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
Theo had a balance of -4 in his savings account. After making a deposit , he has $25 in his account . What is the overall change
ozzi
Theos initial balance in his savings account = -$4
Final balance after making a deposit = $25
So, the overall change to his account = $ 29
6 0
3 years ago
I need help on this question hurry!!
Natasha_Volkova [10]

Answer:

(0.4,1)

Step-by-step explanation:

I hope that this is for homework and not a quiz or test.

Since we already know the value of y which is 1, we can substitute it into the equation above it.

-5x+3=1

-5x=-2

x=2/5=0.4

So in (x,y) format (0.4,1)

6 0
3 years ago
Defining congruent triangles
seropon [69]

Answer:

E -->R

D-->K

O-->O

Step-by-step explanation:

Assuming you are asking for congruent parts, correspondence is the part which corresponds and is also equal.

Here Angle E corresponds and is congruent to Angle R in these congruent triangles.

Angle D is congruent and corresponds to Angle K for these congruent triangles.

Angle O is equal to Angle O as they are vertical angles across a vertex.

5 0
3 years ago
How do i write log 4^2=16 in logarithmic form
ohaa [14]
Log16 4 = 2      
log base 16 then the number four then set that equal to 2        

7 0
3 years ago
Find the values of x and y.<br> 48°<br> (5x – 17)<br> X =<br> and y =
likoan [24]
Can you explain more
6 0
2 years ago
Other questions:
  • Which of these is an equation? A 2y + 7 = 9 B 2x &gt; 3 C 3n + 5 D a2 + 2
    9·1 answer
  • 25% of what equals 21 ?
    5·1 answer
  • Solution of the equation
    10·1 answer
  • Mr.Jackson is saving money to go on a trip. Last month,he saved $21 dolloars each week for 4 weeks. This month he saved 3 times
    13·1 answer
  • Find the dimensions of a rectangle of area 144 sq ft that has the smallest possible perimeter
    14·1 answer
  • Plz help on 4,8 really need answers to get some point
    13·1 answer
  • You might need:
    12·1 answer
  • Ok so I just got a 210 question test right and I have 1 day to complete it I'm on question 135 and it says 22,000 - 98,000 +23,9
    12·2 answers
  • Inez carved a wooden cone from a
    12·1 answer
  • Find an equivalent fraction to 5/6 only.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!