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
Svetradugi [14.3K]
2 years ago
5

Marla noticed that her friend Ron had three times as many pieces of candy as she did. She told him, "If you give me seven pieces

of your candy, we'll have exactly the same number of pieces." Ron responded, "I didn't know that until you mentioned it. But I'll make you a deal: If you can show me how to solve this puzzle using algebra, I'll give you the seven pieces. "One minute later, Ron was shocked to see that Marla had solved it perfectly. Can you do the same?
Mathematics
2 answers:
Lostsunrise [7]2 years ago
3 0

Answer:

This question seems to be asking for the work, so I put it below.

Anyhow, Marla had 3.5 candies, and Ron had 10.5.

Step-by-step explanation:

x = 3x - 7  (lets set this as "a")   { a = 3x - 7}

x + 7 = 3x -7 + 7

x + 7 = 3x

( x + 7 ) / 3 = 3/3x

( x + 7 ) / 3 = x     =    *(same as "a") {a}

( x + 7 ) / 3 = 3x - 7

( x + 7 ) / 3 * 3 = ( 3x - 7 ) * 3

x + 7 = 9x - 21

x - x + 7 = 9x - x - 21

7 = 8x - 21

7 + 21 = 8x - 21 + 21

28 = 8x

28 / 8 = 8/8x

3.5 = x

We can plug this back into the original equation and find that it is correct because:

x = 3x - 7

x = 3.5  =====

3.5 = 3( 3.5 ) - 7

3.5 = 10.5 - 7

3.5 = 3.5

kicyunya [14]2 years ago
3 0

Answer:

Marla has 7 and Ron has 21

Step-by-step explanation:

lets take

no. of candies Marla has as "x"

and no. of  candies Ron has will be "3x"

Marla says if Ron gives her seven candies, they will have the same no. of candies

so your equation will be -

x + 7 = 3x - 7 (as Marla gets the candy, Ron loses the candy)

3x - x = 7 + 7

2x = 14

∴x = 7

and 3x = 3 x 7 = 21

YOUR WELCOME

You might be interested in
Noah drew 22 hearts and 76 circles . what is the ratio of circles to all shapes?
Pavel [41]
The answer is 76/98 because 22+76 is 98
3 0
3 years ago
Read 2 more answers
Is 67 a prime number?
alexdok [17]

Answer:

yes 67 is a prime number because has only 2 divisors

Step-by-step explanation:


7 0
3 years ago
Help Help Help me out with this, please
mezya [45]

the volume of cuboid is given by length*breadth*height

the volume of above cuboid is 6*12*125=864cubic in.

volume of below cuboid is 18*10*8=1440 cubic in.

totoal volume = 1440+864l=2304 cubic in.

4 0
3 years ago
The sum of the digits of a 2-digit number is 1. What is the number?
Gnom [1K]

Answer:

The number is 10

3 0
3 years ago
Read 2 more answers
What’s the inverse of y=100-x^2
erastova [34]
y=100-x^2\ \ \ |+x^2\\\\y+x^2=100\ \ \ |-y\\\\x^2=100-y\\\\x=\sqrt{100-y}\\\\\text{Answer:}\ y^{-1}=\sqrt{100-x}
7 0
3 years ago
Other questions:
  • The radius of a circle is 4 centimeters. What is the circle's area?
    9·1 answer
  • Simplify (-4/5) ÷ (3/-2)<br><br> Please help!!!
    12·2 answers
  • A rectangle is dilated by a factor of 1/5. The area of the new rectangle is 4 square yards . What could be the dismension of the
    13·1 answer
  • Consider the multiple regression model with two regressors x1 and x2​, where both variables are determinants of the dependent va
    14·1 answer
  • Which is greater .021 or .04?
    8·2 answers
  • Pittsburgh international airport had approximately 714,58 passen
    7·1 answer
  • A prism with a volume of 270 m³ is dilated by a factor of 3. What is the volume of the dilated prism? Enter your answer in the b
    9·2 answers
  • (1,5), (9,85), (2,10),(6,38),(4,3),(12,107),(7,64), (12,86) ,(7,47), (9,64), (4,27) The line is in the form y=mx+b.y=mx+b. What
    15·1 answer
  • Pls help me with this!! :((((((
    15·1 answer
  • What is the angle for the question mark of each question?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!