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
Lera25 [3.4K]
3 years ago
11

Alex has 12 friends and 63 coins. What is the minimum number of additional coins he needs so that he can give each friend at lea

st one coin and no two friends receive the same number of coins?
Mathematics
1 answer:
mamaluj [8]3 years ago
4 0

Answer: 15 coins

Step-by-step explanation:

Alex has friends = 12

He has total coins = 63

Now,  if he want to add minimum number of coins in his coins for distribution,

The difference in the number of coin must be same or minimum,

The minimum difference between number of coins his friends can get =  1,

Minimum number of coin one person can get = 1,

Therefore, the order of coin that having minimum sum,

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12

Total sum of this AP = 78

Thus, the minimum coins he can give all of his 12 friends = 78

Since, 78-63 = 15

⇒ The minimum number of additional coin = 15


You might be interested in
PLS ANSWER ASAP WILL MARK BRAINLIEST!!
elixir [45]

Answer:

Below in bold.

Step-by-step explanation:

As its direct variation the graph is a straight line and passes through the origin (0,0) and the slope (y/x) is a constant.

The  fraction (y/x) for any point will be a constant.

The fraction for (6, 4)  is 4/6 = 2/3.

So also on the line we have:

(-9, -6)  (because  -6/-9 = 2/3).

and (3, 2).

8 0
3 years ago
Multiply. Write your answer as a fraction in simplest form.<br> 2x7/16
Orlov [11]

Answer:

7/8

Step-by-step explanation:

7/16×2=7/16×2/1

          =14/16

          =7/8

3 0
3 years ago
The graph of a function f is shown below.<br> Find f (2) and find one value of x for which f(x) = -4
nadya68 [22]

Answer: a: -2, b: 0

Step-by-step explanation:

f(2) means that x=2, and we need to solve for y.

On the graph, it has a point of (2, -2) and since it's a function that is the only possible output. Therefore, f(2)=-2.

f(x)=-4 means that y=-4, and we need to solve for x.

On the graph, the point (0,-4) exists, and since the function contains only one output, it must be correct. Therefore, x=0.

5 0
2 years ago
Write the following quadratic in vertex form X^2-10x+7
grin007 [14]
Hello,

y=x²-10x+7=x²-2*5x+25-25+7=(x-5)²-18
================================
5 0
3 years ago
Which system of equations can be used to solve for the point of intersection of the lines on the graph? A) y = x - 7; y = 2x + 2
ratelena [41]

Answer:

C) y = 2x + 7; y = 2x + 2

Step-by-step explanation:

The two lines are parallel and so will have the same slope.

From the graph, the slope of both lines are two.

Using slope intercept formula, y=mx+c, with m=2, we have y=2x+c

The blue line has a y-intercept of 2 so the equation is

y = 2x + 2

The red line has a y-intercept of -7 so the equation is

y = 2x - 7

Hence the system is

y=2x+2

y=2x-7

The correct answer is C

4 0
3 years ago
Other questions:
  • A café owner is designing a new menu and wants to include a decorative border around the outside of her food listings. Due to th
    12·2 answers
  • Mrs. Williams shops at a store that has an annual membership fee of $30. Today she paid her annual membership and bought several
    14·2 answers
  • PLEASE PLEASE PLEASE HELP! WILL BE GIVING OUT BRAINLIEST AND LOTS OF POINTS!!!!!!!
    14·1 answer
  • Is −11 a solution of 2x + 3 = −19?
    10·2 answers
  • What is 1/3^5 whole form?
    15·2 answers
  • The area of a square is 36 square cenitmeters what is the length of each side of the square​
    5·2 answers
  • Simplify. −|11|=___<br> -11<br> -121<br> 121<br> 11
    6·2 answers
  • How do I solve this problem?
    8·1 answer
  • Find the value of x. The diagram is not to scale
    13·1 answer
  • Completed in 1863 , the dome is one of the most recent additions to the United States Capitol. It is supported by 36 iron ribs a
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!