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
OlgaM077 [116]
3 years ago
15

Mr.marichal has quarters ,dimes,and pennies in a jar.he has twice as many quarters as oennies.he also has 5 more dimes than penn

ies.the total value of the coins is $6.60.how many of each type of coin does he have
Mathematics
1 answer:
liberstina [14]3 years ago
5 0

He has 20 quarters, 15 dimes and 10 pennies.

Step-by-step explanation:

Let,

Quarters = x

Dimes = y

Pennies = z

We know that,

A quarter is 25 cents, dime is 10 cents and penny is 1 cent.

Total amount = $6.60 = 6.60*100 = 660 cents

According to given statement;

25x+10y+z=660   Eqn 1

x=2z    Eqn 2

y=z+5   Eqn 3

Putting these values of x and y in Eqn 1

25(2z)+10(z+5)+z=660\\50z+10z+50+z=660\\61z=660-50\\61z=610\\

Dividing both sides by 61;

\frac{61z}{61}=\frac{610}{61}\\z=10

Putting z=10 in Eqn 2

x=2(10)\\x=20

Putting z=10 in Eqn 3

y=10+5\\y=15

He has 20 quarters, 15 dimes and 10 pennies.

Keywords: linear equations, substitution method

Learn more about linear equations at:

  • brainly.com/question/10978575
  • brainly.com/question/11025333

#LearnwithBrainly

You might be interested in
If Jimmy boy here has 35 ropes and he washes 56 paper, how much wetlands will Johnny Boy own left.
lisov135 [29]

Answer:

All of what he had

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Disjoint, Independent, and Complement State whether the two events (A and B) described are disjoint, independent, and/or complem
just olya [345]

Answer:

Independent Events

Step-by-step explanation:

Two events are mutually exclusive or disjoint if they cannot both occur at the same time.

Two events are independent if the probability of occurrence of one does not affect the probability of occurrence of the other.

The complement of any event B is the event [not B], i.e. the event that B does not occur.

Australia plays Argentina for the championship in the Rugby World Cup.

At the same time, Ukraine plays Russia for the World Team Chess Championship.

A = event that Argentina wins their rugby match.

B = the event that Ukraine wins their chess match.

The two events A and B are Independent as the outcome of one does not affect the outcome of the other

4 0
3 years ago
 If the equation y = 15x + 2 is changed to y = 15x - 4, how will the graph of the line change?
igomit [66]
The y-intercept is changed from 2 to -4.

That means that the point that the graph crosses the y axis has been moved down by 6.

Since the slope of the line has not changed, this just means the graph of the line will be moved down by 6.

Hope this helps!
Your fortune is "When given a difficult choice, trust your gut. If you don't have one, then close your eyes and hope for the best."
6 0
3 years ago
Read 2 more answers
If a car was sold at an original price of $18,950, and the sales tax was 6%, what was the total price of the car?
Nadya [2.5K]

Answer: $20,087

Step-by-step explanation: $18,950 times 0.06 is sales tax equals $1137 add that to 18,950 and you get 20,087.

5 0
3 years ago
Read 2 more answers
Instructions: Find the common difference of the arithmetic sequence.<br> 7.05, 7.15, 7.25,7.35, 7.45
zzz [600]
I believe that the common difference would be.10
7 0
3 years ago
Read 2 more answers
Other questions:
  • What are like terms in the expression?
    8·2 answers
  • PLEASE HELP
    14·2 answers
  • What number should be added to both sides of the equation to complete the square?<br> x2 - 6x = 5
    9·1 answer
  • If the Probability of an event happening is 70%, what are the ODDS of the event happening?
    8·1 answer
  • Write a word problem that can be solved by finding the numbers<br> that have 4 as a factor.
    6·1 answer
  • <img src="https://tex.z-dn.net/?f=10%20%5Cdiv%20%20%5Csqrt%7B6x%7D%20" id="TexFormula1" title="10 \div \sqrt{6x} " alt="10 \div
    8·2 answers
  • The sum of the measures of two exterior angles of a triangle is 264. What is the measure of the third exterior angle?
    14·1 answer
  • Monique rolls a six-sided number cube labeled 1 to 6.
    8·2 answers
  • 5) A book is sold at $152.50 and a discount of 9% is given for students.
    11·1 answer
  • A cylindrical water tower has a base radius of 9 ft and a height of 11 ft. How many gallons of paint would it take to paint the
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!