Mathematics High School

need help ive always had trouble with writing functions.

Candy is on sale for $0.75 each. you have a coupon for $0.25 off your total purchase. write a function rule for the cost of n pieces of candy.

A. C(n)0.25n-0.75
B. C(n)=0.75n-0.25
C. C(n)=1.0n
D. C(n)=0.75n

Answers

Answer 1
B. C(n)=0.75n-0.25  
n pieces of candy = .75 cents x n pieces minus .25 cent coupon.

Related Questions

Brainliest!
World’s Busiest Airports
Airport
Total Passengers (millions)
Atlanta, Hatfield
80.2
Chicago, O’Hare
72.1
Los Angeles
68.5
Dallas/Ft Worth
60.7
London, Heathrow
64.6

Find the mean number of passengers in the world’s five busiest airports.
a.
69.22 million
c.
80.2 million
b.
346.1 million
d.
60.7 million

Answers

The answer will be A. 69.22


Hope this helps <3
The answer would be A

Find the value of y for which line a is parallel to line b


38

52

76

142

Answers

As is shown in the figure attached:

1. "A" and 76º are congruents, because they are Alternate Interior angles, so A=76º.
 
 2. "D" and "x" are congruents, because they are Alternate Interior angles, so x=38º.
 
 3. "A", "B" and "C" form a the triangle ABC. Then, we remember sum of the interior angles of a triangle is 180º, so we have:
 
 76º+38º+B=180º
 B=180º-76º-38º
 B=66º
 
 4. By definition, an exterior angle of a triangle is equal to the sum of the opposite interior angles to it. So, we can calculate the exterior angle "y" of the triangle ABC, as follows:
 
 The opposite angles are: 76º and 66ª. Then, we obtain:
 
 y=76º+66º
 y=142º

 Therefore, the answer is: The value of y is 142º.

On a trip, you had to change your money from dollars to British pounds. You got 560 pounds for 800 dollars. How many pounds will you get for 300 dollars?


Answers

Use proportions to solve this.  Set up the ratios with dollars on the top and pounds on the bottom and then cross-multiply to solve for x.  Like this:  [tex] \frac{d}{p}: \frac{800}{560}= \frac{300}{x} [/tex].  Cross multiplying gives us 800x=168,000.  Divide by 800 to get that x = 210.  So $300 equals 210 pounds. 

The digits 8,7,6,5,4,3,2,1 are written in a pattern over and over again. what will be the 5479th digit

Answers

The 5479th digit is 2.

What is Division?

One of the fundamental mathematical operations is division, which involves breaking a bigger number into smaller groups with the same number of components.

How many groups will be created, for instance, if 30 students need to be separated into groups of five for a sporting event? The division operation can be used to quickly and easily fix such issues. In this case, we must divide 30 by 5.

given:

8 digits written in that same order ( 8,7,6,5,4,3,2,1 ) over and over again

So, we have to find 5479th digit

= 5479/8

= 684 7/8

Now, The 684 quotient tells us how many complete times the sequence goes through the cycle of  8,7,6,5,4,3,2,1, and the 7 remainder tells us which member of the cycle is the 5479 digit.

Since the 7th member of the cycle is 2.

Hence, the 5479th digit is 2.

Learn more about division here:

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Help please !!!!!!!!!!!!!!!!!???!?

Answers

Answer: D) 5

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

The idea is to go through each answer choice and see if that value is in the range. To do so, draw a horizontal line from that value at the y axis and see if it crosses the graph.

So for example, for choice A, we draw a horizontal line through -2 on the y axis. You'll see that the horizontal line crosses the green part of the piecewise function graph. So y = -2 is in the range. Similar situations will happen for B and C as well. 

The only time that this doesn't happen is when y = 5. Draw a horizontal line through 5 on the y axis. This horizontal line is too high to cross through any part of the piecewise function. So y = 5 is not in the range. 

Which is why the answer is choice D

A Hummingbird moves its wings at a rate of 5520 wingsbeats a minute. Write this rate in wingbeats per second?

Answers

Should be just 92 wingbeats per second.

The required rate of wingbeats per second is 92.

A Hummingbird moves its wings at a rate of 5520 wingsbeats a minute. Write this rate in wingbeats per second?

What is rate of change?

Rate of change is defined as the change in value with rest to the time is called rate of change.

given rate = 5520 wingsbeats a minute.
      now to convert it in seconds divide it by 60

= 5520/60
= 92 wingsbeats a second

Thus, The required rate wingbeats per second is 92.

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In calculating the present value of $1,000 to be received 5 years from today, the discount factor has been calculated to be .7008. what is the apparent interest rate?

Answers

To calculate the present value we shall proceed as follows:
from the present value table, the percentage corresponding to discount factor of 0.7008 in 5 years is 7%
therefore using the formula:
FV=PV(1+r/100)^n
where:
FV=$1000
PV=?
r=7%

hence:
1000=PV(1+7/100)^5
PV=1000/(1+7/100)^5
PV=712.986

According to the Rational Root Theorem, which statement about f(x) = 12x3 – 5x2 + 6x + 9 is true? Any rational root of f(x) is a multiple of 12 divided by a multiple of 9. Any rational root of f(x) is a multiple of 9 divided by a multiple of 12. Any rational root of f(x) is a factor of 12 divided by a factor of 9. Any rational root of f(x) is a factor of 9 divided by a factor of 12.

Answers

Any rational root of f(x) is a factor of 9 divided by a factor of 12.

Answer:

Any rational root of f(x) is a factor of 9 divided by a factor of 12.

Step-by-step explanation:

Given:

f(x) = 12x³– 5x² + 6x + 9

Required; Rational root of f(x)

The rational root theorem states that: each rational solution

x = p⁄q, written in lowest terms so that p and q are relatively prime

Where

p = factors of the constant

q = factors of the lead coefficient.

Given that

f(x) = 12x³– 5x² + 6x + 9

The constant is 9

And the lead coefficient is 12

The factor of these two are

9; ±1 , ±3, ±9

12: ±1, ±2, ±3, ±4, ±6, ±12

Then the rational root of f(x) is

factor of 9 divided by a factor of 12.

Possible Rational Roots

= (±1 , ±3, ±9) / (±1, ±2, ±3, ±4, ±6, ±12)

The correct statement according to the rational root theorem is

The rational root of f(x) is

factor of 9 divided by a factor of 12

Ciara solved the exponential equation 3x+1 = 15 and her work is shown below. What is the first step she did incorrectly? (3 points) Step 1: log 3x+1 = log15 Step 2: (x + 1)log 3 = log15 Step 3: log3 = log 15 over x plus 1 Step 4: 0.477121 = 1.176091 over x plus 1 Step 5: 0.477121(x + 1) = 1.176091 Step 6: x + 1 = 1.176091 over 0.477121 Step 7: x + 1 = 2.464975 Step 8: x = 1.464975

Answers

log3=log 15 over x+1 I think

Answer:

The Answer is Step 3. I took the test :)

Cody graphed a quadratic equations, y = -(x+3)^2 + 1. What were cody's mistakes?

Answers

We can see in the graph attached below how the real curve would look.

The vertex of cody's graph was ploted in x = 3, where it should be x = -3

This changes the position of the parabola

Answer:

the answer is d

Step-by-step explanation:

The vertex and the axis of symmetry are graphed incorrectly.

Anybody have a correct answer?

Answers

Lets get started :)

The formula for the Lateral Area of Square-based Pyramid
L.A = [tex] \frac{1}{2} [/tex] (Perimeter of the base) x Apothem
      
Given:
Apothem = 10 in
Side length = 5 in 
Perimeter of Square = 4 x side = 4 x 5 = 20 in

L.A = [tex] \frac{1}{2} [/tex] (20)(10)
      = [tex] \frac{1}{2} [/tex] (200)
      = 100 in²

Answer:

100

Step-by-step explanation:

What is 5/15 written as a decimal???

What is 4/15 written as a decimal???

What is 3/15 written as a decimal???

Answers

the first when you do is divide 15 by 5 and you get 3 so. 0.333333 number 2 is 0.26666 the 3rd is 1 divided by 5 equals 0.2
Hello!

There are a couple ways we can use to convert a fraction to a decimal, but let's stick with the easiest one.

To convert a fraction to a decimal, simply divide the numerator (top part of the fraction) by the denominator (bottom part).

The first fraction is 5/15. Its numerator is 5, and its denominator is 15. Divide the top by the bottom.

5 ÷ 15 = 0.3333333333

Because this decimal keeps repeating, it is called a "repeating fraction."

We don't want to write all those 3's over and over again, so to indicate that it is a repeating decimal, simply put a bar above the 3.

Convert the other two fractions using the same method:

4 ÷ 15 = 0.266666667

Remember to put a bar above the repeating number.

3 ÷ 15 = 0.2

Since this decimal does not repeat, it is called a "terminating decimal". You do not have to put a bar above the 2.

Don't forget this method!

Find a second-degree polynomial p such that p(1) = 5, p'(1) = 7, and p''(1) = 10.

Answers

When p(x) = ax^2 +bx +c
p'(x) = 2ax +b
p''(x) = 2a

You require
.. 2a = 10
.. 2a +b = 7
.. a + b + c = 5

Thus a=5, b=-3, c=3, and
.. p(x) = 5x^2 -3x +3
Final answer:

The given conditions suggest a second-degree polynomial of form p(x) = ax^2 + bx + c. By solving the given conditions a = 5, b = -3, and c = 3, yielding the polynomial p(x) = 5x^2 - 3x + 3.

Explanation:

The question is asking for a second-degree polynomial, which can generally be written in the form p(x) = ax^2 + bx + c. Given that p(1) = 5, that means a + b + c = 5. The derivative of p(x), p'(x) = 2ax + b, and p'(1) = 7, so 2a + b = 7. The second derivative, p''(x) = 2a, and p''(1) = 10, so 2a = 10 or a = 5. We can substitute a = 5 into the first two equations to find the values of b and c. So, b = -3 and c = 3. Therefore, the original function is p(x) = 5x^2 - 3x + 3.

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In the diagram, AB = 12, DX = 2.5, and BX = 5. Find CD. Show all work.

Answers

I found your complete question in another source.
 See attached image. 
 For this case what you should see is that you have two similar triangles.
 We then have the following relationship:
 ((AB) / (BX)) = ((CD) / (DX))
 We cleared CD:
 CD = ((AB) / (BX)) * (DX)
 Substituting the values:
 CD = ((12) / (5)) * (2.5)
 CD = 6
 Answer: 
 CD = 6

The graph shows the amount of money the Phillips family spent each month on groceries.
When did the greatest month-to-month increase in spending occur?
July–August
April–May
June–July
May–June

Answers

Your answer is from July to August.

Answer:

Option A. July-August.

Step-by-step explanation:

Phillips family spent each month on groceries. The amount of money in each month is shown in a graph.

Approximate amount in each month was spent :

March : $450

April  : $400

May  :  $400

June  :  $500

July  :  $300

August : $ 500

Sep.  :  $480

Oct. : $420

From the graph given, there is a greatest month to month increase in spending occur in July to August (from $300 to $500).

So Option a. July-August is the correct answer.

BRAINLIESTTT ASAP!!!!

Answers

The curves cross at x=-3.5 and at x=-0.5.

The 1st selection is appropriate.

I don't get it x/5 + x+4/3 = 4

Answers

[tex] \dfrac{x}{5} + \dfrac{x + 4}{3} = 4 [/tex]

[tex] \dfrac{x}{5} \times \dfrac{3}{3} + \dfrac{x + 4}{3} \times \dfrac{5}{5} = 4 [/tex]

[tex] \dfrac{3x}{15} + \dfrac{5x + 20}{15} = 4 [/tex]

[tex] \dfrac{8x + 20}{15} = 4 [/tex]

[tex] 8x + 20 = 60 [/tex]

[tex] 8x = 40 [/tex]

[tex] x = 5 [/tex]
I explained the answer for you

helpppppppppppppppppppppppppppppppp

Answers

Hey there!

By us looking at this expression, [tex](fg)(5)[/tex], this would be clear to show us that (fg) would be multiplied by 5.  So, in your options, this would be something that we would want to find, a multiplication expression.

Your correct answer to this question would be A.) Let's look! So, the first part of the option A.) is [tex]f(5)[/tex] and from this, it would auto matically be multiplied. Now it would also be the same as the other part of the expression, which so sum it all up, this would be the best answer that would be equivalent to the expression above.

Your correct answer would be . . . . .

[tex]\boxed{\boxed{f(5)*g(5)}}[/tex]

Hope this helps you greatly!

Answers...........................?

Answers

1.25/5 = 0.25

Your calculator can help with this if you don't happen to know already that 1/5 of 5/4 = 1/4.

A group of 500 transistors is known to contain one defective unit. What is the probability that a transistor selected at random from the lot is the bad one?

Answers

So, we can define probability as the following ratio: Number of successful outcomes over Number of total outcomes. Suppose we define an event to be the drawing of one transistor from the lot. If we want to calculate the probability that it is defective, a "successful" event would be drawing a defective transistor. Hence there is 1 successful event. But we can choose from 500 transistors, hence there are 500 total outcomes. Thus, the ratio that defines the probability P is: p=1/500. Calculating this, yields that p=0.002 or p=2%

The answer is 1/500 because it will always be the probability of the event occurring/total events

how many bricks 3.75 in wide times wide x 8 in long are required to cover a patio 13 ft. 6 in wide by 18. 9 ft long

Answers

3.75 x 8 = 30 in (brick size)

13 x 12 = 156
156+6 = 162
18.9 x 12 = 226.8
226.8 x 162 = 36741.6 in (patio size)

36741.6 / 30 = 1224.72

You need 1224.72 bricks
(or round to 1225)

What is the area of the polygon

Answers

The figure is a triangle.

Formula:
Area of triangle = 1/2 x base x height


Area of triangle = 1/2 x 22 x 9
Area of triangle = 99 square units

HELP FAST PLEASE

A six-feet-tall man looks off the roof of a five-story hotel. He sees a statue that is 75 ft. away from the hotel. If he is looking at the base of the statue, what angle does his sight line form with the side of the hotel? Assume that each complete story of the hotel is 12 ft. tall.

32.6 degrees
43.9 degrees
48.7 degrees
54.2 degrees

Answers

i think it is 48.7. if i get it wrong sorry

Answer: 48.7 degrees

Step-by-step explanation:

Let [tex]\theta[/tex] is the angle between the his sight line form with the side of the hotel,

Since, the building is of 5-story and a men having height 6 feet is in the fifth-story.

Thus, the total length from the eyes of the man and foot of the building = 6 + 12 × 5 = 6 + 60 = 66 feet

Also, the distance of the statue from the foot of the building = 75 feet.

Then by the below diagram,

[tex]tan\theta = \frac{75}{60+6}[/tex]

[tex]tan\theta = \frac{75}{66}[/tex]

[tex]\theta=48.6522227803\approx 48.7\text{ degree}[/tex]

Rodney bought a 25-pound bag of dog food.His dog at 10 2/5 pounds of food in the first month and 10 4/5 pounds of the food in the second month.How much dog food,in pounds, was remaining in the bag at the end of the two months

Answers

10 4/5+ 10 2/5= 20 1/5 
25- 20 1/5 = 4 4/5 pounds of dog food is left.
Add the two together 10 2/5 + 10 4/5 =21 1/5 
Take 25 and subtract it by 21 1/5 you would get 3 4/5 
which would be 3.8 pounds 

How can Brady use fraction strips to show that 3 4 and 7 8 are NOT equivalent?

Answers

Brady needs three strips that each represent one fourth (1/4). He needs to line them up end to end. The new long strip he has created represents 3/4.

Next Brady needs seven strips that each represent one eighth (1/8). He needs to line them up end to end. The new long strip he has created represents 7/8.

If the two long strips he created were equal then 3/4 would equal 7/8 but as they are not equal this is not the case. Since the strip for 7/8 is longer, the fraction 7/8 is greater than 3/4.
Final answer:

To demonstrate that 3/4 and 7/8 are not equivalent, Brady can use fraction strips to visually compare the colored portions of the strips, which will clearly show that 7/8 is greater than 3/4 as it has more colored sections.

Explanation:

To show that 3/4 and 7/8 are not equivalent using fraction strips, Brady can follow these steps:

Take one strip and divide it into four equal parts to represent the fraction 3/4. Color three of these parts.Take another strip, divide it into eight equal parts to represent the fraction 7/8, and color seven of these parts.Compare the two colored strips side by side.

Brady will observe that the strip representing 7/8 has more colored sections than the strip representing 3/4, even though the strips are the same length. This visual comparison confirms that 3/4 is less than 7/8, thus they are not equivalent fractions. The fraction 7/8 is only one-eighth away from being a whole, whereas 3/4 is one-fourth away.

What is 5/8 ± 2/5? Please Help easy points

Answers

easy points thank you so much :^)

In a homicide case 33 different witnesses picked the same man from a line up. the line up contained 5 men. if the identifications were made by random​ guesses, find the probability that all 33 witnesses would pick the same person. round to seven decimal places.

Answers

the correct question in the attached figure

we know that

the probability
that a witness picks a particular person by chance-----> P=1/5

the probability
that all 7 witnesses would pick the same person-----> P=1/5^7=0.0000128

the answer is the option B 0.0000128

There are a variety of problems in which the number of witnesses change, for example
....find the probability that all 9 witnesses would pick the same person

in this case, the probability would be-------> P=1/5^9=0.000000512

Final answer:

The probability that Nancy is a robber given Bob's identification is around 33.2%, considering Bob's accuracy and the base rate of robbers in the population.

Explanation:

Probability Calculation:

To find the probability that Nancy is a robber given Bob's identification, we use Bayes' Theorem. Given that Bob is 99% accurate in identifying suspects, the calculation reveals that the probability that Nancy is a robber is around 33.2%.

Base Rate Fallacy: It is crucial to consider the base rate of robbers in the population to avoid common statistical errors in interpreting the probability of an event.


A solid is composed of squares and equilateral triangles. Its net is shown below:


The area of each triangle is 1.5 square units. The surface area of the triangular prism is _____ square units. (Input whole number only.)

Answers

The answer is 16. There are 3 squares so
2*2=4
4*3= 12

There are 2 triangles so
2*2=4
4/2=2
2*2=4

4+12= 16

Answer:

So I am going one is kind of the same but it says six units and then it says the area of each triangle is 16 square units and I was trying to follow the step-by-step explanation from somebody else and I got 52 but I don’t know if I did that right

Step-by-step explanation:

Please HELP NEEDED ASAP APPRECIATED !! Brainlestwill be given

Answers

I think you were given (sqrt(x))^5 
sqrt(x) = x^(1/2) so 
(x^(1/2) )^5 = x^(5/2)
The answer closest to the bottom of the page <<<<===== answer.


which numerical expression would provide the solutions to the equation 7x^2 + 4x - 8 = 14

Answers

we have that
7x^2 + 4x - 8 = 14-----------------> 7x²+4x-22=0
Step 1
Solving a second degree equation
x1=[-b+√(b²-4ac)]/2a
x2=[-b-√(b²-4ac)]/2a
a=7
b=4
c=-22
then
x1=[-4+√(4²-4*7*(-22))]/(2*7)-----------> [-4+√(632)]/(14)
x1=-(-4+25.14)/14=1.51 

x2=[-4-√(4²-4*7*(-22))]/(2*7)-----------> [-4-√(632)]/(14)
x2=-(-4-25.14)/14=-2.08 

the solutions of the system is 
x1=1.51
x2=-2.08
to check the result

using a graph tool
see the attached figure

the answer is 
the numerical expressions is
x1=[-b+√(b²-4ac)]/2a
x2=[-b-√(b²-4ac)]/2a


Final answer:

The quadratic equation 7x^2 + 4x - 8 = 14 does not have any real solutions.

Explanation:

The given equation is a quadratic equation of the form at² + bt + c = 0, where a = 7, b = 4, and c = -22. To find the solutions, we can use the quadratic formula:

x = (-b ± √(b² - 4ac)) / (2a)

Substituting the values, we get:

x = (-4 ± √(4² - 4(7)(-22))) / (2(7))

Simplifying further, we get:

x = (-4 ± √(16 - 616)) / 14

x = (-4 ± √(-600)) / 14

The expression inside the square root is negative, which means there are no real solutions to the equation.

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