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
IgorLugansk [536]
3 years ago
8

A person wishes to mix coffee worth nine dollars per pound with coffee worth three dollars per pound to get 240 pounds of a mixt

ure worth five dollars per pound how many pounds of the nine dollars and the three dollar coffee will be needed
Mathematics
1 answer:
Anastasy [175]3 years ago
4 0
\bf \begin{array}{lccclll}
&amount&price&priced\ amount\\
&-----&-----&--------\\
\textit{9 bucks/lb}&x&9&9x\\
\textit{3 bucks/lb}&y&3&3y\\
-----&-----&-----&-------\\
mixture&240&5&1200
\end{array}
\\\\\\
\begin{cases}
x+y=240\implies \boxed{y}=240-x\\
9x+3y=1200\\
----------\\
9x+3\left( \boxed{240-x} \right)=1200
\end{cases}

solve for "x".

what about "y"? well, y = 240 - x
You might be interested in
Identify the triangle by its sides and angles:
navik [9.2K]

Answer: Right and isosceles

4 0
2 years ago
Sandra throws an object into the air with an initial vertical velocity of 38 feet per second, from a platform that is 30 feet ab
Blababa [14]
<span>To solve it, use the quadratic formula with (½)(-32.174 ft/s²) = a, 38 ft/s = b, and 30 ft = c. There are two answers; the only positive answer is t = 2.986 s </span>
4 0
3 years ago
Read 2 more answers
Suppose y varies directly as x, and y =15 when x = 3. Find the constant of variation (k).
vovangra [49]

Answer:

k = 5

Step-by-step explanation:

y = kx

15 = k(3)

k = 15/3

k = 5

8 0
3 years ago
30 inches to 3 inches​
kondor19780726 [428]

Answer:

I believe its 3

Step-by-step explanation:

5 0
2 years ago
When you multiply a function by -1, what is the effect on its graph?
Dafna1 [17]

9514 1404 393

Answer:

  B.  The graph flips over the x-axis

Step-by-step explanation:

When you plot the coordinate pair (x, y), you plot the point 'y' units above the x-axis. If you change the sign of that (multiply the function by -1), then the point becomes (x, -y), and is plotted 'y' units below the x-axis.

The graph flips over the x-axis.

__

Attached is an example of a function with its original graph (red) and the graph after being multiplied by -1 (blue). The blue graph is a reflection of the red graph across the x-axis.

5 0
3 years ago
Other questions:
  • What is the measure of angle A?
    15·2 answers
  • Find the area of a regular nonagon with a side length of 7 and an apothem of 5
    5·1 answer
  • 1. A sample is being chosen for a survey to find out how people feel about adding more stop signs near a school. Which group wou
    5·1 answer
  • April is an avid chess player. She sets up a coordinate system on her chess board so she can record
    13·1 answer
  • Please help |x+10| , if x=−12
    14·1 answer
  • What is the equation of the midline of the sinusoidal function?
    8·2 answers
  • What is the volume of the pyramid? A.420cm^3 B.139cm^3 C.484cm^3 D.142cm^3
    13·2 answers
  • What is the sum of 3/4 and 2/12
    7·1 answer
  • Someone help me pls i need to pass summer school
    9·2 answers
  • An electrician collected $1265.23 for a job that included $840 labor, which was not taxed, and the rest for parts, which were ta
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!