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
Dmitry [639]
3 years ago
8

Their are 40 coin of dimes and quaters and they make $4.90 how much of each coin is their

Mathematics
1 answer:
ki77a [65]3 years ago
8 0

1 dime = 10 cents
1 quarter = 25 cents

$4.90 = 490 cents

let q = quaters
let d = dimes 

d + q = 40  ----- equation 1
10d + 25q = 490 ----- equation 2

10d+ 10q = 400 ---- equation 1 multiplied by 10
10d + 25q = 490 ---- equation 2 multiplied by 1

-15q = -90
q = 90/15
q = 6

plug q into any one of the equations 

d + q = 40
d + 6 = 40
d = 40 - 6
d = 34

34 dimes and 6 quaters
You might be interested in
Sam's track coach stands at the center of a circular track timing Sam's run. Which graph shows Sam's relative distance from the
timofeeve [1]
It shows the distance between him and the coach getting the “motion” of his running time. It’s like the circle with the line in the middle...
4 0
3 years ago
A bouncing ball reaches a height of 54 inches at its first peak, 36 inches at its second peak, and 24 inches at its third peak.
sesenic [268]

Answer:

f(x) = 54(two-thirds) Superscript x minus 1

Step-by-step explanation:

Given that:

First peak : 36 / 54=2/3

Second peak : 24 / 36 = 2/3

The common ratio here is 2/3 ; which mean each bounce height is 2/3 of previous height

Modeling this using geometric progression :

An=a1r^(n-1)

An = nth term of a geometric progression

a1=first term

r=common ratio = 2/3

n = nth term

a1=54

Substituting into the above formular :

An=54(2/3)^(n-1)

4 0
2 years ago
Read 2 more answers
Go step by step to reduce the radical.<br> V216
oksano4ka [1.4K]

Answer:

6\sqrt{6}

Step-by-step explanation:

\sqrt{216}

factorise 216

\sqrt{2*2*2*3*3*3}

since it is square root (meaning it has index to) pair up the number

2*3\sqrt{2*3

6\sqrt{6}

6 0
3 years ago
What's $33.99 rounded to the nearest $1, $5 and $10
Leno4ka [110]

Answer:

To the nearest dollar: 34$

To the nearest 5 dollars: 35$

To the nearest 10 dollars: 30$

Hope this helps

xqcL

4 0
3 years ago
What is tthe answerto the problem
Lemur [1.5K]

Answer:

g = 5

Step-by-step explanation:

-8 + (-2g) = -18

-8 -2g = -18

-2g = -18+8

-2g = -10

g = -10/-2

g = 5

5 0
3 years ago
Read 2 more answers
Other questions:
  • An exterminator must treat the perimeter of a house for insects. If the house is 90 feet long and 30 feet wide, what is the tota
    11·1 answer
  • Can someone help me out with this problem and tell me how to do it :D
    15·1 answer
  • What is the value on n? <br> A. 85<br> B. 47<br> C. 38<br> D. 81
    11·1 answer
  • Solve the system 8x + 2y = -3, 3x - 2y = 8
    8·1 answer
  • 9 cm, 5 cm and 3 cm a congruent triangle
    13·1 answer
  • A group of students were asked whether they take French class, Art class, both classes or neither classes. The table shows the p
    6·2 answers
  • A group of seven adults went to the movies. The total cost of the movie tickets was $30. This doesn't seem possible, does it? Af
    9·1 answer
  • How do i learn this subject easily?
    12·2 answers
  • What is the answer to this??<br> thank u if u help me! :)
    10·1 answer
  • Pls help this is due today and i have no idea
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!