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
DaniilM [7]
3 years ago
8

A coin bank has 250 coins dimes and quarters worth 39.25 how many of each type of coins are there?

Mathematics
2 answers:
Maurinko [17]3 years ago
8 0
Set up a system of equations.

0.10d + 0.25q = 39.25
d + q = 250

Where 'd' represents the number of dimes, and 'q' represents the number of quarters.

d + q = 250

Subtract 'q' to both sides:

d = -q + 250

Plug in '-q + 250' for 'd' in the 1st equation:

0.10(-q + 250) + 0.25q = 39.25

Distribute 0.10:

-0.10q + 25 + 0.25q = 39.25

Combine like terms:

0.15q + 25 = 39.25

Subtract 25 to both sides:

0.15q = 14.25

Divide 0.15 to both sides:

q = 95

Now plug this into any of the two equations to find 'd':

d + q = 250

d + 95 = 250

Subtract 95 to both sides:

d = 155

So there are 95 quarters and 155 dimes.
bija089 [108]3 years ago
4 0
Coin bank= 250 coins
quarters worth=39.25
250-39.25=210.75 of coins there are
You might be interested in
There are 82 chairs at a birthday party. The chairs need to be lined up in equal-sized rows. How many possible ways can the chai
natali 33 [55]

Answer:

The number of possible ways can the chairs be lined up is 2 rows of 41.

Given that,

There are 82 chairs at a birthday party.

The chairs need to be lined up in equal-sized rows.

Based on the above information, the calculation is as follows:

= 2 \times 41=2×41

= 82 chairs

Here 2 denotes the rows.

Therefore we can conclude that the number of possible ways can the chairs be lined up is 2 rows of 41.

5 0
2 years ago
(25 points) A construction crew is lengthening a road. Let y represent the total length of the road (in miles). Let x represent
Tresset [83]

Answer:

L=193

Step-by-step explanation:

Initial length of the road =57mi

L= Total length

D=number of days worked

Number of miles added in 1 day= 4mi

Therefore,

L=57+D*4

After 34 days,

L=57+(34*4)

L=193mi

8 0
3 years ago
The table shows the values of a function f(x).
Veronika [31]
1 + 3 + 5 + 7 + 9 = 25
25 ÷ 5 = 5
The answer is 5
6 0
2 years ago
In her first 20 games, Jennie served 4 aces. If she continues to serve aces at this rate, how many aces will she have after 160
Talja [164]

Answer:

32 aces

Step-by-step explanation:

4/20= x/160

once you set up this proportion you can cross multiple to get:

20x= 640

then just solve for x:

x= 32

5 0
2 years ago
Determine the area and perimeter​
frosja888 [35]

Answer:

Area is the total surface covered by the shape and perimeter is the total length of the shape.

4 0
3 years ago
Other questions:
  • What is a best estimate for $21.15 $19.89 $6.52
    14·1 answer
  • Is 5.78778777 irrational or rational?
    5·1 answer
  • a collector has 120 movie posters and 100 band posters. she wants to sell 24 movie posters but still have her poster collection
    11·1 answer
  • Let y = f(t) be a solution to the differential equation dy/dt = ky, where k is a constant. Values of f for selected values of t
    9·2 answers
  • In a triangle, one angle is 3 times the first, another is 5 times the first. How large is the largest angle in degrees? round yo
    14·1 answer
  • Evaluate the expression |2x – 5| for x = –3 and for x = 3.
    10·1 answer
  • HELPS PLS DUE IN 5 min:( ILL MARK BRAINIEST!!!<br><br> Where is the magnetic field in a hair dryer
    12·1 answer
  • w(-3,3), x(6,4), y(6,-4) z(8,-6) determine weather wx and yz are paralell, perpindicular, or neither. PLEASE PLEEASE HELP ME
    8·1 answer
  • Is the product of - 7 and 4 less<br> than - 7,between 7 and 4, or<br> greater than 4?
    11·2 answers
  • One manufacturer boxes screws so that each box weighs the same no matter what size the screws are. The graph shows the amount of
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!