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
g100num [7]
3 years ago
14

Jenica has $4.50 in dimes and quarters. She has 1 more than three as many quarters as dimes. How many quarters does she have?

Mathematics
2 answers:
tatiyna3 years ago
8 0

Answer:

12 quarters

Step-by-step explanation:

Thus :  

0.1

a

+

0.25

b

=

4.5

And we know that she has 3 more dimes than quarters

Thus :

a

=

b

+

3

We just replace the value of a in the equation :

0.1

⋅

(

b

+

3

)

+

0.25

b

=

4.5

0.1

b

+

0.3

+

0.25

b

=

4.5

0.1

b

+

0.25

b

=

4.5

−

0.3

( we substract 0.3 on each side )

0.35

b

=

4.2

b

=

4.2

0.35

( we divide by 0.35 on each side )

b

=

12

: Laura has

12

quarters

We can now get

a

:

0.1

a

+

0.25

b

=

4.5

0.1

a

+

0.25

⋅

12

=

4.5

0.1

a

+

3

=

4.5

0.1

a

=

4.5

−

3

( we substract 3 on each side )

0.1

a

=

1.5

a

=

1.5

0.1

( we divide by 0.1 on each side )

a

=

15

: Laura has

15

dimes

We can now verify :

15

⋅

0.1

+

12

⋅

0.25

=

1.5

+

3

=

4.5

: correct !

And

15

=

12

+

3

, so Laura has

3

more dimes than quarters

Zielflug [23.3K]3 years ago
4 0

Answer:

Laura has $4.50 in dimes and quarters she has 3 more dimes than quarters How many quarters does she have

She has 3 more dimes than quarters. How many quarters does she have? Laura has 15 dimes and 12 quarters.

Step-by-step explanation:

You might be interested in
Eduardo is planning to purchase a 50" flat-screen TV at The Electronics Hut. If the
meriva

Answer:

Sales tax=31.16, total price=359.16

Step-by-step explanation:

Price x sales tax rate -=sales tax

328 x .095(9.5%)=31.16 sales tax

price + sales tax = total price

328 + 31.16=359.16

3 0
2 years ago
How to know what the slope of an equation is?
Nadusha1986 [10]
Find<span> the </span>Equation<span> of a Line Given That You </span>Know<span> Its </span>Slope<span> and Y-Intercept. The </span>equation<span> of a line is usually written as y=mx+b where m is the </span>slope<span> and b is the y-intercept. If you </span>know<span> the </span>slope<span> (m) any y-intercept (b) of a line, this page will show you </span>how to find<span> the </span>equation<span> of the line. thats the method i use</span>
8 0
3 years ago
Read 2 more answers
Suppose that a monopolist
daser333 [38]

Answer:

The monopolist's net profit function would be:

N(y)=198\,y\,-\,2.5\,y^2

Step-by-step explanation:

Recall that perfect price discrimination means that the monopolist would be able to get the maximum price that consumers are willing to pay for his products.

Therefore, if the demand curve is given by the function:

P(y)=200-2y

P stands for the price the consumers are willing to pay for the commodity and "y" stands for the quantity of units demanded at that price.

Then, the total income function (I) for the monopolist would be the product of the price the customers are willing to pay (that is function P) times the number of units that are sold at that price (y):

I(y)=y*P(y)\\I(y)=y\,(200-2y)\\I(y)= 200y-2y^2

Therefore, the net profit (N) for the monopolist would be the difference between the Income and Cost functions (Income minus Cost):

N(y)=I(y)-C(y)\\N(y)=(200\,y-2y^2)-(2y+0.5y^2)\\N(y)=198\,y\,-\,2.5\,y^2

5 0
2 years ago
I start with 8 grapes in my yard. The grapes triple every week. In how many weeks will there be 320 grapes in my yard (rounded t
REY [17]
U think it’s 40 cuz 8 x40 equal 320 ;-; if it’s wrong my name will come to use
4 0
3 years ago
A mechanic buys $14.56 worth of parts from a supplier. If he pays for the parts with a $20 bill, how much change will he receive
GarryVolchara [31]
$20-$14.56=$5.44

The mechanic would get $5.44 back as change.
8 0
3 years ago
Read 2 more answers
Other questions:
  • Can someone help me please? Am I right or no?
    10·1 answer
  • A group of workers can plant 27 acres in 9 days. what is there rate in acres per day?
    5·1 answer
  • miguel recived a $50 gift card to a bookstore.He would like to buy 3 books that cost $15.75 each including tax.He estimates that
    13·2 answers
  • Is it possible to have 5 Jacks in a standard deck of cards?
    12·1 answer
  • 1 kg = 2.2lb<br><br> 6.3lb = ___kg<br> show work
    9·1 answer
  • Kyle makes his own breakfast every Saturday. It usually takes ten minutes to make the breakfast and five minutes to eat the brea
    14·1 answer
  • Slope = 2; 3-intercept=-1
    5·1 answer
  • Helpppppppppp please please please please
    12·1 answer
  • A square has a perimeter of 4 cm. What is the length of each side?
    9·2 answers
  • What is 186×900+1= pleasle answer fast<br>​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!