alana and two of her friends evenly split the cost of a meal. each person owes $14.68.

how much was the entire cost

Answer:

1.563

Step-by-step explanation:

Given :

Probability of head, p = 0.64

Number of flips it would take for tail to appear first :

Treatting the question as a geometric function :

Using the relation :

1 / p

Expected number of flips until first tail :

1 / P = 1/ 0.64 = 1.5625

E(x) = expected number of flips until first tail = 1.563

Answer:

V= 201.1

Step-by-step explanation:

Answer:

It is the first graph to the left

Step-by-step explanation:

because basically it is saying that it is -1/-2 rise over run

Answer: x=13,y=39

Step-by-step explanation: y=3x,x+y=52

x+3x=52

4x=52

x=52/4

x=13

y=3(13)

y=39

Answer:

The dimension of box=[tex]2ft\times 2ft\times 1ft[/tex]

Step-by-step explanation:

We are given that

Volume of box=4 cubic feet

Let x be the side of square base and h be the height of box

Volume of box=[tex]lbh=x^2h[/tex]

[tex]4=x^2h[/tex]

[tex]h=\frac{4}{x^2}[/tex]

Now, surface area of box,A=[tex]x^2+4xh[/tex]

[tex]A=x^2+4x(\frac{4}{x^2})=x^2+\frac{16}{x}[/tex]

[tex]\frac{dA}{dx}=2x-\frac{16}{x^2}[/tex]

[tex]\frac{dA}{dx}=0[/tex]

[tex]2x-\frac{16}{x^2}=0[/tex]

[tex]2x=\frac{16}{x^2}[/tex]

[tex]x^3=8[/tex]

[tex]x=2[/tex]

[tex]\frac{d^2A}{dx^2}=2+\frac{32}{x^3}[/tex]

Substitute x=2

[tex]\frac{d^2A}{dx^2}=2+\frac{32}{2^3}=2+4=6>0[/tex]

Hence, the area of box is minimum at x=2

Therefore, side of square base,x=2 ft

Height of box,h=[tex]\frac{4}{2^2}=1 ft[/tex]

Hence, the dimension of box=[tex]2ft\times 2ft\times 1ft[/tex]

Answer:

A y=2x + 3

Step-by-step explanation:

Answer:

The answer is A. (y = 2x + 3)

Step-by-step explanation:

Since its talking about $3 plus $2 per dog it would make sense to pick

y = 2x + 3 because 2x represents the number of dogs and how it costs $2 per dog while the 3 represents how it also cost $3 plus the $2.

Answer:

The angle of elevation from the base to the top of the mountain is 30°.

Step-by-step explanation:

Given: Vertical height of mountain is 650 feet and the distance from the top of the mountain to the base is 1300 feet.

To find: The angle of elevation from the base to the top of the mountain.

Let AB be the height of mountain and BC be the base.

Then, according to question, AB=650 feet and AC=1300 feet.

Let ∠ACB=[tex]\Theta[/tex].

Then, in ΔABC,

[tex]sin\Theta=\frac{AB}{AC}[/tex]

⇒[tex]sin\Theta=\frac{650}{1300}[/tex]

⇒[tex]sin\Theta=\frac{1}{2}[/tex]

⇒[tex]\Theta=30[/tex]°

Hence, the angle of elevation from the base to the top of the mountain is 30°.

Step-by-step explanation:

(1 + 1/2)(1 + 1/3)(1+ 1/4)...(1 + 1/n)

= (3/2)(4/3)(5/4)...[(n+1)/n]

= 0.5(n+1).

Answer:

0.5(n+1)

Step-by-step explanation:

(1 + 1/2)(1 + 1/3)(1+ 1/4)...(1 + 1/n)

= (3/2)(4/3)(5/4)...[(n+1)/n]

= 0.5(n+1).

Answer:

12(x) + 20

Step-by-step explanation:

x represents the amont of dogs and the +20 is the flat fee.        

Answer:

its C) 14 + 77 = 7(2 + 11)

Step-by-step explanation:

because d is associative property, a is addition, B is commutative property and ONLY c showed distributive property

hope it helps :)

Answer:

0

257/20

-1/4

Step-by-step explanation:

these are the answers

Answer:

A machine has 12 identical components which function independently. The probability that a component will fail is 0.2. The machine will stop working if more than three components fail. Find the probability that the machine will stop working. A) 0.073 B) 0.795 C) 0.867 D)0.205

Answer:

x = 4

Step-by-step explanation:

5x - 3 + x = 21

6x - 3 = 21

6x = 24

x = 4

Answer:

B

Step-by-step explanation:

Answer:

182 boys

Step-by-step explanation:

Please let me know if you want me to add an explanation as to why this is the answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)

Answer:

-168

Step-by-step explanation:

14(5−11)(2)

=(14)(−6)(2)

=(−84)(2)

=−168

Plug the number for the x value and then solve the equation.

Answer:

Beautiful

Step-by-step explanation:

love them

.....

Answer:

5.1 :)

Step-by-step explanation:

Answer:

uoyhhgvooihyjug

Step-by-step explanation:

uyfiuyf

Step-by-step explanation:

I can only answer part 2 of your question, "If we multiply two positive numbers, is the result positive or negative?". if you multiply 2 positive numbers your answer would be positive.

If we multiply two positive numbers, then the result is also positive.

Multiplication is the mathematical operation that is used to determine the product of two or more numbers. If an event can occur in m different ways and if following it, a second event can occur in n different ways, then the two events in succession can occur in m × n different ways.

Given that If a car is traveling east when it passes the camera, then;

the position be positive 60 seconds after it passes the camera.

Therefore, If we multiply two positive numbers, then the result is also positive.

Learn more about multiplications;

https://brainly.com/question/14059007

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The smallest number by which 2068 must be multiplied to make perfect square is 1080

A perfect square is a number system that can be expressed as the

square of a given number from the same system.

We have to find the smallest number by which 2068 must be multiplied to make perfect square.

Then, Let the number be 1080 .

So,

2068 x 1080 = 2,233,440

2,233,440 = perfect square

Learn more about perfect square;

https://brainly.com/question/385286

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Answer:

25 * 30= x

x= total number of candies

Answer:

C. 5

‎‎‎‎  ‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎

Answer:

[tex]y=\frac{-1}{2}x +3[/tex]

Step-by-step explanation:

Take any two points from the graph

(2 , 0) ; (0 , -4)

Slope = [tex]\frac{-4-0}{0-2}\\\\[/tex]

                   [tex]= \frac{-4}{-2}\\\\= 2[/tex]

Slope of the perpendicular line = -1/m = -1/2 =  -1/2

m = -1/2 ; (-4 , 5)

y - y1 = m(x - x1)

[tex]y - 5 = \frac{-1}{2}(x -[-4] )\\\\y - 5= \frac{-1}{2}(x + 4)\\\\y - 5 = \frac{-1}{2}x +\frac{-1}{2}*4\\\\y-5 = \frac{-1}{2}x -2\\\\y = \frac{-1}{2}x-2+5\\\\y=\frac{-1}{2}x + 3[/tex]

Answer:

4/8

Step-by-step explanation:

Answer:

The slopes are the same and the y intercept are the same.

Step-by-step explanation:

In ordwe for a line to have infinitely many solutions they must be the exact same line.

Answer: If a system has infinitely many solutions, then the lines overlap at every point. In other words, they're the same exact line! This means that any point on the line is a solution to the system.

Step-by-step explanation: I hope that Helps!

Answer:

Any equation that has the same slope (1/3), and a Y-intercept other than 6

Step-by-step explanation:

Answer:

y = 0.2x + 31

855 minutes would cost $202.

Step-by-step explanation:

Let,

a be the cost per minute and f be the flat fee charged.

Now,

130a + f = 57         Eqn 1

520a + f = 135      Eqn 2

Subtracting Eqn 1 from Eqn 2

520a + f - 130a - f = 135 - 57

390a = 78

Dividing both sides by 390

a = $0.2

Putting in Eqn 1

130 (0.2) + f = 57

26 + f = 57

f = 57 - 26

f = 31

Hence the company charges a flat fee of $31 and $0.2 per minute.

Equation in slope intercept form.

y = 0.2x + 31

Now putting x = 855

y = 0.2(855) + 31

y = 171 + 31

y = $202

Therefore,

y = 0.2x + 31

855 minutes would cost $202.