirts, it does not matter what order she hands them to her. No matter the order, it will still be the same group of 3 shirt. Since order is not important this problem can be solved using a combination.

Specifically we are asked to find 8C3 (sometimes called "8 choose 3"). This is a fraction. In the numerator we start with 8 and count down 3 numbers. In the denominator we start with 3 and count all the way down to 1. Thus we obtain,

\frac{(8)(7)(6)}{(3)(2)(1)}=(8)(7)=56
7 0
3 years ago
6 less than 2 times a number​
marysya [2.9K]

Answer:

2x - 6  is 6 less than twice a number or 2(x-3) in factored form.

Hope this helps!

Mark me brainliest if I'm right :)

4 0
3 years ago
What is 5 times 9 divided 5 add 40 subtract 100
Sladkaya [172]

Answer:

-51

Step-by-step explanation:

5 0
3 years ago
Is the expression 3(x+2) equivalent to 3x+6
Delvig [45]
Yes...

<span> 3(x+2)...using distributive property...

= 3x + 6</span>
6 0
3 years ago
Read 2 more answers
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