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
A group of kids just finished trick-or-treating. The number of pieces of candy collected by each of the 5 kids is listed below.
AleksandrR [38]
The standard deviation is about 3.81
To find standard deviation on calculator hit stat, 1, enter in each number, hit stat again, the hit the arrow to go to calc, then 1, and enter until it shows you the stats. The icon that says Sx is standard deviation for the data set you entered.
4 0
1 year ago
A rental car agency charges $30.00 per day
lutik1710 [3]
<h2>Answer:</h2><h2>They should travel 120 mils in one day for both rental agencies  to cost the same amount to rent</h2>

Step-by-step explanation:

A rental car agency charges $30.00 per day  plus per mile $0.15.

Let x be the number of miles travelled by car

Their total cost = 30 + (0.15x)   ... (1)

Another rental car  agency charges $36.00 per day plus $0.10  per mile

Their total cost = 36 + (0.10x)   ... (2)

Equating (1) and (2), we get

30 + (0.15x) = 36 + (0.10x)

36 - 30 = 0.15x - 0.10x

6 = 0.05x

x = 120 miles

They should travel 120 mils in one day for both rental agencies  to cost the same amount to rent

5 0
3 years ago
Evaluate 4<br> M-n if m= -7 and n = 2.
gregori [183]

Answer:

-30

Step-by-step explanation:

I'm assuming the equation is 4m-n. If it is not please tell me.

If we know the values of m and n, we can just substitute inside the expression.

4(-7) - 2\\\\-28 - 2\\\\-30

Hope this helped!

7 0
3 years ago
Triangle UVW is formed by the three squares G, H, and I:
Alinara [238K]

Answer:

The correct answer would be C- (UV)2 + (VW)2 = (UW)2, because 81 + 144 = 225

-Thank you

3 0
3 years ago
Read 2 more answers
I need help please?!!!):
disa [49]

Answer:

RAGE

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • 6th grade math help :D....
    8·2 answers
  • If 3(x -4) = 12, then x = 24. true or false
    8·1 answer
  • Please hurryyyyyyyyy!!!!!!!!!!
    6·1 answer
  • Which of the following is not a valid reason for a dealership to offer
    15·2 answers
  • The equation Y-3 = -2(x+5) is written in point-slope form. What is the y-intercept of the line?
    12·1 answer
  • Which of the following graphs represents the equation y -4 =3 (x-1)
    14·1 answer
  • 16
    11·1 answer
  • Jordan is driving to a concert and needs to pay for parking. There is an automatic fee of $11 just to enter the parking lot, and
    15·1 answer
  • i do not wan t have to do this again so in return ill give brain to the the first answer correct and 5 stars and thanks
    9·1 answer
  • A right circular cone is intersected by a plane that passes through the cone's
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!