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
mel-nik [20]
2 years ago
15

Mr. Akika has 49 21 cent and 31 cent stamps all told. The stamps are worth $13.39. how many of each kind of stamps does he have?

Mathematics
1 answer:
Lana71 [14]2 years ago
4 0

Mr Akika has 18  21-cent stamp and 31 31-cent stamp.  

He has 49 21-cent and 31-cent stamps all told.

let

x = number of 21 cent stamp

y = number of 31 cent stamp

Therefore,

<h3>Total number of stamp:</h3>
  • x + y  = 49
<h3>Total cost of stamp:</h3>
  • 21x + 31y = 1339

Therefore,

x + y = 49

21x + 31y = 1339

21x + 21y = 1029

10y = 310

y = 310 / 10

y = 31

Therefore,

x = 49 - 31

x = 18

Therefore, Mr Akika has 18  21-cent stamp and 31 31-cent stamp.  

learn more on system of equation: brainly.com/question/1369852?referrer=searchResults

You might be interested in
A court reporter is transcribing an accident report from Germany. The report states that the driver was traveling 80 kilometers
marusya05 [52]
Divide the speed value by 1.609,
1kilometer per hr=0.621mph
80kph=49.7097Mph
8 0
3 years ago
Read 2 more answers
Find the area of a traingle given that the base is 19.5cm and height is 8 4/5cm.
Phoenix [80]

Answer:

85.6cm

Step-by-step explanation:

Area of a triangle =1/2*b*h

Where base=19.5cm while the height is 8 4/5 = 8.8

Area = 1/2 * 19.5cm * 8.8cm

Area = 171.6cm/2

Area=85.6cm

3 0
3 years ago
What is 10r-5r+3r-8r?????
ANEK [815]

Answer:

16

Step-by-step explanation:

8 0
3 years ago
I need help with finding interior/exterior angles. solve for “?”
Ivenika [448]

Answer:

3. 160

4. 105

5. 95

6. 30

7. 86

8. 130

All triangles equal 180 so when you add the other 2 degrees in the triangle then subtract that by 180 then you get the third angle. The a straight line also equals 180 degrees so when you get the third angle subtract it by 180 then you get the answer to the "?"

That's how I was taught so, hope I got it all right! : )

8 0
3 years ago
Read 2 more answers
If the radius of a circle with a area of 5.3 mm squared is multiplied by 5,
chubhunter [2.5K]
I'm guessing the question is meant to be "<span>If the radius of a circle with a area of 5.3 mm squared is multiplied by 5, what will the new area be?", so i'll answer that.

Area of a circle =</span>πr^2

5.3=πr^2, 5.3=π(5r)^2
132.5=25πr^2
6 0
3 years ago
Other questions:
  • A store manager orders T-shirts so that 15 out of every 35 are a medium. How many medium T-shirts would you expect to find where
    5·1 answer
  • G.o has 3 orange picks for every 2 green.if there are 25 picks in all how many picks are orange
    14·1 answer
  • What is 2/5 - 7/8 =​
    7·1 answer
  • If for sets A and B there exists a injective function but not bijective function from A to B then a) Cardinality of A is stricly
    11·1 answer
  • Using the "Part4Series.txt" time series
    11·1 answer
  • Boxes of fruit snacks are on sale at the grocery. The boxes are the same size. A family needs to purchase 24 boxes. There are 3
    14·2 answers
  • 14. A sphere is inscribed in a cube with an edge of 10. What is the shortest possible distance from one of the vertices of the c
    13·1 answer
  • Is 2 the solution of 4x+2=x+8
    15·1 answer
  • Or miki5 $ 5.15
    11·1 answer
  • Need help please its a missing assignment and i need to turn it in at midnight
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!