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
Pavel [41]
3 years ago
11

On Monday, the office staff at your school paid$8.77 for 4 cups of coffee and 7 bagels. On Wednesday, they paid $15.80 for 8 cup

s of coffee and 14 bagels. Can you determine the cost of the bagels? State your claim and provide evidence and explanation to support your claim.
Mathematics
1 answer:
IgorC [24]3 years ago
4 0
Set up 2 different equations for each day and then solve using substitution or elimination
You might be interested in
How do you do this question?
ElenaW [278]

x*y' + y = 8x

y' + y/x = 8 .... divide everything by x

dy/dx + y/x = 8

dy/dx + (1/x)*y = 8

We have something in the form

y' + P(x)*y = Q(x)

which is a first order ODE

The integrating factor is u(x) = e^{\int P(x)dx} = e^{\int (1/x) dx} = e^{\ln(x)} = x

Multiply both sides by the integrating factor (x) and we get the following:

dy/dx + (1/x)*y = 8

x*dy/dx + x*(1/x)*y = x*8

x*dy/dx + y = 8x

y + x*dy/dx = 8x

Note the left hand side is the result of using the product rule on xy. We technically didn't need the integrating factor since we already had the original equation in this format, but I wanted to use it anyway (since other ODE problems may not be as simple).

Since (xy)' turns into y + x*dy/dx, and vice versa, this means

y + x*dy/dx = 8x turns into (xy)' = 8x

Integrating both sides with respect to x leads to

xy = 4x^2 + C

y = (4x^2 + C)/x

y = (4x^2)/x + C/x

y = 4x + Cx^(-1)

where C is a constant. In this case, C = -5 leads to a solution

y = 4x - 5x^(-1)

you can check this answer by deriving both sides with respect to x

dy/dx = 4 + 5x^(-2)

Then plugging this along with y = 4x - 5x^(-1) into the ODE given, and you should find it satisfies that equation.

6 0
3 years ago
Your hotdogs currently have a menu price of $2.80 + $.10 for extra sauerkraut. You want to include the sauerkraut in the cost an
jasenka [17]

Answer:

C) $3.77

Step-by-step explanation:

  • $2.80 + $0.10 = $2.90

  • Turn 30% into 0.30 by moving the decimal point (percentage sign) 2 places to the left.

  • To solve 30% of $2.90  →   0.30 x 2.90 = 0.87

  • Finally  $2.90 + $0.87 = $3.77
3 0
3 years ago
Miriam and Salina are twins and their sister Rohana is 2 years older than them. The total of their ages is 32years .Find their a
Fudgin [204]

Answer:

644

Step-by-step explanation:

8 0
3 years ago
What number is represented by their question mark if row 2 is LinkedIn row 1 ?
kenny6666 [7]

Answer:

hi branliest me me bhi krunga

5 0
2 years ago
Here is a picture of a math problem.
MAXImum [283]
The coordinates are (6,-9) (-12,-3) (0,-7)

you put 6 in the place of x to get 6+3y=-21 then you must take 6 away from each side to get 3y= -27 then divide each side by 3 so -27 divided by 3 is -9. do this for all of them! hope it helped!
3 0
3 years ago
Other questions:
  • Le
    6·1 answer
  • How do I solve this problem b+2/b-1=4/5
    12·1 answer
  • Jodi’s car used 12 gallons of gas to travel 456 miles. How many miles did her car travel per gallon of gas?
    11·2 answers
  • Plz answer will get brainliest
    8·1 answer
  • HELP WHAT IS THE SLOPE!!!!!
    10·2 answers
  • In the figure, side AB is given by the expression 1 + 3, and side BC is 21 – 4.
    6·1 answer
  • What is the difference between 8477 and 4844 ?
    12·2 answers
  • Y=7×2^t/30 what is the equation solved for t​
    5·1 answer
  • Can someone solve this?
    13·1 answer
  • The set of three lengths that will form a right triangle are
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!