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
Gennadij [26K]
2 years ago
13

How many pounds of coffee worth $7 a pound should be added to 30 pounds of coffee worth $4 a pound to get a mixture worth $5 a p

ound
Mathematics
2 answers:
EleoNora [17]2 years ago
7 0
It’s a 5 pounds and it’s a long thing so it’s just easy to answer it’s a
goldfiish [28.3K]2 years ago
4 0
Let's begin by assigning a letter to represent our unknown:
x = lbs. of coffee at $7 per lb.

Now let's write an equation to express the cost of mixing the $7 per lb. coffee with the $4 per lb. coffee based upon how many pounds we have of each:
(7)(x) + (4)(10) = (5)(x + 10)

Solving our equation for x:
7x + 40 = 5x + 50
7x - 5x = 50 - 40
2x = 10
x = 5 (lbs. of coffee at $7 per lb.)

We can verify our answer by plugging our answer back into our equation and checking to see that both sides balance:
(7)(x) + (4)(10) = 5(x + 10)
(7)(5) + 40 = 5(5 + 10)
35 + 40 = 25 + 50
75 = 75 (both sides balance)

Since both sides balance, we are confident that our answer is correct.
Hope this helps !
You might be interested in
PLEASE HELP STRAIGHTAWAY:
LUCKY_DIMON [66]

Answer:

2 times

Step-by-step explanation:

6 0
3 years ago
Suppose 80% of people enjoy swimming. Suppose 70% of people enjoy running.
Ede4ka [16]

Answer:

95%

Step-by-step explanation:

In this case we can apply a formula that tells us that:  

# (AUB) = #A + #B - #AnB  

Where A would be the ones who enjoy swimming and B would be the ones who enjoy running. AnB is the intersection of both sets, that is, those who enjoy doing both things, these values we have, if we replace them we have left:

#(AUB) = 80% + 70% - 55%

#(AUB) = 95%

Which means that 95% of people enjoy either swimming or running

6 0
3 years ago
If f(x) and its inverse function, F(x), are both plotted on the same coordinate plane, what is their point of intersection?
polet [3.4K]

Answer:  d) (3, 3)

<u>Step-by-step explanation:</u>

Inverse is when you swap the x's and y's.

Let's look at the points and find their inverse:

  f(x)           f⁻¹(x)

(0, -2)  -->  (-2, 0)

(1, -1)   -->   (-1, 1)

(2, 0)  -->   (0, 2)

(3, 3)   -->   (3, 3)       f(x) = f⁻¹(x) so this is where they intersect!

5 0
3 years ago
-27 Irrational or rational
shutvik [7]

Answer:

rational

Step-by-step explanation:

irrational is something like pi or square root of 3, -27 is a simple number.

6 0
3 years ago
Read 2 more answers
5% of what number is 85?
Semmy [17]
5% = 0.5

0.5n = 85

Divide by 0.5

0.5n = 85
/0.5      /0.5

n = 170.

The number is 170.
8 0
3 years ago
Other questions:
  • Plz help me w/these three problems reasonably easy sixth grade math thank you!!!!!
    12·1 answer
  • What is the sum of 171
    8·1 answer
  • Evaluate the following expression (5x)^0?
    7·2 answers
  • Can someone explain to me how to find if an Algebra Expression is Equivalent to another
    11·2 answers
  • Which function types can have horizontal
    11·1 answer
  • 3^−1⋅(4⋅6)⋅2^−3 Enter your answer in the box.
    13·1 answer
  • Which direction would the graph of y=3|x|-8 open
    11·2 answers
  • Which fraction is equal to the decimal 0.125?<br> I need help now!!!!!!!
    6·1 answer
  • Marcy picked 3 times as many ounces of kale as Phil. Phil picked 42ounces of kale. How many ounces of kale did Marcy picked?
    14·1 answer
  • Benchmark fraction 1/2 is greater equivalent or less than 1/3 to 5/8
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!