a person pays $25 to randomly select one of 5 envelopes containing a different check amount. determine the expected value if the check amounts are $0, $20, $30, $35, and $75

Answer:

f(x)=9(x+3)^2+2

Step-by-step explanation:

f(x)=9x^2 --> a=9

f(x)=a(x-h)^2+k -->f(x)=9(x-h)^2+k

vertex= (-3,2) --> h=-3 and k=2--> making it f(x)=9(x+3)^2+2

Answer:

24

Step-by-step explanation:

its just the opposite

Answer: 6/14 and 42/99

Step-by-step explanation:

Answer:

I.  B. P = – + 40x

II.  1.3

hope this helps! :o)

Step-by-step explanation:

Answer:

1.3 mil

Step-by-step explanation:

Answer:

(2,4) is the correct answer

Step-by-step explanation:

In order to solve two inequalities, we have to graph the two inequalities on the graph. We have used the online graphing calculator "Desmos' for this purpose.

When two inequalities are graphed, the area that is common in both inequalities is the solution of the system.

We have to observe the graph to check if given points are in solution set of the system.

In the given points, (2,4) lie in the solution set as indicated in the picture.

Hence,

(2,4) is the correct answer

Answer:

Plug in 1ft/12in

This will give you 36 ft

Step-by-step explanation:

After plugging in, multiply across and simplify/divide and you get your answer

Answer:

2 37/40

Step-by-step explanation:

Answer:

a=15

Step-by-step explanation:

2a-10=20

2a=30

a=15

can i have one brainliest plz

Answer:

a = 15

Step-by-step explanation:

I assumed you were trying to solve for A :)

3a - 10 = a + 20

1. Combine like terms (A's on side, numbers on the other).

3a - 10 = a + 20

-a           -a

-----------------------

2a - 10 = 20

     +10   +10

------------------------

2a = 30

Now that all of your like terms are combined, work to isolate A. The only way to do this is to divide by 2 on both sides of the equal sign.

[tex]\frac{2a}{2} = \frac{30}{2}[/tex]

This leaves you with a = 15, which is your answer if you are told to solve for A

I hope this helps!

Answer:

The value of the new volume 'x' would be equal to 40.5 cm³.

Step-by-step explanation:

Given

We can determine the volume of the original prism by multiplying the area of the base by the height,

                              volume = (3 cm²)(4 cm) = 12 cm³

Dilation by a factor of 3/2 means that the dimensions of the new prism is 3/2 times that of the original object.

let 'x' be the volume of the new solid,

[tex]\frac{x}{12}=\left(\frac{3}{2}\right)^3[/tex]

[tex]\frac{x}{12}=\frac{27}{8}[/tex]

Multiply both sides by 12

[tex]\frac{12x}{12}=\frac{27\cdot \:12}{8}[/tex]

[tex]x=\frac{81}{2}[/tex]

[tex]x=40.5[/tex] cm³

Therefore, the value of the new volume 'x' would be equal to 40.5 cm³.

Answer:

x1 = -1, and y1 = -2

Step-by-step explanation:

Step-by-step explanation: The equation of a line in point-slope form. is the equation of the line containing point (x1, y1) and having slope, m. The given point of the perpendicular bisector is (-1, -2), so in this case, x1 = -1, and y1 = -2

Answer:

24 divided by 3.12=7.69

Step-by-step explanation:

Answer:

x + 2y = 8

Step-by-step explanation:

Answer:

20%

Step-by-step explanation:

The percentage of students who chose math as their favorite subject 20%

The percentage is defined as representing any number with respect to 100. It is denoted by the sign %. The percentage stands for "out of 100." Imagine any measurement or object being divided into 100 equal bits.

Given that there are 450 students at Central Middle School. In a survey, 90 of the student chose math as their favorite subject.

The percentage will be calculated as:-

Percentage = ( 90 / 450 ) x 100

Percentage = 0.2 x 100

Percentage = 20%

The percentage will be 20%.

To know more about percentages follow

https://brainly.com/question/24304697

#SPJ2

Answer:

B: No, because -1/4 is to the right of -3/4

Step-by-step explanation:

Just did the question

Answer:

its b

Step-by-step explanation:

got it right

Hope this helps

Answer:

C: She used GF=2BG, but the correct statement is BG=2GF

Step-by-step explanation:

Hope this helps, have a marvelous day!!!!!

Answer:

c

Step-by-step explanation:

Answer:

1. m = -3 b = 2

2. m = 1/2 b = -1

3. m = -1 b = 79

4. m = 2 b = -2

5. y = -4x + 3

Step-by-step explanation:

1. the equation y=mx + b is used in number 1. m = slope and b = y intercept. so, because -3 is in the m spot, it is the slope, and because 2 is in the b spot, it is the y intercept.

2. apply the same concept as number 1. 1/2 is in the m spot, so it is the slope, and -1 is in the b spot, so it is the y intercept

3. To know the slope of the graph, you do rise/run. meaning, from one point on the graph, count how many times you go down to get to the next points, and then how many times you go over to get to the point. So, the slope of this line is -2/2, which is equal to -1. So, m = -1. To get the y intercept, take a pair of points from the graph (for example, (3,76)) and take the slope, and fill those in to the y = mx + b equation, and then solve for b. so, you get 76 = -1(3) + b. then do -1 times 3 and get -3. add 3 to both sides and you get b = 79.

4. apply the same concept on number 4 as you did number 3. Find rise/run, and you get 2/1, so m = 2. then take a point from the line (like point (0,-2)) and and the slope and fill it in to  y = mx + b. you get -2 = -2(0) + b. so, b = -2.

5. simply fill in the information into the y = mx + b equation. remember, m is the slope, and b is the y intercept. so, you get y = -4x + 3

Answer:

22.2653 or 22.27

Step-by-step explanation:

hope this helps

Answer: 22.265

Step-by-step explanation:  4.201x5.3 = 22.265

Answer:

0

Step-by-step explanation:

-14+22=8

8+-16=-8

-8+8=0

Answer:

0

Step-by-step explanation:

(-14) + 22 + 8 + (-16)

0

So 0is the answer

Answer:

(A) 1.00000000

(B) 0.83333333

(C) 0.66666667

(D) 0.50000000

Step-by-step explanation:

RULE OF THE GAME:

If 6 spots are marked, a player wins if 4 or more of their spots are among the 6.

QUESTION:

Find the probabilities of having the following numbers of winning spots out of 6.

(A) 6 winning spots

6/6 = 1   In 8 decimal places, 1.00000000

(B) 5 winning spots

5/6 = 0.83333333

(C) 4 winning spots

4/6 = 0.66666667

(D) 3 winning spots

3/6 = 1/2 = 0.50000000

The outcome probability will be:

(a) 1.00000000

(b) 0.83333333

(c) 0.66666667

(d) 0.50000000

According to the question,

Total spots = 6

Selected spots = 4 or more

(a) Here are 6 winning spots, then

= [tex]\frac{6}{6}[/tex]

= 1 or,

1.00000000

(b) Here are 5 winning spots, then

= [tex]\frac{5}{6}[/tex] or,

= 0.83333333

(c) Here are 4 winning spots, then

= [tex]\frac{4}{6}[/tex] or,

= 0.66666667

(d) Here are 3 winning spots, then

= [tex]\frac{3}{6}[/tex]

= [tex]\frac{1}{2}[/tex] or,

= 0.50000000

Thus the response above is correct.

Find out more information about probability here:

https://brainly.com/question/25870256

Answer: undefined

Step-by-step explanation:

(-5-3)/(2-2) = -8/0 so the slope is undefined

Answer:

91.

Step-by-step explanation:

The least number will be a multiple of 7 while the number - 1 will be a multiple of 2,3 and 5.

2*3*5 = 30  but 31 is not a multiple of 7.

2*2*3*5 = 60 but 61  is not divisible by 7.

2*3*3*5 = 90 and 91 is divisible by 7.

Answer:

82.5

Step-by-step explanation:

divide 330÷4= 82.5

Answer:

96

Step-by-step explanation:

1 sticker pack has 28 stickers

3(28) = 84

84+12

96

Answer:

96

Step-by-step explanation:

28 × 3 = 84 + 12 = 96 I think, I'm not sure

Step-by-step explanation:

0 < X < 24

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