1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vazorg [7]
3 years ago
9

Darren wins a coupon for $4 off the lunch special for each of 5 days he pays $75 for his 5 lunch specials. write and solve and e

quation to find the original price p for one lunch special
Mathematics
1 answer:
Rufina [12.5K]3 years ago
3 0
[$75 - $4(5)] / 5 = p
You might be interested in
Which is more, 5 tons or 9,998 pounds?
Katyanochek1 [597]

Answer:

5 tons

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Geometry Question Help please
Oksana_A [137]

Ans

It 1750

Step-by-step explanation:

You have to multiple

4 0
3 years ago
Input
melamori03 [73]

If we graph the given points then they appear to be in the shape of cubic function so we can use standard formula of cubic function which is


y=ax^3+bx^2+cx+d


Plug the given points to get four equations


like first point (3,6) so plug x=3 and y=6 into above equation, we get:


6=a*3^3+b*3^2+c*3+d


or


6=27a+9b+3c+d


Same way by plugging other points form table, we get total four equations as follows:


6=27a+9b+3c+d, 11=125a+25b+5c+d, 11=64a+16b+4c+d, 21=343a+49b+7c+d


Now we just need to solve these equations for a, b, c and d.

Solving them to get values of a, b, c and d, we get:


a=\frac{25}{24}, b=-15, c=\frac{1715}{24}, d=-\frac{203}{2}


Now plug them into


y=ax^3+bx^2+cx+d


So the required equation will be:


y=\frac{25}{24}x^3-15x^2+\frac{1715}{24}x-\frac{203}{2}


Hence required equation in function notation can be written as


f(x)=\frac{25}{24}x^3-15x^2+\frac{1715}{24}x-\frac{203}{2}


Now to prove that above function is correct, we just graph the given points from table and the obtained function.


After graphing the given points from table and the obtained function, We see that points lie on the graph of y=\frac{25}{24}x^3-15x^2+\frac{1715}{24}x-\frac{203}{2}


Which proves that our equation is correct.


5 0
3 years ago
Solve (2^2x+1)-9(2^x)+4=0​
BartSMP [9]
  • Answer:

<em> x₁ = - 1</em>

<em> x₂ = 2</em>

  • Step-by-step explanation:

<em>2²ˣ⁺¹ - 9ₓ2ˣ + 4 = 0</em>

<em>2²ˣₓ2 - 9ₓ2ˣ + 4 = 0</em>

<em>2ˣ = n</em>

<em>2n² - 9n + 4 = 0</em>

<em>2n² - n - 8n + 4 = 0</em>

<em>n(2n - 1) - 4(2n - 1) = 0</em>

<em>(2n - 1)(n -4) = 0</em>

<em>2n - 1 = 0 => n₁ = 1/2</em>

<em>n - 4 = 0 => n₂ = 4</em>

<em />

<em>2ˣ = 1/2 => 2ˣ = 2⁻¹ => x₁ = - 1</em>

<em>2ˣ = 4 => 2ˣ = 2² => x₂ = 2</em>

8 0
3 years ago
X + y = 5<br> y = 3x + 1<br><br><br> How do I find the solution from these two equations by graphing
Mandarinka [93]

Answer:

x=1, y=4

Step-by-step explanation:

x+y=5 - (1)

y=3x + 1 (2)

Sub (2) into (1)

x + (3x +1)=5

4x=5-1

x=4 ÷4

=1

Sub x=1 into (2)

y=3(1)+1

= 4

5 0
3 years ago
Read 2 more answers
Other questions:
  • Erik and Nita are playing a game with numbers
    6·1 answer
  • The points in the table lie on a line. Find the slope of the line.
    9·1 answer
  • 9e+4=−5e+14+13e<br><br> What does E equal?
    10·2 answers
  • Find the coordinates of the other endpoint of the​ segment, given its midpoint and one endpoint.​ (Hint: Let​ (x,y) be the unkno
    7·1 answer
  • Which points define the solution set
    13·1 answer
  • Help answer this if ya know!
    9·1 answer
  • If a square is 12 cm in length and 2 cm wide, what is the area of the square?
    8·2 answers
  • The money used in Saudi Arabia is the Riyal.The exchange rate is 4 Riyals to 1 dollar. How many Riyals would you receive if you
    12·1 answer
  • A circle has a diameter of 4 inches. A square has a side length of 4 inches. What is true about the areas of these two figures?
    10·1 answer
  • Complete the congruence statement for the figure shown. If the triangles cannot be shown congruent, type na in each blank.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!