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
NeX [460]
3 years ago
5

Please help me solve this..​

Mathematics
2 answers:
lesantik [10]3 years ago
6 0
The answer would be 5! i hope this helped you
Nataliya [291]3 years ago
3 0

Answer:

5

Step-by-step explanation:

Let a = number of pieces of chocolate bought by Amin.

Let b = number of pieces of chocolate bought by Bob.

b = 2a

(a - 3)(b - 3) = 14

ab - 3a - 3b + 9 = 14

a(2a) - 3a - 3(2a) = 5

2a^2 - 3a - 6a = 5

2a^2 - 9a - 5 = 0

(2a + 1)(a - 5) = 0

2a + 1 = 0  or  a - 5 = 0

a = -1/2  or  a = 5

Amin cannot have bought -1/2 pieces of chocolate, so we discard the soluion a = -1/2.

a = 5

Answer: 5

You might be interested in
John can type 45 words per min (45/min) he has to type a report for Mrs. Ramey that must be 2700 words. How many hours will it t
Sav [38]

Answer:

It will take 1 hour to type the report.

Step-by-step explanation:

The time that will take to John to type the report is:

\frac{1 min}{45 w}*2700 w = 60 min

Since we have 60 minutes in 1 hour, the time in hours is:

\frac{1 h}{60 min}*60min = 1 h

Therefore, it will take 1 hour to type the report.

I hope it helps you!

5 0
3 years ago
Please Answer Quick 65 Points ! !
NeTakaya

The correct answers are:

  • The ordered pair (7, 19) is a solution to the first equation because it makes the first equation true.
  • The ordered pair (7, 19) is not a solution to the system because it makes at least one of the equations false.

Further explanation:

Given equations are:

2x-y = -5

x+3y = 22

We have to check whether the given statements are true or not. In order to find that we have to put the points in the equations

Putting the point in 2x-y = -5

2x - y = -5\\2(7) -19 = -5\\14-19 = -5\\-5 = -5

Putting the point in x+3y=22

7 + 3 (19) = 22\\7 + 57 = 22\\64 \neq 22

The point satisfies the first equation but doesn't satisfy the second. So,

1. The ordered pair (7, 19) is a solution to the first equation because it makes the first equation true.

This statement is true as the point satisfies the first equation

2. The ordered pair (7, 19) is a solution to the second equation because it makes the second equation true.

This Statement is false.

3. The ordered pair (7, 19) is not a solution to the system because it makes at least one of the equations false.

This statement is true.

4. The ordered pair (7, 19) is a solution to the system because it makes both equations true.

This statement is false as the ordered pair doesn't satisfy both equations.

Keywords: Solution of system of equations, linear equations

Learn more about solution of linear equations at:

  • brainly.com/question/13168205
  • brainly.com/question/1465430

#LearnwithBrainly

5 0
3 years ago
9. A simple interest loan with a principal of
8090 [49]

Answer:

437.50

Step-by-step explanation:

Okay so you need to give him 5000 but now its 5875 cuz you waited so just do 875÷2

3 0
3 years ago
Passes through (1,12) and has a vertex (10,-4)
agasfer [191]

Answer: 16/81 (x-10)^2 -4

Step-by-step explanation:

To write a vertex equation with just a point and the vertex, you have to figure out the variables.

In vertex form, the equation is y = a (x-h)^2 + k

Your y is 12, x = 1, h = 10, and k = -4

Plug everything into equation

12 = a (1 - 10)^2 -4

12 = a (-9)^2 - 4

12 = 81a - 4

16 = 81a

16/81 = a

Now you know what the 'a' value is.

If you graph 16/81 (x-10)^2 -4 , you will get a point at (1,12) and a vertex of (10,-4)!

I hope this helps!

3 0
3 years ago
Mathematics Mh Slope
gizmo_the_mogwai [7]

Answer:y=-3x+4

Step-by-step explanation: use the y=mx+b equation.

6 0
3 years ago
Read 2 more answers
Other questions:
  • Please help! <br> 0.125x + 3 = 10<br> x =
    11·2 answers
  • A local eat-in pizza restaurant wants to investigate the possibility of starting to deliver pizzas. The owner of the store has d
    7·1 answer
  • Mr. Heath organizes a six-game tournament where players will
    11·1 answer
  • Find the volume of the wedge-shaped region (Figure 1) contained in the cylinder x2+y2=81 and bounded above by the plane z=x and
    11·2 answers
  • The Toys of Life store had 240 customers on October 24th. They had 264 customers on
    15·1 answer
  • 7 + 6(w +-6) vbdrufbhjf
    10·1 answer
  • The first and last terms in a proportion are called the<br> amar
    9·2 answers
  • Which division problem does the model below show? 4 fraction bars. The fraction bars are labeled 1 and each have 6 boxes underne
    9·2 answers
  • Approximate √80 by using perfect squares. 80 is between which two perfect squares.​
    15·1 answer
  • !!!!4SUPER EASYY!! NO PAPER NEEDED !! WILL GIVE BRAINLY!!
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!