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
SCORPION-xisa [38]
3 years ago
8

A pile of 55 coins, consisting of nickels and dimes, is worth $3.90. find the number of each.

Mathematics
2 answers:
xz_007 [3.2K]3 years ago
8 0
<span>N + D = 55 coins (1) (N stands for nickels, 5N + 10D = 390 cents (2) D stands for dimes) Simplify (2) by canceling the factor 5 in both sides: N + 2D = 78 (3) Subtract eq(1) from eq(3). You will get D = 78 - 55 = 23. Answer. 23 dimes and 55-23 = 32 nickels. Check. 23*10 + 32*5 = 390 cents</span>
kari74 [83]3 years ago
7 0

N + D = 55 coins (1) (N stands for nickels, 5N + 10D = 390 cents (2) D stands for dimes) Simplify (2) by canceling the factor 5 in both sides: N + 2D = 78 (3) Subtract eq(1) from eq(3). You will get D = 78 - 55 = 23. Answer. 23 dimes and 55-23 = 32 nickels. Check. 23*10 + 32*5 = 390 cent

You might be interested in
Take away 6 from 5 times g ~ in albebraic expression.
Brrunno [24]

5g-6 when you multiply a verable with a number you simplily put the letter beside the number and that lets us know to multiply:)
4 0
3 years ago
A street sign is 104 inches tall. How tall is it in feet and inches.
ikadub [295]

Answer:

8 ft 8 in

Step-by-step explanation:

104/12 = 8.666...

This shows that there are 8 total feet because there are 12 inches in a foot

Then, multiply 8*12 to get 96 in order to get the remainder of the inches left that do not make up one whole foot.

Then subtract 96 from 104 (104-96) to get the remainder which is 8 inches.

7 0
2 years ago
For every $5 Micah saves, his parents give him $10. What is the constant of proportionality
liberstina [14]
When he gets five he gets 2 mor fives
8 0
3 years ago
You can represent the measures of an angle and its complement as x° and (90 − x)°. Similarly, you can represent the measures of
dimulka [17.4K]
Complement = 90
1)x+50=90
2)x=90-50
3)x=40
7 0
2 years ago
Can someone check my answers
omeli [17]
I'm pretty sure that's correct :).
8 0
3 years ago
Other questions:
  • Is this work correct? If not please tell me what is and how to correct the problem. ❤️
    10·2 answers
  • How do I find the area ?
    15·1 answer
  • Is 0.12 a rational number
    9·2 answers
  • which statement correctly descibes what happens to the shape and location of the graph of y=2x^2 if it is regraphed as y=-1/2x^2
    13·1 answer
  • Why did farmer john ask the sumpermark manger where the overralls were
    8·1 answer
  • Six divided by fivehundredsevenysik
    8·1 answer
  • Solve the inequality<br><br> 1≥−y/4
    15·2 answers
  • 46. Order these numbers from least to greatest:<br> 1/2, 0.4, 1/3, 1/5
    5·1 answer
  • Have you ever been in the middle of telling a story and had to use hand gestures or even a drawing to make your point? In algebr
    11·1 answer
  • HELP ME!!!! PLEASE (I have Points)
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!