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
Marrrta [24]
3 years ago
8

A jar contains n nickels and d dimes there are 30 coins in the jar and the total value of the coins is $2.10 Set up and solve a

system of equations to find how many nickels and how many dimes are in the jar
Mathematics
2 answers:
Gekata [30.6K]3 years ago
8 0

Answer:

12 dimes and 18 nickels

Step-by-step explanation:

Equations given by word problem:

n + d = 30

0.05n + 0.1d= 2.10

How I solved them:

d= 30 - n

0.05n + 0.1(30 - n)= 2.10

0.05n + 3 - 0.1n= 2.10

-0.05n= -.09

Divide both sides by -0.05

n= 18

18 + d = 30

d= 12

Taya2010 [7]3 years ago
6 0
Yes I agree with the person above me who have answered before me
You might be interested in
a bookstore sells 7 books for $99.75 which table represents the relationship between number of books and total price?
WARRIOR [948]

Answer:

You did not provide the tables to choose from, but the relationship between number of books and total price is that each book is 14.25. Hope that helps at least.

7 0
2 years ago
What is the value of t? 13t - 8.7 = 82.3
Dennis_Churaev [7]

Answer:

7

Step-by-step explanation:

13t = 82.3 + 8.7

13t = 91

t = 91/13 = 7

5 0
3 years ago
Read 2 more answers
Show how to solve 304 take away 217
s344n2d4d5 [400]
You do 304 subtract 217 which equals 87
8 0
3 years ago
A bicycle store costs ​$3300 per month to operate. The store pays an average of ​$75 per bike. The average selling price of each
Klio2033 [76]
S=Selling price 135
V=Variable cost 75
F=Fixed cost 3300
Let quantity be Q
The formula to break even is
135Q-75Q-3300=0
Solve for Q
60Q-3300=0
60Q=3300
Q=3300/60
Q=50
So the store must sell 50 bicycles to break even

Hope it helps!

6 0
3 years ago
Read 2 more answers
(Translate each sentence into a formula)
Brilliant_brown [7]

Answer:

A=πr2

THIS IS THE ANSWER

PLEASE MARK BRAINLIEST!!!!!

4 0
3 years ago
Other questions:
  • How many times is the image reflected in a 6-sided snowflake?
    13·1 answer
  • A rectangular floor is 6 yards long and 4 yards wide. What is the area of the floor in square feet? Please help!
    11·1 answer
  • Jean climbed 2/3 of the distance to the top of the cliff as shown on the number line. Terry climbed 1/3 of the distance less tha
    13·1 answer
  • N a northwestern U.S. town, the peak temperature is 96° Fahrenheit in August. After the peak, it drops an average of 4° Fahrenhe
    6·1 answer
  • Show that the product of two consecutive odd integers is always one less than the square of their average. Is this true also for
    11·1 answer
  • A single card is drawn from a deck. Find the probability of selecting
    13·1 answer
  • Simplify the following 2a + 3b + 4a – 7b
    15·2 answers
  • Help i'll give brainlesttt
    10·2 answers
  • Which expression is equivalent
    15·1 answer
  • Is 3,645,211 divisible by 10?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!