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
borishaifa [10]
3 years ago
6

Alvin’s first step in solving the given system of equations is to multiply the first equation by 2 and the second equation by –3

. Which linear combination of Alvin’s system of equations reveals the number of solutions to the system?
9x + 4y = 36

6x + 2.5y = 24
Mathematics
1 answer:
Arada [10]3 years ago
7 0

Answer:

solving we get Solution set = {4,0}

Step-by-step explanation:

We are given system of equation:

9x + 4y = 36---eq(1)\\6x + 2.5y = 24---eq(2)

Multiply eq(1) by 2 and eq(2) by -3

18x \ \ + 8y \ \ \ = 72\\-18x - 7.5y = -72\\---------\\0.5y=0\\y=0

We get y=0,

Now finding x by putting value of y in eq(1)

9x + 4y = 36\\9x+4(o)=36\\9x=36\\x=\frac{36}{9}\\x=4

So, solving we get Solution set = {4,0}

You might be interested in
What is the final concentration if a saline solution consisting of 20% NaCl is diluted using a 1/4 solution?
vodomira [7]

Answer: C.V=C1.V1 +C2.V2

Step-by-step explanation: C=(C1V1 + C2V2)/V -> C=(20%.V+25%V)/2V-> C=22,5%

6 0
3 years ago
Gina wants to ship 3 books that weigh 2 7/16 pounds, 1 7/8 pounds and 1/2 pound. the maximum weight she can ship is 6 pounds. ho
pshichka [43]
You have to find a common denominator 1st then add. So 16 is the common denominator the problem should be 2 7/16+1 14/16+8-16= 3 29/16 then you need to divide 29/16 you will have 4 13/16
6 0
3 years ago
Read 2 more answers
To be able to do the problem 5(10 + 4) mentally, Zack does 50 + 20 instead of 5(14).
Eddi Din [679]

Answer:

1. Distributive

Step-by-step explanation:

This is because you multiply the number outside the parentheses into the numbers inside the parentheses.

Hope it helped.

8 0
3 years ago
Read 2 more answers
The Senior class held an election for class president. Pamela received three (3) votes for every two (2) votes Angela received.
likoan [24]

Answer:

46

Step-by-step explanation:

Divide 69 by 3

69 / 3 = 23

Take it times two.

23 x 2 = 46

Proportion

\frac{3}{2} =\frac{69}{x}

Cross multiply and solve for x.

6 0
3 years ago
Please help, I can figure out 20 shares multiply by $117.98 =2359.69
11Alexandr11 [23.1K]

Answer:

The awnser is D hope this helps :)

Step-by-step explanation:


4 0
3 years ago
Other questions:
  • Solve for x. 5/3 times x ≤ 10
    13·2 answers
  • Which number is greater 20% or 0.02
    8·2 answers
  • 50 POINTS! PLEASE HELP<br>I don't understand problems A and B.
    6·1 answer
  • There are currently 502 students at Hendrick Middle School. If that number is continuously
    13·1 answer
  • How is ur life going?
    14·2 answers
  • The figure shows a line graph and two shaded triangles that are similar:
    14·1 answer
  • This is the start of the question, thanks again!
    13·2 answers
  • If hugo goes out for dinner and pays 2$ of sales tax on a 20$ meal what percentage is the sales tax in his city?
    8·1 answer
  • 8- (0.75+2). Plzzz explain it
    5·1 answer
  • The product of two factors is 6000 one of the factors is 3000 what is the other factor
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!