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
ololo11 [35]
3 years ago
12

Charlie put postage worth $1.29 on a package he sent to his sister. He used only 16-cent stamps and 7-cent stamps. How many each

of type of stamp did he use?
Show work and explain it.
Mathematics
1 answer:
strojnjashka [21]3 years ago
8 0
Let x represent number of 16-cent stamps and 
let y represent number of 7-cent stamps

we can write equation:
16*x + 7*y = 129

Now, the problem is that we need both x and y to be whole numbers for obvious reasons. you cant put half a stamp.

We can do this by iteration and check for results. Obviously x cant be larger than 8 because:
8*16 = 128 and there is no room for 7-cent stamp

lets try 7:
7*16 = 112. remainder is 17 which isnt divisable by 7

for 6:
6*16 = 96. remainder is 33 which again isnt divisable by 7

but for 5 we get good result.

5*16 = 80.  remainder is 49 which divided by 7 gives us 7

that means 5x 16 cent stamps and 7x 7 cent stamps
You might be interested in
PLEASE HELP!! DUE SOON!!
Aneli [31]

Answer:

can i see a pic

Step-by-step explanation:

6 0
2 years ago
____ property allows you to regroup terms using parentheses when adding or multiplying, without changing the answer
Alchen [17]
Commutative property
5 0
3 years ago
Read 2 more answers
((a^-1)/ (b^-1) square root a)
kari74 [83]
So the problem ask to calculate and covert the said equation or expression to the form of ca^pb^q where as all of the variables is a number. So base in that information and following some formula, the answer would be a^(-3/2)b. I hope you are satisfied with my answer 
3 0
2 years ago
Read 2 more answers
Can someone please explain to me how to solve this?
lyudmila [28]
I hope this helps you



x= -2


h (-2)= 3. (-2)+1


h (-2)=-6+1


h (-2)= -5
4 0
3 years ago
Cedric made 30 cups of soup. How many 1 1/4 cups servings does he have? A. 24 servings. B. 28 servings. C. 30 servings. D. 35 se
belka [17]
A. 24 servings. you take the faction 1 1/4 and convert it into a decimal (1.25). 1.25×24=30. Therefore making your answer "A".
5 0
3 years ago
Other questions:
  • √3x+1=x+1 how to do you solve this equation using step by step
    12·1 answer
  • Why is using a compass and straightedge and compass better than technology
    13·1 answer
  • Simplify the expression <br><br> √10 -4 √10<br><br> Please don’t guess
    6·1 answer
  • 1. Point A(-5,8) is reflected across the line y = x. What are the coordinates of A'? Show your work and explain.
    13·1 answer
  • What is the solution to the inequality 12&lt;8+x
    8·1 answer
  • Martin has 4 pizzas, and he wants to cut them all into 1/8’s. How many pieces will Martin have?
    10·1 answer
  • Tickets for a cinema cost £a for adults and £c for children. 2 adults and 3 children cost £42.70. 3 adults and 5 children cost £
    13·1 answer
  • Please help don't understand
    9·1 answer
  • X2 + 10x + 16/x + 2 =<br> HELP ASAP !! Plss
    5·1 answer
  • Please help!!!!!!!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!