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
zhuklara [117]
3 years ago
14

Mari,carlos and amanda collect stamps carlos have five more stamps then mari and amanda had three times as many stamps as carlos

alyogethey have 100 stamps find the number of stamps each person has
Mathematics
1 answer:
aivan3 [116]3 years ago
7 0

Mari: M

Carlos: M + 5

Amanda: 3(M + 5)

Total: 100

Mari  +  Carlos  +  Amanda  = Total

 M    +  M + 5   +   3(M + 5)  =  100

      2M + 5      +   3M + 15   =  100

                  5M + 20            = 100

                  5M                    = 80

                   M                     = 16

Carlos (C): M + 5   = (16) + 5   = 21

Amanda (A): 3(M + 5)   = 3(16 + 5)   = 3(21)   = 63

Answer: Mari=16, Carlos=21, Amanda=63

You might be interested in
Bethany earned a total of $175 for babysitting over her summer break. Which expression shows how much money Bethany earned each
erica [24]

Answer:

175+ braniliest pls

Step-by-step explanation:

175+

5 0
3 years ago
Read 2 more answers
a school bake sale earned over $25 from selling cookies, which cost $3 each. how many cookies did they sell? identify the number
SSSSS [86.1K]
It said the sale earned OVER $25 from selling cookies at $3 dollars each so if we let r=revenue , p=price per cookie and c=number of cookies sold:

pc>r  and since p=3 and r=25 

3c>25  divide both sides by 3

c>25/3

Since cookies are quantized units, they must be integers so:

c>8 1/3

c≥9  or in interval notation

c=[9, +oo)
5 0
3 years ago
Given: m∠A + m∠B = m∠B + m∠C Prove: m∠C = m∠A
mel-nik [20]

Answer:

See below.

Step-by-step explanation:

m∠A + m∠B = m∠B + m∠C

Use the subtraction property of equality to subtract m<B from both sides of the equation.

m∠A + m∠B - m<B = m∠B - m<B + m∠C

m∠A = m∠C

8 0
3 years ago
Read 2 more answers
Find the 13th term of the arithmetic sequence -3x+7, -5x+3, -7x-1, ...
oksano4ka [1.4K]

Answer:

a₁₃ = - 27x - 41

Step-by-step explanation:

The nth term of an arithmetic sequence is

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = - 3x + 7

d = a₂ - a₁ = - 5x + 3 - (- 3x + 7)

                 = - 5x + 3 + 3x - 7

                 = - 2x - 4

Then

a₁₃ = - 3x + 7 + 12(- 2x - 4)

     = - 3x + 7 - 24x - 48

     = - 27x - 41

3 0
3 years ago
Dora bought a bottle of nail polish that was marked down by 20 percent from its original price of $4.50. Including a 9 percent s
igomit [66]

Answer:

3.92$

Step-by-step explanation:

The first step is to deduct 20% of 4.50 from 4.50.

20% of 4.50 is 0.2 x 4.50 = .90

4.50 - 0.90 = 3.60

That's the new price without the sales tax.

Now we need to add 9% of 3.60 to 3.60 to get the final cost.

9% of 3.60 is .09 x 3.60 = 0.32

3.60 + .32 = $3.92

Hope it helps.. If yes mark me BRAINLIEST

Tysm!

8 0
3 years ago
Read 2 more answers
Other questions:
  • Find the domain of f(x)=4x^3+3x-2
    6·1 answer
  • What is 56/108? they are even numbers so they can be simplified but I don't know how to do it right.
    15·2 answers
  • Whoever answers best gets the brainliest!!:)
    11·1 answer
  • The table shows the battery lives, in hours, of ten Brand A batteries and ten Brand B batteries.
    5·1 answer
  • Sum of Two Dice
    8·1 answer
  • Evaluate |-6| + 3|4| + |-5| - 0 × 6.<br><br> 0<br> 18<br> 23<br> 25
    11·1 answer
  • Need help asap best answer gets brainliest.
    10·1 answer
  • Your teacher asks the class to evaluate the expression. Your classmate gives an incorrect answer of 256. Evaluate the expression
    13·1 answer
  • Answer pls!!!<br><br><br><br><br> help math geniuses
    11·1 answer
  • Simplify: -16b4 + (-18b4)
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!