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
allochka39001 [22]
2 years ago
7

5a+4b=65 elimination substitute and check

Mathematics
1 answer:
SIZIF [17.4K]2 years ago
4 0

Answer:

a=13 - 4b/5

b=65/4-5a/4

Step-by-step explanation:

You might be interested in
Would someone explain this
Romashka [77]

The answer is C 3n+2

3 0
3 years ago
Read 2 more answers
Arden has 15 cards and 3 of those cards are red. What percent of her cards are red? *​
Kisachek [45]

Answer: 20%

Step-by-step explanation: 3/15 = 1/5 = .20 = 20%

5 0
3 years ago
What is the slope of the line represented by the equation y=4/5x-3?
lawyer [7]
4/5 is the slope. When you isolate the y on one side of a linear equation, whatever number is with the x value is your slope.
4 0
3 years ago
Read 2 more answers
A supply company manufactures masks and ventilators for hospitals. To maintain hugh quality, the company should not manufacture
notsponge [240]

Answer:

20 masks and 100 ventilators

Step-by-step explanation:

I assume the problem ask to maximize the profit of the company.

Let's define the following variables

v: ventilator

m: mask

Restictions:

m + v ≤ 120

10 ≤ m ≤ 50

40 ≤ v ≤ 100

Profit function:

P = 10*m + 65*v

The system of restrictions can be seen in the figure attached. The five points marked are the vertices of the feasible region (the solution is one of these points). Replacing them in the profit function:

point          Profit function:

(10, 100)    10*10 + 65*100 = 6600

(20, 100)    10*20 + 65*100 = 6700    

(50, 70)      10*50 + 65*70 =  5050

(50, 40)     10*50 + 65*40 = 3100

(10, 40)      10*10 + 65*40 =  2700

Then, the profit maximization is obtained when 20 masks and 100 ventilators are produced.

4 0
3 years ago
Sarah has 80 books in her collection if 60% of the books or fiction how many of the books or nonfiction
EastWind [94]
80 multiplied by 0.6 = 48

80-48=32

Answer=32 Books are nonfiction
5 0
3 years ago
Other questions:
  • The result of which expression will best estimate the actual product of (-4/5) (3/5) (-6/7) (5/6)?
    9·2 answers
  • An athlete runs 1 mile along a normal 400m athletic track and finishes exactly on the finish line. Where did he start from? ( 1
    14·1 answer
  • 3x²+5x-10=0 find the values of a,b and c​
    11·1 answer
  • Does anyone know the answer?
    12·1 answer
  • There are 12 dogs and 6 cats at a local pet store. What is the ratio of the number of cats to the total number of animals?
    7·2 answers
  • The seagull population on a small island in the Atlantic Ocean can be calculated using the formula
    5·1 answer
  • "the total cost to buy 12 candy bars, if each one costs the same"
    10·1 answer
  • In a game of cornhole, Sasha tossed a bean bag and it landed at the edge of the hole. The hole can be represented by the equatio
    8·1 answer
  • Peter began his trip at 1 on the number line shown above. He moved 3 positive counts on day one and 8 negative counts on day two
    8·2 answers
  • Write in standard form
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!