Answer:
The value is [tex] E(k) = \frac{68}{52}[/tex]
Step-by-step explanation:
From the question we are told that
The total number of cards is [tex]n = 52[/tex]
Let k represent the winnings and loss when any card is drawn
So k = $5 when a faced card is drawn
So k= $ 20 when an Ace card is drawn
So g = - $2 when any other card is drawn
Generally in a standard deck of card
The number of Ace is 4
The number of queen is 4
The number of jack is 4
Therefore the number off faced cards is
R = 4 + 4 + 4 = 12
Generally the number of other cards is
Y = n - R
=> Y = 52 - 12
=> Y = 36
Generally the probability of drawing a faced card is mathematically represented as
[tex]P(k = 5) = \frac{ 12}{52}[/tex]
Generally the probability of drawing a Ace card is mathematically represented as
[tex]P(k = 20) = \frac{ 20}{52}[/tex]
Generally the probability of drawing a other card is mathematically represented as
[tex]P(k = -2) = \frac{ 36}{52}[/tex]
Generally the expected profit from any one draw is mathematically represented as
[tex]E(k) = \sum k_i * P(K = k)[/tex]
=> [tex]E(k) = 5 * \frac{ 12}{52} + 20\frac{ 20}{52} + [- 2 * \frac{ 36}{52}][/tex]
=> [tex] E(k) = \frac{68}{52}[/tex]
What is the value of X
Answer:
5.25
Step-by-step explanation:
butterfly method
x 3
-- --
7 4
7(3)=4x
21=4x
/4 /4
x=5.25
EASY GEOMETRY**
IDENTIFY THE angle shown
Answer: D. Obtuse
Step-by-step explanation: It is greater than a 90 degree angle.
Complete the solution of the equation. Find the
value of y when x equals -14.
-2x - 3y = 49
Enter the correct answer.
Answer:
y = -7
Step-by-step explanation:
If x equals -14 then you would plug it in and the equation would be -2(-14)-3y=49
The new equation would be 28-3y=49
Then you would subtract 28 from both sides and get -3y=21
Lastly you would divide both sides by -3 and get y=-7
please answer
will mark as brainliest
Answer:
nine below zero
nine less than zero
the opposite of 9
Step-by-step explanation:
(brainliest plz)
Answer:
Nine below zeroNine less than zeroThe opposite of nineI hope this helps!
Write a triangle congruence statement for the two triangles
below
E
D
ht
B
с
F
Answer:
FtD
Step-by-step explanation:
What is the y-intercept? O (0, -5) O (0-2) O (0, 2) O (0, 4)
Answer:
(0,-5)
Step-by-step explanation:
the y-intercept is when the line passes through the y-axis
Answer:
(0,-5)
Step-by-step explanation:
the y-intercept is when the line passes through the y-axis
On a vacation, Linda's family traveled 495 miles at 55 mph.
What is the unit rate/slope in this example?
Answer:
500
Step-by-step explanation:
8
Triangle ABC is transformed to Triangle A′B′C′, as shown below: A coordinate grid is shown from negative 4 to 0 to 4 on both x- and y-axes. A triangle ABC has A at ordered pair negative 3, 4, B at ordered pair negative 4, 2, C at ordered pair negative 1, 1. A triangle A prime B prime C prime has A prime at ordered pair 3, 4, B prime at ordered pair 4, 2, C prime at ordered pair 1, 1. Which equation shows the correct relationship between the measures of the angles of the two triangles? (5 points)
Answer:
Option 4.
[tex]\angle BCA =\angle B' C'A'\\[/tex]
Step-by-step explanation:
By graphing these we see that these triangles are Similar which means that there corresponding angles measure is equal i-e all angles are equal and hence option 4 is the answer
Answer:
The measure of angle ABC = The measure of angle A prime B prime C prime
Step-by-step explanation:
7. Work out the gradient of the line y + 7x = 8
Is anyone able to help much appreciated
Answer:
[tex]gradient \: = - 7[/tex]
Step-by-step explanation:
[tex]y + 7x = 8 \\ y = - 7x + 8[/tex]
According to,
[tex]y = mx + c \\ [/tex]
m = gradient
So,
[tex]y = - 7x + 8[/tex]
[tex]m = - 7[/tex]
Answer:
-7
Step-by-step explanation:
equation=y+7x=8
y=-7x+8
the gradient is always the x co-efficient
therefore the gradient is -7
Please help me I will crown
Find the equation of the line that contains the points (6,3) and (9,4) Write the equation in the form y=mx+b HELP ASAP
Answer:
y = 1/3x + 1
Step-by-step explanation:
find the slope by using y2-y1/x2-x14-3/9-6
1/3. slope = 1/3 = m
2. plug the values into the equation to find y-int. You can use whichever point is given to you
I'll use (6,3)
y = mx + b
3 = 1/3(6)+b
1/3(6)=2
3 = 2 + b
3. subtract 2 from both sides and you get b
b = 1
So, the equation of the line would be
y = 1/3x + 1
Select three ratios for the given ratio 6/14
Answer:
3 to 7
9 to 21
12 to 28
Step-by-step explanation:
6/14 is also equal to 6 to 14 or 6:14
I need help asap please
1. SOLVE FOR X 3x + 2 = 2x + 9
O x = 9
O x = 7
O x = 5
X = 3
Answer:
x =7
Step-by-step explanation:
Answer:
x = 7
Step-by-step explanation:
Given
3x + 2 = 2x + 9 ( subtract 2x from both sides )
x + 2 = 9 ( subtract 2 from both sides )
x = 7
Josie makes fruit punch by mixing fruit juice and lemonade in the ratio 3:4. She needs to make 49 liters of punch for the party. How much of each ingredient does she need
She would need 21 liters of fruit juice and 28 liters of lemonade.
Answer:
juice = 21lemonade = 28
Step-by-step explanation:
given:
ratio of juice and lemonade = 3:4
She needs to make 49 liters of punch for the party.
find:
How much of each ingredient does she need
solution:
add the ratio 3 + 4 = 7
total punch divide by the total ratio
49 / 7 = 7 (coefficient)
juice 3 x 7 = 21
lemonade 4 x 7 = 28
total = 49
Can some please help me
Answer: (-1, -3)
Step-by-step explanation:
x: -2= (-3 + x)/2 y: 5 = (7 + y)/2
-4= -3 + x 10= 7 + y
-1 =x -3 = y
(-1,-3)
What is the expression [tex]x^2+14x+40[/tex] in factored form?
Answer:
b
Step-by-step explanation:
since x is squared, you would put that into both parenthesis, so you should have (x)(x) right now
then you need to find factors of 40 that add to 14
factors of 40: 40 and 1, 20, and 2, 4 and 10, 5 and 8
4 and 10 multiply to equal 40 and add to equal 14
put each factor into a parenthesis
so now you should have (x+10) (x+4)
side note: if the number 40 was negative then one of the factors would have to be negative, this would result in (x+10) (x-4) or (x-10) (x+4)
Which ordered pair is not a solution to this system?
x+y>3
x + 2y > 5
A (2,1)
B. (2,2)
C (2,3)
D. (2,4)
E. (2,5)
Answer:
A (2,1)
[tex]x + y > 3 \\ x + 2y > 5 \\ \\ a)2 + 1 > 3 \: wrong \\ 2 + 2(1) > 5 \: wrong \\ \\ [/tex]
So, right off the bat, you can tell that the ordered pair (2,1) is most definitely NOT the solution to this system.
heelppppppppppp pleaseee
Answer:
x = -1
Step-by-step explanation:
6 -8x = 6x -9x +11
Combine like terms
6 -8x = -3x+11
Add 8x to each side
6-8x +8x = -3x+8x +11
6 = 5x+11
Subtract 11 from each side
6-11 = 5x+11-11
-5 =5x
Divide each side by 5
-5/5 = 5x/5
-1 =x
Which expression is equivalent to the expression shown?
please help
Answer:
b) [tex]4a^{2} b^{2} c^3[\sqrt[3]{b} ]}[/tex]
Step-by-step explanation:
4. Solve 5x + 25 = 250 x = ?* Enter the number value only.
Answer: x = 5/49 ; 0.102041
Step-by-step explanation:
Subtract 5x on both sides. 25 = 245xDivide by 245 on both sides. x = 5/49. As a decimal, it is approximately 0.102041.There’s two fish in a tank, one of them turns to the other and says..?
Answer:
hi fishy bwotha
Step-by-step explanation:
Answer: "How the heck do you drive this thing!?"
Step-by-step explanation: because normally they would be in a fish tank, but here they are in a military tank.
Find the perimeter of the square in the coordinate plane below. Round your answer to two decimal places.
(-8) + (+12) what is the answer to this can someone please write it out clearly?
Answer:
4
Step-by-step explanation:
so here since -8 is smaller then 12 your basically subtracting. In simpler terms its basically just 12-8
Answer:
The answer is 4
Step-by-step explanation:
Since you have negative 8 when you add 12 it is like you are just adding 8 making the number 0 and then add the rest from the 12 which is 4
In each figure below find m ∠1 and m∠2, if a||b. Justify with reasons your solution.
b
Answer:
105* and 75*
Step-by-step explanation:
i need help someone give me this answer plz
Find the midpoint of the line segment with endpoints (1, 7) and (3, 3).
A) (2, 4)
B) (3, 4)
C) (2, 5)
D) (3, 5)
Joseph wants to find the side length of a square that has an area of 150 feet. Should his answer be rational or irrational? Why?
Answer:
The answer is irrational
Step-by-step explanation:
if 2x + y = 12 and x + 2y = -6, then find the value of 2x + 2y
Combine the expressions from parts B and C to give the pair of coordinates of any point after a reflection across the x-axis,
Answer:
For any initial point (x, y), the new point after a reflection across the x-axis is (x, -y).
*Edmentum answer*
Answer:
For any initial point (x, y), the new point after a reflection across the x-axis is (x, -y).
Step-by-step explanation:
edemtum answer
