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icang [17]
3 years ago
7

Can someone please help me with this question

Mathematics
2 answers:
Elan Coil [88]3 years ago
6 0

Answer: i think its the second

Step-by-step explanation:

IrinaK [193]3 years ago
5 0
The answer is d of u don’t believe me then substitute it back in the problem
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A card is drawn at random from a standard deck of playing cards (no jokers). If the card is a spade, the player wins $7; if it i
Akimi4 [234]

The expected value of the game is the mean value of the game

The expected value of the game is $1

<h3>How to determine the expected value?</h3>

There are 13 spades in a deck of card of 52

So, the probability of selecting a spade is:

P(Spade) = 13/52

Simplify

P(Spade) = 1/4

Winning = $7

The probability of not selecting a spade is:

P(Not spade) = 1 - 1/4

Simplify

P(Not spade) = 3/4

Lose = $1

The expected value of the game is:

E(x) = \sum x * P(x)

This gives

E(x) = \frac 14 * 7 - 1 * \frac34

Simplify

E(x) = \frac 74 - \frac34

Evaluate

E(x) = 1

Hence, the expected value of the game is $1

Read more about expected values at:

brainly.com/question/15858152

8 0
2 years ago
Plz help me quick.....................................................
charle [14.2K]

Answer:

-2

Step-by-step explanation:

The equation is -12/c=6

by solving for c you get,

-12/c=6

Then multiply both sides by the LCM c to get, -12=6c

Divide both sides by 6 to get,

-12/6=6c/6

-2=c

Verification:

-12/-2=6 since when a negative number divides a negative number the answer is a positive value

7 0
3 years ago
A suit that sells for $300 in on sale of $240. Find the discount rate.
Gemiola [76]

Answer:

20% discount

Step-by-step explanation:

300 - 240 = 60

60 / 300 = 0.20

0.20 × 100 = 20

3 0
2 years ago
The side lengths of a right triangle are 18 cm, 24 cm, and 30 cm. You are asked to find the area of the triangle by using A = 1/
vekshin1

Answer:

1. Use the Adjacent and opposite side (Ignore the Hypotenuse)

Or use HERO'S FORMULA based on the information given

2. Area = 216cm^2

Step-by-step explanation:

There are three to four ways we can go about finding the area of a triangle. And a these would be dependent on the information given about the triangle.

From the question, you said the three side lengths are given. In such case, we employ the HERO FORMULA.

HERO FORMULA:

Area = √ s(s-a)(s-b)(s-c)

where s = 1/2(a + b + c)

a, b, c are the three sides

But since the question insisted that we use 1/2* base * height. Let's use our know of right angle to dissolve that.

A right angle triangle has three sides. The longest is always the Hypotenuse.

Let's take it this way.

Hypotenuse = 30cm

Opposite= 18cm

Adjacent = 24cm

Area = 1/2 * base * height

Area = 1/2 * 18 * 24

Area = 1/2 * 432

Area = 216cm^2

We ignored the longest side, (the Hypotenuse)

6 0
3 years ago
60% of all adults ages 35-44 drank coffee in the last year and 50% of all adults drank coffee. how much more likely are adults a
romanna [79]
10% more likely

You subtract 50 from 60 to get 10
4 0
3 years ago
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