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
ArbitrLikvidat [17]
3 years ago
10

A postal clerk sold 50 postage stamps for $16.05. Some were 39-cent stamps and the rest were 24-cent stamps. How many 39-cent st

amps were sold?
Mathematics
1 answer:
svetoff [14.1K]3 years ago
7 0
39x + 24(50 - x) = 1,605 
<span>13x + 8(50 - x) = 535 </span>
<span>13x + 400 - 8x = 535 </span>
<span>5x = 135 </span>
<span>x = 27 </span>

<span>Answer: 27 of 39-cent stamps were sold</span>
You might be interested in
What happens to the volume of a square pyramid if the base dimensions remain the same, but the height is cut to one third of the
Nadya [2.5K]
The volume becomes 1/3 of the original. With a rectangular base, volume of a pyramid is V=(length*width*height)/3. Cutting the height to 1/3 of the original length will make the total volume 1/3 of the original volume.
5 0
3 years ago
F(x)=5x+7 and g(x)=2x+3 find a) `(f+g)(x)` b) `(f-g)(x)`
geniusboy [140]

X + 1 by x = 99 find the value of 100x by 2x square + 102x + 2

1

SEE ANSWER

give me brainilest

3 0
3 years ago
Read 2 more answers
What is a pair of fractions as a pair of fractions with a common denominator of 1/3 and 3/4
scoundrel [369]
4/12 for 1/3 and 9/12 for 3/4
4 0
3 years ago
Read 2 more answers
Someone help me pls ..
goblinko [34]

Answer:

because they are both in the circle

Step-by-step explanation:

3 0
2 years ago
Hello, this is math and I need help ❤️ pls and ty ONLY SERIOUS ANSWERS
Greeley [361]

The bicycle with a 30-inches diameter rolls approximately 28.8 more than a tire with the diameter with 21-inches.

<u><em>How to solve:</em></u>

  • First use the formula: C = 3.14d
  • Replace the d value with 30 and solve the equation:

C = 3.14 x 30    ⇒   94.2477796077

  • Then solve the equation again but 21 as the d value:

C = 3.14 x 21     ⇒   65.9734457254

  • Then subtract 65.9734457254 from 94.2477796077 to get the approx. answer of 28.8

3 0
2 years ago
Other questions:
  • Name the sets of numbers to which<br> 3/5<br> belongs
    11·1 answer
  • Simplify (11+4)x10+5
    9·2 answers
  • Patterns and functions​
    13·1 answer
  • I WILL GIVE BRAINLIEST TO WHOEVER IS CORRECT.
    8·2 answers
  • A water sprinkler system can water
    7·2 answers
  • Plz help its due TOMMOROW​
    5·1 answer
  • Matthew goes hiking every 12 days and swimming every 6 days. He did both
    11·1 answer
  • F(x)x+4/x solve for x
    5·2 answers
  • Which of the following may have an outcome that is not a polynomial ? A. The addition of two polynomials B. The multiplication o
    7·1 answer
  • Which is the equation of a hyperbola with directrices at x = ±2 and foci at (5, 0) and (−5, 0)? y squared over 40 minus x square
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!