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
adoni [48]
3 years ago
14

A piggy bank contains a nickels, dimes and quarters. There are five more dimes than nickels and twice as many quarters as dimes.

The total value for the coins is $7.55. How many of each type of coins is in the piggy bank? # of nickels:__________ # of dimes:__________ # of quarters:___________
Mathematics
1 answer:
Natasha2012 [34]3 years ago
4 0

Answer:

34 nickels, 39 dimes, 78 quarters

Step-by-step explanation:

q = quarters, d = dimes, n = nickels

n = d - 5

q = 2d

.25q + .10d + .05n = 7.55

<em>Plug in the first 2 equations into the third one</em>

.5d + .10d + .05(d - 5) = 7.55

<em>Open up the Parenthesis</em>

.5d + .10d + .5d - .25 = 7.55

<em>Combine Like Terms</em>

.2d - .25 = 7.55-->

.2d = 7.8 -->

d = 39 -->

n = 39 - 5 = 34

q = 2(39) = 78

You might be interested in
A pilot took 1/2 hours to complete his 1/3 pf his ttip how much longer will it take him to complete his trip?
Norma-Jean [14]

Answer:

1.5 hours

Step-by-step explanation:

1/2 + 1/2 + 1/2 =1.5

7 0
3 years ago
Find the product : 2p (4p² + 5p + 7)
Ber [7]
<h3>Answer: 8p^3 + 10p^2 + 14p</h3>

Explanation:

The outer term 2p is distributed among the three terms inside the parenthesis. We will multiply 2p by each term inside

2p times 4p^2 = 2*4*p*p^2 = 8p^3

2p times 5p = 2*5*p*p = 10p^2

2p times 7 = 2*7p = 14p

The results 8p^3, 10p^2 and 14p are added up to get the final answer shown above. We do not have any like terms to combine, so we leave it as is.

6 0
3 years ago
I don't understand linear relationships. Can someone explain how it works
Vesna [10]
Linear relationships can be expressed in a graphical format where the variable and the constant are connected via a straight line or in a mathematical format where the independent variable is multiplied by the slope coefficient, added by a constant, which determines the dependent variable.
5 0
3 years ago
Expand the expression. Fill in the blanks<br><br> 3(n + 7)<br><br> n +( <br> )7
morpeh [17]
3n + 21 is the answer
4 0
2 years ago
How can you tell if a function is linear by looking at the graph or the equation​
MrMuchimi
Every linear graph is just a straight line, so if there are any curves or unnatural shapes, than you know it is not linear. As for equations, if it can be shaped into y=mx+b where m and b are numbers, then it will be a linear equation.
7 0
3 years ago
Other questions:
  • Allan is ordering a set of rational numbers that includes positive values, negative values , fractions , and decimal numbers . H
    9·2 answers
  • Which of these linear functions has a greater rate of change than a linear function with a slope of 6 and a y–intercept of 3? Se
    6·1 answer
  • Find the value of this fraction computation: 6(1/2 + 2/3 + 3/4) Show the steps.
    7·1 answer
  • What is the solution to the system of equations?
    7·2 answers
  • Y+3x=5<br><br> How do i solve this?
    11·1 answer
  • 182632929236+188274739393974473
    9·2 answers
  • How do you solve equations by substitution​
    15·1 answer
  • Help me if you want to thank you have a good day!:D
    6·2 answers
  • The fastest pizza box folder can assemble 8 pizza boxes in 21 seconds. At this rate, how long would it take to assemble 20 pizza
    13·2 answers
  • Help Me please . I want to know cube root of 512 and 997002999 . please man fast​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!