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
Alona [7]
3 years ago
11

Robin has triple as many marbles Amy. Sam has 15 more marbles than robin. Together they all have 99 marbles. How many marbles do

es each person have
Mathematics
1 answer:
tigry1 [53]3 years ago
5 0
Let:     x be Amy's marbles
         3x be Robin's marbles
   15+3x be Sam's marbles
x+3x+15+3x=99
          7x+15=99
                7x=99-15 (transfer 15 to the right side of the equation, then minus)
             7x/7=84/7 (divide both sides of the equation by 7)
                  x=12
Now substitute:
                             x = 12 (Amy's)
                3x = 3*12 = 36 (Robin's)
   15+3x  = 15+3*12 =  51 (Sam's)
               12+36+51 = 99
Therefore, Amy has 12 marbles, Robin has 36 marbles and Sam has 51 marbles.
You might be interested in
Can someone plz help me with this one problem plzzzzz I’m being timed!!!!
MaRussiya [10]

Answer:

2:28

3:42

4:56

5:70

8 0
3 years ago
What is the value of the expression “eight more than three times the difference of four and a number” when n = 3?
Trava [24]

Answer:

The value of the expression would be 11.

Step-by-step explanation:

3 (4 - n) + 8

When n = 3:

3 (4 - 3) + 8

3 (1) + 8

3 + 8

11

8 0
3 years ago
Read 2 more answers
Can someone help me plz!!
a_sh-v [17]

Answer:

C

Step-by-step explanation:

6 0
2 years ago
What is the x-intercepts of the graph of y = 12x-5x-2
hammer [34]
Y = 12x - 5x - 2

first simplify the equation by subtracting like terms (in this case):

12x - 5x = 7x

y = 7x - 2

Since you are finding the x, you must isolate the x. Do the opposite of PEMDAS.(Note: because there is a equal sign, what you do to one side, you do to the other)

y = 7x - 2

y (+2) = 7x - 2 (+2)
y + 2 = 7x
(y + 2)/7 = 7x/7

x = (y + 2)/7


x = (y + 2)/7 is your answer

hope this helps
8 0
3 years ago
Read 2 more answers
A small business spend $23,000 for taxable items last year. The tax rate was 9.5%. How much did the small business pay in taxes
ioda

Answer:

$2,185

Step-by-step explanation:

Multiply the amount spent by the tax rate.

23,000 x 9.5% = $2,185

8 0
2 years ago
Other questions:
  • A subcommittee is randomly selected from a committee of eight men and seven women. What is the probability that all three people
    15·1 answer
  • Help me in geometry please
    13·2 answers
  • What is −3/8 as a decimal and as a percent?
    8·1 answer
  • Help I missed 6 weeks of school bc of a injury need help!!!
    6·1 answer
  • A recipe calls for 5 1/2 cups of flour. Lorenzo only has 3 1/4 cups of flour. Write and solve an equation to find the additional
    5·1 answer
  • 600e^{.1t}=100e^{.9t}
    10·1 answer
  • Problem 1 find m<TRS​
    5·1 answer
  • One limitation of pre-operational thought is the belief that non-living objects have life-like qualities?
    15·1 answer
  • MARKING AS BRAINLIEST !( evaluate each using the values given)
    6·2 answers
  • HELP MEE!
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!